├── .gitignore ├── LICENSE ├── README.md ├── STL └── EWRF_E7082VM_bootloader_flash_helper │ ├── EWRF_E7082VM_bootloader_flash_helper.scad │ ├── EWRF_E7082VM_bootloader_flash_helper.stl │ ├── README.md │ └── img │ ├── EWRF_E7082VM_bootloader_flash_helper.png │ ├── EWRF_E7082VM_bootloader_flash_helper_P1010001.JPG │ └── EWRF_E7082VM_bootloader_flash_helper_P1010002.JPG ├── boards └── gd32f130g6.json ├── platformio.ini ├── release └── Generic_GD32F130_bootloader.bin └── src ├── gd32f1x0 ├── flash.c ├── flash.h ├── gd32f1x0.c ├── gd32f1x0_libopt.h ├── gpio.c ├── gpio.h ├── it.c ├── it.h ├── linker.ld ├── pins.h ├── serial.c └── serial.h ├── helpers.h ├── main.c ├── main.h ├── xmodem.c └── xmodem.h /.gitignore: -------------------------------------------------------------------------------- 1 | .pio 2 | .vscode/.browse.c_cpp.db* 3 | .vscode/c_cpp_properties.json 4 | .vscode/launch.json 5 | .vscode/ipch 6 | *.code-workspace 7 | .vscode 8 | __pycache__ 9 | *.pyc 10 | *.map 11 | binaries 12 | dump 13 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | **Bootloader for Open source video transmitter firmware** 2 | 3 | OpenVTx firmware can be found from https://github.com/OpenVTx/OpenVTx 4 | 5 | # Flashing the VTx bootloader 6 | 7 | See [OpenVTx flashing documentation](https://github.com/OpenVTx/OpenVTx#diy-setup-and-flashing-the-ewrf-e7082vm) how to 8 | connect ST-Link. 9 | 10 | See [EWRF E7082VM bootloader flash helper](https://github.com/OpenVTx/OpenVTx_bootloader/tree/master/STL/EWRF_E7082VM_bootloader_flash_helper) for a 3D print to help with initial bootloader flash. 11 | 12 | Select `Generic_GD32F130_bootloader` env and hit upload to flash a bootloader. 13 | 14 | *Note: This automatically removes protections so no need to use ST-Link Utility anymore. Make sure the red led starts blinking after flashing! If not you might need open ST-Link utility and just apply option bytes. This seems to be a problem with some GD32 MCUs* 15 | 16 | Next you need to flash OpenVTx firmware: 17 | * Connect VTX to FC. 18 | * Select protocol `VTX (TBS SmartAudio)`. After the first flash any protocol can be used for future flashing. 19 | * Go to https://openvtx.org/, select a Target, then Flash. 20 | 21 | Happy flying :) 22 | -------------------------------------------------------------------------------- /STL/EWRF_E7082VM_bootloader_flash_helper/EWRF_E7082VM_bootloader_flash_helper.scad: -------------------------------------------------------------------------------- 1 | /* 2 | 2022-07-23 3 | Notes: pin labeling did not print correctly so they have been commented out. The wire path intended for strain relief did not seem big enough for both wires and probably should be enlarged. 4 | 5 | 2022-07-02 6 | This OpenSCAD design allows for OpenVTX bootloader programming onto the EWRF E7082VM board without needing to solder leads onto the CLK or DIO pads. You will still need to connect power and a common ground to the ST-LINK V2. I have verified this print allowed me to flash OpenVTX bootloader to my VTX labeled 7082VM V12. I printed this in TPU/TPE and needed to re-poke holes for the wires with a sim card eject tool. I then ran some solid hook up wire as shown in images taking care that the wires do not short. In order to make good contact with the CLK and DIO pads I do recomend utilizing a sharp hobby knife to carefully shave the excess perferations from the side of the PCB until smooth. 7 | 8 | */ 9 | $fn=90; 10 | 11 | BoardWidth=14; 12 | BoardLength=15; 13 | BoardThick=0.8; 14 | PadRad=0.9*0.5; // actual diameter 0.6mm is a bit small for most printers 15 | PadPostRad=1.8*0.5; 16 | PadAWidth=1; 17 | PadALength=5.8; 18 | PadBWidth=2; 19 | PadBLength=4.8; 20 | HolderThick=3; 21 | HolderPadding=2; 22 | HolderBaseOverhang=3; 23 | HolderMaxOverhang=6; 24 | HolderMaxOverhangLength=(PadALength-PadBLength)*0.5+PadBLength; 25 | HolderRad=5*0.5; 26 | ConduitRad=2.6*0.5; 27 | TextSize=2.1; 28 | 29 | 30 | rotate([0,180,0]) EWRF_E7082VM_bootloader_flash_helper(); 31 | 32 | // 33 | module EWRF_E7082VM_bootloader_flash_helper(){ 34 | difference(){ 35 | hull(){ 36 | // first corner 37 | translate([0,0,(HolderThick+HolderPadding)*0.5]) cylinder(HolderThick+HolderPadding,HolderPadding,HolderPadding,true); 38 | // far corner 39 | translate([0,BoardLength,(HolderThick+HolderPadding)*0.5]) cylinder(HolderThick+HolderPadding,HolderPadding,HolderPadding,true); 40 | // first corner 41 | translate([HolderPadding,0,(HolderThick+HolderPadding)*0.5]) cylinder(HolderThick+HolderPadding,HolderPadding,HolderPadding,true); 42 | // far corner 43 | translate([HolderPadding,BoardLength,(HolderThick+HolderPadding)*0.5]) cylinder(HolderThick+HolderPadding,HolderPadding,HolderPadding,true); 44 | // thumb tab 45 | translate([HolderMaxOverhang-HolderRad,HolderMaxOverhangLength,(HolderThick+HolderPadding)*0.5]) cylinder(HolderThick+HolderPadding,HolderRad,HolderRad,true); 46 | // Conduit 47 | translate([HolderBaseOverhang*0.25,-HolderPadding,(HolderThick+HolderPadding)*0.5]) cylinder(HolderThick+HolderPadding,ConduitRad+HolderPadding*0.5,ConduitRad+HolderPadding*0.5,true); 48 | } 49 | // begin main difference items 50 | // main board cavity 51 | difference(){ 52 | translate([0,0,-0.02]) cube([BoardWidth,BoardLength,HolderThick]); 53 | hull(){ 54 | // PadA Post 55 | translate([PadAWidth,PadALength,(HolderThick+HolderPadding)*1-BoardThick]) cylinder(HolderThick+HolderPadding+0.04,PadPostRad,PadPostRad,true); 56 | // PadB Post 57 | translate([PadBWidth,PadBLength,(HolderThick+HolderPadding)*1-BoardThick]) cylinder(HolderThick+HolderPadding+0.04,PadPostRad,PadPostRad,true); 58 | } 59 | } 60 | // PadA cavity 61 | translate([PadAWidth,PadALength,(HolderThick+HolderPadding)*0.5]) cylinder(HolderThick+HolderPadding+0.04,PadRad,PadRad,true); 62 | // PadB cavity 63 | translate([PadBWidth,PadBLength,(HolderThick+HolderPadding)*0.5]) cylinder(HolderThick+HolderPadding+0.04,PadRad,PadRad,true); 64 | //conduit cavity 65 | translate([HolderBaseOverhang*0.25,-HolderPadding,(HolderThick+HolderPadding)*0.5]) cylinder(HolderThick+HolderPadding+0.04,ConduitRad,ConduitRad,true); 66 | // text label DIO 67 | //translate([-1.6,PadALength+1,HolderThick+HolderPadding-0.8]) linear_extrude(1) text("DIO", size = TextSize); 68 | // text label CLK 69 | //translate([-1.6,PadBLength-2.8,HolderThick+HolderPadding-0.8]) linear_extrude(1) text("CLK", size = TextSize); 70 | } 71 | } -------------------------------------------------------------------------------- /STL/EWRF_E7082VM_bootloader_flash_helper/EWRF_E7082VM_bootloader_flash_helper.stl: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/OpenVTx/OpenVTx_bootloader/10161c4c70f69dfe4301de68b2f0b1413b913489/STL/EWRF_E7082VM_bootloader_flash_helper/EWRF_E7082VM_bootloader_flash_helper.stl -------------------------------------------------------------------------------- /STL/EWRF_E7082VM_bootloader_flash_helper/README.md: -------------------------------------------------------------------------------- 1 | # EWRF E7082VM bootloader flash helper 2 | 3 | ### Please utilize this programming adapter at your own risk, report any issues you may find, and/or submit improvements. 4 | 5 | This OpenSCAD design allows for OpenVTX bootloader programming onto the EWRF E7082VM board without needing to solder leads onto the CLK or DIO pads. You will still need to connect power and a common ground to the ST-LINK V2. I have verified this print allowed me to flash OpenVTX bootloader to my VTX labeled 7082VM V12. I printed this in TPU/TPE and needed to re-poke holes for the wires with a sim card eject tool. I then ran some solid hook up wire as shown in images taking care that the wires do not short. In order to make good contact with the CLK and DIO pads I do recomend utilizing a sharp hobby knife to carefully shave the excess perferations from the side of the PCB until smooth. 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | info that would be helpful to add: 15 | -test/usage result reports. It worked for me on my only board (V12). 16 | -image showing shaving away of board perferations 17 | -image of ST-Link V2 and 7082VM connected for programming 18 | -image holing helper in place for programming 19 | -------------------------------------------------------------------------------- /STL/EWRF_E7082VM_bootloader_flash_helper/img/EWRF_E7082VM_bootloader_flash_helper.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/OpenVTx/OpenVTx_bootloader/10161c4c70f69dfe4301de68b2f0b1413b913489/STL/EWRF_E7082VM_bootloader_flash_helper/img/EWRF_E7082VM_bootloader_flash_helper.png -------------------------------------------------------------------------------- /STL/EWRF_E7082VM_bootloader_flash_helper/img/EWRF_E7082VM_bootloader_flash_helper_P1010001.JPG: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/OpenVTx/OpenVTx_bootloader/10161c4c70f69dfe4301de68b2f0b1413b913489/STL/EWRF_E7082VM_bootloader_flash_helper/img/EWRF_E7082VM_bootloader_flash_helper_P1010001.JPG -------------------------------------------------------------------------------- /STL/EWRF_E7082VM_bootloader_flash_helper/img/EWRF_E7082VM_bootloader_flash_helper_P1010002.JPG: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/OpenVTx/OpenVTx_bootloader/10161c4c70f69dfe4301de68b2f0b1413b913489/STL/EWRF_E7082VM_bootloader_flash_helper/img/EWRF_E7082VM_bootloader_flash_helper_P1010002.JPG -------------------------------------------------------------------------------- /boards/gd32f130g6.json: -------------------------------------------------------------------------------- 1 | { 2 | "build": { 3 | "core": "gd32", 4 | "cpu": "cortex-m3", 5 | "extra_flags": "-DGD32F1x0=1 -DGD32F130=1 -DGD32F130_150=1 -D__GD32F130_SUBFAMILY -D__GD32F1x0_FAMILY", 6 | "f_cpu": "72000000L", 7 | "ldscript": "src/gd32f1x0/linker.ld", 8 | "mcu": "gd32f130g6u6" 9 | }, 10 | "connectivity": [], 11 | "debug": { 12 | "default_tools": [ 13 | "stlink" 14 | ], 15 | "jlink_device": "GD32F130C6", 16 | "onboard_tools": [ 17 | "stlink" 18 | ], 19 | "openocd_target": "stm32f1x", 20 | "svd_path": "STM32F10x.svd" 21 | }, 22 | "frameworks": [ 23 | "stm32cube", 24 | "spl" 25 | ], 26 | "name": "GigaDevice GD32F130G6U6 (32kB of flash and 4k of RAM)", 27 | "upload": { 28 | "maximum_ram_size": 4096, 29 | "maximum_size": 8196, 30 | "protocol": "stlink", 31 | "protocols": [ 32 | "jlink", 33 | "stlink", 34 | "blackmagic", 35 | "mbed" 36 | ] 37 | }, 38 | "url": "https://www.gigadevice.com/microcontroller/gd32f130g6u6/", 39 | "vendor": "GigaDevice" 40 | } 41 | -------------------------------------------------------------------------------- /platformio.ini: -------------------------------------------------------------------------------- 1 | [platformio] 2 | default_envs = Generic_GD32F130_bootloader 3 | 4 | [env] 5 | src_filter = +<*.c> 6 | monitor_speed = 9600 7 | build_flags = 8 | -D DEBUG=0 9 | -Wl,-Map,firmware.map 10 | 11 | # ----------------------------- 12 | 13 | [env_gd32f130] 14 | platform = ststm32@15.4.1 15 | platform_packages = 16 | maxgerhardt/framework-spl@2.10300.0 17 | platformio/tool-dfuutil@1.11.0 18 | platformio/tool-openocd@2.1100.211028 19 | platformio/tool-stm32duino@1.0.1 20 | platformio/toolchain-gccarmnoneeabi@1.70201.0 21 | framework = spl 22 | board = gd32f130g6 23 | src_filter = 24 | ${env.src_filter} 25 | + 26 | build_flags = 27 | ${env.build_flags} 28 | -I src/gd32f1x0 29 | --specs=nano.specs 30 | #-D HXTAL_VALUE=8000000 31 | #-D __SYSTEM_CLOCK_72M_PLL_HXTAL=72000000U 32 | 33 | # ----------------------------- 34 | 35 | [env:Generic_GD32F130_bootloader] 36 | extends = env_gd32f130 37 | upload_protocol = custom 38 | upload_command = 39 | openocd -d2 -f interface/stlink.cfg -c "transport select hla_swd" -f target/stm32f1x.cfg -c "init; reset halt; stm32f1x unlock 0; reset halt; exit;" 40 | openocd -d2 -f interface/stlink.cfg -c "transport select hla_swd" -f target/stm32f1x.cfg -c "init; reset halt; wait_halt; stm32f1x mass_erase 0; sleep 200; reset halt; exit;" 41 | openocd -d2 -f interface/stlink.cfg -c "transport select hla_swd" -f target/stm32f1x.cfg -c "program {${BUILD_DIR}/${PROGNAME}.elf} verify reset; shutdown;" 42 | 43 | [env:Generic_GD32F130_remove_protections] 44 | platform = ststm32 45 | board = gd32f130g6 46 | src_filter = -<*> 47 | upload_protocol = custom 48 | upload_command = 49 | openocd -d2 -f interface/stlink.cfg -c "transport select hla_swd" -f target/stm32f1x.cfg -c "init; reset halt; stm32f1x unlock 0; reset halt; exit;" 50 | openocd -d2 -f interface/stlink.cfg -c "transport select hla_swd" -f target/stm32f1x.cfg -c "init; reset halt; wait_halt; stm32f1x mass_erase 0; sleep 200; reset halt; exit;" 51 | 52 | [env:Generic_GD32F130_bootloader_only] 53 | extends = env_gd32f130 54 | 55 | # ----------------------------- 56 | -------------------------------------------------------------------------------- /release/Generic_GD32F130_bootloader.bin: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/OpenVTx/OpenVTx_bootloader/10161c4c70f69dfe4301de68b2f0b1413b913489/release/Generic_GD32F130_bootloader.bin -------------------------------------------------------------------------------- /src/gd32f1x0/flash.c: -------------------------------------------------------------------------------- 1 | #include "flash.h" 2 | #include "main.h" 3 | #include "serial.h" 4 | #include "helpers.h" 5 | #include 6 | 7 | /* Function pointer for jumping to user application. */ 8 | typedef void (*fnc_ptr)(void); 9 | 10 | 11 | int flash_erase_page(uint32_t address) 12 | { 13 | return flash_storage_erase(address, PAGE_SIZE); 14 | } 15 | 16 | int flash_storage_erase(uint32_t address, uint32_t size) 17 | { 18 | if (address < ((uint32_t)&__APP_START) || FLASH_END <= address) 19 | return -1; 20 | 21 | /* Use size as a end address */ 22 | size = address + size; 23 | 24 | /* unlock the flash program/erase controller */ 25 | fmc_unlock(); 26 | 27 | /* clear all pending flags */ 28 | fmc_flag_clear(FMC_FLAG_END | FMC_FLAG_WPERR | FMC_FLAG_PGERR); 29 | 30 | /* erase the flash pages */ 31 | for (; address < size; address += PAGE_SIZE) { 32 | if (fmc_page_erase(address) != FMC_READY) { 33 | break; 34 | } 35 | fmc_flag_clear(FMC_FLAG_END | FMC_FLAG_WPERR | FMC_FLAG_PGERR); 36 | fwdgt_counter_reload(); 37 | } 38 | 39 | /* lock the main FMC after the erase operation */ 40 | fmc_lock(); 41 | 42 | return (address >= size) ? 0 : -1; 43 | } 44 | 45 | 46 | int flash_storage_write(uint32_t address, uint32_t const * data, uint32_t size) 47 | { 48 | if (address < ((uint32_t)&__APP_START) || FLASH_END <= address) 49 | return -1; 50 | if (!data || !size || APP_SIZE < (size * 4U)) 51 | return -1; 52 | 53 | /* unlock the flash program/erase controller */ 54 | fmc_unlock(); 55 | 56 | /* program flash */ 57 | while (size-- && address < FLASH_END) { 58 | if (fmc_word_program(address, *data++) != FMC_READY) { 59 | goto flash_write_fail; 60 | } 61 | address += 4U; 62 | fmc_flag_clear(FMC_FLAG_END | FMC_FLAG_WPERR | FMC_FLAG_PGERR); 63 | fwdgt_counter_reload(); 64 | } 65 | 66 | /* lock the main FMC after the program operation */ 67 | fmc_lock(); 68 | 69 | return 0; 70 | 71 | flash_write_fail: 72 | return -1; 73 | } 74 | 75 | 76 | int8_t flash_check_app_loaded(void) 77 | { 78 | /* Check if app is already loaded */ 79 | __IO uint32_t const * vectors = (__IO uint32_t *)(APP_START_ADDR); 80 | extern uint32_t _vectors_start; 81 | extern uint32_t _vectors_end; 82 | uint32_t address; 83 | uint32_t count = ((uint32_t)&_vectors_end - (uint32_t)&_vectors_start); 84 | count /= sizeof(uint32_t); 85 | count--; 86 | 87 | /* Validate stack address first */ 88 | if ((uint16_t)(*vectors++ >> 20) != 0x200) 89 | goto exit_fail; 90 | 91 | /* Validate vector table */ 92 | while (count--) { 93 | address = *vectors++; 94 | address >>= 16; 95 | if ((address != 0x800) && (address != 0)) 96 | goto exit_fail; 97 | } 98 | 99 | return 0; 100 | 101 | exit_fail: 102 | return -1; 103 | } 104 | 105 | 106 | /** 107 | * @brief Actually jumps to the user application. 108 | * @param void 109 | * @return void 110 | */ 111 | void flash_jump_to_app(void) 112 | { 113 | fwdgt_counter_reload(); 114 | status_led3(1); 115 | 116 | if (flash_check_app_loaded() < 0) { 117 | /* Restart if no valid app found */ 118 | NVIC_SystemReset(); 119 | } 120 | 121 | /* Small delay to allow UART TX send out everything */ 122 | delay(100); 123 | 124 | /* Function pointer to the address of the user application. */ 125 | fnc_ptr jump_to_app; 126 | jump_to_app = (fnc_ptr)(*(volatile uint32_t *)(APP_START_ADDR + 4u)); 127 | /* Remove configs before jump. */ 128 | serial_end(); 129 | //HAL_DeInit(); 130 | 131 | __disable_irq(); 132 | 133 | /* Change the main stack pointer. */ 134 | asm volatile("msr msp, %0" ::"g"(*(volatile uint32_t *)APP_START_ADDR)); 135 | SCB->VTOR = (__IO uint32_t)(APP_START_ADDR); 136 | (void)SCB->VTOR; 137 | 138 | jump_to_app(); 139 | 140 | while(1) 141 | ; 142 | } 143 | -------------------------------------------------------------------------------- /src/gd32f1x0/flash.h: -------------------------------------------------------------------------------- 1 | #pragma once 2 | 3 | #include 4 | #include 5 | 6 | #define APP_START_ADDR (((uint32_t)&__APP_START)) 7 | #define APP_SIZE (uint32_t)((uint8_t*)&__APP_END - (uint8_t*)&__APP_START) 8 | 9 | #define FLASH_END ((uint32_t)&__APP_END) 10 | #define PAGE_SIZE ((uint32_t)&__FLASH_PAGE_SIZE) 11 | 12 | extern __IO uint32_t __APP_START; 13 | extern __IO uint32_t __APP_END; 14 | extern __IO uint32_t __FLASH_PAGE_SIZE; 15 | 16 | 17 | int flash_erase_page(uint32_t address); 18 | 19 | int flash_storage_erase(uint32_t address, uint32_t size); 20 | int flash_storage_write(uint32_t address, uint32_t const * data, uint32_t size); 21 | 22 | 23 | int8_t flash_check_app_loaded(void); 24 | void flash_jump_to_app(void); 25 | -------------------------------------------------------------------------------- /src/gd32f1x0/gd32f1x0.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include "helpers.h" 3 | 4 | static volatile uint32_t _ms_cntr; 5 | 6 | void SysTick_Handler(void) 7 | { 8 | ++_ms_cntr; 9 | } 10 | 11 | void systick_config(void) { 12 | /* setup systick timer for 1ms interrupts */ 13 | if (SysTick_Config(SystemCoreClock / 1000)) { 14 | /* capture error */ 15 | while (1) 16 | ; 17 | } 18 | /* configure the systick handler priority */ 19 | NVIC_SetPriority(SysTick_IRQn, 0x00); 20 | } 21 | 22 | uint32_t millis(void) 23 | { 24 | return _ms_cntr; 25 | } 26 | 27 | void delay(uint32_t const ms) 28 | { 29 | uint32_t const start = millis(); 30 | while((millis() - start) < ms); 31 | } 32 | 33 | void delayMicroseconds(uint32_t us) 34 | { 35 | __IO uint32_t currentTicks = SysTick->VAL; 36 | /* Number of ticks per millisecond */ 37 | const uint32_t tickPerMs = SysTick->LOAD + 1; 38 | /* Number of ticks to count */ 39 | const uint32_t nbTicks = ((us - ((us > 0) ? 1 : 0)) * tickPerMs) / 1000; 40 | /* Number of elapsed ticks */ 41 | uint32_t elapsedTicks = 0; 42 | __IO uint32_t oldTicks = currentTicks; 43 | do { 44 | currentTicks = SysTick->VAL; 45 | elapsedTicks += (oldTicks < currentTicks) 46 | ? tickPerMs + oldTicks - currentTicks 47 | : oldTicks - currentTicks; 48 | oldTicks = currentTicks; 49 | } while (nbTicks > elapsedTicks); 50 | } 51 | 52 | 53 | int main(void) 54 | { 55 | SystemCoreClockUpdate(); 56 | systick_config(); 57 | 58 | extern void setup(void); 59 | extern void loop(void); 60 | setup(); 61 | while(1) loop(); 62 | 63 | return 0; 64 | } 65 | -------------------------------------------------------------------------------- /src/gd32f1x0/gd32f1x0_libopt.h: -------------------------------------------------------------------------------- 1 | /* 2 | Copyright (C) 2017 GigaDevice 3 | 4 | 2014-12-26, V1.0.0, platform GD32F1x0(x=3,5) 5 | 2016-01-15, V2.0.0, platform GD32F1x0(x=3,5,7,9) 6 | 2016-04-30, V3.0.0, firmware update for GD32F1x0(x=3,5,7,9) 7 | 2017-06-19, V3.1.0, firmware update for GD32F1x0(x=3,5,7,9) 8 | */ 9 | 10 | #ifndef GD32F1X0_LIBOPT_H 11 | #define GD32F1X0_LIBOPT_H 12 | 13 | #include "gd32f1x0_adc.h" 14 | #include "gd32f1x0_cec.h" 15 | #include "gd32f1x0_crc.h" 16 | #include "gd32f1x0_cmp.h" 17 | #include "gd32f1x0_dac.h" 18 | #include "gd32f1x0_dbg.h" 19 | #include "gd32f1x0_dma.h" 20 | #include "gd32f1x0_exti.h" 21 | #include "gd32f1x0_fmc.h" 22 | #include "gd32f1x0_gpio.h" 23 | #include "gd32f1x0_syscfg.h" 24 | #include "gd32f1x0_i2c.h" 25 | #include "gd32f1x0_fwdgt.h" 26 | #include "gd32f1x0_pmu.h" 27 | #include "gd32f1x0_rcu.h" 28 | #include "gd32f1x0_rtc.h" 29 | #include "gd32f1x0_spi.h" 30 | #include "gd32f1x0_timer.h" 31 | #include "gd32f1x0_usart.h" 32 | #include "gd32f1x0_wwdgt.h" 33 | #include "gd32f1x0_misc.h" 34 | #include "gd32f1x0_tsi.h" 35 | #ifdef GD32F170_190 36 | #include "gd32f1x0_slcd.h" 37 | #include "gd32f1x0_opa.h" 38 | #include "gd32f1x0_ivref.h" 39 | #include "gd32f1x0_can.h" 40 | #endif /* GD32F170_190 */ 41 | 42 | #endif /* GD32F1X0_LIBOPT_H */ 43 | -------------------------------------------------------------------------------- /src/gd32f1x0/gpio.c: -------------------------------------------------------------------------------- 1 | #include "gpio.h" 2 | #include "gd32f1x0_gpio.h" 3 | #include "gd32f1x0_rcu.h" 4 | 5 | 6 | gpio_out_t gpio_out_setup(uint32_t pin, uint32_t val) 7 | { 8 | uint32_t gpio_periph = GPIO_BASE + 0x400 * GPIO2PORT(pin); 9 | uint32_t gpio_pin = GPIO2BIT(pin); 10 | /* enable the clock */ 11 | rcu_periph_clock_enable(RCU_REGIDX_BIT(IDX_AHBEN, (17U + GPIO2PORT(pin)))); 12 | 13 | gpio_mode_set(gpio_periph, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, gpio_pin); 14 | gpio_output_options_set(gpio_periph, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, 15 | gpio_pin); 16 | gpio_out_t g = (gpio_out_t){.regs = gpio_periph, .bit = gpio_pin}; 17 | gpio_out_write(g, val); 18 | return g; 19 | } 20 | 21 | void gpio_out_toggle(gpio_out_t g) 22 | { 23 | GPIO_TG(g.regs) = g.bit; 24 | } 25 | 26 | void gpio_out_write(gpio_out_t g, uint32_t val) 27 | { 28 | if (val) 29 | GPIO_BOP(g.regs) = g.bit; 30 | else 31 | GPIO_BC(g.regs) = g.bit; 32 | } 33 | 34 | uint8_t gpio_out_read(gpio_out_t g) 35 | { 36 | return !!(GPIO_OCTL(g.regs) & (g.bit)); 37 | } 38 | 39 | 40 | gpio_in_t gpio_in_setup(uint32_t pin, int32_t pull_up) 41 | { 42 | uint32_t gpio_periph = GPIO_BASE + 0x400 * GPIO2PORT(pin); 43 | uint32_t gpio_pin = GPIO2BIT(pin); 44 | uint32_t pud_val = GPIO_PUPD_NONE; 45 | if (pull_up < 0) 46 | pud_val = GPIO_PUPD_PULLDOWN; 47 | else if (0 < pull_up) 48 | pud_val = GPIO_PUPD_PULLUP; 49 | /* enable the clock */ 50 | rcu_periph_clock_enable(RCU_REGIDX_BIT(IDX_AHBEN, (17U + GPIO2PORT(pin)))); 51 | gpio_mode_set(gpio_periph, GPIO_MODE_INPUT, pud_val, gpio_pin); 52 | return (gpio_in_t){.regs = gpio_periph, .bit = gpio_pin}; 53 | } 54 | 55 | uint8_t gpio_in_read(gpio_in_t g) 56 | { 57 | return !!(GPIO_ISTAT(g.regs) & (g.bit)); 58 | } 59 | 60 | 61 | void pinAlternateConfig(uint32_t pin, uint8_t af, int8_t pud) 62 | { 63 | uint32_t gpio_periph = GPIO_BASE + 0x400 * GPIO2PORT(pin); 64 | uint32_t gpio_pin = GPIO2BIT(pin); 65 | uint32_t pud_val = GPIO_PUPD_NONE; 66 | if (pud < 0) 67 | pud_val = GPIO_PUPD_PULLDOWN; 68 | else if (0 < pud) 69 | pud_val = GPIO_PUPD_PULLUP; 70 | 71 | if (!pin || 12 <= af) 72 | return; 73 | 74 | /* enable the clock */ 75 | rcu_periph_clock_enable(RCU_REGIDX_BIT(IDX_AHBEN, (17U + GPIO2PORT(pin)))); 76 | 77 | /* configure gpio pin */ 78 | gpio_af_set(gpio_periph, AF(af), gpio_pin); 79 | gpio_mode_set(gpio_periph, GPIO_MODE_AF, pud_val, gpio_pin); 80 | gpio_output_options_set(gpio_periph, GPIO_OTYPE_PP, 81 | GPIO_OSPEED_50MHZ, gpio_pin); 82 | } 83 | -------------------------------------------------------------------------------- /src/gd32f1x0/gpio.h: -------------------------------------------------------------------------------- 1 | #ifndef __GPIO_H_ 2 | #define __GPIO_H_ 3 | 4 | #include "pins.h" 5 | #include 6 | #include 7 | 8 | #define GPIO_NUM_PINS 16 9 | #define GPIO(PORT, NUM) (((PORT) - 'A') * GPIO_NUM_PINS + (NUM)) 10 | #define GPIO2PORT(PIN) ((PIN) / GPIO_NUM_PINS) 11 | #define GPIO2BIT(PIN) (1U << GPIO2IDX(PIN)) 12 | #define GPIO2IDX(PIN) ((PIN) % GPIO_NUM_PINS) 13 | 14 | void pinAlternateConfig(uint32_t pin, uint8_t af, int8_t pud); 15 | 16 | typedef struct 17 | { 18 | uint32_t regs; 19 | uint32_t bit; 20 | } gpio_out_t; 21 | gpio_out_t gpio_out_setup(uint32_t pin, uint32_t val); 22 | void gpio_out_toggle(gpio_out_t g); 23 | void gpio_out_write(gpio_out_t g, uint32_t val); 24 | uint8_t gpio_out_read(gpio_out_t g); 25 | static inline uint8_t gpio_out_valid(gpio_out_t g) { 26 | return (!!g.regs); 27 | } 28 | 29 | typedef struct 30 | { 31 | uint32_t regs; 32 | uint32_t bit; 33 | } gpio_in_t; 34 | gpio_in_t gpio_in_setup(uint32_t pin, int32_t pull_up); 35 | uint8_t gpio_in_read(gpio_in_t g); 36 | static inline uint8_t gpio_in_valid(gpio_in_t g) { 37 | return (!!g.regs); 38 | } 39 | 40 | #endif /* __GPIO_H_ */ 41 | -------------------------------------------------------------------------------- /src/gd32f1x0/it.c: -------------------------------------------------------------------------------- 1 | /* 2 | Copyright (C) 2017 GigaDevice 3 | 4 | 2014-12-26, V1.0.0, platform GD32F1x0(x=3,5) 5 | 2016-01-15, V2.0.0, platform GD32F1x0(x=3,5,7,9) 6 | 2016-04-30, V3.0.0, firmware update for GD32F1x0(x=3,5,7,9) 7 | 2017-06-19, V3.1.0, firmware update for GD32F1x0(x=3,5,7,9) 8 | */ 9 | 10 | #include "it.h" 11 | 12 | /*! 13 | \brief this function handles NMI exception 14 | \param[in] none 15 | \param[out] none 16 | \retval none 17 | */ 18 | void NMI_Handler(void) {} 19 | 20 | /*! 21 | \brief this function handles HardFault exception 22 | \param[in] none 23 | \param[out] none 24 | \retval none 25 | */ 26 | void HardFault_Handler(void) { 27 | /* if Hard Fault exception occurs, go to infinite loop */ 28 | while (1) 29 | ; 30 | } 31 | 32 | /*! 33 | \brief this function handles MemManage exception 34 | \param[in] none 35 | \param[out] none 36 | \retval none 37 | */ 38 | void MemManage_Handler(void) { 39 | /* if Memory Manage exception occurs, go to infinite loop */ 40 | while (1) 41 | ; 42 | } 43 | 44 | /*! 45 | \brief this function handles BusFault exception 46 | \param[in] none 47 | \param[out] none 48 | \retval none 49 | */ 50 | void BusFault_Handler(void) { 51 | /* if Bus Fault exception occurs, go to infinite loop */ 52 | while (1) 53 | ; 54 | } 55 | 56 | /*! 57 | \brief this function handles UsageFault exception 58 | \param[in] none 59 | \param[out] none 60 | \retval none 61 | */ 62 | void UsageFault_Handler(void) { 63 | /* if Usage Fault exception occurs, go to infinite loop */ 64 | while (1) 65 | ; 66 | } 67 | 68 | /*! 69 | \brief this function handles SVC exception 70 | \param[in] none 71 | \param[out] none 72 | \retval none 73 | */ 74 | void SVC_Handler(void) {} 75 | 76 | /*! 77 | \brief this function handles DebugMon exception 78 | \param[in] none 79 | \param[out] none 80 | \retval none 81 | */ 82 | void DebugMon_Handler(void) {} 83 | 84 | /*! 85 | \brief this function handles PendSV exception 86 | \param[in] none 87 | \param[out] none 88 | \retval none 89 | */ 90 | void PendSV_Handler(void) {} 91 | 92 | -------------------------------------------------------------------------------- /src/gd32f1x0/it.h: -------------------------------------------------------------------------------- 1 | /* 2 | Copyright (C) 2017 GigaDevice 3 | 4 | 2014-12-26, V1.0.0, platform GD32F1x0(x=3,5) 5 | 2016-01-15, V2.0.0, platform GD32F1x0(x=3,5,7,9) 6 | 2016-04-30, V3.0.0, firmware update for GD32F1x0(x=3,5,7,9) 7 | 2017-06-19, V3.1.0, firmware update for GD32F1x0(x=3,5,7,9) 8 | */ 9 | 10 | #ifndef GD32F1X0_IT_H 11 | #define GD32F1X0_IT_H 12 | 13 | #include 14 | 15 | /* function declarations */ 16 | /* NMI handle function */ 17 | void NMI_Handler(void); 18 | /* HardFault handle function */ 19 | void HardFault_Handler(void); 20 | /* MemManage handle function */ 21 | void MemManage_Handler(void); 22 | /* BusFault handle function */ 23 | void BusFault_Handler(void); 24 | /* UsageFault handle function */ 25 | void UsageFault_Handler(void); 26 | /* SVC handle function */ 27 | void SVC_Handler(void); 28 | /* DebugMon handle function */ 29 | void DebugMon_Handler(void); 30 | /* PendSV handle function */ 31 | void PendSV_Handler(void); 32 | /* SysTick handle function */ 33 | void SysTick_Handler(void); 34 | 35 | #endif /* GD32F1X0_IT_H */ 36 | -------------------------------------------------------------------------------- /src/gd32f1x0/linker.ld: -------------------------------------------------------------------------------- 1 | 2 | /* Page is 1k */ 3 | __FLASH_PAGE_SIZE = 0x400; 4 | /* BL RAM data size */ 5 | __BL_DATA_SIZE = 0x80; 6 | 7 | /* Entry Point */ 8 | ENTRY(Reset_Handler) 9 | 10 | /* Highest address of the user mode stack */ 11 | _estack = 0x20001000 - __BL_DATA_SIZE; /* end of RAM */ 12 | /* Reserve some RAM to exchange data for bootloader */ 13 | _bootloader_data = _estack + 0x4; 14 | /* Generate a link error if heap and stack don't fit into RAM */ 15 | _Min_Heap_Size = 0x200; /* required amount of heap */ 16 | _Min_Stack_Size = 0x400; /* required amount of stack */ 17 | 18 | /* Specify the memory areas */ 19 | MEMORY 20 | { 21 | RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 4K 22 | FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 8K 23 | APP (rx) : ORIGIN = 0x08000000 + LENGTH(FLASH), LENGTH = 32K - LENGTH(FLASH) 24 | } 25 | 26 | /* Define output sections */ 27 | SECTIONS 28 | { 29 | /* The startup code goes first into FLASH */ 30 | .isr_vector : 31 | { 32 | . = ALIGN(4); 33 | _vectors_start = .; 34 | KEEP(*(.isr_vector)) /* Startup code */ 35 | _vectors_end = .; 36 | . = ALIGN(4); 37 | } >FLASH 38 | 39 | /* The program code and other data goes into FLASH */ 40 | .text : 41 | { 42 | . = ALIGN(4); 43 | *(.text) /* .text sections (code) */ 44 | *(.text*) /* .text* sections (code) */ 45 | *(.glue_7) /* glue arm to thumb code */ 46 | *(.glue_7t) /* glue thumb to arm code */ 47 | *(.eh_frame) 48 | 49 | KEEP (*(.init)) 50 | KEEP (*(.fini)) 51 | 52 | . = ALIGN(4); 53 | _etext = .; /* define a global symbols at end of code */ 54 | } >FLASH 55 | 56 | /* Constant data goes into FLASH */ 57 | .rodata : 58 | { 59 | . = ALIGN(4); 60 | *(.rodata) /* .rodata sections (constants, strings, etc.) */ 61 | *(.rodata*) /* .rodata* sections (constants, strings, etc.) */ 62 | . = ALIGN(4); 63 | } >FLASH 64 | 65 | .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH 66 | .ARM : { 67 | __exidx_start = .; 68 | *(.ARM.exidx*) 69 | __exidx_end = .; 70 | } >FLASH 71 | 72 | .preinit_array : 73 | { 74 | PROVIDE_HIDDEN (__preinit_array_start = .); 75 | KEEP (*(.preinit_array*)) 76 | PROVIDE_HIDDEN (__preinit_array_end = .); 77 | } >FLASH 78 | 79 | .init_array : 80 | { 81 | PROVIDE_HIDDEN (__init_array_start = .); 82 | KEEP (*(SORT(.init_array.*))) 83 | KEEP (*(.init_array*)) 84 | PROVIDE_HIDDEN (__init_array_end = .); 85 | } >FLASH 86 | 87 | .fini_array : 88 | { 89 | PROVIDE_HIDDEN (__fini_array_start = .); 90 | KEEP (*(SORT(.fini_array.*))) 91 | KEEP (*(.fini_array*)) 92 | PROVIDE_HIDDEN (__fini_array_end = .); 93 | } >FLASH 94 | 95 | /* used by the startup to initialize data */ 96 | _sidata = LOADADDR(.data); 97 | 98 | /* Initialized data sections goes into RAM, load LMA copy after code */ 99 | .data : 100 | { 101 | . = ALIGN(4); 102 | _sdata = .; /* create a global symbol at data start */ 103 | *(.data) /* .data sections */ 104 | *(.data*) /* .data* sections */ 105 | 106 | . = ALIGN(4); 107 | _edata = .; /* define a global symbol at data end */ 108 | } >RAM AT> FLASH 109 | 110 | /* Uninitialized data section */ 111 | . = ALIGN(4); 112 | .bss : 113 | { 114 | /* This is used by the startup in order to initialize the .bss secion */ 115 | _sbss = .; /* define a global symbol at bss start */ 116 | __bss_start__ = _sbss; 117 | *(.bss) 118 | *(.bss*) 119 | *(COMMON) 120 | 121 | . = ALIGN(4); 122 | _ebss = .; /* define a global symbol at bss end */ 123 | __bss_end__ = _ebss; 124 | } >RAM 125 | 126 | /* User_heap_stack section, used to check that there is enough RAM left */ 127 | ._user_heap_stack : 128 | { 129 | . = ALIGN(4); 130 | PROVIDE ( end = . ); 131 | PROVIDE ( _end = . ); 132 | . = . + _Min_Heap_Size; 133 | . = . + _Min_Stack_Size; 134 | . = . + __BL_DATA_SIZE; 135 | . = ALIGN(4); 136 | } >RAM 137 | 138 | /* Remove information from the standard libraries */ 139 | /DISCARD/ : 140 | { 141 | libc.a ( * ) 142 | libm.a ( * ) 143 | libgcc.a ( * ) 144 | } 145 | 146 | .ARM.attributes 0 : { *(.ARM.attributes) } 147 | 148 | 149 | /* Application flash area */ 150 | . = ALIGN(512); 151 | .application (NOLOAD): 152 | { 153 | __APP_START = .; 154 | . = . + LENGTH(APP); 155 | __APP_END = .; 156 | } > APP 157 | } 158 | -------------------------------------------------------------------------------- /src/gd32f1x0/pins.h: -------------------------------------------------------------------------------- 1 | #ifndef __PINS_H_ 2 | #define __PINS_H_ 3 | 4 | #define PA0 GPIO('A', 0) 5 | #define PA1 GPIO('A', 1) 6 | #define PA2 GPIO('A', 2) 7 | #define PA3 GPIO('A', 3) 8 | #define PA4 GPIO('A', 4) 9 | #define PA5 GPIO('A', 5) 10 | #define PA6 GPIO('A', 6) 11 | #define PA7 GPIO('A', 7) 12 | #define PA8 GPIO('A', 8) 13 | #define PA9 GPIO('A', 9) 14 | #define PA10 GPIO('A', 10) 15 | #define PA11 GPIO('A', 11) 16 | #define PA12 GPIO('A', 12) 17 | #define PA13 GPIO('A', 13) 18 | #define PA14 GPIO('A', 14) 19 | #define PA15 GPIO('A', 15) 20 | #define PB0 GPIO('B', 0) 21 | #define PB1 GPIO('B', 1) 22 | #define PB2 GPIO('B', 2) 23 | #define PB3 GPIO('B', 3) 24 | #define PB4 GPIO('B', 4) 25 | #define PB5 GPIO('B', 5) 26 | #define PB6 GPIO('B', 6) 27 | #define PB7 GPIO('B', 7) 28 | #define PB8 GPIO('B', 8) 29 | #define PB9 GPIO('B', 9) 30 | #define PB10 GPIO('B', 10) 31 | #define PB11 GPIO('B', 11) 32 | #define PB12 GPIO('B', 12) 33 | #define PB13 GPIO('B', 13) 34 | #define PB14 GPIO('B', 14) 35 | #define PB15 GPIO('B', 15) 36 | #define PC0 GPIO('C', 0) 37 | #define PC1 GPIO('C', 1) 38 | #define PC2 GPIO('C', 2) 39 | #define PC3 GPIO('C', 3) 40 | #define PC4 GPIO('C', 4) 41 | #define PC5 GPIO('C', 5) 42 | #define PC6 GPIO('C', 6) 43 | #define PC7 GPIO('C', 7) 44 | #define PC8 GPIO('C', 8) 45 | #define PC9 GPIO('C', 9) 46 | #define PC10 GPIO('C', 10) 47 | #define PC11 GPIO('C', 11) 48 | #define PC12 GPIO('C', 12) 49 | #define PC13 GPIO('C', 13) 50 | #define PC14 GPIO('C', 14) 51 | #define PC15 GPIO('C', 15) 52 | #define PD0 GPIO('D', 0) 53 | #define PD1 GPIO('D', 1) 54 | #define PD2 GPIO('D', 2) 55 | #define PD3 GPIO('D', 3) 56 | #define PD4 GPIO('D', 4) 57 | #define PD5 GPIO('D', 5) 58 | #define PD6 GPIO('D', 6) 59 | #define PD7 GPIO('D', 7) 60 | #define PD8 GPIO('D', 8) 61 | #define PD9 GPIO('D', 9) 62 | #define PD10 GPIO('D', 10) 63 | #define PD11 GPIO('D', 11) 64 | #define PD12 GPIO('D', 12) 65 | #define PD13 GPIO('D', 13) 66 | #define PD14 GPIO('D', 14) 67 | #define PD15 GPIO('D', 15) 68 | #define PF0 GPIO('F', 0) 69 | #define PF1 GPIO('F', 1) 70 | #define PF2 GPIO('F', 2) 71 | #define PF3 GPIO('F', 3) 72 | #define PF4 GPIO('F', 4) 73 | #define PF5 GPIO('F', 5) 74 | #define PF6 GPIO('F', 6) 75 | #define PF7 GPIO('F', 7) 76 | #define PF8 GPIO('F', 8) 77 | #define PF9 GPIO('F', 9) 78 | #define PF10 GPIO('F', 10) 79 | #define PF11 GPIO('F', 11) 80 | #define PF12 GPIO('F', 12) 81 | #define PF13 GPIO('F', 13) 82 | #define PF14 GPIO('F', 14) 83 | #define PF15 GPIO('F', 15) 84 | 85 | #endif /* __PINS_H_ */ 86 | -------------------------------------------------------------------------------- /src/gd32f1x0/serial.c: -------------------------------------------------------------------------------- 1 | #include "serial.h" 2 | #include "gpio.h" 3 | #include "helpers.h" 4 | #include 5 | #include 6 | #include 7 | 8 | struct usartx { 9 | uint32_t usart; 10 | uint32_t pin_rx, pin_tx, af; 11 | }; 12 | struct usartx usart_config[] = { 13 | {USART0, PA10, PA9, 1}, 14 | {USART0, PA3, PA2, 1}, 15 | {USART0, PA15, PA14, 1}, 16 | {USART0, PB7, PB6, 0}, 17 | //{USART1, PA3, PA2, 1}, // same as USART0 18 | {USART1, PB0, PA8, 4}, 19 | //{USART1, PA15, PA14, 1}, // same as USART0 20 | }; 21 | 22 | static uint32_t usart_periph_selected, usart_periph_halfduplex; 23 | 24 | static volatile uint8_t rx_buffer[64]; 25 | static volatile uint8_t rx_head, rx_tail; 26 | 27 | static void USARTx_IRQHandler(uint32_t usart_periph) 28 | { 29 | if ((USART_CTL0(usart_periph) & USART_RECEIVE_ENABLE) && 30 | (RESET != usart_interrupt_flag_get(usart_periph, USART_INT_FLAG_RBNE))) { 31 | /* receive data */ 32 | uint8_t next = rx_head; 33 | uint8_t data = usart_data_receive(usart_periph); 34 | if (((next + 1) % sizeof(rx_buffer)) != rx_tail) { 35 | rx_buffer[next] = data; 36 | rx_head = (next + 1) % sizeof(rx_buffer); 37 | } 38 | } 39 | usart_flag_clear(usart_periph, USART_FLAG_FERR); 40 | usart_flag_clear(usart_periph, USART_FLAG_ORERR); 41 | usart_flag_clear(usart_periph, USART_FLAG_PERR); 42 | } 43 | 44 | void USART0_IRQHandler(void) 45 | { 46 | USARTx_IRQHandler(USART0); 47 | } 48 | 49 | void USART1_IRQHandler(void) 50 | { 51 | USARTx_IRQHandler(USART1); 52 | } 53 | 54 | static void config_uart(struct usartx * usart_cfg, uint32_t baud, uint8_t halfduplex, uint8_t stopbits) 55 | { 56 | uint32_t usart_periph = usart_cfg->usart; 57 | 58 | if (!halfduplex) 59 | pinAlternateConfig(usart_cfg->pin_rx, usart_cfg->af, 1); 60 | pinAlternateConfig(usart_cfg->pin_tx, usart_cfg->af, 1); 61 | 62 | usart_periph_selected = usart_periph; 63 | usart_periph_halfduplex = halfduplex; 64 | 65 | /* enable USART clock */ 66 | rcu_periph_clock_enable((usart_periph == USART1) ? RCU_USART1 : RCU_USART0); 67 | 68 | /* USART configure */ 69 | usart_deinit(usart_periph); 70 | //usart_oversample_config(usart_periph, USART_OVSMOD_16); 71 | /* 8N1 (standard) */ 72 | usart_baudrate_set(usart_periph, baud); 73 | usart_parity_config(usart_periph, USART_PM_NONE); 74 | usart_word_length_set(usart_periph, USART_WL_8BIT); 75 | if (stopbits == 2) 76 | usart_stop_bit_set(usart_periph, USART_STB_2BIT); 77 | else 78 | usart_stop_bit_set(usart_periph, USART_STB_1BIT); 79 | if (halfduplex) { 80 | usart_halfduplex_enable(usart_periph); 81 | usart_transmit_config(usart_periph, USART_TRANSMIT_DISABLE); 82 | } else { 83 | usart_halfduplex_disable(usart_periph); 84 | usart_transmit_config(usart_periph, USART_TRANSMIT_ENABLE); 85 | } 86 | usart_receive_config(usart_periph, USART_RECEIVE_ENABLE); 87 | usart_interrupt_enable(usart_periph, USART_INT_RBNE); 88 | usart_enable(usart_periph); 89 | nvic_irq_enable((usart_periph == USART1) ? USART1_IRQn : USART0_IRQn, 0, 0); 90 | } 91 | 92 | void serial_begin(uint32_t baud, uint32_t tx_pin, uint32_t rx_pin, uint8_t stopbits) 93 | { 94 | uint8_t iter, halfduplex = (tx_pin == rx_pin); 95 | 96 | for (iter = 0; iter < ARRAY_SIZE(usart_config); iter++) { 97 | if ((usart_config[iter].pin_tx == tx_pin) && 98 | (halfduplex || (usart_config[iter].pin_rx == rx_pin))) { 99 | config_uart(&usart_config[iter], baud, halfduplex, stopbits); 100 | break; 101 | } 102 | } 103 | } 104 | 105 | void serial_end(void) 106 | { 107 | usart_disable(usart_periph_selected); 108 | usart_deinit(usart_periph_selected); 109 | } 110 | 111 | uint8_t serial_available(void) 112 | { 113 | return (uint32_t)(sizeof(rx_buffer) + rx_head - rx_tail) % sizeof(rx_buffer); 114 | } 115 | 116 | uint8_t serial_read(void) 117 | { 118 | uint8_t data = rx_buffer[rx_tail++]; 119 | rx_tail %= sizeof(rx_buffer); 120 | return data; 121 | } 122 | 123 | static int check_timeout(uint32_t timeout) 124 | { 125 | uint32_t const start = millis(); 126 | while (((millis() - start) < timeout)) { 127 | fwdgt_counter_reload(); 128 | if (serial_available()) 129 | return 0; 130 | } 131 | return -1; 132 | } 133 | 134 | uint8_t serial_read_timeout(uint8_t *data, uint16_t length, uint16_t timeout) 135 | { 136 | while (check_timeout(timeout) >= 0 && length) { 137 | *data++ = serial_read(); 138 | --length; 139 | } 140 | return !length ? 0 : UART_ERROR; 141 | } 142 | 143 | void serial_write(uint8_t data) 144 | { 145 | uint32_t usart_periph = usart_periph_selected; 146 | uint8_t halfduplex = usart_periph_halfduplex; 147 | if (!usart_periph) 148 | return; 149 | if (halfduplex) { 150 | usart_transmit_config(usart_periph, USART_TRANSMIT_ENABLE); 151 | usart_receive_config(usart_periph, USART_RECEIVE_DISABLE); 152 | } 153 | 154 | usart_data_transmit(usart_periph, data); 155 | /* wait until end of transmit */ 156 | while (RESET == usart_flag_get(usart_periph, USART_FLAG_TC)) 157 | ; 158 | 159 | if (halfduplex) { 160 | usart_transmit_config(usart_periph, USART_TRANSMIT_DISABLE); 161 | usart_receive_config(usart_periph, USART_RECEIVE_ENABLE); 162 | } 163 | } 164 | 165 | void Serial_write_len(uint8_t *data, uint32_t size) 166 | { 167 | uint32_t usart_periph = usart_periph_selected; 168 | uint8_t halfduplex = usart_periph_halfduplex; 169 | if (!usart_periph) 170 | return; 171 | if (halfduplex) { 172 | usart_transmit_config(usart_periph, USART_TRANSMIT_ENABLE); 173 | usart_receive_config(usart_periph, USART_RECEIVE_DISABLE); 174 | } 175 | 176 | while (size--) { 177 | usart_data_transmit(usart_periph, *data++); 178 | while (RESET == usart_flag_get(usart_periph, USART_FLAG_TBE)) 179 | ; 180 | } 181 | /* wait until end of transmit */ 182 | while (RESET == usart_flag_get(usart_periph, USART_FLAG_TC)) 183 | ; 184 | 185 | if (halfduplex) { 186 | usart_transmit_config(usart_periph, USART_TRANSMIT_DISABLE); 187 | usart_receive_config(usart_periph, USART_RECEIVE_ENABLE); 188 | } 189 | } 190 | 191 | void serial_flush(void) 192 | { 193 | // not needed... 194 | } 195 | -------------------------------------------------------------------------------- /src/gd32f1x0/serial.h: -------------------------------------------------------------------------------- 1 | #ifndef __SERIAL_H_ 2 | #define __SERIAL_H_ 3 | 4 | #include 5 | 6 | #define UART_ERROR ((uint8_t)-1) 7 | 8 | 9 | void serial_begin(uint32_t baud, uint32_t tx_pin, uint32_t rx_pin, uint8_t stopbits); 10 | void serial_end(void); 11 | uint8_t serial_available(void); 12 | uint8_t serial_read(void); 13 | uint8_t serial_read_timeout(uint8_t *data, uint16_t length, uint16_t timeout); 14 | void serial_write(uint8_t data); 15 | void Serial_write_len(uint8_t *data, uint32_t size); 16 | void serial_flush(void); 17 | 18 | #endif /* __SERIAL_H_ */ 19 | -------------------------------------------------------------------------------- /src/helpers.h: -------------------------------------------------------------------------------- 1 | #pragma once 2 | 3 | #include 4 | 5 | #define WORD_ALIGNED_ATTR __attribute__((aligned(32))) 6 | 7 | #define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0])) 8 | 9 | #define bitSet(value, bit) ((value) |= (1UL << (bit))) 10 | #define bitClear(value, bit) ((value) &= ~(1UL << (bit))) 11 | #define bitWrite(value, bit, bitvalue) (bitvalue ? bitSet(value, bit) : bitClear(value, bit)) 12 | #define bitRead(value, bit) (((value) >> (bit)) & 0x01) 13 | 14 | extern uint32_t millis(void); 15 | extern void delay(uint32_t const ms); 16 | extern void delayMicroseconds(uint32_t us); 17 | -------------------------------------------------------------------------------- /src/main.c: -------------------------------------------------------------------------------- 1 | #include "serial.h" 2 | #include "gpio.h" 3 | #include "flash.h" 4 | #include "xmodem.h" 5 | #include "helpers.h" 6 | 7 | 8 | #define UART_RX PA9 9 | #define UART_TX PA9 10 | #define LED1 PA4 // Red 11 | #define LED2 PA3 // Green 12 | #define LED3 PA2 // Blue 13 | #define BUTTON PA6 14 | #define DEBOUNCE_TIME 50 15 | 16 | #ifndef BAUD_RATE 17 | #define BAUD_RATE 4801 // Default for SmartAudio 18 | #endif // BAUD_RATE 19 | 20 | 21 | static uint32_t boot_start_time; 22 | 23 | enum 24 | { 25 | BUTTON_PRESSED, 26 | BUTTON_RELEASED 27 | }; 28 | 29 | #ifdef LED1 30 | static gpio_out_t led1_pin; 31 | #endif 32 | #ifdef LED2 33 | static gpio_out_t led2_pin; 34 | #endif 35 | #ifdef LED3 36 | static gpio_out_t led3_pin; 37 | #endif 38 | #ifdef BUTTON 39 | static gpio_in_t buttonPin; 40 | #endif 41 | 42 | void status_leds_init(void) 43 | { 44 | #ifdef LED1 45 | led1_pin = gpio_out_setup(LED1, 0); 46 | #endif 47 | #ifdef LED2 48 | led2_pin = gpio_out_setup(LED2, 0); 49 | #endif 50 | #ifdef LED3 51 | led3_pin = gpio_out_setup(LED3, 0); 52 | #endif 53 | } 54 | 55 | void button_init(void) 56 | { 57 | #ifdef BUTTON 58 | buttonPin = gpio_in_setup(BUTTON, 0); 59 | #endif 60 | } 61 | 62 | void status_led1(uint8_t const state) 63 | { 64 | #ifdef LED1 65 | gpio_out_write(led1_pin, state); 66 | #else 67 | (void)state; 68 | #endif 69 | } 70 | 71 | void status_led2(uint8_t const state) 72 | { 73 | #ifdef LED2 74 | gpio_out_write(led2_pin, state); 75 | #else 76 | (void)state; 77 | #endif 78 | } 79 | 80 | void status_led3(uint8_t const state) 81 | { 82 | #ifdef LED3 83 | gpio_out_write(led3_pin, state); 84 | #else 85 | (void)state; 86 | #endif 87 | } 88 | 89 | 90 | #define BOOTLOADER_KEY 0x4f565458 // OVTX 91 | #define BOOTLOADER_TYPE 0xACDC 92 | 93 | struct bootloader { 94 | uint32_t key; 95 | uint32_t reset_type; 96 | uint32_t baud; 97 | }; 98 | 99 | static int check_bootloader_data(void) 100 | { 101 | /* Fill reset info into RAM for bootloader */ 102 | extern uint32_t _bootloader_data; 103 | struct bootloader * blinfo = (struct bootloader*)&_bootloader_data; 104 | if ((BOOTLOADER_KEY == blinfo->key) && (BOOTLOADER_TYPE == blinfo->reset_type)) { 105 | // Clear data 106 | blinfo->key = 0; 107 | blinfo->reset_type = 0; 108 | return blinfo->baud; // bootloader requested 109 | } 110 | if (flash_check_app_loaded() < 0) 111 | return BAUD_RATE; // No valid code => stay in bootloader 112 | return -1; // boot into main code 113 | } 114 | 115 | 116 | void setup(void) 117 | { 118 | fwdgt_config(0x0FFF, FWDGT_PSC_DIV4); 119 | fwdgt_window_value_config(0x0FFF); 120 | fwdgt_enable(); // Enable watchdog 121 | status_leds_init(); 122 | button_init(); 123 | 124 | /* Reset WD */ 125 | fwdgt_counter_reload(); 126 | 127 | int baudrate = check_bootloader_data(); 128 | 129 | #ifdef BUTTON 130 | if (gpio_in_read(buttonPin) == BUTTON_PRESSED) 131 | { 132 | delay(DEBOUNCE_TIME); 133 | if (gpio_in_read(buttonPin) == BUTTON_PRESSED) 134 | baudrate = BAUD_RATE; 135 | } 136 | #endif 137 | 138 | /* Check if the bootloader update was requested */ 139 | if (0 <= baudrate) { 140 | uint8_t stopbits = 1; 141 | if (baudrate % 2) 142 | { 143 | baudrate--; // Reset bit that was used to indicate 2 stopbits 144 | stopbits = 2; 145 | } 146 | serial_begin(baudrate, UART_TX, UART_RX, stopbits); 147 | 148 | boot_start_time = millis(); 149 | 150 | xmodem_receive(); 151 | } 152 | /* Jump into applicaiton code */ 153 | flash_jump_to_app(); 154 | } 155 | 156 | void loop(void) 157 | { 158 | } 159 | -------------------------------------------------------------------------------- /src/main.h: -------------------------------------------------------------------------------- 1 | #pragma once 2 | 3 | #include 4 | 5 | void status_led1(uint8_t state); 6 | void status_led2(uint8_t state); 7 | void status_led3(uint8_t state); 8 | -------------------------------------------------------------------------------- /src/xmodem.c: -------------------------------------------------------------------------------- 1 | /** 2 | * @file xmodem.c 3 | * @author Ferenc Nemeth 4 | * @date 21 Dec 2018 5 | * @brief This module is the implementation of the Xmodem protocol. 6 | * 7 | * Copyright (c) 2018 Ferenc Nemeth - https://github.com/ferenc-nemeth 8 | */ 9 | 10 | #include "xmodem.h" 11 | #include "main.h" 12 | #include "serial.h" 13 | #include "helpers.h" 14 | #include "flash.h" 15 | #include 16 | 17 | 18 | /* Global variables. */ 19 | static uint8_t xmodem_packet_number; /**< Packet number counter. */ 20 | static uint32_t xmodem_actual_flash_address; /**< Address where we have to write. */ 21 | static uint8_t x_first_packet_received; /**< First packet or not. */ 22 | 23 | /* Local functions. */ 24 | static uint16_t xmodem_calc_crc(uint8_t const* data, uint16_t length); 25 | static xmodem_status xmodem_handle_packet(uint8_t size); 26 | static xmodem_status xmodem_error_handler(uint8_t * const error_number); 27 | 28 | static bool ledState; 29 | static void blink_led(void) 30 | { 31 | /* Reset WD */ 32 | fwdgt_counter_reload(); 33 | /* Change LED state */ 34 | status_led1(ledState); 35 | ledState = !ledState; 36 | } 37 | 38 | /** 39 | * @brief This function is the base of the Xmodem protocol. 40 | * When we receive a header from UART, it decides what action it shall 41 | * take. 42 | * @param void 43 | * @return void 44 | */ 45 | void xmodem_receive(void) { 46 | xmodem_status status = X_OK; 47 | uint8_t error_number = 0u, header; 48 | 49 | x_first_packet_received = false; 50 | xmodem_packet_number = 1u; 51 | xmodem_actual_flash_address = APP_START_ADDR; 52 | 53 | /* Loop until there isn't any error (or until we jump to the user 54 | * application). */ 55 | while (X_OK == status) { 56 | header = 0x00u; 57 | 58 | /* Get the header from UART. */ 59 | if (UART_ERROR == serial_read_timeout(&header, 1u, 200u)) { 60 | /* Spam the host (until we receive something) with ACSII "C", to notify it, 61 | * we want to use CRC-16. */ 62 | if (false == x_first_packet_received) { 63 | (void)serial_write(X_C); 64 | blink_led(); 65 | } 66 | /* Uart timeout or any other errors. */ 67 | else { 68 | status = xmodem_error_handler(&error_number); 69 | } 70 | continue; 71 | } 72 | 73 | /* The header can be: SOH, STX, EOT and CAN. */ 74 | switch (header) { 75 | /* 128 or 1024 bytes of data. */ 76 | case X_SOH: 77 | case X_STX: { 78 | xmodem_status packet_status = xmodem_handle_packet(header); 79 | if (X_OK != packet_status) { 80 | /* If the error was flash related, then immediately set the error counter 81 | * to max (graceful abort). 82 | */ 83 | if (X_ERROR_FLASH == packet_status) { 84 | error_number = X_MAX_ERRORS; 85 | } 86 | /* Error while processing the packet, either send a NAK or do graceful abort. */ 87 | status = xmodem_error_handler(&error_number); 88 | } 89 | break; 90 | } 91 | /* End of Transmission. */ 92 | case X_EOT: 93 | if (x_first_packet_received) { 94 | /* ACK, feedback to user (as a text), then jump to user application. */ 95 | (void)serial_write(X_ACK); 96 | flash_jump_to_app(); 97 | } 98 | status = X_ERROR; // Restart sequence 99 | break; 100 | /* Abort from host. */ 101 | case X_CAN: 102 | status = X_ERROR; 103 | break; 104 | default: 105 | /* Wrong header. */ 106 | status = xmodem_error_handler(&error_number); 107 | break; 108 | } 109 | } 110 | } 111 | 112 | /** 113 | * @brief Calculates the CRC-16 for the input package. 114 | * @param *data: Array of the data which we want to calculate. 115 | * @param length: Size of the data, either 128 or 1024 bytes. 116 | * @return status: The calculated CRC. 117 | */ 118 | static uint16_t xmodem_calc_crc(uint8_t const* data, uint16_t length) { 119 | uint16_t crc = 0u; 120 | 121 | fwdgt_counter_reload(); 122 | if ((xmodem_packet_number & 3) == 0) { 123 | blink_led(); 124 | } 125 | 126 | while (length) { 127 | length--; 128 | crc = crc ^ ((uint16_t)*data++ << 8u); 129 | for (uint8_t i = 0u; i < 8u; i++) { 130 | if (crc & 0x8000u) { 131 | crc = (crc << 1u) ^ 0x1021u; 132 | } else { 133 | crc = crc << 1u; 134 | } 135 | } 136 | } 137 | return crc; 138 | } 139 | 140 | /* 2 bytes for packet number, 1024 for data, 2 for CRC*/ 141 | uint8_t received_packet_number[X_PACKET_NUMBER_SIZE]; 142 | uint8_t WORD_ALIGNED_ATTR received_packet_data[X_PACKET_1024_SIZE]; 143 | uint8_t received_packet_crc[X_PACKET_CRC_SIZE]; 144 | 145 | /** 146 | * @brief This function handles the data packet we get from the xmodem 147 | * protocol. 148 | * @param header: SOH or STX. 149 | * @return status: Report about the packet. 150 | */ 151 | static xmodem_status xmodem_handle_packet(uint8_t const header) 152 | { 153 | uint16_t size = 0u, crc_received, crc_calculated; 154 | 155 | /* Get the size of the data. */ 156 | if (X_SOH == header) 157 | { 158 | size = X_PACKET_128_SIZE; 159 | } 160 | else if (X_STX == header) 161 | { 162 | size = X_PACKET_1024_SIZE; 163 | } 164 | else 165 | { 166 | /* Wrong header type. This shoudn't be possible... */ 167 | return X_ERROR; 168 | } 169 | 170 | /* Reset WD */ 171 | fwdgt_counter_reload(); 172 | 173 | /* Get the packet number, data and CRC from UART. */ 174 | #define TIMEOUT 100 // 100ms 175 | if (UART_ERROR == serial_read_timeout(&received_packet_number[0u], sizeof(received_packet_number), TIMEOUT)) 176 | return X_ERROR_UART; 177 | if (UART_ERROR == serial_read_timeout(&received_packet_data[0u], size, TIMEOUT)) 178 | return X_ERROR_UART; 179 | if (UART_ERROR == serial_read_timeout(&received_packet_crc[0u], sizeof(received_packet_crc), TIMEOUT)) 180 | return X_ERROR_UART; 181 | 182 | /* Merge the two bytes of CRC. */ 183 | crc_received = (((uint16_t)received_packet_crc[X_PACKET_CRC_HIGH_INDEX] << 8u) | 184 | ((uint16_t)received_packet_crc[X_PACKET_CRC_LOW_INDEX])); 185 | /* We calculate it too. */ 186 | crc_calculated = xmodem_calc_crc(&received_packet_data[0u], size); 187 | 188 | /* error handling. */ 189 | if (xmodem_packet_number != received_packet_number[X_PACKET_NUMBER_INDEX]) 190 | { 191 | /* Packet number counter mismatch. */ 192 | return X_ERROR_NUMBER; 193 | } 194 | if (255u != (received_packet_number[X_PACKET_NUMBER_INDEX] + received_packet_number[X_PACKET_NUMBER_COMPLEMENT_INDEX])) 195 | { 196 | /* The sum of the packet number and packet number complement aren't 255. */ 197 | /* The sum always has to be 255. */ 198 | return X_ERROR_NUMBER; 199 | } 200 | if (crc_calculated != crc_received) 201 | { 202 | /* The calculated and received CRC are different. */ 203 | return X_ERROR_CRC; 204 | } 205 | 206 | /* If it is the first packet, then erase the memory. */ 207 | if (false == x_first_packet_received) 208 | { 209 | /* Reset WD */ 210 | fwdgt_counter_reload(); 211 | if (0 > flash_storage_erase(APP_START_ADDR, APP_SIZE)) 212 | { 213 | return X_ERROR_FLASH; 214 | } 215 | x_first_packet_received = true; 216 | } 217 | 218 | /* Reset WD */ 219 | fwdgt_counter_reload(); 220 | 221 | /* Do the actual flashing (if there weren't any errors). */ 222 | if (0 > flash_storage_write(xmodem_actual_flash_address, 223 | (uint32_t*)&received_packet_data[0u], 224 | (uint32_t)size / 4u)) 225 | { 226 | /* Flashing error. */ 227 | return X_ERROR_FLASH; 228 | } 229 | 230 | /* Raise the packet number and the address counters (if there weren't any errors). */ 231 | xmodem_packet_number++; 232 | xmodem_actual_flash_address += size; 233 | 234 | /* the handling was successful, then send an ACK. */ 235 | (void)serial_write(X_ACK); 236 | return X_OK; 237 | } 238 | 239 | /** 240 | * @brief Handles the xmodem error. 241 | * Raises the error counter, then if the number of the errors reached 242 | * critical, do a graceful abort, otherwise send a NAK. 243 | * @param *error_number: Number of current errors (passed as a pointer). 244 | * @return status: X_ERROR in case of too many errors, X_OK otherwise. 245 | */ 246 | static xmodem_status xmodem_error_handler(uint8_t * const error_number) 247 | { 248 | /* Reset WD */ 249 | fwdgt_counter_reload(); 250 | 251 | /* Raise the error counter. */ 252 | (*error_number)++; 253 | /* If the counter reached the max value, then abort. */ 254 | if ((*error_number) >= X_MAX_ERRORS) { 255 | /* Graceful abort. */ 256 | (void)serial_write(X_CAN); 257 | (void)serial_write(X_CAN); 258 | return X_ERROR; 259 | } 260 | 261 | /* Otherwise send a NAK for a repeat. */ 262 | (void)serial_write(X_NAK); 263 | return X_OK; 264 | } 265 | -------------------------------------------------------------------------------- /src/xmodem.h: -------------------------------------------------------------------------------- 1 | /** 2 | * @file xmodem.h 3 | * @author Ferenc Nemeth 4 | * @date 21 Dec 2018 5 | * @brief This module is the implementation of the Xmodem protocol. 6 | * 7 | * Copyright (c) 2018 Ferenc Nemeth - https://github.com/ferenc-nemeth 8 | */ 9 | 10 | #ifndef XMODEM_H_ 11 | #define XMODEM_H_ 12 | 13 | #include 14 | 15 | 16 | /* Xmodem (128 bytes) packet format 17 | * Byte 0: Header 18 | * Byte 1: Packet number 19 | * Byte 2: Packet number complement 20 | * Bytes 3-130: Data 21 | * Bytes 131-132: CRC 22 | */ 23 | 24 | /* Xmodem (1024 bytes) packet format 25 | * Byte 0: Header 26 | * Byte 1: Packet number 27 | * Byte 2: Packet number complement 28 | * Bytes 3-1026: Data 29 | * Bytes 1027-1028: CRC 30 | */ 31 | 32 | /* Maximum allowed errors (user defined). */ 33 | #define X_MAX_ERRORS ((uint8_t)3u) 34 | 35 | /* Sizes of the packets. */ 36 | #define X_PACKET_NUMBER_SIZE ((uint16_t)2u) 37 | #define X_PACKET_128_SIZE ((uint16_t)128u) 38 | #define X_PACKET_1024_SIZE ((uint16_t)1024u) 39 | #define X_PACKET_CRC_SIZE ((uint16_t)2u) 40 | 41 | /* Indexes inside packets. */ 42 | #define X_PACKET_NUMBER_INDEX ((uint16_t)0u) 43 | #define X_PACKET_NUMBER_COMPLEMENT_INDEX ((uint16_t)1u) 44 | #define X_PACKET_CRC_HIGH_INDEX ((uint16_t)0u) 45 | #define X_PACKET_CRC_LOW_INDEX ((uint16_t)1u) 46 | 47 | /* Bytes defined by the protocol. */ 48 | #define X_SOH ((uint8_t)0x01u) /**< Start Of Header (128 bytes). */ 49 | #define X_STX ((uint8_t)0x02u) /**< Start Of Header (1024 bytes). */ 50 | #define X_EOT ((uint8_t)0x04u) /**< End Of Transmission. */ 51 | #define X_ACK ((uint8_t)0x06u) /**< Acknowledge. */ 52 | #define X_NAK ((uint8_t)0x15u) /**< Not Acknowledge. */ 53 | #define X_CAN ((uint8_t)0x18u) /**< Cancel. */ 54 | #define X_C ((uint8_t)0x43u) /**< ASCII "C" to notify the host we want to use CRC16. */ 55 | 56 | /* Status report for the functions. */ 57 | typedef enum { 58 | X_OK = 0x00u, /**< The action was successful. */ 59 | X_ERROR_CRC = 0x01u, /**< CRC calculation error. */ 60 | X_ERROR_NUMBER = 0x02u, /**< Packet number mismatch error. */ 61 | X_ERROR_UART = 0x04u, /**< UART communication error. */ 62 | X_ERROR_FLASH = 0x08u, /**< Flash related error. */ 63 | X_ERROR = 0xFFu /**< Generic error. */ 64 | } xmodem_status; 65 | 66 | void xmodem_receive(void); 67 | 68 | #endif /* XMODEM_H_ */ 69 | --------------------------------------------------------------------------------