├── .mxproject
├── LICENSE
├── README.md
├── bluepill_neoemu_clk.hex
├── bluepill_neoemu_clk.ioc
├── ledmatrix.yaml
├── ledstrip.yaml
├── main.c
├── stripsim.py
├── usbd_cdc_if.c
└── usbd_cdc_if.h


/.mxproject:
--------------------------------------------------------------------------------
 1 | [PreviousLibFiles]
 2 | LibFiles=Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pcd.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pcd_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_ll_usb.h;Drivers/STM32F1xx_HAL_Driver/Inc/Legacy/stm32_hal_legacy.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_def.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio_ex.h;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_cortex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pwr.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_exti.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_spi.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim_ex.h;Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_core.h;Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_ctlreq.h;Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_def.h;Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_ioreq.h;Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc/usbd_cdc.h;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_ll_usb.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c;Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_core.c;Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ctlreq.c;Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ioreq.c;Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pcd.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pcd_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_ll_usb.h;Drivers/STM32F1xx_HAL_Driver/Inc/Legacy/stm32_hal_legacy.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_def.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio_ex.h;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_cortex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pwr.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_exti.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_spi.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim_ex.h;Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_core.h;Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_ctlreq.h;Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_def.h;Middlewares/ST/STM32_USB_Device_Library/Core/Inc/usbd_ioreq.h;Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc/usbd_cdc.h;Drivers/CMSIS/Device/ST/STM32F1xx/Include/stm32f103xb.h;Drivers/CMSIS/Device/ST/STM32F1xx/Include/stm32f1xx.h;Drivers/CMSIS/Device/ST/STM32F1xx/Include/system_stm32f1xx.h;Drivers/CMSIS/Device/ST/STM32F1xx/Source/Templates/system_stm32f1xx.c;Drivers/CMSIS/Include/cmsis_armcc.h;Drivers/CMSIS/Include/cmsis_armclang.h;Drivers/CMSIS/Include/cmsis_compiler.h;Drivers/CMSIS/Include/cmsis_gcc.h;Drivers/CMSIS/Include/cmsis_iccarm.h;Drivers/CMSIS/Include/cmsis_version.h;Drivers/CMSIS/Include/core_armv8mbl.h;Drivers/CMSIS/Include/core_armv8mml.h;Drivers/CMSIS/Include/core_cm0.h;Drivers/CMSIS/Include/core_cm0plus.h;Drivers/CMSIS/Include/core_cm1.h;Drivers/CMSIS/Include/core_cm23.h;Drivers/CMSIS/Include/core_cm3.h;Drivers/CMSIS/Include/core_cm33.h;Drivers/CMSIS/Include/core_cm4.h;Drivers/CMSIS/Include/core_cm7.h;Drivers/CMSIS/Include/core_sc000.h;Drivers/CMSIS/Include/core_sc300.h;Drivers/CMSIS/Include/mpu_armv7.h;Drivers/CMSIS/Include/mpu_armv8.h;Drivers/CMSIS/Include/tz_context.h;
 3 | 
 4 | [PreviousUsedKeilFiles]
 5 | SourceFiles=..\Core\Src\main.c;..\USB_DEVICE\App\usb_device.c;..\USB_DEVICE\Target\usbd_conf.c;..\USB_DEVICE\App\usbd_desc.c;..\USB_DEVICE\App\usbd_cdc_if.c;..\Core\Src\stm32f1xx_it.c;..\Core\Src\stm32f1xx_hal_msp.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd_ex.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_ll_usb.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c;..\Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_core.c;..\Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ctlreq.c;..\Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ioreq.c;..\Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c;..\Core\Src/system_stm32f1xx.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pcd_ex.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_ll_usb.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c;..\Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c;..\Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_core.c;..\Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ctlreq.c;..\Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ioreq.c;..\Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c;..\Core\Src/system_stm32f1xx.c;..\Drivers/CMSIS/Device/ST/STM32F1xx/Source/Templates/system_stm32f1xx.c;;..\Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_core.c;..\Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ctlreq.c;..\Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ioreq.c;..\Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c;
 6 | HeaderPath=..\Drivers\STM32F1xx_HAL_Driver\Inc;..\Drivers\STM32F1xx_HAL_Driver\Inc\Legacy;..\Middlewares\ST\STM32_USB_Device_Library\Core\Inc;..\Middlewares\ST\STM32_USB_Device_Library\Class\CDC\Inc;..\Drivers\CMSIS\Device\ST\STM32F1xx\Include;..\Drivers\CMSIS\Include;..\USB_DEVICE\App;..\USB_DEVICE\Target;..\Core\Inc;
 7 | CDefines=USE_HAL_DRIVER;STM32F103xB;USE_HAL_DRIVER;USE_HAL_DRIVER;
 8 | 
 9 | [PreviousGenFiles]
10 | AdvancedFolderStructure=true
11 | HeaderFileListSize=7
12 | HeaderFiles#0=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/USB_DEVICE/App/usb_device.h
13 | HeaderFiles#1=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/USB_DEVICE/Target/usbd_conf.h
14 | HeaderFiles#2=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/USB_DEVICE/App/usbd_desc.h
15 | HeaderFiles#3=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/USB_DEVICE/App/usbd_cdc_if.h
16 | HeaderFiles#4=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/Core/Inc/stm32f1xx_it.h
17 | HeaderFiles#5=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/Core/Inc/stm32f1xx_hal_conf.h
18 | HeaderFiles#6=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/Core/Inc/main.h
19 | HeaderFolderListSize=3
20 | HeaderPath#0=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/USB_DEVICE/App
21 | HeaderPath#1=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/USB_DEVICE/Target
22 | HeaderPath#2=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/Core/Inc
23 | HeaderFiles=;
24 | SourceFileListSize=7
25 | SourceFiles#0=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/USB_DEVICE/App/usb_device.c
26 | SourceFiles#1=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/USB_DEVICE/Target/usbd_conf.c
27 | SourceFiles#2=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/USB_DEVICE/App/usbd_desc.c
28 | SourceFiles#3=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/USB_DEVICE/App/usbd_cdc_if.c
29 | SourceFiles#4=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/Core/Src/stm32f1xx_it.c
30 | SourceFiles#5=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/Core/Src/stm32f1xx_hal_msp.c
31 | SourceFiles#6=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/Core/Src/main.c
32 | SourceFolderListSize=3
33 | SourcePath#0=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/USB_DEVICE/App
34 | SourcePath#1=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/USB_DEVICE/Target
35 | SourcePath#2=C:/Users/joe user/Documents/STM_bluepill/bluepill_neoemu_clk/Core/Src
36 | SourceFiles=;
37 | 
38 | 


--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # NeoPill
 2 | a Blue Pill Neopixel Emulator, firmware for STM32F103C8T6.
 3 | 
 4 | To build with STM32CubeMX (6.1.1), open bluepill_neoemu_clk.ioc, generate code in a selected folder. 
 5 | Locate and copy over the 3 files main.c, usbd_cdc_if.c, usbd_cdc_if.h .
 6 | Build with selected environment (originally used Keil uVision 5.26.)
 7 | Flash into a Blue Pill.
 8 | Follow instructions at https://hackaday.io/project/179916-neopill
 9 | 
10 | Or use STM32CubeProgrammer v2.6.0 to flash the Hex file.
11 | 
12 | 
13 | Python code for the PC side is 'stripsym.py', and two YAML config files ledstrip.yaml, ledmatrix.yaml.
14 | 
15 | Command Line:
16 |   python stripsim.py ledstrip.yaml
17 | or
18 |   python stripsim.py ledmatrix.yaml
19 | 


--------------------------------------------------------------------------------
/bluepill_neoemu_clk.hex:
--------------------------------------------------------------------------------
   1 | :020000040800F2
   2 | :100000008031002001010008432F0008FF2B000869
   3 | :10001000412F00084F070008574E0008000000005D
   4 | :100020000000000000000000000000007134000823
   5 | :100030003F08000800000000413200087334000847
   6 | :100040001B0100081B0100081B0100081B01000820
   7 | :100050001B0100081B0100081B0100081B01000810
   8 | :100060001B0100081B0100081B0100081B01000800
   9 | :100070001B0100081B010008090800081B010008FB
  10 | :100080001B0100081B0100081B0100081B010008E0
  11 | :10009000E14D00081B0100081B0100081B010008BE
  12 | :1000A0001B0100081B0100081B0100081B010008C0
  13 | :1000B000F1340008FD340008093500081B01000870
  14 | :1000C0001B0100081B0100081B0100081B010008A0
  15 | :1000D0001B0100081B0100081B0100081B01000890
  16 | :1000E0001B0100081B0100081B010008DFF80CD0F1
  17 | :1000F00000F040F900480047A94E00088031002078
  18 | :100100000648804706480047FEE7FEE7FEE7FEE7B1
  19 | :10011000FEE7FEE7FEE7FEE7FEE7FEE7ED34000858
  20 | :10012000ED00000840EA01039B0703D009E008C97D
  21 | :10013000121F08C0042AFAD203E011F8013B00F8AC
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1242 | :104D8000021101F20C4100287FF44AAF40E74209CA
1243 | :104D9000C0067FF44FAF521E4CE7B4F850201119F3
1244 | :104DA0002A7801EB0211A1F80C04297834F82100CB
1245 | :104DB0004BF68F72104080F4405040EA0B0024F80C
1246 | :104DC00021000020B2E50021A0F844104FF43F413B
1247 | :104DD000A0F8401000207047002070470020704766
1248 | :104DE0000148FCF74FBB0000942A0020B0F84400B3
1249 | :104DF0007047000010B500EB42005C0800F58060D1
1250 | :104E000009D000BF30F8042B01F8012B120A01F879
1251 | :104E1000012B641EF6D1DA0701D00088087010BD9E
1252 | :104E20000020704711B98021A0F84C100020704775
1253 | :104E300010B55B1C00EB42005B0800F5806009D0F8
1254 | :104E400011F8012B11F8014B42EA042220F8042B3F
1255 | :104E50005B1EF5D110BDFEE70907090E002804DB33
1256 | :104E600000F1E02080F80014704700F00F0000F11E
1257 | :104E7000E02080F8141D704702E008C8121F08C126
1258 | :104E8000002AFAD170477047002001E001C1121FCB
1259 | :104E9000002AFBD17047884201D3401A7047C943AA
1260 | :104EA000401A401C704700001CB500200090FBF722
1261 | :104EB00091FFFEF7E0FAFDF7BFFE8648416941F039
1262 | :104EC000010141614069002200F00100019011469A
1263 | :104ED0000E20FBF7DDFF0E20FBF7CCFFFDF7ECFE0D
1264 | :104EE000FDF70AFFFDF75EFFFDF7A8FFFDF7FEFFE8
1265 | :104EF00079480778DFF8E4B1DFF8E4918246DBF81F
1266 | :104F000000005D46016821F00201016073485838D5
1267 | :104F1000FCF722FFFDF7D0FE70480021D430FDF7EA
1268 | :104F2000F5FC6E4804214430FDF722FD6B4800215A
1269 | :104F30008C30FDF791FA69484430FDF722FC674850
1270 | :104F40008C30FDF71EFC6548D430FDF7E6F9FDF71F
1271 | :104F5000D3FEFDF727FFFDF771FF54464FF40056CF
1272 | :104F60000EE000BFFBF728FF0099FFF794FF6428CD
1273 | :104F700006D331464846FBF711FFFBF71DFF0090B3
1274 | :104F800020788742EED0277894F80180608818B1A5
1275 | :104F90005249D4310968C862A08830B14F494431C0
1276 | :104FA0000A68506309683230C8624C480021D43026
1277 | :104FB000FDF73AFC494804214430FDF769FC4748B5
1278 | :104FC000443001684A6942F001024A610068C168E0
1279 | :104FD00021F00201C1600021E16040488C30FDF702
1280 | :104FE000CBF93E488C300068016841F00401016053
1281 | :104FF0000EE000BFFBF7E0FE0099FFF74CFFC8286A
1282 | :1050000006D331464846FBF7C9FEFBF7D5FE0090B4
1283 | :10501000E0680028EED072B60020A2462061A060B1
1284 | :105020004FF400522063144662B62E49A1F5BA70BF
1285 | :10503000FCF778FF2868016841F002010160AB4687
1286 | :105040004FEA0A06DBF8000040680004000C26D096
1287 | :10505000A04224D0844203D9211A89B2019102E0EE
1288 | :105060004FF4005001940022C4F50051F2621D4A31
1289 | :1050700089B20446551808E072783146904511D13E
1290 | :10508000012812D0886A401CB06228460199FBF7BB
1291 | :10509000A5FB0028F0D1326B01991144316370787F
1292 | :1050A000804506D0FBF758FB29E7C86A401CF06230
1293 | :1050B000EBE7FBF781FE0099FFF7EDFEB0F5FA7F15
1294 | :1050C000C0D34FF400514846FBF768FEFBF774FE6F
1295 | :1050D0000090B7E7001002400000002014020020FA
1296 | :1050E000001001403003002030B587B000220123BA
1297 | :1050F0006C4603E0C55CA554521C5B1C8B4201D27C
1298 | :105100000F2AF7D30020A05405AB04AA07A120461C
1299 | :10511000FBF72CF8022806D10648BDF81010418094
1300 | :10512000BDF81410818007B030BD000025687520DF
1301 | :10513000256875000000002000000000000000004D
1302 | :105140000102030406070809DDDDDDDDDCBBBBDD94
1303 | :10515000DDDDDDDDDDDDDDDD988888888888888817
1304 | :105160007777777777888888855555566666666637
1305 | :105170006666666666688888833333322222222216
1306 | :10518000222222222228888DA85100080000002017
1307 | :10519000BC010000F806000868520008BC010020AD
1308 | :1051A000C42F0000884E0008013413613B1B089196
1309 | :1051B000041A9D041AC5041AF1041A41041A6D0454
1310 | :1051C000170403090412011402020216408304406A
1311 | :1051D00057260201020301031A1A031365071B086D
1312 | :1051E00055041A51041A89044119331182105324A9
1313 | :1051F000F4130A0632022A401C1C0902435B111DEB
1314 | :10520000C03209042D1A020B1305241610010524BF
1315 | :105210000110090104240202052406170107058272
1316 | :1052200003081C10090491320A1D07050102432CD2
1317 | :10523000070581070938442A40072A8107112B09ED
1318 | :1052400007440A3B044413CD381B0835044BB539D9
1319 | :10525000FC1A790C13C1371B080708C11AB5102AAC
1320 | :08526000A91C19041A9D0400A9
1321 | :04000005080000ED02
1322 | :00000001FF
1323 | 


--------------------------------------------------------------------------------
/bluepill_neoemu_clk.ioc:
--------------------------------------------------------------------------------
  1 | #MicroXplorer Configuration settings - do not modify
  2 | Mcu.Family=STM32F1
  3 | Dma.SPI2_RX.0.Instance=DMA1_Channel4
  4 | ProjectManager.MainLocation=Core/Src
  5 | RCC.MCOFreq_Value=72000000
  6 | SH.S_TIM4_CH2.ConfNb=1
  7 | VP_TIM2_VS_OPM.Mode=OPM_bit
  8 | USB_DEVICE.CLASS_NAME_FS=CDC
  9 | Dma.SPI2_RX.0.RequestParameters=Instance,Direction,PeriphInc,MemInc,PeriphDataAlignment,MemDataAlignment,Mode,Priority
 10 | ProjectManager.KeepUserCode=true
 11 | Mcu.UserName=STM32F103C8Tx
 12 | SPI2.VirtualType=VM_SLAVE
 13 | VP_TIM4_VS_OPM.Mode=OPM_bit
 14 | RCC.PLLCLKFreq_Value=72000000
 15 | PC13-TAMPER-RTC.GPIOParameters=GPIO_Label
 16 | ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false-HAL-true,2-MX_DMA_Init-DMA-false-HAL-true,3-SystemClock_Config-RCC-false-HAL-false,4-MX_SPI2_Init-SPI2-false-HAL-true,5-MX_TIM2_Init-TIM2-false-HAL-true,6-MX_TIM3_Init-TIM3-false-HAL-true,7-MX_TIM4_Init-TIM4-false-HAL-true,8-MX_USB_DEVICE_Init-USB_DEVICE-false-HAL-false
 17 | PA11.Mode=Device
 18 | RCC.ADCFreqValue=36000000
 19 | TIM3.Pulse-Output\ Compare1\ CH1=1
 20 | TIM2.Channel-PWM\ Generation2\ CH2=TIM_CHANNEL_2
 21 | PB13.Signal=SPI2_SCK
 22 | PB15.Signal=SPI2_MOSI
 23 | PinOutPanel.RotationAngle=0
 24 | TIM4.TIM_MasterOutputTrigger=TIM_TRGO_OC1
 25 | RCC.SYSCLKSource=RCC_SYSCLKSOURCE_PLLCLK
 26 | ProjectManager.StackSize=0x400
 27 | PD1-OSC_OUT.Signal=RCC_OSC_OUT
 28 | Mcu.IP4=SYS
 29 | RCC.FCLKCortexFreq_Value=72000000
 30 | Mcu.IP5=TIM2
 31 | NVIC.SVCall_IRQn=true\:0\:0\:false\:false\:true\:false\:false
 32 | Mcu.IP2=RCC
 33 | Mcu.IP3=SPI2
 34 | Mcu.IP0=DMA
 35 | Mcu.IP1=NVIC
 36 | PA12.Signal=USB_DP
 37 | Mcu.UserConstants=
 38 | TIM4.OCFastMode_PWM-PWM\ Generation1\ CH1=TIM_OCFAST_ENABLE
 39 | Mcu.ThirdPartyNb=0
 40 | RCC.HCLKFreq_Value=72000000
 41 | Mcu.IPNb=10
 42 | TIM2.IPParameters=Channel-PWM Generation2 CH2,Period,TIM_MasterOutputTrigger,OCMode_PWM-PWM Generation2 CH2,Pulse-PWM Generation2 CH2,OCFastMode_PWM-PWM Generation2 CH2
 43 | ProjectManager.PreviousToolchain=
 44 | RCC.APB2TimFreq_Value=72000000
 45 | TIM3.Period=7
 46 | TIM4.Pulse-PWM\ Generation1\ CH1=1
 47 | TIM4.OCMode_PWM-PWM\ Generation1\ CH1=TIM_OCMODE_PWM2
 48 | PB6.Signal=S_TIM4_CH1
 49 | Mcu.Pin6=PB13
 50 | Mcu.Pin7=PB15
 51 | VP_TIM3_VS_ControllerModeClock.Mode=Clock Mode
 52 | Mcu.Pin8=PA11
 53 | Mcu.Pin9=PA12
 54 | VP_TIM3_VS_ClockSourceITR.Signal=TIM3_VS_ClockSourceITR
 55 | RCC.AHBFreq_Value=72000000
 56 | SPI2.BaudRatePrescaler=SPI_BAUDRATEPRESCALER_2
 57 | Mcu.Pin0=PC13-TAMPER-RTC
 58 | Mcu.Pin1=PD0-OSC_IN
 59 | GPIO.groupedBy=Show All
 60 | Mcu.Pin2=PD1-OSC_OUT
 61 | Mcu.Pin3=PA0-WKUP
 62 | VP_TIM4_VS_ControllerModeTrigger.Mode=Trigger Mode
 63 | Mcu.Pin4=PA1
 64 | Mcu.Pin5=PA6
 65 | ProjectManager.ProjectBuild=false
 66 | NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false
 67 | VP_TIM2_VS_ControllerModeTrigger.Signal=TIM2_VS_ControllerModeTrigger
 68 | NVIC.DebugMonitor_IRQn=true\:0\:0\:false\:false\:true\:false\:false
 69 | NVIC.SysTick_IRQn=true\:0\:0\:false\:false\:true\:false\:true
 70 | RCC.PLLMUL=RCC_PLL_MUL9
 71 | ProjectManager.FirmwarePackage=STM32Cube FW_F1 V1.8.3
 72 | MxDb.Version=DB.6.0.10
 73 | ProjectManager.BackupPrevious=false
 74 | PA14.Mode=Serial_Wire
 75 | NVIC.TIM2_IRQn=true\:0\:0\:false\:false\:true\:true\:true
 76 | File.Version=6
 77 | SPI2.CalculateBaudRate=18.0 MBits/s
 78 | SH.S_TIM4_CH2.0=TIM4_CH2,TriggerSource_TI2FP2
 79 | Dma.SPI2_RX.0.MemDataAlignment=DMA_MDATAALIGN_BYTE
 80 | PB7.Signal=S_TIM4_CH2
 81 | NVIC.PendSV_IRQn=true\:0\:0\:false\:false\:true\:false\:false
 82 | SH.S_TIM3_CH1.0=TIM3_CH1,Output Compare1 CH1
 83 | TIM4.Period=37
 84 | VP_TIM3_VS_ClockSourceITR.Mode=TriggerSource_ITR3
 85 | Dma.RequestsNb=1
 86 | ProjectManager.HalAssertFull=false
 87 | Dma.SPI2_RX.0.MemInc=DMA_MINC_ENABLE
 88 | ProjectManager.ProjectName=bluepill_neoemu_clk
 89 | RCC.PLLMCOFreq_Value=36000000
 90 | VP_TIM3_VS_ControllerModeClock.Signal=TIM3_VS_ControllerModeClock
 91 | Mcu.Package=LQFP48
 92 | PA6.Signal=S_TIM3_CH1
 93 | SPI2.Mode=SPI_MODE_SLAVE
 94 | ProjectManager.ToolChainLocation=
 95 | VP_SYS_VS_Systick.Signal=SYS_VS_Systick
 96 | VP_TIM2_VS_OPM.Signal=TIM2_VS_OPM
 97 | VP_USB_DEVICE_VS_USB_DEVICE_CDC_FS.Signal=USB_DEVICE_VS_USB_DEVICE_CDC_FS
 98 | SPI2.CLKPhase=SPI_PHASE_2EDGE
 99 | TIM2.Pulse-PWM\ Generation2\ CH2=3602
100 | TIM2.TIM_MasterOutputTrigger=TIM_TRGO_RESET
101 | SH.S_TIM4_CH1.0=TIM4_CH1,PWM Generation1 CH1
102 | RCC.APB1TimFreq_Value=72000000
103 | NVIC.BusFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false
104 | SPI2.Direction=SPI_DIRECTION_2LINES_RXONLY
105 | Dma.SPI2_RX.0.Direction=DMA_PERIPH_TO_MEMORY
106 | PB13.Mode=RX_Only_Simplex_Unidirect_Slave
107 | NVIC.DMA1_Channel4_IRQn=true\:0\:0\:false\:false\:true\:false\:true
108 | Dma.Request0=SPI2_RX
109 | ProjectManager.CustomerFirmwarePackage=
110 | VP_TIM4_VS_OPM.Signal=TIM4_VS_OPM
111 | TIM4.Channel-PWM\ Generation1\ CH1=TIM_CHANNEL_1
112 | SH.S_TIM4_CH1.ConfNb=1
113 | ProjectManager.ProjectFileName=bluepill_neoemu_clk.ioc
114 | PD1-OSC_OUT.Mode=HSE-External-Oscillator
115 | Mcu.PinsNb=22
116 | ProjectManager.NoMain=false
117 | USB_DEVICE.VirtualModeFS=Cdc_FS
118 | Dma.SPI2_RX.0.Mode=DMA_CIRCULAR
119 | PC13-TAMPER-RTC.Signal=GPIO_Output
120 | RCC.USBPrescaler=RCC_USBCLKSOURCE_PLL_DIV1_5
121 | ProjectManager.DefaultFWLocation=true
122 | PD0-OSC_IN.Signal=RCC_OSC_IN
123 | ProjectManager.DeletePrevious=true
124 | RCC.APB1CLKDivider=RCC_HCLK_DIV2
125 | USB_DEVICE.IPParameters=VirtualMode,VirtualModeFS,CLASS_NAME_FS
126 | SH.S_TIM2_CH1_ETR.ConfNb=1
127 | RCC.FamilyName=M
128 | PA0-WKUP.Signal=S_TIM2_CH1_ETR
129 | PA13.Signal=SYS_JTMS-SWDIO
130 | SH.S_TIM2_CH2.0=TIM2_CH2,PWM Generation2 CH2
131 | Dma.SPI2_RX.0.PeriphDataAlignment=DMA_PDATAALIGN_BYTE
132 | ProjectManager.TargetToolchain=MDK-ARM V5.27
133 | TIM4.IPParameters=Period,Channel-PWM Generation1 CH1,TIM_MasterOutputTrigger,OCMode_PWM-PWM Generation1 CH1,Pulse-PWM Generation1 CH1,OCFastMode_PWM-PWM Generation1 CH1
134 | VP_USB_DEVICE_VS_USB_DEVICE_CDC_FS.Mode=CDC_FS
135 | SH.S_TIM2_CH2.ConfNb=1
136 | SPI2.IPParameters=VirtualType,Mode,Direction,CalculateBaudRate,CLKPhase,BaudRatePrescaler
137 | ProjectManager.RegisterCallBack=
138 | PC13-TAMPER-RTC.Locked=true
139 | RCC.USBFreq_Value=48000000
140 | PA1.Signal=S_TIM2_CH2
141 | TIM3.Channel-Output\ Compare1\ CH1=TIM_CHANNEL_1
142 | PD0-OSC_IN.Mode=HSE-External-Oscillator
143 | board=custom
144 | ProjectManager.LastFirmware=true
145 | PC13-TAMPER-RTC.GPIO_Label=LED
146 | PB15.Mode=RX_Only_Simplex_Unidirect_Slave
147 | NVIC.TIM3_IRQn=true\:0\:0\:false\:false\:true\:true\:true
148 | RCC.VCOOutput2Freq_Value=8000000
149 | RCC.APB2Freq_Value=72000000
150 | TIM2.OCMode_PWM-PWM\ Generation2\ CH2=TIM_OCMODE_PWM2
151 | MxCube.Version=6.1.2
152 | TIM3.OCMode_1=TIM_OCMODE_ACTIVE
153 | NVIC.USB_LP_CAN1_RX0_IRQn=true\:0\:0\:false\:false\:true\:false\:true
154 | VP_SYS_VS_Systick.Mode=SysTick
155 | TIM3.IPParameters=Period,OCMode_1,Channel-Output Compare1 CH1,Pulse-Output Compare1 CH1
156 | NVIC.NonMaskableInt_IRQn=true\:0\:0\:false\:false\:true\:false\:false
157 | TIM2.Period=3650
158 | PA13.Mode=Serial_Wire
159 | Dma.SPI2_RX.0.Priority=DMA_PRIORITY_MEDIUM
160 | ProjectManager.FreePins=false
161 | RCC.IPParameters=ADCFreqValue,AHBFreq_Value,APB1CLKDivider,APB1Freq_Value,APB1TimFreq_Value,APB2Freq_Value,APB2TimFreq_Value,FCLKCortexFreq_Value,FamilyName,HCLKFreq_Value,MCOFreq_Value,PLLCLKFreq_Value,PLLMCOFreq_Value,PLLMUL,SYSCLKFreq_VALUE,SYSCLKSource,TimSysFreq_Value,USBFreq_Value,USBPrescaler,VCOOutput2Freq_Value
162 | ProjectManager.AskForMigrate=true
163 | Mcu.Name=STM32F103C(8-B)Tx
164 | ProjectManager.UnderRoot=false
165 | VP_TIM4_VS_ControllerModeTrigger.Signal=TIM4_VS_ControllerModeTrigger
166 | Mcu.IP8=USB
167 | Mcu.IP9=USB_DEVICE
168 | Mcu.IP6=TIM3
169 | Mcu.IP7=TIM4
170 | ProjectManager.CoupleFile=false
171 | RCC.SYSCLKFreq_VALUE=72000000
172 | RCC.TimSysFreq_Value=72000000
173 | Mcu.Pin20=VP_TIM4_VS_OPM
174 | Mcu.Pin21=VP_USB_DEVICE_VS_USB_DEVICE_CDC_FS
175 | PA12.Mode=Device
176 | VP_TIM2_VS_ControllerModeTrigger.Mode=Trigger Mode
177 | NVIC.ForceEnableDMAVector=true
178 | KeepUserPlacement=false
179 | Dma.SPI2_RX.0.PeriphInc=DMA_PINC_DISABLE
180 | NVIC.MemoryManagement_IRQn=true\:0\:0\:false\:false\:true\:false\:false
181 | ProjectManager.CompilerOptimize=6
182 | PA11.Signal=USB_DM
183 | SH.S_TIM2_CH1_ETR.0=TIM2_CH1,TriggerSource_TI1FP1
184 | PA14.Signal=SYS_JTCK-SWCLK
185 | ProjectManager.HeapSize=0x200
186 | Mcu.Pin15=VP_TIM2_VS_ControllerModeTrigger
187 | NVIC.HardFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false
188 | Mcu.Pin16=VP_TIM2_VS_OPM
189 | Mcu.Pin13=PB7
190 | Mcu.Pin14=VP_SYS_VS_Systick
191 | Mcu.Pin19=VP_TIM4_VS_ControllerModeTrigger
192 | SH.S_TIM3_CH1.ConfNb=1
193 | ProjectManager.ComputerToolchain=false
194 | Mcu.Pin17=VP_TIM3_VS_ControllerModeClock
195 | Mcu.Pin18=VP_TIM3_VS_ClockSourceITR
196 | NVIC.PriorityGroup=NVIC_PRIORITYGROUP_4
197 | Mcu.Pin11=PA14
198 | Mcu.Pin12=PB6
199 | Mcu.Pin10=PA13
200 | TIM2.OCFastMode_PWM-PWM\ Generation2\ CH2=TIM_OCFAST_DISABLE
201 | NVIC.TIM4_IRQn=true\:0\:0\:false\:false\:true\:true\:true
202 | RCC.APB1Freq_Value=36000000
203 | USB_DEVICE.VirtualMode=Cdc
204 | ProjectManager.DeviceId=STM32F103C8Tx
205 | ProjectManager.LibraryCopy=0
206 | 


--------------------------------------------------------------------------------
/ledmatrix.yaml:
--------------------------------------------------------------------------------
 1 | # NeoPill LED matrix onfig yaml
 2 | 
 3 | serial_port: COM9   # which serial port is NeoPill  
 4 | #timing_T1H: 550      # optionally adjust bitstream timing, T1H, RES, in ns
 5 | #timing_RES: 48000
 6 | fps_limit: 60    #limit displayed frame rate
 7 | 
 8 | # FastLED: SerpentineLayout = false
 9 | # Adafruit: NEO_MATRIX_TOP+NEO_MATRIX_LEFT+NEO_MATRIX_ROWS+NEO_MATRIX_PROGRESSIVE    
10 |     
11 | matrix:  
12 | -   ledcolor: GRB # GRB, GRBW. must match target device
13 |     #number of LEDs total = matrix_w*matrix_h, and must match target device
14 |     matrix_w: 16  # number of LEDs across in matrix 
15 |     matrix_h: 16  # number of LEDs high in matrix 
16 |     length: 1024  # display size in pix
17 |     height: 1024   #in pix
18 |     gap: 2        #in pix 0..n, some small inter-pixel gap
19 |     style: circle # circle or rect. If many LEDs circles turn into dots!
20 |     wposx: 20    #x,y window position
21 |     wposy: 40
22 |     wname: "NeoPill Matrix Demo"    
23 |     
24 | 
25 |   


--------------------------------------------------------------------------------
/ledstrip.yaml:
--------------------------------------------------------------------------------
 1 | # NeoPill LED strip onfig yaml
 2 | 
 3 | serial_port: COM9   # which serial port is NeoPill  
 4 | #timing_T1H: 550      # optionally adjust bitstream timing, T1H, RES, in ns
 5 | #timing_RES: 48000
 6 | fps_limit: 60    #limit displayed frame rate
 7 | 
 8 | 
 9 | strip:
10 | -   ledcolor: GRB # GRB, GRBW. must match target device
11 |     num: 576       #number of LEDs must match target device
12 |     length: 1920  #in pix
13 |     height: 200   #in pix
14 |     gap: 0        #in pix 0..n, some small inter-pixel gap
15 |     style: rect # circle or rect. If many LEDs circles turn into dots!
16 |     wposx: 20    #x,y window position
17 |     wposy: 40
18 |     wname: "NeoPill Strip Demo"
19 |     
20 | 
21 | 
22 |   


--------------------------------------------------------------------------------
/main.c:
--------------------------------------------------------------------------------
  1 | /* USER CODE BEGIN Header */
  2 | /**
  3 |   ******************************************************************************
  4 |   * @file           : main.c
  5 |   * @brief          : Main program body
  6 |   ******************************************************************************
  7 |   * @attention
  8 |   *
  9 |   * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
 10 |   * All rights reserved.</center></h2>
 11 |   *
 12 |   * This software component is licensed by ST under BSD 3-Clause license,
 13 |   * the "License"; You may not use this file except in compliance with the
 14 |   * License. You may obtain a copy of the License at:
 15 |   *                        opensource.org/licenses/BSD-3-Clause
 16 |   *
 17 |   ******************************************************************************
 18 | 	This code supports NeoPill, a Neopixel Emulator, where connecting the Neopixel serial data from a device (an Arduino dev board, for example)
 19 | 	to a STM32 dev board converts the Neopixel serial data to USB serial data (a Neopixel->USB bridge.)
 20 | 	A PC runs python code that takes this USB data and converts it to colored objects on the screen.
 21 | 	
 22 | 	This code is specific for the STM32F103C8T6 BluePill.
 23 | 	
 24 | 	Lower level:
 25 | 	Read Neopixel serial data using SPI, where the pixel bitstream is fed into both MOSI and TIM4.
 26 | 	TIM4 then generates a one-shot pulse (CH1 out) wired to SCK.
 27 | 	The pulse is configured to match the bitstream timing T0H, T1H of <500ns = 0, >550ns = 1. 
 28 | 	CH2 in delay is 3 clks (Output compare fast enable), and CH1 out has resolution of 13.88ns (72MHz sys clock, Prescaler = 0) per count.
 29 | 	So each data bit generates a SCK pulse about 550ns duration.
 30 | 	
 31 | 	For 72MHz clock (13.88ns):
 32 | 	TIM4 ARR for one pulse mode:
 33 | 	550ns - (3*13.88) = 508.33ns
 34 | 	508.33ns/13.88 = 36.6 counts min. Make this 37 (555ns) for TIM4 ARR.
 35 | 	
 36 | 	
 37 | 	SPI data bytes are DMA'd to a buffer, and sent out USB.
 38 | 	Input rate testing never got higher than 64kbytes/s, using Arduino Nano target. Max rate should be around 100kbytes/s.
 39 | 	
 40 | 	Neopixel End of Data frame (EoF) (causing each pixel to latch) is 6us or longer of low level, typically stated as >50us. 
 41 | 	TIM3 is clocked from TIM4 ITR3, divided by 8, and is essentially a byte counter of the data going into the SPI. 
 42 | 	Every 8 bits of Neopixel data TIM3's ISR starts/restarts TIM2 one-pulse delay. Upon TIM2 one-pulse timeout an EoF ISR triggers.
 43 | 	
 44 | 	TIM2 Pulse delay:
 45 | 	50us/13.88ns = 3602 counts.
 46 | 	
 47 | 	The EoF ISR is used to initially sync the SPI data out the USB, assuming the PC side is ready to accept the data. Once sync'd
 48 | 	and running there is no further syncing.
 49 | 	
 50 | 	For the PC to sync/re-sync with the Neopixel data frames:
 51 | 	  1) send a one character 'F' to flush the USB (in case re-syncing) and reset the SPI interface. 
 52 | 		2) the PC flushes its USB data as well.
 53 | 		3) send a one character 'S' to start the data stream after the last EoF. 
 54 | 		
 55 | 	For tweaking TIM2, TIM4 timer values a simple text string from the PC is supported:
 56 | 		'T nnn mmm'
 57 | 		see pc_host_timing_req() below.
 58 | 		
 59 |   Environment:
 60 | 	  CubeMX 6.1.1
 61 | 	  Keil uVision 5.26
 62 | 		BluePill STM32F103C8T6, 16kRAM,64kFlash, 72MHz clk.
 63 | 		All code in main.c, with small mods in usbd_cdc_if.c, usbd_cdc_if.h
 64 | 	
 65 | 	
 66 | 	
 67 | 	BluePill pinout/timers:
 68 | 	
 69 | 	PB7 TIM4 CH2 input <-serial Neopixel data from external dev bd.
 70 | 	
 71 | 	PB6 TIM4 CH1 output -> generates SPI2_SCK (to PB13), use jumper.
 72 | 			TIM3 CH1 SPI2 input byte counter (no pins used)
 73 | 			TIM2 CH1 -> frame end ITR (no pins used)
 74 | 	
 75 | 	PB15 SPI2 MOSI input, Rx DMA1 CH4, <-serial Neopixel data from external dev bd.
 76 | 	PB13 SPI2 SCK input <- TIM4 CH1 (from PB6)
 77 | 	
 78 | 	LEDs
 79 | 	PC13 LED_Pin (built-in): red heartbeat, various speeds.
 80 | 	
 81 | 	On PC side, set COM baud rate to max 12,000,000 .
 82 | 	
 83 | 	R. Elwin 5/2021
 84 | 	
 85 |   */
 86 | 	
 87 | /* USER CODE END Header */
 88 | /* Includes ------------------------------------------------------------------*/
 89 | #include "main.h"
 90 | #include "usb_device.h"
 91 | 
 92 | /* Private includes ----------------------------------------------------------*/
 93 | /* USER CODE BEGIN Includes */
 94 | #include "usbd_cdc_if.h"
 95 | #include <limits.h>
 96 | /* USER CODE END Includes */
 97 | 
 98 | /* Private typedef -----------------------------------------------------------*/
 99 | /* USER CODE BEGIN PTD */
100 | 
101 | /* USER CODE END PTD */
102 | 
103 | /* Private define ------------------------------------------------------------*/
104 | /* USER CODE BEGIN PD */
105 | /* USER CODE END PD */
106 | 
107 | /* Private macro -------------------------------------------------------------*/
108 | /* USER CODE BEGIN PM */
109 | 
110 | /* USER CODE END PM */
111 | 
112 | /* Private variables ---------------------------------------------------------*/
113 | SPI_HandleTypeDef hspi2;
114 | DMA_HandleTypeDef hdma_spi2_rx;
115 | 
116 | TIM_HandleTypeDef htim2;
117 | TIM_HandleTypeDef htim3;
118 | TIM_HandleTypeDef htim4;
119 | 
120 | /* USER CODE BEGIN PV */
121 | extern uint8_t CDC_Flush_FS(void);
122 | 
123 | #define SPI_BSIZE	8192							// also look at USB's APP_TX_DATA_SIZE
124 | uint8_t spi_rx_buffer[SPI_BSIZE];
125 | 
126 | //items used in an ISR
127 | volatile uint32_t spi_rx_ctr;
128 | volatile uint32_t tim2_ch1_isr_ctr;		//EoF ISR counter
129 | volatile uint32_t frame_byte_ctr;
130 | volatile uint8_t usb_sync_flag,usb_flush_flag;
131 | 
132 | //helpful debugging aids
133 | uint32_t dbg_spi_isr, dbg_rx_rate;
134 | uint32_t dbg_spi_err, dbg_spi_state;
135 | uint32_t dbg_tim3_ch1_isr;
136 | uint32_t dbg_dma_ctr;
137 | uint32_t dbg_frame_overflow;
138 | uint32_t dbg_tim3_cnt;
139 | 
140 | //PC host changes default input timings if >0
141 | uint16_t pchost_tim4_Period;
142 | uint16_t pchost_tim2_Pulse;
143 | 
144 | //USB counters, also helpful for debugging
145 | uint32_t usb_fail;
146 | uint32_t usb_busy;
147 | uint32_t usb_bytes_tx_ctr;
148 | 
149 | /* USER CODE END PV */
150 | 
151 | /* Private function prototypes -----------------------------------------------*/
152 | void SystemClock_Config(void);
153 | static void MX_GPIO_Init(void);
154 | static void MX_DMA_Init(void);
155 | static void MX_SPI2_Init(void);
156 | static void MX_TIM2_Init(void);
157 | static void MX_TIM3_Init(void);
158 | static void MX_TIM4_Init(void);
159 | /* USER CODE BEGIN PFP */
160 | 
161 | /* USER CODE END PFP */
162 | 
163 | /* Private user code ---------------------------------------------------------*/
164 | /* USER CODE BEGIN 0 */
165 | //calcs difference between 2 timestamps -- just uint w/rollover.
166 | // ts > last_ts
167 | uint32_t calc_ts_et(uint32_t ts, uint32_t last_ts)
168 | {
169 |   if ( ts >= last_ts )
170 |   {
171 |     return ( ts - last_ts );
172 |   }
173 |   else
174 |   {
175 |     return ( 1 + ts - (ULONG_MAX - last_ts) );
176 |   }
177 | }
178 | 
179 | /*
180 | Timing change request from PC, in text, 'T nnn mmm'
181 | where:
182 | nnn= T1H bit timing in clks.
183 | mmm= TLL (or reset latch) End of Frame timeout pulse in counts.
184 | 
185 | (see notes at top)
186 | For 72MHz clock (13.88ns)
187 | ETR -> CH2 delay is 3 clks
188 | TIM2 ARR for one-shot pulse for T1H of 550ns:
189 | 	550ns - (3*13.88) = 508.33ns
190 | 	508.33ns/13.88 = 36.6 counts min. Make this 38 for TIM4 Period.
191 | 
192 | TLL's TIM2 Pulse defaults to 3602 counts (50us). TIM2 Period > Pulse (I made this arbitrarily 50.)
193 | 
194 | */
195 | void pc_host_timing_req(uint8_t* Buf, uint32_t Len)
196 | {
197 | 	char in_str[16];
198 | 	int i,j,n;
199 | 	uint16_t t1h, tll;
200 | 	
201 | 	//strip leading 'T', then '\0-terminate
202 | 	for( i=0, j=1; j<Len && i<sizeof(in_str)-1; i++, j++)
203 | 	{
204 | 		in_str[i] = Buf[j];
205 | 	}
206 | 	in_str[i] = '\0';
207 | 	n = sscanf( in_str, "%hu %hu", &t1h, &tll);
208 | 	
209 | 	//save if all's well
210 | 	if( n == 2 )
211 | 	{
212 | 		pchost_tim4_Period = t1h;
213 | 		pchost_tim2_Pulse = tll;
214 | 	}
215 | }
216 | 
217 | 
218 | //for SPI DMA circular buffer, Intr when wrap -- used to track overflow.
219 | void HAL_SPI_RxCpltCallback(SPI_HandleTypeDef *hspi)
220 | {
221 | 	spi_rx_ctr += SPI_BSIZE;		//another block read
222 | }
223 | 
224 | //for testing
225 | void HAL_SPI_ErrorCallback (SPI_HandleTypeDef * hspi)
226 | {
227 | 	dbg_spi_err = HAL_SPI_GetError(hspi);							//just returns hspi field, not register
228 | 	dbg_spi_state = HAL_SPI_GetState(hspi);
229 | }
230 | 
231 | 
232 | /*
233 | TIMER Pulse complete ISR, both TIM2 and TIM3.
234 | Be careful of which channel generates INTR as HAL may enable multiple channels.
235 | Also be careful of ISR latency as the SPI input bit stream is about 10us per byte.
236 | 
237 | SPI input bit stream is counted by TIM3. Every 8 counts this ISR resets/restarts TIM2 one-shot.
238 | Upon TIM2 one-shot completion, its ISR indicates an End of Frame.
239 | 
240 | Upon EoF TIM3, TIM4 counters are reset in case we started out of sync with the Neopixel bitstream.
241 | */
242 | 
243 | void HAL_TIM_PWM_PulseFinishedCallback(TIM_HandleTypeDef *htim)
244 | {
245 | 	
246 | 	if( &htim3 == htim )
247 | 	{
248 | 		if (htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1)  // we're using TIM3 channel 1
249 | 		{
250 | 			//input SPI byte counter triggers this intr, resets TIM2 one-shot
251 | 			dbg_tim3_ch1_isr++;
252 | 			
253 | 			htim2.Instance->EGR |= TIM_EGR_UG;				// UG=1, clears counter, CEN =0
254 | 			htim2.Instance->CR1 |= TIM_CR1_CEN;				// CEN =1, now running , or use macro	__HAL_TIM_ENABLE(&htim4);	
255 | 		}
256 | 	}
257 | 	else if( &htim2 == htim )
258 | 	{
259 | 		// TIM2 one-shot expires indicating End of Frame (EoF)
260 | 		if (htim->Channel == HAL_TIM_ACTIVE_CHANNEL_2)  // we're using TIM2 channel 2
261 | 		{
262 | 			uint16_t d;
263 | 			
264 | 			dbg_tim3_cnt+=htim3.Instance->CNT;		//test, see if TIM3 clocked during last delay. This indicates we're out of sync.
265 | 			
266 | 			//htim3.Instance->CR1 |= TIM_CR1_UDIS;		//URS=1, so no UG INT
267 | 			htim3.Instance->EGR |= TIM_EGR_UG;				// UG=1, clears TIM3 counter, in case we started out of sync with bitstream
268 | 			htim4.Instance->EGR |= TIM_EGR_UG;				//clear TIM4 too
269 | 			
270 | 			
271 | 			tim2_ch1_isr_ctr++;
272 | 			
273 | 			//this checks if we're overflowing SPI buffer -- for debug only
274 | 			frame_byte_ctr = spi_rx_ctr;
275 | 			d = __HAL_DMA_GET_COUNTER( &hdma_spi2_rx );
276 | 			if( d > 0 )
277 | 				frame_byte_ctr += (SPI_BSIZE - d);	// convert to byte counter with DMA register CNDTR, this is our latest EoF 
278 | 			
279 | 			if( frame_byte_ctr >= (usb_bytes_tx_ctr + SPI_BSIZE) )		//check if overflowing SPI buffer
280 | 				dbg_frame_overflow++;																		//debug counter
281 | 			
282 | 		}
283 | 	}
284 | }
285 | 
286 | /* USER CODE END 0 */
287 | 
288 | /**
289 |   * @brief  The application entry point.
290 |   * @retval int
291 |   */
292 | int main(void)
293 | {
294 |   /* USER CODE BEGIN 1 */
295 | 	uint32_t led_heartbeat = 0;
296 | 	uint16_t dmaout_idx;
297 | 	uint16_t dmain_ctr, dmaout_ctr;
298 | 	uint16_t n, next_ctr;
299 | 	int e;
300 | 	uint8_t usb_sync_flag2, usb_flush_flag2;
301 |   /* USER CODE END 1 */
302 | 
303 |   /* MCU Configuration--------------------------------------------------------*/
304 | 
305 |   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
306 |   HAL_Init();
307 | 
308 |   /* USER CODE BEGIN Init */
309 | 
310 |   /* USER CODE END Init */
311 | 
312 |   /* Configure the system clock */
313 |   SystemClock_Config();
314 | 
315 |   /* USER CODE BEGIN SysInit */
316 | 
317 |   /* USER CODE END SysInit */
318 | 
319 |   /* Initialize all configured peripherals */
320 |   MX_GPIO_Init();
321 |   MX_DMA_Init();
322 |   MX_SPI2_Init();
323 |   MX_TIM2_Init();
324 |   MX_TIM3_Init();
325 |   MX_TIM4_Init();
326 |   MX_USB_DEVICE_Init();
327 |   /* USER CODE BEGIN 2 */
328 | 	
329 | 	
330 | 	usb_sync_flag2 = usb_sync_flag;		//init flags
331 | 		
332 | 	
333 | 	/****** resync ************/
334 | 	//In case PC re-syncs, re-init TIMers, SPI. Don't Touch USB as this causes COM port grief!
335 | 	label_resync:		
336 | 	
337 | 	//undo/redo SPI 
338 | 	__HAL_DMA_DISABLE_IT( &hdma_spi2_rx, DMA_IT_TC );
339 | 	HAL_SPI_DeInit (&hspi2);
340 | 	MX_SPI2_Init();
341 | 	
342 | 	//turn off TIM 2,3,4
343 | 	HAL_TIM_OnePulse_Stop(&htim4,TIM_CHANNEL_1);
344 | 	HAL_TIM_OnePulse_Stop_IT (&htim2, TIM_CHANNEL_2);
345 | 	HAL_TIM_IC_Stop_IT(&htim3, TIM_CHANNEL_1);	
346 | 	
347 | 	//de-init'em
348 | 	HAL_TIM_OnePulse_DeInit(&htim2);
349 | 	HAL_TIM_OnePulse_DeInit(&htim3);
350 | 	HAL_TIM_IC_DeInit(&htim4);	
351 | 	
352 | 	//re-do'em
353 | 	MX_TIM2_Init();
354 | 	MX_TIM3_Init();
355 | 	MX_TIM4_Init();
356 | 	
357 | 	
358 | 	/******** end resync ***********/
359 | 	
360 | 	//wait for PC sync command
361 | 	while( usb_sync_flag2 == usb_sync_flag )
362 | 	{
363 | 		if( calc_ts_et( HAL_GetTick(), led_heartbeat ) >= 100 )		//fast pulse
364 | 		{
365 | 			HAL_GPIO_TogglePin(LED_GPIO_Port , LED_Pin );
366 | 			led_heartbeat = HAL_GetTick();
367 | 		}
368 | 	}
369 | 	
370 | 	usb_sync_flag2 = usb_sync_flag;		//done w/resync
371 | 	usb_flush_flag2 = usb_flush_flag;	//in case flushed
372 | 	
373 | 	//'manually' change timings if requested
374 | 	if( pchost_tim4_Period )
375 | 	{
376 | 		htim4.Instance->ARR = pchost_tim4_Period;
377 | 	}
378 | 	if( pchost_tim2_Pulse )
379 | 	{	
380 | 		htim2.Instance->CCR1 = pchost_tim2_Pulse;
381 | 		htim2.Instance->ARR = pchost_tim2_Pulse + 50;  //ARR > CCR1
382 | 	}
383 | 	
384 | 	
385 | 	// start TIM 2,3,4 
386 | 	HAL_TIM_OnePulse_Start (&htim4, TIM_CHANNEL_1);				//SCK generator 
387 | 	HAL_TIM_OnePulse_Start_IT (&htim2, TIM_CHANNEL_2);		//Frame timer, ARR is duration of TMO (CCR1+1), CCR1 = TMO delay
388 | 	htim2.Instance->EGR |= TIM_EGR_UG;										// UG=1, clears counter, CEN =0, let TIM3 ISR restart TIM2 to sync properly
389 | 	__HAL_TIM_DISABLE_IT(&htim2, TIM_IT_CC1);							//HAL turns on both CH1,2, turn off CH1 intr
390 | 	tim2_ch1_isr_ctr = 0;																	//reset before enabling TIM2 ISR
391 | 	
392 | 	HAL_TIM_IC_Start_IT (&htim3, TIM_CHANNEL_1);					//start SPI byte counter
393 | 	htim3.Instance->CR1 |= TIM_CR1_URS;										//only CNT generates INT
394 | 	
395 | 			
396 | 	//wait for Eof to sync to Neopixel bitstream
397 | 	while( tim2_ch1_isr_ctr == 0 )
398 | 	{
399 | 		if( calc_ts_et( HAL_GetTick(), led_heartbeat ) >= 200 )		//less fast pulse, in case SPI bitstream stopped.
400 | 		{
401 | 			HAL_GPIO_TogglePin(LED_GPIO_Port , LED_Pin );
402 | 			led_heartbeat = HAL_GetTick();
403 | 		}
404 | 	}
405 | 	
406 | 	//Will begin a new frame, reset input counters before next frame starts. 
407 | 	__disable_irq();
408 | 	frame_byte_ctr = 0;
409 | 	spi_rx_ctr = 0;		
410 | 	usb_bytes_tx_ctr = 0;	
411 | 	dmaout_ctr = SPI_BSIZE;
412 | 	__enable_irq();
413 | 	
414 | 	//start SPI Rx
415 | 	HAL_SPI_Receive_DMA ( &hspi2, spi_rx_buffer, SPI_BSIZE);
416 | 	__HAL_DMA_ENABLE_IT( &hdma_spi2_rx, DMA_IT_TC );
417 | 	
418 | 	
419 |   /* USER CODE END 2 */
420 | 
421 |   /* Infinite loop */
422 |   /* USER CODE BEGIN WHILE */
423 |   while (1)
424 |   {
425 |     /* USER CODE END WHILE */
426 | 
427 |     /* USER CODE BEGIN 3 */
428 | 		/* 
429 | 		Read SPI DMA downcounter, if changed convert to index, determine bytes to send to USB.
430 | 		Assumes did not wrap from the last read, otherwise buffer overrun (dbg_frame_overflow).
431 | 		Ignore CNDTR=0 as this means counter reload in progress -- not sure if our code ever sees this.
432 | 		*/
433 | 		
434 | 		dmain_ctr = __HAL_DMA_GET_COUNTER( &hdma_spi2_rx );	// DMA register CNDTR is decremented
435 | 		
436 | 		if( (dmain_ctr > 0) && (dmain_ctr != dmaout_ctr) )
437 | 		{
438 | 			if( dmaout_ctr > dmain_ctr )
439 | 			{
440 | 				n = dmaout_ctr - dmain_ctr;
441 | 				next_ctr = dmain_ctr;
442 | 			}
443 | 			else // dmain_ctr > dmaout_ctr, circular wrap occured, in_cnt =>0 then reloads to SPI_BSIZE
444 | 			{
445 | 				//do 2 transfers, 1st empties remaining buffer, then wraps, then perform this loop again next poll
446 | 				n = dmaout_ctr;				//remaining bytes
447 | 				next_ctr = SPI_BSIZE;	//reload out ctr
448 | 			}
449 | 			dmaout_idx = SPI_BSIZE - dmaout_ctr;	//convert to index 0..SPI_BSIZE-1
450 | 			dmaout_ctr = next_ctr;
451 | 						
452 | 			//blocking write to USB if waiting for previous transfer, if PC not connected/disconnects we'll overflow and stay in this loop.
453 | 			usb_busy = 0;
454 | 			while( (e = CDC_Transmit_FS( &spi_rx_buffer[dmaout_idx], n) ) != USBD_OK)
455 | 			{
456 | 				if( usb_flush_flag2 != usb_flush_flag )
457 | 				{	
458 | 					//PC wants to re-sync, while we're waiting
459 | 					CDC_Flush_FS();
460 | 					goto label_resync;
461 | 				}
462 | 				
463 | 				if(e == USBD_BUSY)
464 | 				{
465 | 					usb_busy++;						//in case waiting for last packet
466 | 				}
467 | 				else
468 | 					usb_fail++;						//some low-level failure, fairly rare.
469 | 			}
470 | 			
471 | 			
472 | 			if( e == USBD_OK )
473 | 			{
474 | 				usb_bytes_tx_ctr += n;	//this may wrap
475 | 			}
476 | 		}
477 | 		
478 | 		if( usb_flush_flag2 != usb_flush_flag )
479 | 		{	
480 | 			//PC wants to re-sync
481 | 			CDC_Flush_FS();
482 | 			goto label_resync;
483 | 		}
484 | 		
485 | 		//normal heartbeat LED
486 | 		if( calc_ts_et( HAL_GetTick(), led_heartbeat ) >= 500 )
487 | 		{
488 | 			HAL_GPIO_TogglePin(LED_GPIO_Port , LED_Pin );
489 | 			led_heartbeat = HAL_GetTick();
490 | 		}
491 |   }
492 |   /* USER CODE END 3 */
493 | }
494 | 
495 | /**
496 |   * @brief System Clock Configuration
497 |   * @retval None
498 |   */
499 | void SystemClock_Config(void)
500 | {
501 |   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
502 |   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
503 |   RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
504 | 
505 |   /** Initializes the RCC Oscillators according to the specified parameters
506 |   * in the RCC_OscInitTypeDef structure.
507 |   */
508 |   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
509 |   RCC_OscInitStruct.HSEState = RCC_HSE_ON;
510 |   RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
511 |   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
512 |   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
513 |   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
514 |   RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
515 |   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
516 |   {
517 |     Error_Handler();
518 |   }
519 |   /** Initializes the CPU, AHB and APB buses clocks
520 |   */
521 |   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
522 |                               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
523 |   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
524 |   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
525 |   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
526 |   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
527 | 
528 |   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
529 |   {
530 |     Error_Handler();
531 |   }
532 |   PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
533 |   PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLL_DIV1_5;
534 |   if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
535 |   {
536 |     Error_Handler();
537 |   }
538 | }
539 | 
540 | /**
541 |   * @brief SPI2 Initialization Function
542 |   * @param None
543 |   * @retval None
544 |   */
545 | static void MX_SPI2_Init(void)
546 | {
547 | 
548 |   /* USER CODE BEGIN SPI2_Init 0 */
549 | 
550 |   /* USER CODE END SPI2_Init 0 */
551 | 
552 |   /* USER CODE BEGIN SPI2_Init 1 */
553 | 
554 |   /* USER CODE END SPI2_Init 1 */
555 |   /* SPI2 parameter configuration*/
556 |   hspi2.Instance = SPI2;
557 |   hspi2.Init.Mode = SPI_MODE_SLAVE;
558 |   hspi2.Init.Direction = SPI_DIRECTION_2LINES_RXONLY;
559 |   hspi2.Init.DataSize = SPI_DATASIZE_8BIT;
560 |   hspi2.Init.CLKPolarity = SPI_POLARITY_LOW;
561 |   hspi2.Init.CLKPhase = SPI_PHASE_2EDGE;
562 |   hspi2.Init.NSS = SPI_NSS_SOFT;
563 |   hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
564 |   hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB;
565 |   hspi2.Init.TIMode = SPI_TIMODE_DISABLE;
566 |   hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
567 |   hspi2.Init.CRCPolynomial = 10;
568 |   if (HAL_SPI_Init(&hspi2) != HAL_OK)
569 |   {
570 |     Error_Handler();
571 |   }
572 |   /* USER CODE BEGIN SPI2_Init 2 */
573 | 
574 |   /* USER CODE END SPI2_Init 2 */
575 | 
576 | }
577 | 
578 | /**
579 |   * @brief TIM2 Initialization Function
580 |   * @param None
581 |   * @retval None
582 |   */
583 | static void MX_TIM2_Init(void)
584 | {
585 | 
586 |   /* USER CODE BEGIN TIM2_Init 0 */
587 | 
588 |   /* USER CODE END TIM2_Init 0 */
589 | 
590 |   TIM_SlaveConfigTypeDef sSlaveConfig = {0};
591 |   TIM_MasterConfigTypeDef sMasterConfig = {0};
592 |   TIM_OC_InitTypeDef sConfigOC = {0};
593 | 
594 |   /* USER CODE BEGIN TIM2_Init 1 */
595 | 
596 |   /* USER CODE END TIM2_Init 1 */
597 |   htim2.Instance = TIM2;
598 |   htim2.Init.Prescaler = 0;
599 |   htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
600 |   htim2.Init.Period = 3650;
601 |   htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
602 |   htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
603 |   if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
604 |   {
605 |     Error_Handler();
606 |   }
607 |   if (HAL_TIM_PWM_Init(&htim2) != HAL_OK)
608 |   {
609 |     Error_Handler();
610 |   }
611 |   if (HAL_TIM_OnePulse_Init(&htim2, TIM_OPMODE_SINGLE) != HAL_OK)
612 |   {
613 |     Error_Handler();
614 |   }
615 |   sSlaveConfig.SlaveMode = TIM_SLAVEMODE_TRIGGER;
616 |   sSlaveConfig.InputTrigger = TIM_TS_TI1FP1;
617 |   sSlaveConfig.TriggerPolarity = TIM_TRIGGERPOLARITY_RISING;
618 |   sSlaveConfig.TriggerFilter = 0;
619 |   if (HAL_TIM_SlaveConfigSynchro(&htim2, &sSlaveConfig) != HAL_OK)
620 |   {
621 |     Error_Handler();
622 |   }
623 |   sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
624 |   sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
625 |   if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
626 |   {
627 |     Error_Handler();
628 |   }
629 |   sConfigOC.OCMode = TIM_OCMODE_PWM2;
630 |   sConfigOC.Pulse = 3602;
631 |   sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
632 |   sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
633 |   if (HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_2) != HAL_OK)
634 |   {
635 |     Error_Handler();
636 |   }
637 |   /* USER CODE BEGIN TIM2_Init 2 */
638 | 
639 |   /* USER CODE END TIM2_Init 2 */
640 |   HAL_TIM_MspPostInit(&htim2);
641 | 
642 | }
643 | 
644 | /**
645 |   * @brief TIM3 Initialization Function
646 |   * @param None
647 |   * @retval None
648 |   */
649 | static void MX_TIM3_Init(void)
650 | {
651 | 
652 |   /* USER CODE BEGIN TIM3_Init 0 */
653 | 
654 |   /* USER CODE END TIM3_Init 0 */
655 | 
656 |   TIM_SlaveConfigTypeDef sSlaveConfig = {0};
657 |   TIM_MasterConfigTypeDef sMasterConfig = {0};
658 |   TIM_OC_InitTypeDef sConfigOC = {0};
659 | 
660 |   /* USER CODE BEGIN TIM3_Init 1 */
661 | 
662 |   /* USER CODE END TIM3_Init 1 */
663 |   htim3.Instance = TIM3;
664 |   htim3.Init.Prescaler = 0;
665 |   htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
666 |   htim3.Init.Period = 7;
667 |   htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
668 |   htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
669 |   if (HAL_TIM_Base_Init(&htim3) != HAL_OK)
670 |   {
671 |     Error_Handler();
672 |   }
673 |   if (HAL_TIM_OC_Init(&htim3) != HAL_OK)
674 |   {
675 |     Error_Handler();
676 |   }
677 |   sSlaveConfig.SlaveMode = TIM_SLAVEMODE_EXTERNAL1;
678 |   sSlaveConfig.InputTrigger = TIM_TS_ITR3;
679 |   if (HAL_TIM_SlaveConfigSynchro(&htim3, &sSlaveConfig) != HAL_OK)
680 |   {
681 |     Error_Handler();
682 |   }
683 |   sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
684 |   sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
685 |   if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK)
686 |   {
687 |     Error_Handler();
688 |   }
689 |   sConfigOC.OCMode = TIM_OCMODE_ACTIVE;
690 |   sConfigOC.Pulse = 1;
691 |   sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
692 |   sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
693 |   if (HAL_TIM_OC_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
694 |   {
695 |     Error_Handler();
696 |   }
697 |   /* USER CODE BEGIN TIM3_Init 2 */
698 | 
699 |   /* USER CODE END TIM3_Init 2 */
700 |   HAL_TIM_MspPostInit(&htim3);
701 | 
702 | }
703 | 
704 | /**
705 |   * @brief TIM4 Initialization Function
706 |   * @param None
707 |   * @retval None
708 |   */
709 | static void MX_TIM4_Init(void)
710 | {
711 | 
712 |   /* USER CODE BEGIN TIM4_Init 0 */
713 | 
714 |   /* USER CODE END TIM4_Init 0 */
715 | 
716 |   TIM_SlaveConfigTypeDef sSlaveConfig = {0};
717 |   TIM_MasterConfigTypeDef sMasterConfig = {0};
718 |   TIM_OC_InitTypeDef sConfigOC = {0};
719 | 
720 |   /* USER CODE BEGIN TIM4_Init 1 */
721 | 
722 |   /* USER CODE END TIM4_Init 1 */
723 |   htim4.Instance = TIM4;
724 |   htim4.Init.Prescaler = 0;
725 |   htim4.Init.CounterMode = TIM_COUNTERMODE_UP;
726 |   htim4.Init.Period = 37;
727 |   htim4.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
728 |   htim4.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
729 |   if (HAL_TIM_Base_Init(&htim4) != HAL_OK)
730 |   {
731 |     Error_Handler();
732 |   }
733 |   if (HAL_TIM_PWM_Init(&htim4) != HAL_OK)
734 |   {
735 |     Error_Handler();
736 |   }
737 |   if (HAL_TIM_OnePulse_Init(&htim4, TIM_OPMODE_SINGLE) != HAL_OK)
738 |   {
739 |     Error_Handler();
740 |   }
741 |   sSlaveConfig.SlaveMode = TIM_SLAVEMODE_TRIGGER;
742 |   sSlaveConfig.InputTrigger = TIM_TS_TI2FP2;
743 |   sSlaveConfig.TriggerPolarity = TIM_TRIGGERPOLARITY_RISING;
744 |   sSlaveConfig.TriggerFilter = 0;
745 |   if (HAL_TIM_SlaveConfigSynchro(&htim4, &sSlaveConfig) != HAL_OK)
746 |   {
747 |     Error_Handler();
748 |   }
749 |   sMasterConfig.MasterOutputTrigger = TIM_TRGO_OC1;
750 |   sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
751 |   if (HAL_TIMEx_MasterConfigSynchronization(&htim4, &sMasterConfig) != HAL_OK)
752 |   {
753 |     Error_Handler();
754 |   }
755 |   sConfigOC.OCMode = TIM_OCMODE_PWM2;
756 |   sConfigOC.Pulse = 1;
757 |   sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
758 |   sConfigOC.OCFastMode = TIM_OCFAST_ENABLE;
759 |   if (HAL_TIM_PWM_ConfigChannel(&htim4, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
760 |   {
761 |     Error_Handler();
762 |   }
763 |   /* USER CODE BEGIN TIM4_Init 2 */
764 | 
765 |   /* USER CODE END TIM4_Init 2 */
766 |   HAL_TIM_MspPostInit(&htim4);
767 | 
768 | }
769 | 
770 | /**
771 |   * Enable DMA controller clock
772 |   */
773 | static void MX_DMA_Init(void)
774 | {
775 | 
776 |   /* DMA controller clock enable */
777 |   __HAL_RCC_DMA1_CLK_ENABLE();
778 | 
779 |   /* DMA interrupt init */
780 |   /* DMA1_Channel4_IRQn interrupt configuration */
781 |   HAL_NVIC_SetPriority(DMA1_Channel4_IRQn, 0, 0);
782 |   HAL_NVIC_EnableIRQ(DMA1_Channel4_IRQn);
783 | 
784 | }
785 | 
786 | /**
787 |   * @brief GPIO Initialization Function
788 |   * @param None
789 |   * @retval None
790 |   */
791 | static void MX_GPIO_Init(void)
792 | {
793 |   GPIO_InitTypeDef GPIO_InitStruct = {0};
794 | 
795 |   /* GPIO Ports Clock Enable */
796 |   __HAL_RCC_GPIOC_CLK_ENABLE();
797 |   __HAL_RCC_GPIOD_CLK_ENABLE();
798 |   __HAL_RCC_GPIOA_CLK_ENABLE();
799 |   __HAL_RCC_GPIOB_CLK_ENABLE();
800 | 
801 |   /*Configure GPIO pin Output Level */
802 |   HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, GPIO_PIN_RESET);
803 | 
804 |   /*Configure GPIO pin : LED_Pin */
805 |   GPIO_InitStruct.Pin = LED_Pin;
806 |   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
807 |   GPIO_InitStruct.Pull = GPIO_NOPULL;
808 |   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
809 |   HAL_GPIO_Init(LED_GPIO_Port, &GPIO_InitStruct);
810 | 
811 | }
812 | 
813 | /* USER CODE BEGIN 4 */
814 | 
815 | /* USER CODE END 4 */
816 | 
817 | /**
818 |   * @brief  This function is executed in case of error occurrence.
819 |   * @retval None
820 |   */
821 | void Error_Handler(void)
822 | {
823 |   /* USER CODE BEGIN Error_Handler_Debug */
824 |   /* User can add his own implementation to report the HAL error return state */
825 |   __disable_irq();
826 |   while (1)
827 |   {
828 |   }
829 |   /* USER CODE END Error_Handler_Debug */
830 | }
831 | 
832 | #ifdef  USE_FULL_ASSERT
833 | /**
834 |   * @brief  Reports the name of the source file and the source line number
835 |   *         where the assert_param error has occurred.
836 |   * @param  file: pointer to the source file name
837 |   * @param  line: assert_param error line source number
838 |   * @retval None
839 |   */
840 | void assert_failed(uint8_t *file, uint32_t line)
841 | {
842 |   /* USER CODE BEGIN 6 */
843 |   /* User can add his own implementation to report the file name and line number,
844 |      ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
845 |   /* USER CODE END 6 */
846 | }
847 | #endif /* USE_FULL_ASSERT */
848 | 
849 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
850 | 


--------------------------------------------------------------------------------
/stripsim.py:
--------------------------------------------------------------------------------
  1 | """
  2 | stripsim.py
  3 | 
  4 | Graphical NeoPixel LED strip emulator.
  5 | Connect target's Neopixel output to NeoPill's (STM32 Bluepill) inputs.
  6 | Connect PC via USB to NeoPill for Neopixel->USB serial bridge. Find the appropriate COM port to use.
  7 | 
  8 | This code reads a yaml file for configuration.
  9 | Each LED is a simple rectangle or circle, with an optional small gap in-between.
 10 | 
 11 | Using a COM port, we sync to the pixel bitstream. Once sync'd each frame of pixel data is gamma-corrected and displayed as fast as possible.
 12 | Display frame rate dictated by the target device and config item 'fps_limit'. However, many LCD monitors only go to 60Hz.
 13 | 
 14 | Simple runtime controls (window active):
 15 |     mouseclick : shows runtime stats
 16 |     Up/Dn arrow: adjust gamma
 17 |     's': re-sync to the bitstream
 18 | 
 19 | COM port not connecting? Go into Windows DM and "disable/enable" the port.
 20 | This may be required after Bluepill reset.
 21 | 
 22 | Need to emulate with different bitstream timing?
 23 | timing_T1H, timing_RES config items.
 24 | 
 25 | For python 3.8.1
 26 | 
 27 | R. Elwin 5/2021
 28 | """
 29 | import threading
 30 | import queue
 31 | from typing import List, Any
 32 | import yaml  # 5.4.1
 33 | import pygame  # 2.0!
 34 | # from pygame.locals import *     # doing this floods debug with symbols so specify ones we actually use
 35 | from pygame.locals import QUIT, MOUSEBUTTONDOWN, KEYDOWN, K_UP, K_DOWN, K_s
 36 | import os
 37 | import time
 38 | import sys
 39 | import serial  # 3.5
 40 | 
 41 | os.environ['SDL_VIDEO_WINDOW_POS'] = "%d,%d" % (20, 20)  # default window position
 42 | 
 43 | 
 44 | # Init USB serial port, send optional timing string
 45 | def serial_init(com_port, timing_mod=None):
 46 |     try:
 47 |         ser = serial.Serial(com_port, baudrate=12000000, timeout=None)  # max USB speed, read timeout adjusted for debugging, timeout = None waits forever
 48 |         if timing_mod is not None:
 49 |             ser.write(bytearray(timing_mod.encode('utf-8')))  # send timing mod
 50 |             # ser.write(bytearray("T 38 3601".encode('utf-8')))      # test timing mod
 51 |             time.sleep(0.25)  # can't use flushInput() so delay instead
 52 |         return ser
 53 | 
 54 |     except serial.SerialException:
 55 |         print("SerialException: Can't Open", com_port)
 56 |         return None
 57 | 
 58 | 
 59 | # sync with NeoPill, may fail occasionally...
 60 | def serial_sync(ser):
 61 |     ser.write(bytearray("F".encode('utf-8')))  # send 'Flush' byte
 62 |     ser.reset_input_buffer()  # having issues with USB data not clearing (on Windows10) so loop a few times
 63 |     for d in range(0, 3):
 64 |         time.sleep(0.25)  # wait for USB drain
 65 |         ser.reset_input_buffer()  # in case frame data in the pipe
 66 |     ser.write(bytearray("S".encode('utf-8')))  # send sync start byte
 67 | 
 68 | 
 69 | class LEDStrip(object):
 70 |     """
 71 |     reads YAML config
 72 |     configures pygame window display
 73 |     generates LED display
 74 |     formats LED frames to window
 75 |     """
 76 |     # indicies for LED array surf_obj[0], rect[1], color[2]
 77 |     IDX_surf_obj = 0
 78 |     IDX_rect = 1
 79 |     IDX_color = 2
 80 | 
 81 |     def __init__(self, config_path):
 82 |         self.ledarray: List[Any] = []  # LED graphics elements
 83 |         self.led_display_format = None
 84 |         self.led_show = None
 85 |         self.screen = None
 86 |         self.ser = None
 87 |         self.serial_port = None
 88 |         self.timing_mod_T1H = None
 89 |         self.timing_mod_RES = None
 90 |         self.timing_mod = None
 91 |         self.strip_type = {}  # data from yaml file
 92 |         self.matrix_type = {}  # data from yaml file
 93 |         self.led_count = 0
 94 |         self.led_width = 1
 95 |         self.led_height = 1
 96 |         self.radius = 0
 97 |         self.center = 0
 98 |         self.gamma = 0.25  # LEDs are much brighter than LCD, smaller gamma=brighter. HW gamma not supported.
 99 |         self.frame_size = 0
100 |         self.display_rate_limit = 1 / 120  # 120Hz display rate limit default, might be too fast still
101 |         self.led_create = None
102 |         self.generate_display = None
103 |         self.read_config(config_path)
104 |         self.format_timing_mod()
105 |         self.generate_display()
106 |         self.led_create(self.led_count)  # only using 1 strip/matrix at a time so far
107 | 
108 |     # load the yaml file into ledlist{}
109 |     def read_config(self, config_path):
110 |         with open(config_path) as f:
111 |             data = yaml.load(f, Loader=yaml.FullLoader)
112 |             # print("Key: Value")
113 |             for key, value in data.items():
114 |                 if key == "strip":
115 |                     self.strip_type = value
116 |                     self.generate_display = self.generate_display_strip
117 |                     # print(self.strip_type)
118 |                 elif key == "matrix":
119 |                     self.matrix_type = value
120 |                     self.generate_display = self.generate_display_matrix
121 |                 elif key == "timing_T1H":
122 |                     self.timing_mod_T1H = value  # modified timing string
123 |                     print("Using Modified T1H timing", f"{value}")
124 |                 elif key == "timing_RES":
125 |                     self.timing_mod_RES = value  # modified timing string
126 |                     print("Using Modified RES timing", f"{value}")
127 |                 elif key == "serial_port":
128 |                     self.serial_port = value
129 |                 elif key == "fps_limit":
130 |                     self.display_rate_limit = 1 / (value * 1.1)  # use time per frame, plus 10% slop
131 | 
132 |     # format timing mod msg, specific to NeoPill timing. Calcs TIM2,4 delay, in clock counts (not ns).
133 |     def format_timing_mod(self):
134 |         cpu_clk = 13.88  # 13.88ns clk cycle, 1/72MHz
135 |         T1H = 0
136 |         if self.timing_mod_T1H is not None:
137 |             T1H = int((int(self.timing_mod_T1H) - 3 * cpu_clk) / cpu_clk)  # TIM4 ARR has 3 clk delay
138 |         RES = 0
139 |         if self.timing_mod_RES is not None:
140 |             RES = int(int(self.timing_mod_RES) / cpu_clk)  # TIM2 CCR1 count
141 |         # format a timing mod if using either
142 |         if self.timing_mod_T1H is not None or self.timing_mod_RES is not None:
143 |             self.timing_mod = "T " + str(T1H) + " " + str(RES)
144 | 
145 |     # generate pygame display window filled with LED strip
146 |     def generate_display_strip(self):
147 |         self.led_create = self.led_create_strip
148 |         os.environ['SDL_VIDEO_WINDOW_POS'] = "%d,%d" % (self.strip_type[0]['wposx'], self.strip_type[0]['wposy'])  # window position
149 |         self.led_count = self.strip_type[0]['num']
150 |         self.led_width = int(self.strip_type[0]['length'] / self.strip_type[0]['num']) - self.strip_type[0]['gap']
151 |         strip_width = (self.led_width + self.strip_type[0]['gap']) * self.strip_type[0]['num']
152 |         size = (strip_width, self.strip_type[0]['height'])  # create a strip
153 |         self.screen = pygame.display.set_mode(size, flags=0, display=0)  # vsync=0 default
154 |         pygame.display.set_caption(self.strip_type[0]['wname'])
155 |         print(pygame.display.get_driver())
156 |         print(pygame.display.Info())
157 | 
158 |     # populate LED array with LED surface objects, filled circles or plain squares
159 |     def led_create_strip(self, num):
160 |         for i in range(0, num):
161 |             surf = pygame.Surface((self.led_width, self.strip_type[0]['height']))  # surface object
162 |             rect = surf.get_rect()
163 |             rect.left = i * (self.led_width + self.strip_type[0]['gap'])
164 |             rect.top = 0
165 |             color = pygame.Color(0, (i * 3) % 256, 10, 255)  # initial RGBA color, also fills in Alpha of RGBA
166 |             self.ledarray.append((surf, rect, color))  # surf_obj[0], rect[1], color[2]
167 |         self.led_format(self.strip_type[0]['style'], self.strip_type[0]['ledcolor'], num)
168 | 
169 |     # generate pygame display window filled with LED matrix
170 |     def generate_display_matrix(self):
171 |         self.led_create = self.led_create_matrix
172 |         os.environ['SDL_VIDEO_WINDOW_POS'] = "%d,%d" % (self.matrix_type[0]['wposx'], self.matrix_type[0]['wposy'])  # window position
173 |         self.led_count = self.matrix_type[0]['matrix_w'] * self.matrix_type[0]['matrix_h']
174 |         self.led_width = int(self.matrix_type[0]['length'] / self.matrix_type[0]['matrix_w']) - self.matrix_type[0]['gap']  # gap is symmetric side & bottom
175 |         strip_width = (self.led_width + self.matrix_type[0]['gap']) * self.matrix_type[0]['matrix_w'] - self.matrix_type[0]['gap']
176 |         self.led_height = int(self.matrix_type[0]['height'] / self.matrix_type[0]['matrix_h']) - self.matrix_type[0]['gap']
177 |         strip_height = (self.led_height + self.matrix_type[0]['gap']) * self.matrix_type[0]['matrix_h'] - self.matrix_type[0]['gap']
178 |         size = (strip_width, strip_height)  # display (w,h), adjusted width, height
179 |         self.screen = pygame.display.set_mode(size, flags=0, display=0)  # vsync=0 default
180 |         pygame.display.set_caption(self.matrix_type[0]['wname'])
181 |         print(pygame.display.get_driver())
182 |         print(pygame.display.Info())
183 | 
184 |     # matrix option, populate LED array with LED surface objects, filled circles or plain squares
185 |     def led_create_matrix(self, num):
186 |         for j in range(0, self.matrix_type[0]['matrix_h']):
187 |             for i in range(0, self.matrix_type[0]['matrix_w']):
188 |                 surf = pygame.Surface((self.led_width, self.led_height))  # surface object
189 |                 rect = surf.get_rect()
190 |                 rect.left = i * (self.led_width + self.matrix_type[0]['gap'])
191 |                 rect.top = j * (self.led_height + self.matrix_type[0]['gap'])
192 |                 color = pygame.Color(j, (i * 3) % 256, 10, 255)  # initial RGBA color, also fills in Alpha of RGBA
193 |                 self.ledarray.append((surf, rect, color))  # surf_obj[0], rect[1], color[2]
194 |         self.led_format(self.matrix_type[0]['style'], self.matrix_type[0]['ledcolor'], num)
195 | 
196 |     # assign LED style, color order, frame size
197 |     def led_format(self, style, ledcolor, num):
198 |         if style == 'circle':
199 |             self.led_show = self.led_show_circle
200 |             # use ledarray[0] to get rect attributes to calc circle radius and center
201 |             self.radius = min(self.ledarray[0][LEDStrip.IDX_rect].h, self.ledarray[0][LEDStrip.IDX_rect].w) / 2
202 |             self.center = self.ledarray[0][LEDStrip.IDX_rect].w / 2, self.ledarray[0][LEDStrip.IDX_rect].h / 2
203 |         else:
204 |             self.led_show = self.led_show_rect
205 |         if ledcolor == 'GRBW':
206 |             self.led_display_format = self.led_frame_copy_GRBW
207 |             self.frame_size = 4 * num
208 |         elif ledcolor == 'GRB':
209 |             self.led_display_format = self.led_frame_copy_GRB
210 |             self.frame_size = 3 * num
211 |         else:
212 |             print("Error! No LED format, ledcolor: not assigned")
213 | 
214 |     # blit rectangular LEDs, then display
215 |     def led_show_rect(self):
216 |         for led in self.ledarray:
217 |             color = led[LEDStrip.IDX_color].correct_gamma(self.gamma)  # adjust gamma for each LED
218 |             led[LEDStrip.IDX_surf_obj].fill(color)  # color square
219 |             self.screen.blit(led[LEDStrip.IDX_surf_obj], led[LEDStrip.IDX_rect])
220 |         pygame.display.flip()
221 | 
222 |     # blit circular LEDs, then display
223 |     def led_show_circle(self):
224 |         for led in self.ledarray:
225 |             color = led[LEDStrip.IDX_color].correct_gamma(self.gamma)  # adjust gamma for each LED
226 |             pygame.draw.circle(led[LEDStrip.IDX_surf_obj], color, self.center, self.radius)
227 |             self.screen.blit(led[LEDStrip.IDX_surf_obj], led[LEDStrip.IDX_rect])
228 |         pygame.display.flip()
229 | 
230 |     # copy a frame of GRB LED data to RGBA LED array
231 |     def led_frame_copy_GRB(self, led_data_frame):
232 |         i = 0
233 |         for k in range(0, self.led_count):
234 |             self.ledarray[k][LEDStrip.IDX_color][1] = led_data_frame[i]  # G
235 |             i += 1
236 |             self.ledarray[k][LEDStrip.IDX_color][0] = led_data_frame[i]  # R
237 |             i += 1
238 |             self.ledarray[k][LEDStrip.IDX_color][2] = led_data_frame[i]  # B
239 |             i += 1
240 | 
241 |     # copy a frame of GRBW LED data to RGBA LED array
242 |     def led_frame_copy_GRBW(self, led_data_frame):
243 |         i = 0
244 |         for k in range(0, self.led_count):
245 |             self.ledarray[k][LEDStrip.IDX_color][1] = led_data_frame[i]  # G
246 |             i += 1
247 |             self.ledarray[k][LEDStrip.IDX_color][0] = led_data_frame[i]  # R
248 |             i += 1
249 |             self.ledarray[k][LEDStrip.IDX_color][2] = led_data_frame[i]  # B
250 |             i += 1
251 |             w = led_data_frame[i]
252 |             # what to do w/white LED? just saturate add to each color
253 |             if w > 0:
254 |                 for j in range(0, 3):
255 |                     c = self.ledarray[k][LEDStrip.IDX_color][j] + w
256 |                     if c > 255:
257 |                         c = 255
258 |                     self.ledarray[k][LEDStrip.IDX_color][j] = c
259 |             # ledarray[k][5][3] = 255     # alpha already populated
260 |             i += 1
261 | 
262 | 
263 | class SerialReader(object):
264 |     """
265 |     from Miniterm Terminal application.
266 |     Copy blksize data bytes from serial port to Queue q
267 |     """
268 | 
269 |     def __init__(self, serial_instance, q, blksize):
270 |         self.serial = serial_instance
271 |         self.alive = None
272 |         self._reader_alive = None
273 |         self.receiver_thread = None
274 |         self.q = q
275 |         self.blksize = blksize
276 | 
277 |     def _start_reader(self):
278 |         """Start reader thread"""
279 |         self._reader_alive = True
280 |         self.receiver_thread = threading.Thread(target=self.reader, name='rx')
281 |         self.receiver_thread.daemon = True
282 |         self.receiver_thread.start()
283 | 
284 |     def _stop_reader(self):
285 |         """Stop reader thread only, wait for clean exit of thread"""
286 |         self._reader_alive = False
287 |         self.receiver_thread.join()
288 | 
289 |     def start(self):
290 |         """start worker threads"""
291 |         self.alive = True
292 |         self._start_reader()
293 | 
294 |     def stop(self):
295 |         """set flag to stop worker threads"""
296 |         self.alive = False
297 |         self._stop_reader()
298 | 
299 |     def join(self, transmit_only=False):
300 |         """wait for worker threads to terminate"""
301 |         self.receiver_thread.join()
302 | 
303 |     def close(self):
304 |         self.serial.close()
305 | 
306 |     def reader(self):
307 |         """loop and queue serial data frames"""
308 |         try:
309 |             while self.alive and self._reader_alive:
310 |                 data = self.serial.read(self.blksize)
311 |                 self.q.put(data)
312 | 
313 |         except serial.SerialException:
314 |             self.alive = False
315 |             raise  # XXX handle instead of re-raise
316 | 
317 |     ##===============================================
318 | 
319 | 
320 | if __name__ == '__main__':
321 |     if len(sys.argv) < 2:
322 |         print("Missing config.yaml")
323 |         exit(-2)
324 |     print("pyserial ver:", serial.__version__)
325 |     print("pyYAML ver:", yaml.__version__)
326 |     pygame.init()
327 |     strip = LEDStrip(sys.argv[1])
328 |     strip.led_show()
329 |     ser = serial_init(strip.serial_port, strip.timing_mod)
330 |     if ser is None:
331 |         exit(-1)  # many reasons to not connect
332 |     print("Using COM Port:", ser.name)
333 | 
334 |     dataQueue = queue.Queue(1024)  # input data Q, in frames. Rather large in case you're moving the window.
335 |     sr = SerialReader(ser, dataQueue, strip.frame_size)
336 |     # initial sync, if this fails press then 's' ...
337 |     sr.start()
338 |     serial_sync(ser)  # resync and flush
339 | 
340 |     maxqsz = 0
341 |     frames_displayed = 0
342 |     frames_read = 0
343 |     t = time.perf_counter()
344 |     fps_t = time.perf_counter()
345 | 
346 |     while True:
347 |         if dataQueue.qsize() > 0:
348 |             frame_data = dataQueue.get()
349 |             frames_read += 1
350 |             # rate limit display
351 |             fps_et = time.perf_counter() - fps_t
352 |             if fps_et >= strip.display_rate_limit:
353 |                 fps_t = time.perf_counter()
354 |                 strip.led_display_format(frame_data)
355 |                 strip.led_show()
356 |                 frames_displayed += 1
357 |             if dataQueue.qsize() > maxqsz:
358 |                 maxqsz = dataQueue.qsize()
359 |         else:
360 |             time.sleep(0.0001)  # let input stream dictate FPS, but need a small sleep to keep CPU% lower
361 | 
362 |         # Cycles through all occurring events
363 |         for event in pygame.event.get():
364 |             if event.type == QUIT:
365 |                 pygame.quit()
366 |                 sys.exit()
367 |             elif event.type == MOUSEBUTTONDOWN:  # show some stats
368 |                 et = time.perf_counter() - t
369 |                 print("maxQ=", maxqsz, ", fps displayed=", int(frames_displayed / et), ", displayed rate b/s", int(frames_displayed / et) * strip.frame_size, ", input rate b/s=",
370 |                       int(frames_read / et) * strip.frame_size)
371 |                 t = time.perf_counter()
372 |                 frames_displayed = 0
373 |                 frames_read = 0
374 |                 maxqsz = 0
375 |             elif event.type == KEYDOWN:  # change gamma
376 |                 if event.key == K_UP:
377 |                     strip.gamma -= 0.01
378 |                 elif event.key == K_DOWN:
379 |                     strip.gamma += 0.01
380 |                 elif event.key == K_s:
381 |                     print("Sync")
382 |                     sr.stop()
383 |                     serial_sync(ser)  # try to resync, flush
384 |                     sr.start()
385 | 
386 |                 if strip.gamma > 1:
387 |                     strip.gamma = 1
388 |                 elif strip.gamma < 0:
389 |                     strip.gamma = 0.1
390 |                 print('{:.2f}'.format(strip.gamma))
391 | 


--------------------------------------------------------------------------------
/usbd_cdc_if.c:
--------------------------------------------------------------------------------
  1 | /* USER CODE BEGIN Header */
  2 | /**
  3 |   ******************************************************************************
  4 |   * @file           : usbd_cdc_if.c
  5 |   * @version        : v2.0_Cube
  6 |   * @brief          : Usb device for Virtual Com Port.
  7 |   ******************************************************************************
  8 |   * @attention
  9 |   *
 10 |   * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
 11 |   * All rights reserved.</center></h2>
 12 |   *
 13 |   * This software component is licensed by ST under Ultimate Liberty license
 14 |   * SLA0044, the "License"; You may not use this file except in compliance with
 15 |   * the License. You may obtain a copy of the License at:
 16 |   *                             www.st.com/SLA0044
 17 |   *
 18 |   ******************************************************************************
 19 |   */
 20 | /* USER CODE END Header */
 21 | 
 22 | /* Includes ------------------------------------------------------------------*/
 23 | #include "usbd_cdc_if.h"
 24 | 
 25 | /* USER CODE BEGIN INCLUDE */
 26 | 
 27 | /* USER CODE END INCLUDE */
 28 | 
 29 | /* Private typedef -----------------------------------------------------------*/
 30 | /* Private define ------------------------------------------------------------*/
 31 | /* Private macro -------------------------------------------------------------*/
 32 | 
 33 | /* USER CODE BEGIN PV */
 34 | /* Private variables ---------------------------------------------------------*/
 35 | 
 36 | /* USER CODE END PV */
 37 | 
 38 | /** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
 39 |   * @brief Usb device library.
 40 |   * @{
 41 |   */
 42 | 
 43 | /** @addtogroup USBD_CDC_IF
 44 |   * @{
 45 |   */
 46 | 
 47 | /** @defgroup USBD_CDC_IF_Private_TypesDefinitions USBD_CDC_IF_Private_TypesDefinitions
 48 |   * @brief Private types.
 49 |   * @{
 50 |   */
 51 | 
 52 | /* USER CODE BEGIN PRIVATE_TYPES */
 53 | 
 54 | /* USER CODE END PRIVATE_TYPES */
 55 | 
 56 | /**
 57 |   * @}
 58 |   */
 59 | 
 60 | /** @defgroup USBD_CDC_IF_Private_Defines USBD_CDC_IF_Private_Defines
 61 |   * @brief Private defines.
 62 |   * @{
 63 |   */
 64 | 
 65 | /* USER CODE BEGIN PRIVATE_DEFINES */
 66 | /* USER CODE END PRIVATE_DEFINES */
 67 | 
 68 | /**
 69 |   * @}
 70 |   */
 71 | 
 72 | /** @defgroup USBD_CDC_IF_Private_Macros USBD_CDC_IF_Private_Macros
 73 |   * @brief Private macros.
 74 |   * @{
 75 |   */
 76 | 
 77 | /* USER CODE BEGIN PRIVATE_MACRO */
 78 | 
 79 | /* USER CODE END PRIVATE_MACRO */
 80 | 
 81 | /**
 82 |   * @}
 83 |   */
 84 | 
 85 | /** @defgroup USBD_CDC_IF_Private_Variables USBD_CDC_IF_Private_Variables
 86 |   * @brief Private variables.
 87 |   * @{
 88 |   */
 89 | /* Create buffer for reception and transmission           */
 90 | /* It's up to user to redefine and/or remove those define */
 91 | /** Received data over USB are stored in this buffer      */
 92 | uint8_t UserRxBufferFS[APP_RX_DATA_SIZE];
 93 | 
 94 | /** Data to send over USB CDC are stored in this buffer   */
 95 | uint8_t UserTxBufferFS[APP_TX_DATA_SIZE];
 96 | 
 97 | /* USER CODE BEGIN PRIVATE_VARIABLES */
 98 | 
 99 | /* USER CODE END PRIVATE_VARIABLES */
100 | 
101 | /**
102 |   * @}
103 |   */
104 | 
105 | /** @defgroup USBD_CDC_IF_Exported_Variables USBD_CDC_IF_Exported_Variables
106 |   * @brief Public variables.
107 |   * @{
108 |   */
109 | 
110 | extern USBD_HandleTypeDef hUsbDeviceFS;
111 | 
112 | /* USER CODE BEGIN EXPORTED_VARIABLES */
113 | 
114 | /* USER CODE END EXPORTED_VARIABLES */
115 | 
116 | /**
117 |   * @}
118 |   */
119 | 
120 | /** @defgroup USBD_CDC_IF_Private_FunctionPrototypes USBD_CDC_IF_Private_FunctionPrototypes
121 |   * @brief Private functions declaration.
122 |   * @{
123 |   */
124 | 
125 | static int8_t CDC_Init_FS(void);
126 | static int8_t CDC_DeInit_FS(void);
127 | static int8_t CDC_Control_FS(uint8_t cmd, uint8_t* pbuf, uint16_t length);
128 | static int8_t CDC_Receive_FS(uint8_t* pbuf, uint32_t *Len);
129 | 
130 | /* USER CODE BEGIN PRIVATE_FUNCTIONS_DECLARATION */
131 | 
132 | /* USER CODE END PRIVATE_FUNCTIONS_DECLARATION */
133 | 
134 | /**
135 |   * @}
136 |   */
137 | 
138 | USBD_CDC_ItfTypeDef USBD_Interface_fops_FS =
139 | {
140 |   CDC_Init_FS,
141 |   CDC_DeInit_FS,
142 |   CDC_Control_FS,
143 |   CDC_Receive_FS
144 | };
145 | 
146 | /* Private functions ---------------------------------------------------------*/
147 | /**
148 |   * @brief  Initializes the CDC media low layer over the FS USB IP
149 |   * @retval USBD_OK if all operations are OK else USBD_FAIL
150 |   */
151 | static int8_t CDC_Init_FS(void)
152 | {
153 |   /* USER CODE BEGIN 3 */
154 |   /* Set Application Buffers */
155 |   USBD_CDC_SetTxBuffer(&hUsbDeviceFS, UserTxBufferFS, 0);
156 |   USBD_CDC_SetRxBuffer(&hUsbDeviceFS, UserRxBufferFS);
157 |   return (USBD_OK);
158 |   /* USER CODE END 3 */
159 | }
160 | 
161 | /**
162 |   * @brief  DeInitializes the CDC media low layer
163 |   * @retval USBD_OK if all operations are OK else USBD_FAIL
164 |   */
165 | static int8_t CDC_DeInit_FS(void)
166 | {
167 |   /* USER CODE BEGIN 4 */
168 |   return (USBD_OK);
169 |   /* USER CODE END 4 */
170 | }
171 | 
172 | /**
173 |   * @brief  Manage the CDC class requests
174 |   * @param  cmd: Command code
175 |   * @param  pbuf: Buffer containing command data (request parameters)
176 |   * @param  length: Number of data to be sent (in bytes)
177 |   * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
178 |   */
179 | static int8_t CDC_Control_FS(uint8_t cmd, uint8_t* pbuf, uint16_t length)
180 | {
181 |   /* USER CODE BEGIN 5 */
182 |   switch(cmd)
183 |   {
184 |     case CDC_SEND_ENCAPSULATED_COMMAND:
185 | 
186 |     break;
187 | 
188 |     case CDC_GET_ENCAPSULATED_RESPONSE:
189 | 
190 |     break;
191 | 
192 |     case CDC_SET_COMM_FEATURE:
193 | 
194 |     break;
195 | 
196 |     case CDC_GET_COMM_FEATURE:
197 | 
198 |     break;
199 | 
200 |     case CDC_CLEAR_COMM_FEATURE:
201 | 
202 |     break;
203 | 
204 |   /*******************************************************************************/
205 |   /* Line Coding Structure                                                       */
206 |   /*-----------------------------------------------------------------------------*/
207 |   /* Offset | Field       | Size | Value  | Description                          */
208 |   /* 0      | dwDTERate   |   4  | Number |Data terminal rate, in bits per second*/
209 |   /* 4      | bCharFormat |   1  | Number | Stop bits                            */
210 |   /*                                        0 - 1 Stop bit                       */
211 |   /*                                        1 - 1.5 Stop bits                    */
212 |   /*                                        2 - 2 Stop bits                      */
213 |   /* 5      | bParityType |  1   | Number | Parity                               */
214 |   /*                                        0 - None                             */
215 |   /*                                        1 - Odd                              */
216 |   /*                                        2 - Even                             */
217 |   /*                                        3 - Mark                             */
218 |   /*                                        4 - Space                            */
219 |   /* 6      | bDataBits  |   1   | Number Data bits (5, 6, 7, 8 or 16).          */
220 |   /*******************************************************************************/
221 |     case CDC_SET_LINE_CODING:
222 | 
223 |     break;
224 | 
225 |     case CDC_GET_LINE_CODING:
226 | 
227 |     break;
228 | 
229 |     case CDC_SET_CONTROL_LINE_STATE:
230 | 
231 |     break;
232 | 
233 |     case CDC_SEND_BREAK:
234 | 
235 |     break;
236 | 
237 |   default:
238 |     break;
239 |   }
240 | 
241 |   return (USBD_OK);
242 |   /* USER CODE END 5 */
243 | }
244 | 
245 | /**
246 |   * @brief  Data received over USB OUT endpoint are sent over CDC interface
247 |   *         through this function.
248 |   *
249 |   *         @note
250 |   *         This function will issue a NAK packet on any OUT packet received on
251 |   *         USB endpoint until exiting this function. If you exit this function
252 |   *         before transfer is complete on CDC interface (ie. using DMA controller)
253 |   *         it will result in receiving more data while previous ones are still
254 |   *         not sent.
255 |   *
256 |   * @param  Buf: Buffer of data to be received
257 |   * @param  Len: Number of data received (in bytes)
258 |   * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
259 |   */
260 | static int8_t CDC_Receive_FS(uint8_t* Buf, uint32_t *Len)
261 | {
262 |   /* USER CODE BEGIN 6 */
263 | 	extern volatile uint8_t usb_sync_flag;
264 | 	extern volatile uint8_t usb_flush_flag;
265 | 	extern void pc_host_timing_req(uint8_t* Buf, uint32_t Len);
266 | 	
267 |   USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]);
268 |   USBD_CDC_ReceivePacket(&hUsbDeviceFS);
269 | 	
270 | 	//simple in-band commands
271 | 	if( *Len > 0 )
272 | 	{
273 | 		if( Buf[0] == 'S' )
274 | 		{
275 | 			usb_sync_flag++;
276 | 		}
277 | 		else if( Buf[0] == 'F' )
278 | 		{
279 | 			usb_flush_flag++;
280 | 		}
281 | 		else if( Buf[0] == 'T' )
282 | 		{
283 | 			pc_host_timing_req( Buf, *Len);
284 | 		}
285 | 	}
286 | 	
287 |   return (USBD_OK);
288 |   /* USER CODE END 6 */
289 | }
290 | 
291 | /**
292 |   * @brief  CDC_Transmit_FS
293 |   *         Data to send over USB IN endpoint are sent over CDC interface
294 |   *         through this function.
295 |   *         @note
296 |   *
297 |   *
298 |   * @param  Buf: Buffer of data to be sent
299 |   * @param  Len: Number of data to be sent (in bytes)
300 |   * @retval USBD_OK if all operations are OK else USBD_FAIL or USBD_BUSY
301 |   */
302 | uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len)
303 | {
304 |   uint8_t result = USBD_OK;
305 |   /* USER CODE BEGIN 7 */
306 |   USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*)hUsbDeviceFS.pClassData;
307 |   if (hcdc->TxState != 0){
308 |     return USBD_BUSY;
309 |   }
310 |   USBD_CDC_SetTxBuffer(&hUsbDeviceFS, Buf, Len);
311 |   result = USBD_CDC_TransmitPacket(&hUsbDeviceFS);
312 |   /* USER CODE END 7 */
313 |   return result;
314 | }
315 | 
316 | /* USER CODE BEGIN PRIVATE_FUNCTIONS_IMPLEMENTATION */
317 | 
318 | //Flush endpoint test
319 | uint8_t CDC_Flush_FS(void)
320 | {
321 | 	uint8_t result = USBD_OK;
322 | 
323 | 	result = USBD_LL_FlushEP(&hUsbDeviceFS, CDC_IN_EP);
324 | 	return result;
325 | }
326 | 
327 | 
328 | /* USER CODE END PRIVATE_FUNCTIONS_IMPLEMENTATION */
329 | 
330 | /**
331 |   * @}
332 |   */
333 | 
334 | /**
335 |   * @}
336 |   */
337 | 
338 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
339 | 


--------------------------------------------------------------------------------
/usbd_cdc_if.h:
--------------------------------------------------------------------------------
  1 | /* USER CODE BEGIN Header */
  2 | /**
  3 |   ******************************************************************************
  4 |   * @file           : usbd_cdc_if.h
  5 |   * @version        : v2.0_Cube
  6 |   * @brief          : Header for usbd_cdc_if.c file.
  7 |   ******************************************************************************
  8 |   * @attention
  9 |   *
 10 |   * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
 11 |   * All rights reserved.</center></h2>
 12 |   *
 13 |   * This software component is licensed by ST under Ultimate Liberty license
 14 |   * SLA0044, the "License"; You may not use this file except in compliance with
 15 |   * the License. You may obtain a copy of the License at:
 16 |   *                             www.st.com/SLA0044
 17 |   *
 18 |   ******************************************************************************
 19 |   */
 20 | /* USER CODE END Header */
 21 | 
 22 | /* Define to prevent recursive inclusion -------------------------------------*/
 23 | #ifndef __USBD_CDC_IF_H__
 24 | #define __USBD_CDC_IF_H__
 25 | 
 26 | #ifdef __cplusplus
 27 |  extern "C" {
 28 | #endif
 29 | 
 30 | /* Includes ------------------------------------------------------------------*/
 31 | #include "usbd_cdc.h"
 32 | 
 33 | /* USER CODE BEGIN INCLUDE */
 34 | 
 35 | /* USER CODE END INCLUDE */
 36 | 
 37 | /** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
 38 |   * @brief For Usb device.
 39 |   * @{
 40 |   */
 41 | 
 42 | /** @defgroup USBD_CDC_IF USBD_CDC_IF
 43 |   * @brief Usb VCP device module
 44 |   * @{
 45 |   */
 46 | 
 47 | /** @defgroup USBD_CDC_IF_Exported_Defines USBD_CDC_IF_Exported_Defines
 48 |   * @brief Defines.
 49 |   * @{
 50 |   */
 51 | /* USER CODE BEGIN EXPORTED_DEFINES */
 52 | /* Define size for the receive and transmit buffer over CDC */
 53 | /* It's up to user to redefine and/or remove those define */
 54 | #define APP_RX_DATA_SIZE  128
 55 | #define APP_TX_DATA_SIZE  1		//Tx packet not used
 56 | 
 57 | /* USER CODE END EXPORTED_DEFINES */
 58 | 
 59 | /**
 60 |   * @}
 61 |   */
 62 | 
 63 | /** @defgroup USBD_CDC_IF_Exported_Types USBD_CDC_IF_Exported_Types
 64 |   * @brief Types.
 65 |   * @{
 66 |   */
 67 | 
 68 | /* USER CODE BEGIN EXPORTED_TYPES */
 69 | 
 70 | /* USER CODE END EXPORTED_TYPES */
 71 | 
 72 | /**
 73 |   * @}
 74 |   */
 75 | 
 76 | /** @defgroup USBD_CDC_IF_Exported_Macros USBD_CDC_IF_Exported_Macros
 77 |   * @brief Aliases.
 78 |   * @{
 79 |   */
 80 | 
 81 | /* USER CODE BEGIN EXPORTED_MACRO */
 82 | 
 83 | /* USER CODE END EXPORTED_MACRO */
 84 | 
 85 | /**
 86 |   * @}
 87 |   */
 88 | 
 89 | /** @defgroup USBD_CDC_IF_Exported_Variables USBD_CDC_IF_Exported_Variables
 90 |   * @brief Public variables.
 91 |   * @{
 92 |   */
 93 | 
 94 | /** CDC Interface callback. */
 95 | extern USBD_CDC_ItfTypeDef USBD_Interface_fops_FS;
 96 | 
 97 | /* USER CODE BEGIN EXPORTED_VARIABLES */
 98 | 
 99 | /* USER CODE END EXPORTED_VARIABLES */
100 | 
101 | /**
102 |   * @}
103 |   */
104 | 
105 | /** @defgroup USBD_CDC_IF_Exported_FunctionsPrototype USBD_CDC_IF_Exported_FunctionsPrototype
106 |   * @brief Public functions declaration.
107 |   * @{
108 |   */
109 | 
110 | uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len);
111 | 
112 | /* USER CODE BEGIN EXPORTED_FUNCTIONS */
113 | 
114 | /* USER CODE END EXPORTED_FUNCTIONS */
115 | 
116 | /**
117 |   * @}
118 |   */
119 | 
120 | /**
121 |   * @}
122 |   */
123 | 
124 | /**
125 |   * @}
126 |   */
127 | 
128 | #ifdef __cplusplus
129 | }
130 | #endif
131 | 
132 | #endif /* __USBD_CDC_IF_H__ */
133 | 
134 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
135 | 


--------------------------------------------------------------------------------