├── .gitignore ├── .gitmodules ├── .gitpod.Dockerfile ├── .gitpod.yml ├── .vscode ├── c_cpp_properties.json ├── launch.json └── tasks.json ├── COMMUNICATION.md ├── LICENSE ├── README.md ├── docs ├── rm0091-stm32f0x-reference-manual.pdf ├── stm32f031k6.pdf └── stm32f051k8.pdf ├── rules.mk ├── scripts ├── STM32F031x.svd ├── binary-parser.c ├── black_magic_probe_debug.scr └── black_magic_probe_flash.scr └── src ├── Makefile └── main.c /.gitignore: -------------------------------------------------------------------------------- 1 | bin/ 2 | *.elf 3 | *.bin 4 | *.o 5 | *.cortex-debug.*.json 6 | generated.*.ld 7 | -------------------------------------------------------------------------------- /.gitmodules: -------------------------------------------------------------------------------- 1 | [submodule "libopencm3"] 2 | path = libopencm3 3 | url = https://github.com/libopencm3/libopencm3 4 | -------------------------------------------------------------------------------- /.gitpod.Dockerfile: -------------------------------------------------------------------------------- 1 | FROM gitpod/workspace-full 2 | 3 | USER gitpod 4 | 5 | # Install custom tools, runtime, etc. using apt-get 6 | 7 | RUN sudo apt-get -q update && sudo apt-get install -yq gcc-arm-none-eabi && sudo rm -rf /var/lib/apt/lists/* 8 | 9 | # More information: https://www.gitpod.io/docs/config-docker/ -------------------------------------------------------------------------------- /.gitpod.yml: -------------------------------------------------------------------------------- 1 | tasks: 2 | - command: make -C libopencm3 && make -C src 3 | image: 4 | file: .gitpod.Dockerfile 5 | -------------------------------------------------------------------------------- /.vscode/c_cpp_properties.json: -------------------------------------------------------------------------------- 1 | { 2 | "configurations": [ 3 | { 4 | "name": "Linux", 5 | "includePath": [ 6 | "${workspaceFolder}/**" 7 | ], 8 | "defines": [ 9 | "STM32F0", 10 | "__ARM_ARCH_6M__" 11 | ], 12 | "compilerPath": "/usr/share/gcc-arm-none-eabi-9-2020-q2-update/bin/arm-none-eabi-gcc", 13 | "cStandard": "c99", 14 | "cppStandard": "c++14", 15 | "intelliSenseMode": "gcc-arm" 16 | } 17 | ], 18 | "version": 4 19 | } -------------------------------------------------------------------------------- /.vscode/launch.json: -------------------------------------------------------------------------------- 1 | { 2 | "version": "0.2.0", 3 | "configurations": [ 4 | { 5 | "name": "Shelly Dimmer 1 (BlackMagicProbe)", 6 | "type": "cortex-debug", 7 | "request": "attach", 8 | "servertype": "bmp", 9 | "cwd": "${workspaceRoot}/src", 10 | "executable": "shelly-dimmer-stm32.elf", 11 | "svdFile": "../scripts/STM32F031x.svd", 12 | "BMPGDBSerialPort": "/dev/ttyS15", 13 | "powerOverBMP": "enable", 14 | }, 15 | { 16 | "name": "Shelly Dimmer 2 (BlackMagicProbe)", 17 | "type": "cortex-debug", 18 | "request": "attach", 19 | "servertype": "bmp", 20 | "cwd": "${workspaceRoot}/src", 21 | "executable": "shelly-dimmer-stm32.elf", 22 | "svdFile": "../scripts/STM32F0xx.svd", 23 | "BMPGDBSerialPort": "/dev/ttyS15", 24 | }, 25 | ] 26 | } -------------------------------------------------------------------------------- /.vscode/tasks.json: -------------------------------------------------------------------------------- 1 | { 2 | "version": "2.0.0", 3 | "tasks": [ 4 | { 5 | "type": "shell", 6 | "label": "flash", 7 | "command": "make", 8 | "args": [ 9 | "flash", 10 | "BMP_PORT=/dev/ttyS15" 11 | ], 12 | "options": { 13 | "cwd": "${workspaceFolder}/src" 14 | }, 15 | "problemMatcher": [ 16 | "$gcc" 17 | ], 18 | "group": "build" 19 | } 20 | ] 21 | } -------------------------------------------------------------------------------- /COMMUNICATION.md: -------------------------------------------------------------------------------- 1 | ## Packet format 2 | 3 | | Start byte | Packet ID | Command ID | Payload length | Payload data | Checksum | End byte | 4 | | ---------- | --------- | ---------- | -------------- | ------------ | -------- | -------- | 5 | | | 6 | 7 | The maximum packet length is 256 bytes. 8 | 9 | Multi-byte words are sent in little-endian order. 10 | 11 | ### Start byte 12 | Length: 1 byte 13 | Description: Start byte (`SHD_START_BYTE`) is defined as `0x01`. 14 | 15 | ### Packet ID 16 | Length: 1 byte 17 | Description: Packet ID counts in a loop from `0` to `255` and increments for packet sent. The reply sent by the STM32 must match this packet ID which the ESP8266 sent. 18 | 19 | ### Command ID 20 | Length: 1 byte 21 | Description: Command ID used to define what the packet should do. Along with the packet ID, this should be matched in the reply. The following commands are defined: 22 | 23 | | Command name | ID | 24 | | ----------------------- | ------ | 25 | | `SHD_SWITCH_CMD` | `0x01` | 26 | | `SHD_SWITCH_FADE_CMD` | `0x02` | 27 | | `SHD_POLL_CMD` | `0x10` | 28 | | `SHD_VERSION_CMD` | `0x11` | 29 | | `SHD_SETTINGS_CMD` | `0x20` | 30 | | `SHD_WARMUP_CMD` | `0x21` | 31 | | `SHD_CALIBRATION1_CMD` | `0x30` | 32 | | `SHD_CALIBRATION2_CMD` | `0x31` | 33 | 34 | Descriptions of commands can be found below. 35 | 36 | ### Payload length 37 | Length: 1 byte 38 | Description: Describes the length of the payload data. This is not the total packet length. 39 | 40 | ### Payload data 41 | Length: 249 maximum, does not need to be longer than command requires. 42 | Description: This contains the data defined by the command specification. Read below. 43 | 44 | ### Checksum 45 | Length: 2 bytes 46 | Description: A simple 16-bit addition checksum. Add up all bytes of data from packet ID through to the last byte of payload data (start byte is excluded from checksum). 47 | 48 | ### End byte 49 | Length: 1 byte 50 | Description: End byte (`SHD_END_BYTE`) is defined as `0x04`. 51 | 52 | ## Commanmd format 53 | ### Switch command - `0x01` 54 | #### Query (from ESP8266) 55 | | Byte | Payload value | 56 | | --------- | ------------------------- | 57 | | `[0-1]` | Requested brightness | 58 | 59 | Payload length: 2 bytes 60 | Requested brightness (16-bit): Valid values between 0 (off) and 1000 (fully on). 61 | 62 | #### Response (from STM32) 63 | | Byte | Payload value | 64 | | --------- | ------------------------- | 65 | | `[0]` | Acknowledge | 66 | 67 | Payload length: 1 byte 68 | Acknowledge: Command accepted. Defined as `0x01`. 69 | 70 | ### Switch fade command - `0x02` 71 | #### Query (from ESP8266) 72 | | Byte | Payload value | 73 | | --------- | ------------------------- | 74 | | `[0-1]` | Requested brightness | 75 | | `[2-3]` | Brightness delta | 76 | | `[4-5]` | Unknown! | 77 | 78 | Payload length: 6 bytes 79 | Requested brightness (16-bit): Valid values between 0 (off) and 1000 (fully on). 80 | Brightness delta (16-bit): Not used in this firmware. From stock Shelly firmware, seemed to be definded as 0.8 * Δ brightness. 81 | Unknown (16-bit): Included for compatibility with stock firmware, however the function of this is unknown and can safely be sent as `0x00`. 82 | 83 | #### Response (from STM32) 84 | | Byte | Payload value | 85 | | --------- | ------------------------- | 86 | | `[0]` | Acknowledge | 87 | 88 | Payload length: 1 byte 89 | Acknowledge: Command accepted. Defined as `0x01`. 90 | 91 | ### Poll command - `0x10` 92 | | Byte | Payload value | 93 | | --------- | ------------------------- | 94 | | | | 95 | 96 | Payload length: 0 bytes 97 | Description: No payload sent from ESP8266. 98 | 99 | #### Response (from STM32) 100 | | Byte | Payload value | 101 | | --------- | ------------------------- | 102 | | `[0-1]` | Hardware version | 103 | | `[2-3]` | Actual brightness | 104 | | `[4-7]` | Active power | 105 | | `[8-11]` | Voltage | 106 | | `[12-15]` | Current | 107 | | `[16]` | Leading edge | 108 | 109 | Payload length: 17 bytes 110 | Hardware version (16-bit): This differs from the stock firmware. Shelly dimmer 1 is defined as `0x00`. Shelly dimmer 2 is defined as `0x01`. 111 | Actual brightness (16-bit): What brightness the dimmer is currently set to. Valid values between 0 (off) and 1000 (fully on). 112 | Active power (32-bit): Used on the Shelly dimmer 1 and Shelly dimmer 2 when neutral is connected. Value is taken from raw PWM frequency from HLW8012 power measurment chip, thus acutal power in watts can be calculated as 880373 / power. 113 | Voltage (32-bit): Used on the Shelly dimmer 1 if patched (see https://github.com/arendst/Tasmota/issues/6914#issuecomment-691668208) and Shelly dimmer 2 when neutral is connected. Value is taken from raw PWM frequency from HLW8012 power measurment chip, thus voltage in volts can be calculated as 347800 / voltage. 114 | Current (32-bit): Used on the Shelly dimmer 1 and Shelly dimmer 2. Value is taken from raw PWM frequency from HLW8012 power measurment chip, thus current in amps can be calculated as 1448 / current. 115 | Leading edge (8-bit): This differs from the stock firmware. Reports the dimming mode currently being used. Trailing edge is defined as `0x00` (false) and leading edge is defined as `0x01` (true). 116 | 117 | ### Version command - `0x11` 118 | #### Query (from ESP8266) 119 | | Byte | Payload value | 120 | | --------- | ------------------------- | 121 | | | | 122 | 123 | Payload length: 0 bytes 124 | Description: No payload sent from ESP8266. 125 | 126 | #### Response (from STM32) 127 | | Byte | Payload value | 128 | | --------- | ------------------------- | 129 | | `[0]` | Minor version number | 130 | | `[1]` | Major version number | 131 | 132 | Payload length: 2 bytes 133 | Description: Version number interpreted as `v(major).(minor)`, for example `v50.1`. 134 | 135 | ### Settings command - `0x20` 136 | #### Query (from ESP8266) 137 | | Byte | Payload value | 138 | | --------- | ------------------------- | 139 | | `[0-1]` | Requested brightness | 140 | | `[2-3]` | Leading edge | 141 | | `[4-5]` | Fade rate | 142 | | `[6-7]` | Warmup brightness | 143 | | `[8-9]` | Warmup time | 144 | 145 | Payload length: 10 bytes 146 | Requested brightness (16-bit): Valid values between 0 (off) and 1000 (fully on). 147 | Leading edge (16-bit): Which dimming mode should be used. Trailing edge is defined as `0x02` and leading edge is defined as `0x01`. 148 | Fade rate (16-bit): Not used in this firmware, however kept for compatibiliity with stock firmware. Brightness fading controlled by ESP8266 is preferred. Can safely be sent as `0x00`. 149 | Warmup brightness (16-bit): Not used in this firmware. From stock Shelly firmware, used to 'kick start' the bulb when turning on at low brightnesses. Warmup brightness valid values between 0 (off) and 1000 (fully on). 150 | Warmup time (16-bit): Not used in this firmware. From stock Shelly firmware, used to 'kick start' the bulb when turning on at low brightnesses. Warmup time given in milliseconds. 151 | 152 | #### Response (from STM32) 153 | | Byte | Payload value | 154 | | --------- | ------------------------- | 155 | | `[0]` | Acknowledge | 156 | 157 | Payload length: 1 byte 158 | Acknowledge: Command accepted. Defined as `0x01`. 159 | 160 | ### Warmup command - `0x21` 161 | #### Query (from ESP8266) 162 | | Byte | Payload value | 163 | | --------- | ------------------------- | 164 | | `[0-1]` | Warmup brightness | 165 | | `[2-3]` | Warmup time | 166 | 167 | Payload length: 2 bytes 168 | Warmup brightness (16-bit): Not used in this firmware. From stock Shelly firmware, used to 'kick start' the bulb when turning on at low brightnesses. Warmup brightness valid values between 0 (off) and 1000 (fully on). 169 | Warmup time (16-bit): Not used in this firmware. From stock Shelly firmware, used to 'kick start' the bulb when turning on at low brightnesses. Warmup time given in milliseconds. 170 | 171 | #### Response (from STM32) 172 | | Byte | Payload value | 173 | | --------- | ------------------------- | 174 | | `[0]` | Acknowledge | 175 | 176 | Payload length: 1 byte 177 | Acknowledge: Command accepted. Defined as `0x01`. 178 | 179 | ### Calibration1 command - `0x30` 180 | #### Query (from ESP8266) 181 | | Byte | Payload value | 182 | | --------- | ------------------------- | 183 | | `[0-199]` | Calibration data | 184 | 185 | Payload length: 200 bytes 186 | Calibration data: Not used in this firmware. Unknown calibration data format. 187 | 188 | #### Response (from STM32) 189 | | Byte | Payload value | 190 | | --------- | ------------------------- | 191 | | `[0-199]` | Calibration data | 192 | 193 | Payload length: 200 bytes 194 | Calibration data: Not used in this firmware. Unknown calibration data format. 195 | 196 | ### Calibration2 command - `0x31` 197 | #### Query (from ESP8266) 198 | | Byte | Payload value | 199 | | --------- | ------------------------- | 200 | | `[0-199]` | Calibration data | 201 | 202 | Payload length: 200 bytes 203 | Calibration data: Not used in this firmware. Unknown calibration data format. 204 | 205 | #### Response (from STM32) 206 | | Byte | Payload value | 207 | | --------- | ------------------------- | 208 | | `[0-199]` | Calibration data | 209 | 210 | Payload length: 200 bytes 211 | Calibration data: Not used in this firmware. Unknown calibration data format. 212 | -------------------------------------------------------------------------------- /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. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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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 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 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 | {project} Copyright (C) {year} {fullname} 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 | An open-source firmware for the STM32 co-processor on the Shelly Dimmer and Shelly Dimmer 2. 2 | 3 | [![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0) 4 | [![Open in Gitpod](https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/jamesturton/shelly-dimmer-stm32) 5 | [![Open in Visual Studio Code](https://img.shields.io/badge/VSCode-Ready--to--Code-blue?logo=visualstudiocode&logoColor=007acc)](https://open.vscode.dev/jamesturton/shelly-dimmer-stm32) 6 | 7 | # Disclaimer 8 | 9 | :warning: **DANGER OF ELECTROCUTION** :warning: 10 | 11 | The Shelly Dimmer 1 and Shelly Dimmer 2 connect to mains electricity (AC power), therefore there is danger of electrocution if not installed properly. If you don't know how to install it, please call an electrician (***Beware:*** certain countries prohibit installation without a licensed electrician present). Remember: _**SAFETY FIRST**_. It is not worth the risk to yourself, your family and your home if you don't know exactly what you are doing. Never tinker or try to flash a device using the serial programming interface while it is connected to MAINS ELECTRICITY (AC power). 12 | 13 | We don't take any responsibility nor liability for using this software nor for the installation or any tips, advice, videos, etc. given by any member of this site or any related site. 14 | 15 | # Pre-build binary 16 | See the [releases](https://github.com/jamesturton/shelly-dimmer-stm32/releases) page to download the latest pre-build binary. 17 | 18 | # Instructions 19 | 20 | Use [Gitpod](https://gitpod.io/#https://github.com/jamesturton/shelly-dimmer-stm32) to edit and compile the firmware from within your browser. 21 | 22 | For building local on your PC do: 23 | 24 | 1. ```git clone --recurse-submodules https://github.com/jamesturton/shelly-dimmer-stm32.git``` 25 | 2. ```cd shelly-dimmer-stm32``` 26 | 3. ```make -C libopencm3 # (Only needed once)``` 27 | 4. ```make -C src``` 28 | 29 | If you have an older git, or got ahead of yourself and skipped the ```--recurse-submodules``` 30 | you can fix things by running ```git submodule update --init``` (This is only needed once) 31 | 32 | To flash the firmware directly to the STM32 chip using a programmer such as the Black Magic Probe (ST-Link could also be used): 33 | 34 | 5. ```make -C src flash BMP_PORT=/dev/ttyBmpGdb``` 35 | 36 | # Communication protocol 37 | Information on the communication protocol used can be found [here](COMMUNICATION.md). 38 | 39 | # Pinout 40 | Here is a guess of the pinout of the *STM32F031K6* chip. 41 | 42 | ![stm32f031k6](https://user-images.githubusercontent.com/6130792/86444616-494b8080-bd11-11ea-8eeb-c07b69b8af35.PNG) 43 | 44 | | Pin | Name | Function - Shelly Dimmer 1 | Function - Shelly Dimmer 2 | Pin type | 45 | | ----- | --------- | ----------------------------- | ----------------------------- | - | 46 | | 1 | VDD | 3V3 | 3V3 | | 47 | | 2 | OCS_IN | - | - | | 48 | | 3 | OCS_OUT | - | - | | 49 | | 4 | NRST | NRST | NRST | | 50 | | 5 | VDDA | 3V3 | 3V3 | | 51 | | 6 | PA0 | CF1 HLW8012 | - | Input | 52 | | 7 | PA1 | CF HLW8012 | - | Input | 53 | | 8 | PA2 | - | - | Input | 54 | | 9 | PA3 | - | ?? | Input | 55 | | 10 | PA4 | - | - | Input | 56 | | 11 | PA5 | - | Live pin sense | Analog | 57 | | 12 | PA6 | TEST POINT | - | Input | 58 | | 13 | PA7 | TEST POINT | Output pin sense | Analog | 59 | | 14 | PB0 | - | ?? | Input | 60 | | 15 | PB1 | - | Board HW version? | Input | 61 | | 16 | PB2 | Zero-crossing detection | ?? | Input ExtInt | 62 | | 17 | VDD | GND | GND | | 63 | | 18 | PA8 | ON MOSFET 1 | - | Input | 64 | | 19 | PA9 | USART_TX | USART_TX | AltFun | 65 | | 20 | PA10 | USART_RX | USART_RX | AltFun | 66 | | 21 | PA11 | ON MOSFET 2 | ON MOSFET 1 | Output | 67 | | 22 | PA12 | - | ON MOSFET 2 | Output | 68 | | 23 | PA13 | SWDIO | SWDIO | AltFun | 69 | | 24 | PA14 | SWCLK | SWCLK | AltFun | 70 | | 25 | PA15 | - | - | Input | 71 | | 26 | PB3 | - | - | Input | 72 | | 27 | PB4 | - | - | Input | 73 | | 28 | PB5 | - | - | Input | 74 | | 29 | PB6 | - | - | Input | 75 | | 30 | PB7 | - | Pin7 A42 BAKN | Input ExtInt Live - Output | 76 | | 31 | BOOT0 | BOOT0 | BOOT0 | | 77 | | 32 | PB8 | SEL HLW8012 | - | Input | 78 | 79 | # Useful links 80 | - [HLW8012 Information](https://tinkerman.cat/post/hlw8012-ic-new-sonoff-pow) 81 | - [STM32F031 Reference manual](https://www.st.com/resource/en/reference_manual/dm00031936-stm32f0x1stm32f0x2stm32f0x8-advanced-armbased-32bit-mcus-stmicroelectronics.pdf) 82 | -------------------------------------------------------------------------------- /docs/rm0091-stm32f0x-reference-manual.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jamesturton/shelly-dimmer-stm32/3c91a521538f65664e84d9f8e49721ece7220367/docs/rm0091-stm32f0x-reference-manual.pdf -------------------------------------------------------------------------------- /docs/stm32f031k6.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jamesturton/shelly-dimmer-stm32/3c91a521538f65664e84d9f8e49721ece7220367/docs/stm32f031k6.pdf -------------------------------------------------------------------------------- /docs/stm32f051k8.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jamesturton/shelly-dimmer-stm32/3c91a521538f65664e84d9f8e49721ece7220367/docs/stm32f051k8.pdf -------------------------------------------------------------------------------- /rules.mk: -------------------------------------------------------------------------------- 1 | # This version of rules.mk expects the following to be defined before 2 | # inclusion.. 3 | ### REQUIRED ### 4 | # OPENCM3_DIR - duh 5 | # PROJECT - will be the basename of the output elf, eg usb-gadget0-stm32f4disco 6 | # CFILES - basenames only, eg main.c blah.c 7 | # DEVICE - the full device name, eg stm32f405ret6 8 | # _or_ 9 | # LDSCRIPT - full path, eg ../../examples/stm32/f4/stm32f4-discovery/stm32f4-discovery.ld 10 | # OPENCM3_LIB - the basename, eg: opencm3_stm32f4 11 | # OPENCM3_DEFS - the target define eg: -DSTM32F4 12 | # ARCH_FLAGS - eg, -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 13 | # (ie, the full set of cpu arch flags, _none_ are defined in this file) 14 | # 15 | ### OPTIONAL ### 16 | # INCLUDES - fully formed -I paths, if you want extra, eg -I../shared 17 | # BUILD_DIR - defaults to bin, should set this if you are building multiarch 18 | # OPT - full -O flag, defaults to -Os 19 | # CSTD - defaults -std=c99 20 | # CXXSTD - no default. 21 | # OOCD_INTERFACE - eg stlink-v2 22 | # OOCD_TARGET - eg stm32f4x 23 | # both only used if you use the "make flash" target. 24 | # OOCD_FILE - eg my.openocd.cfg 25 | # This overrides interface/target above, and is used as just -f FILE 26 | ### TODO/FIXME/notes ### 27 | # No support for stylecheck. 28 | # No support for BMP/texane/random flash methods, no plans either 29 | # No support for magically finding the library. 30 | # C++ hasn't been actually tested with this..... sorry bout that. ;) 31 | # Second expansion/secondary not set, add this if you need them. 32 | 33 | BUILD_DIR ?= bin 34 | OPT ?= -Os 35 | CSTD ?= -std=c99 36 | 37 | # Be silent per default, but 'make V=1' will show all compiler calls. 38 | # If you're insane, V=99 will print out all sorts of things. 39 | V?=0 40 | ifeq ($(V),0) 41 | Q := @ 42 | NULL := 2>/dev/null 43 | endif 44 | 45 | # Tool paths. 46 | PREFIX ?= arm-none-eabi- 47 | CC = $(PREFIX)gcc 48 | LD = $(PREFIX)gcc 49 | OBJCOPY = $(PREFIX)objcopy 50 | OBJDUMP = $(PREFIX)objdump 51 | OOCD ?= openocd 52 | GDB := $(PREFIX)gdb 53 | 54 | OPENCM3_INC = $(OPENCM3_DIR)/include 55 | SCRIPT_DIR = $(OPENCM3_DIR)/../scripts 56 | 57 | # Inclusion of library header files 58 | INCLUDES += $(patsubst %,-I%, . $(OPENCM3_INC) ) 59 | 60 | OBJS = $(CFILES:%.c=$(BUILD_DIR)/%.o) 61 | OBJS += $(AFILES:%.S=$(BUILD_DIR)/%.o) 62 | GENERATED_BINS = $(PROJECT).elf $(PROJECT).bin $(PROJECT).map $(PROJECT).list $(PROJECT).lss 63 | 64 | TGT_CPPFLAGS += -MD 65 | TGT_CPPFLAGS += -Wall -Wundef $(INCLUDES) 66 | TGT_CPPFLAGS += $(INCLUDES) $(OPENCM3_DEFS) 67 | 68 | TGT_CFLAGS += $(OPT) $(CSTD) -ggdb3 69 | TGT_CFLAGS += $(ARCH_FLAGS) 70 | TGT_CFLAGS += -fno-common 71 | TGT_CFLAGS += -ffunction-sections -fdata-sections 72 | TGT_CFLAGS += -Wextra -Wshadow -Wno-unused-variable -Wimplicit-function-declaration 73 | TGT_CFLAGS += -Wredundant-decls -Wstrict-prototypes -Wmissing-prototypes 74 | 75 | TGT_CXXFLAGS += $(OPT) $(CXXSTD) -ggdb3 76 | TGT_CXXFLAGS += $(ARCH_FLAGS) 77 | TGT_CXXFLAGS += -fno-common 78 | TGT_CXXFLAGS += -ffunction-sections -fdata-sections 79 | TGT_CXXFLAGS += -Wextra -Wshadow -Wredundant-decls -Weffc++ 80 | 81 | TGT_ASFLAGS += $(OPT) $(ARCH_FLAGS) -ggdb3 82 | 83 | TGT_LDFLAGS += -T$(LDSCRIPT) -L$(OPENCM3_DIR)/lib -nostartfiles 84 | TGT_LDFLAGS += $(ARCH_FLAGS) 85 | TGT_LDFLAGS += -specs=nano.specs 86 | TGT_LDFLAGS += -Wl,--gc-sections 87 | # OPTIONAL 88 | #TGT_LDFLAGS += -Wl,-Map=$(PROJECT).map 89 | ifeq ($(V),99) 90 | TGT_LDFLAGS += -Wl,--print-gc-sections 91 | endif 92 | 93 | # Linker script generator fills this in for us. 94 | ifeq (,$(DEVICE)) 95 | LDLIBS += -l$(OPENCM3_LIB) 96 | endif 97 | # nosys is only in newer gcc-arm-embedded... 98 | #LDLIBS += -specs=nosys.specs 99 | LDLIBS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group 100 | 101 | # Burn in legacy hell fortran modula pascal yacc idontevenwat 102 | .SUFFIXES: 103 | .SUFFIXES: .c .S .h .o .cxx .elf .bin .list .lss 104 | 105 | # Bad make, never *ever* try to get a file out of source control by yourself. 106 | %: %,v 107 | %: RCS/%,v 108 | %: RCS/% 109 | %: s.% 110 | %: SCCS/s.% 111 | 112 | all: $(PROJECT).elf $(PROJECT).bin 113 | flash: $(PROJECT).flash 114 | 115 | # error if not using linker script generator 116 | ifeq (,$(DEVICE)) 117 | $(LDSCRIPT): 118 | ifeq (,$(wildcard $(LDSCRIPT))) 119 | $(error Unable to find specified linker script: $(LDSCRIPT)) 120 | endif 121 | else 122 | # if linker script generator was used, make sure it's cleaned. 123 | GENERATED_BINS += $(LDSCRIPT) 124 | endif 125 | 126 | # Need a special rule to have a bin dir 127 | $(BUILD_DIR)/%.o: %.c 128 | @printf " CC\t$<\n" 129 | @mkdir -p $(dir $@) 130 | $(Q)$(CC) $(TGT_CFLAGS) $(CFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $< 131 | 132 | $(BUILD_DIR)/%.o: %.cxx 133 | @printf " CXX\t$<\n" 134 | @mkdir -p $(dir $@) 135 | $(Q)$(CC) $(TGT_CXXFLAGS) $(CXXFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $< 136 | 137 | $(BUILD_DIR)/%.o: %.S 138 | @printf " AS\t$<\n" 139 | @mkdir -p $(dir $@) 140 | $(Q)$(CC) $(TGT_ASFLAGS) $(ASFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $< 141 | 142 | $(PROJECT).elf: $(OBJS) $(LDSCRIPT) $(LIBDEPS) 143 | @printf " LD\t$@\n" 144 | $(Q)$(LD) $(TGT_LDFLAGS) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $@ 145 | 146 | %.bin: %.elf 147 | @printf " OBJCOPY\t$@\n" 148 | $(Q)$(OBJCOPY) -O binary $< $@ 149 | 150 | %.lss: %.elf 151 | $(OBJDUMP) -h -S $< > $@ 152 | 153 | %.list: %.elf 154 | $(OBJDUMP) -S $< > $@ 155 | 156 | ifeq ($(BMP_PORT),) 157 | %.flash: %.elf 158 | @printf " FLASH\t$<\n" 159 | ifeq (,$(OOCD_FILE)) 160 | $(Q)(echo "halt; program $(realpath $(*).elf) verify reset" | nc -4 localhost 4444 2>/dev/null) || \ 161 | $(OOCD) -f interface/$(OOCD_INTERFACE).cfg \ 162 | -f target/$(OOCD_TARGET).cfg \ 163 | -c "program $(*).elf verify reset exit" \ 164 | $(NULL) 165 | else 166 | $(Q)(echo "halt; program $(realpath $(*).elf) verify reset" | nc -4 localhost 4444 2>/dev/null) || \ 167 | $(OOCD) -f $(OOCD_FILE) \ 168 | -c "program $(realpath $(*).elf) verify reset exit" \ 169 | $(NULL) 170 | endif 171 | else 172 | %.flash: %.elf 173 | @printf " GDB $(*).elf (flash)\n" 174 | $(Q)$(GDB) --batch \ 175 | -ex 'target extended-remote $(BMP_PORT)' \ 176 | -x $(SCRIPT_DIR)/black_magic_probe_flash.scr \ 177 | $(*).elf 178 | endif 179 | 180 | clean: 181 | rm -rf $(BUILD_DIR) $(GENERATED_BINS) 182 | 183 | .PHONY: all clean flash 184 | -include $(OBJS:.o=.d) 185 | 186 | -------------------------------------------------------------------------------- /scripts/binary-parser.c: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of the shelly-dimmer-stm32 project. 3 | * https://github.com/jamesturton/shelly-dimmer-stm32 4 | * Copyright (c) 2020 James Turton. 5 | * 6 | * This program is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, version 3. 9 | * 10 | * This program is distributed in the hope that it will be useful, but 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 | * General Public License for more details. 14 | * 15 | * You should have received a copy of the GNU General Public License 16 | * along with this program. If not, see . 17 | */ 18 | 19 | 20 | #include 21 | #include 22 | #include 23 | 24 | int main(int argc, char **argv) 25 | { 26 | FILE *fileptr; 27 | unsigned char *buffer; 28 | long filelen; 29 | int i = 0; 30 | 31 | if (argc != 5) 32 | { 33 | fprintf(stderr, "USAGE: %s INPUT_FILE OUTPUT_FILE MAJOR_VERSION MINOR_VERSION\n", argv[0]); 34 | exit(1); 35 | } 36 | 37 | fileptr = fopen(argv[1], "rb"); 38 | if (fileptr == NULL) 39 | { 40 | fprintf(stderr, "Cannot open input file: %s\n", argv[1]); 41 | return 1; 42 | } 43 | 44 | fseek(fileptr, 0, SEEK_END); 45 | filelen = ftell(fileptr); 46 | rewind(fileptr); 47 | buffer = (unsigned char *)malloc((filelen+1)*sizeof(unsigned char)); 48 | 49 | fread(buffer, filelen, 1, fileptr); 50 | 51 | fclose(fileptr); 52 | 53 | fileptr = fopen(argv[2], "w"); 54 | if (fileptr == NULL) 55 | { 56 | fprintf(stderr, "Cannot open ouput file: %s\n", argv[2]); 57 | return 1; 58 | } 59 | 60 | fprintf(fileptr, "/* \n * This file has been generated by the shelly-dimmer-stm32 project.\n"); 61 | fprintf(fileptr, " * https://github.com/jamesturton/shelly-dimmer-stm32\n"); 62 | fprintf(fileptr, " * Copyright (c) 2020 James Turton.\n *\n"); 63 | fprintf(fileptr, " * This program is free software: you can redistribute it and/or modify \n"); 64 | fprintf(fileptr, " * it under the terms of the GNU General Public License as published by \n"); 65 | fprintf(fileptr, " * the Free Software Foundation, version 3.\n *\n"); 66 | fprintf(fileptr, " * This program is distributed in the hope that it will be useful, but \n"); 67 | fprintf(fileptr, " * WITHOUT ANY WARRANTY; without even the implied warranty of \n"); 68 | fprintf(fileptr, " * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU \n"); 69 | fprintf(fileptr, " * General Public License for more details.\n *\n"); 70 | fprintf(fileptr, " * You should have received a copy of the GNU General Public License \n"); 71 | fprintf(fileptr, " * along with this program. If not, see .\n */\n\n\n"); 72 | 73 | 74 | fprintf(fileptr, "static const uint8_t SHD_FIRMWARE_MAJOR_VERSION = %d;\n", atoi(argv[3])); 75 | fprintf(fileptr, "static const uint8_t SHD_FIRMWARE_MINOR_VERSION = %d;\n", atoi(argv[4])); 76 | fprintf(fileptr, "const uint8_t stm_firmware[] PROGMEM = {\n"); 77 | while (i < filelen) 78 | { 79 | fprintf(fileptr, " "); 80 | for (int j = 0; j < 12; j++) 81 | fprintf(fileptr, "0x%.2x, ", buffer[i++]); 82 | fprintf(fileptr, "\n"); 83 | } 84 | fprintf(fileptr, "};\n"); 85 | 86 | return 0; 87 | } 88 | -------------------------------------------------------------------------------- /scripts/black_magic_probe_debug.scr: -------------------------------------------------------------------------------- 1 | monitor version 2 | monitor tpwr enable 3 | monitor swdp_scan 4 | attach 1 5 | run 6 | -------------------------------------------------------------------------------- /scripts/black_magic_probe_flash.scr: -------------------------------------------------------------------------------- 1 | monitor version 2 | monitor tpwr enable 3 | monitor swdp_scan 4 | attach 1 5 | load 6 | -------------------------------------------------------------------------------- /src/Makefile: -------------------------------------------------------------------------------- 1 | PROJECT = shelly-dimmer-stm32 2 | BUILD_DIR = bin 3 | 4 | CFILES = main.c 5 | 6 | BINARY = usart 7 | 8 | # TODO - you will need to edit these two lines! 9 | DEVICE=stm32f031k6 10 | # DEVICE=stm32f051k8 11 | 12 | # You shouldn't have to edit anything below here. 13 | OPENCM3_DIR=../libopencm3 14 | 15 | include $(OPENCM3_DIR)/mk/genlink-config.mk 16 | include ../rules.mk 17 | include $(OPENCM3_DIR)/mk/genlink-rules.mk 18 | -------------------------------------------------------------------------------- /src/main.c: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of the shelly-dimmer-stm32 project. 3 | * https://github.com/jamesturton/shelly-dimmer-stm32 4 | * Copyright (c) 2020 James Turton. 5 | * 6 | * This program is free software: you can redistribute it and/or modify 7 | * it under the terms of the GNU General Public License as published by 8 | * the Free Software Foundation, version 3. 9 | * 10 | * This program is distributed in the hope that it will be useful, but 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 | * General Public License for more details. 14 | * 15 | * You should have received a copy of the GNU General Public License 16 | * along with this program. If not, see . 17 | */ 18 | 19 | 20 | #include 21 | #include 22 | #include 23 | #include 24 | #include 25 | #include 26 | #include 27 | #include 28 | #include 29 | #include 30 | 31 | #define SHD_DRIVER_MAJOR_VERSION 51 32 | #define SHD_DRIVER_MINOR_VERSION 7 33 | 34 | #define SHD_SWITCH_CMD 0x01 35 | #define SHD_SWITCH_FADE_CMD 0x02 36 | #define SHD_POLL_CMD 0x10 37 | #define SHD_VERSION_CMD 0x11 38 | #define SHD_SETTINGS_CMD 0x20 39 | #define SHD_WARMUP_CMD 0x21 40 | #define SHD_CALIBRATION1_CMD 0x30 41 | #define SHD_CALIBRATION2_CMD 0x31 42 | 43 | #define SHD_SWITCH_SIZE 2 44 | #define SHD_SWITCH_FADE_SIZE 6 45 | #define SHD_SETTINGS_SIZE 10 46 | #define SHD_WARMUP_SIZE 4 47 | #define SHD_CALIBRATION_SIZE 200 48 | 49 | #define SHD_START_BYTE 0x01 50 | #define SHD_END_BYTE 0x04 51 | 52 | #define SHD_BUFFER_SIZE 256 53 | 54 | #define SHD_CF1_PULSE_TIMEOUT 10000 55 | #define SHD_CF1_PULSE_MIN 1 56 | #define SHD_CF1_PULSE_MAX 1000 57 | 58 | #define ADC_NUM_CHANNELS 2 59 | 60 | typedef int32_t ring_size_t; 61 | 62 | struct ring { 63 | uint8_t *data; 64 | ring_size_t size; 65 | uint32_t begin; 66 | uint32_t end; 67 | }; 68 | 69 | struct ring output_ring; 70 | static uint8_t output_ring_buffer[SHD_BUFFER_SIZE]; 71 | 72 | static uint8_t rx_data[SHD_BUFFER_SIZE] = {0}; 73 | static uint8_t byte_counter = 0; 74 | 75 | static uint8_t id = 0; 76 | static uint8_t cmd = 0; 77 | 78 | static uint32_t systick_ms = 0; 79 | static uint32_t line_freq = 1000 * 64; // Guess we are at 50 Hz (x 64 for enhanced precision in IIR filter) 80 | static uint32_t line_freq_counter = 1000; // Guess we are at 50 Hz 81 | 82 | static uint32_t tim_ccr1_now = 0; 83 | static uint32_t tim_ccr1_last = 0; 84 | static uint32_t tim_ccr2_now = 0; 85 | static uint32_t tim_ccr2_last = 0; 86 | static uint32_t last_cf_interrupt = 0; 87 | static uint32_t first_cf1_interrupt = 0; 88 | static uint32_t last_cf1_interrupt = 0; 89 | static uint32_t cf1_pulse_count = 0; 90 | static uint32_t current_pulse_width = 0; 91 | static uint32_t voltage_pulse_width = 0; 92 | static uint32_t power_pulse_width = 0; 93 | static uint32_t power_pulse_count = 0; 94 | static bool current_mode = false; 95 | 96 | typedef enum 97 | { 98 | dimmer1, 99 | dimmer2, 100 | } 101 | hw_types; 102 | 103 | static hw_types hw_version = dimmer2; 104 | 105 | static uint16_t brightness = 0; 106 | static uint16_t brightness_req = 0; 107 | static uint32_t brightness_adj = 0; 108 | 109 | static bool leading_edge = false; 110 | static uint32_t low_brightness_threshold = 0; // switch on the mosfets later for low brightness (default to 0) 111 | 112 | static uint16_t adc_data[ADC_NUM_CHANNELS] = {0}; 113 | static uint8_t adc_channels[ADC_NUM_CHANNELS] = 114 | { 115 | 3, // ADC_CHANNEL3 - Live pin sense 116 | 8, // ADC_CHANNEL8 - Current sense 117 | }; 118 | 119 | static uint16_t adc_count = 0; 120 | static uint16_t current_max = 0; 121 | static uint16_t current_max_period = 0; 122 | static uint32_t current_total = 0; 123 | static float current_total_mag_period = 0; 124 | static uint32_t current_total_mag = 0; 125 | static uint16_t voltage_max = 0; 126 | static uint16_t voltage_max_period = 0; 127 | static uint32_t voltage_total = 0; 128 | #ifdef SHD_NO_NEUTRAL 129 | static uint16_t max_brightness = 500; 130 | #else 131 | static uint16_t max_brightness = 1000; 132 | #endif 133 | 134 | static void ring_init(struct ring *ring, uint8_t *buf, ring_size_t size) 135 | { 136 | ring->data = buf; 137 | ring->size = size; 138 | ring->begin = 0; 139 | ring->end = 0; 140 | } 141 | 142 | static int32_t ring_write_ch(struct ring *ring, uint8_t ch) 143 | { 144 | if (((ring->end + 1) % ring->size) != ring->begin) 145 | { 146 | ring->data[ring->end++] = ch; 147 | ring->end %= ring->size; 148 | return (uint32_t)ch; 149 | } 150 | 151 | return -1; 152 | } 153 | 154 | static int32_t ring_read_ch(struct ring *ring, uint8_t *ch) 155 | { 156 | int32_t ret = -1; 157 | 158 | if (ring->begin != ring->end) 159 | { 160 | ret = ring->data[ring->begin++]; 161 | ring->begin %= ring->size; 162 | if (ch) 163 | *ch = ret; 164 | } 165 | 166 | return ret; 167 | } 168 | 169 | static uint16_t checksum(uint8_t *buf, int len) 170 | { 171 | uint16_t chksm = 0; 172 | for (uint8_t i = 0; i < len; i++) 173 | chksm += buf[i]; 174 | return chksm; 175 | } 176 | 177 | static int check_byte(uint8_t *buf, uint8_t index) 178 | { 179 | uint8_t byte = buf[index]; 180 | 181 | if (index == 0) 182 | return byte == SHD_START_BYTE; 183 | 184 | if (index < 4) 185 | return 1; // We can't do any checking yet 186 | 187 | uint8_t data_length = buf[3]; 188 | if ((4 + data_length + 3) > SHD_BUFFER_SIZE) 189 | return 0; // Expected packet length too long to handle 190 | 191 | if (index < 4 + data_length + 1) 192 | return 1; // Again, we don't have any more to check 193 | 194 | if (index == 4 + data_length + 1) 195 | { 196 | // Compare checksum matches what it should do 197 | uint16_t chksm = (buf[index - 1] << 8 | buf[index]); 198 | uint16_t chksm_calc = checksum(&buf[1], 3 + data_length); 199 | if (chksm != chksm_calc) 200 | return 0; 201 | 202 | return 1; 203 | } 204 | 205 | if ((index == (4 + data_length + 2)) && (byte == SHD_END_BYTE)) 206 | return index; // Check end byte is valid 207 | 208 | return 0; 209 | } 210 | 211 | static void packet_process(uint8_t *buf) 212 | { 213 | uint8_t pos = 1; // Skip start byte 214 | uint8_t len = 0; 215 | 216 | id = buf[pos++]; 217 | cmd = buf[pos++]; 218 | len = buf[pos++]; 219 | 220 | (void)len; // We don't use the packet length here, but maybe in the future 221 | 222 | switch (cmd) 223 | { 224 | case SHD_SWITCH_CMD: 225 | { 226 | brightness_req = buf[pos + 1] << 8 | buf[pos + 0]; 227 | } 228 | break; 229 | case SHD_SETTINGS_CMD: 230 | { 231 | leading_edge = 2 - buf[pos + 2]; 232 | low_brightness_threshold = buf[pos + 7] << 8 | buf[pos + 6]; // this is warmup_brightness 233 | } 234 | break; 235 | default: 236 | break; // There are other valid commands, but for now ignore them 237 | } 238 | } 239 | 240 | static void generate_packet(uint8_t len, uint8_t *payload) 241 | { 242 | // 4 bytes pre-amble, 3 bytes post-amble 243 | uint8_t data[4 + len + 3]; 244 | uint16_t chksm; 245 | uint8_t pos = 0; 246 | 247 | data[0] = SHD_START_BYTE; 248 | data[1] = id; 249 | data[2] = cmd; 250 | data[3] = len; 251 | 252 | pos += 4; 253 | 254 | if (payload) 255 | { 256 | memcpy(data + 4, payload, len); 257 | pos += len; 258 | } 259 | 260 | // Calculate checksum from id and onwards 261 | chksm = checksum(data + 1, 3 + len); 262 | data[pos++] = chksm >> 8; 263 | data[pos++] = chksm & 0xff; 264 | data[pos++] = SHD_END_BYTE; 265 | 266 | for (int i = 0; i < pos; i++) 267 | ring_write_ch(&output_ring, data[i]); 268 | } 269 | 270 | static void check_cf_signal(void) 271 | { 272 | // Have we timed out waiting for CF pulse? 273 | if ((systick_ms - last_cf_interrupt) > SHD_CF1_PULSE_TIMEOUT) 274 | power_pulse_width = 0; 275 | } 276 | 277 | static void check_cf1_signal(void) 278 | { 279 | // Have we timed out waiting for CF1 pulse? 280 | if ((systick_ms - last_cf1_interrupt) > SHD_CF1_PULSE_TIMEOUT) 281 | { 282 | if (current_mode) 283 | current_pulse_width = 0; 284 | else 285 | voltage_pulse_width = 0; 286 | 287 | // Check the other current mode instead 288 | current_mode = !current_mode; 289 | if (current_mode) 290 | gpio_clear(GPIOB, GPIO8); 291 | else 292 | gpio_set(GPIOB, GPIO8); 293 | 294 | last_cf1_interrupt = first_cf1_interrupt = systick_ms; 295 | } 296 | } 297 | 298 | static uint32_t get_current(void) 299 | { 300 | if (hw_version == dimmer1) 301 | { 302 | // Power measurements are more sensitive to switch offs, 303 | // so we first check if power is 0 to set current_pulse_width to 0 too 304 | if (power_pulse_width == 0) 305 | current_pulse_width = 0; 306 | else 307 | check_cf1_signal(); 308 | 309 | return current_pulse_width; 310 | } 311 | else 312 | { 313 | // Todo(jamesturton): Fix these magic numbers! 314 | if (adc_data[1] == 0) 315 | return 0; 316 | else 317 | return (1448 * 556) / (float)current_total_mag_period; 318 | } 319 | } 320 | 321 | static uint32_t get_voltage(void) 322 | { 323 | if (hw_version == dimmer1) 324 | { 325 | check_cf1_signal(); 326 | return voltage_pulse_width; 327 | } 328 | else 329 | { 330 | // Todo(jamesturton): Fix these magic numbers! 331 | if (adc_data[0] == 0) 332 | return 0; 333 | else 334 | return (347800 * 15.5) / (float)voltage_max_period; 335 | } 336 | } 337 | 338 | static uint32_t get_active_power(void) 339 | { 340 | if (hw_version == dimmer1) 341 | { 342 | check_cf_signal(); 343 | return power_pulse_width; 344 | } 345 | else 346 | { 347 | // Todo(jamesturton): Fix these magic numbers! 348 | if ((adc_data[0] == 0) || (adc_data[1] == 0)) 349 | return 0; 350 | else 351 | return ((float)880373 * (float)15.5 * (float)556) / (float)((float)voltage_max_period * (float)current_total_mag_period); 352 | } 353 | } 354 | 355 | static void generate_reply(void) 356 | { 357 | uint8_t data[SHD_BUFFER_SIZE] = {0}; 358 | uint8_t len = 0; 359 | uint32_t voltage = get_voltage(); 360 | uint32_t current = get_current(); 361 | uint32_t wattage = get_active_power(); 362 | 363 | // Construct our packet depending on the cmd 364 | switch (cmd) 365 | { 366 | case SHD_SWITCH_CMD: 367 | case SHD_SETTINGS_CMD: 368 | { 369 | len = 1; 370 | data[0] = 0x01; 371 | } 372 | break; 373 | 374 | case SHD_VERSION_CMD: 375 | { 376 | len = 2; 377 | data[0] = SHD_DRIVER_MINOR_VERSION; 378 | data[1] = SHD_DRIVER_MAJOR_VERSION; 379 | } 380 | break; 381 | 382 | case SHD_POLL_CMD: 383 | { 384 | len = 17; 385 | data[0] = hw_version; // ?? 386 | data[1] = 0; // ?? 387 | data[2] = brightness_req & 0xff; // brightness 388 | data[3] = brightness_req >> 8; // brightness 389 | data[4] = wattage; // active power 390 | data[5] = wattage >> 8; // active power 391 | data[6] = wattage >> 16; // active power 392 | data[7] = wattage >> 24; // active power 393 | data[8] = voltage; // voltage 394 | data[9] = voltage >> 8; // voltage 395 | data[10] = voltage >> 16; // voltage 396 | data[11] = voltage >> 24; // voltage 397 | data[12] = current; // current 398 | data[13] = current >> 8; // current 399 | data[14] = current >> 16; // current 400 | data[15] = current >> 24; // current 401 | data[16] = leading_edge; // leading edge 402 | } 403 | break; 404 | 405 | default: 406 | return; 407 | } 408 | 409 | // Now send it off 410 | generate_packet(len, data); 411 | } 412 | 413 | static bool read_serial(uint8_t *buf, uint8_t *index) 414 | { 415 | uint8_t serial_in_byte = usart_recv(USART1); 416 | buf[*index] = serial_in_byte; 417 | 418 | int check = check_byte(buf, *index); 419 | 420 | if (check > 1) 421 | { 422 | // Finished 423 | packet_process(buf); 424 | *index = 0; 425 | return true; 426 | } 427 | else if (check == 0) 428 | *index = 0; // Wrong data, reset byte_counter 429 | else 430 | (*index)++; // Not finished recieving yet, increment byte_counter 431 | 432 | return false; 433 | } 434 | 435 | void usart1_isr(void) 436 | { 437 | // Check if we were called because of RXNE 438 | if (((USART_CR1(USART1) & USART_CR1_RXNEIE) != 0) && 439 | ((USART_ISR(USART1) & USART_ISR_RXNE) != 0)) 440 | { 441 | // Retrieve the data from the peripheral 442 | if (read_serial(rx_data, &byte_counter)) 443 | { 444 | // Generate our reply 445 | generate_reply(); 446 | 447 | // Enable transmit interrupt so it sends back the data 448 | USART_CR1(USART1) |= USART_CR1_TXEIE; 449 | } 450 | } 451 | 452 | // Check if we were called because of TXE 453 | if (((USART_CR1(USART1) & USART_CR1_TXEIE) != 0) && 454 | ((USART_ISR(USART1) & USART_ISR_TXE) != 0)) 455 | { 456 | int32_t data; 457 | 458 | data = ring_read_ch(&output_ring, NULL); 459 | 460 | if (data == -1) 461 | { 462 | // Disable the TXE interrupt as we don't need it anymore 463 | USART_CR1(USART1) &= ~USART_CR1_TXEIE; 464 | } 465 | else 466 | { 467 | // Put data into the transmit register 468 | usart_send(USART1, data); 469 | } 470 | } 471 | } 472 | 473 | static void clock_setup(void) 474 | { 475 | // Enable 48 MHz high speed internal oscillator 476 | rcc_clock_setup_in_hsi_out_48mhz(); 477 | 478 | // Enable GPIOA and GPIOB clocks 479 | rcc_periph_clock_enable(RCC_GPIOA); 480 | rcc_periph_clock_enable(RCC_GPIOB); 481 | 482 | // Enable clocks for USART1 483 | rcc_periph_clock_enable(RCC_USART1); 484 | 485 | // Enable clocks for TIM1, TIM2 and TIM3 486 | rcc_periph_clock_enable(RCC_TIM1); 487 | rcc_periph_clock_enable(RCC_TIM2); 488 | rcc_periph_clock_enable(RCC_TIM3); 489 | 490 | // Enable clocks for EXTI 491 | rcc_periph_clock_enable(RCC_SYSCFG_COMP); 492 | 493 | // Enable clocks for ADC1 494 | rcc_periph_clock_enable(RCC_ADC1); 495 | 496 | // Enable clocks for DMA 497 | rcc_periph_clock_enable(RCC_DMA); 498 | } 499 | 500 | static void usart_setup(void) 501 | { 502 | // Initialize output ring buffer 503 | ring_init(&output_ring, output_ring_buffer, SHD_BUFFER_SIZE); 504 | 505 | // Setup GPIO pins for USART1 transmit and receive 506 | gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO9 | GPIO10); 507 | 508 | // Setup USART1 TX pin and RX pin as alternate function 509 | gpio_set_af(GPIOA, GPIO_AF1, GPIO9 | GPIO10); 510 | 511 | // Enable the USART1 interrupt 512 | nvic_set_priority(NVIC_USART1_IRQ, 255); 513 | nvic_enable_irq(NVIC_USART1_IRQ); 514 | 515 | // Setup USART1 parameters 516 | usart_set_baudrate(USART1, 115200); 517 | usart_set_databits(USART1, 8); 518 | usart_set_parity(USART1, USART_PARITY_NONE); 519 | usart_set_stopbits(USART1, USART_CR2_STOPBITS_1); 520 | usart_set_mode(USART1, USART_MODE_TX_RX); 521 | usart_set_flow_control(USART1, USART_FLOWCONTROL_NONE); 522 | 523 | // Enable USART1 receive interrupt 524 | USART_CR1(USART1) |= USART_CR1_RXNEIE; 525 | 526 | // Finally enable the USART 527 | usart_enable(USART1); 528 | } 529 | 530 | static void gpio_setup(void) 531 | { 532 | // Setup GPIO pins for MOSFET outputs on both HW1 and HW2 533 | gpio_mode_setup(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, 534 | GPIO8 | GPIO11 | GPIO12); 535 | gpio_set(GPIOA, GPIO11); 536 | 537 | // Setup GPIO pins for test pads 538 | // gpio_mode_setup(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO6 | GPIO7); 539 | 540 | // Setup GPIO pins for PWM inputs from HLW8012 as TIM2_CH1 and TIM2_CH2 541 | // alternate functions 542 | gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLDOWN, GPIO0 | GPIO1); 543 | gpio_set_af(GPIOA, GPIO_AF2, GPIO0 | GPIO1); 544 | 545 | // Setup GPIO pins for SEL pin on HLW8012 546 | gpio_mode_setup(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO8); 547 | gpio_set_output_options(GPIOB, GPIO_OTYPE_OD, GPIO_OSPEED_2MHZ, GPIO8); 548 | // Start in voltage measuring mode 549 | gpio_set(GPIOB, GPIO8); 550 | 551 | // Setup GPIO pins for mains detect pins 552 | gpio_mode_setup(GPIOB, GPIO_MODE_INPUT, GPIO_PUPD_PULLDOWN, GPIO2); 553 | gpio_mode_setup(GPIOB, GPIO_MODE_INPUT, GPIO_PUPD_PULLDOWN, GPIO7); 554 | 555 | // Setup analog GPIO pins 556 | gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO3); // ADC_IN3 557 | gpio_mode_setup(GPIOB, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO0); // ADC_IN8 558 | } 559 | 560 | static void systick_setup(void) 561 | { 562 | // Setup clock as source external reference clock 563 | systick_set_clocksource(STK_CSR_CLKSOURCE_EXT); 564 | 565 | // Clear counter so it starts right away 566 | STK_CVR = 0; 567 | 568 | // Divide systick clock down to milliseconds 569 | systick_set_reload(rcc_ahb_frequency / 8 / 10000); 570 | 571 | // Enable systick interrupt 572 | systick_interrupt_enable(); 573 | 574 | // Finally enable the systick timer 575 | systick_counter_enable(); 576 | } 577 | 578 | static void timer1_setup(void) 579 | { 580 | // Disable and reset timer 1 581 | timer_disable_counter(TIM1); 582 | rcc_periph_reset_pulse(RST_TIM1); 583 | 584 | // Enable timer 1 interupt 585 | nvic_enable_irq(NVIC_TIM1_CC_IRQ); 586 | 587 | // Initialise timer 1 as up counting on clock edge 588 | timer_set_mode(TIM1, TIM_CR1_CKD_CK_INT, TIM_CR1_CMS_EDGE, TIM_CR1_DIR_UP); 589 | 590 | // Divide systick clock down to 100 kHz 591 | timer_set_prescaler(TIM1, 480); 592 | 593 | // Only needed for advanced timers: 594 | // timer_set_repetition_counter(TIM1, 0); 595 | timer_enable_break_main_output(TIM1); 596 | 597 | // Configure timer 1 with preload and continuous mode 598 | timer_enable_preload(TIM1); 599 | timer_continuous_mode(TIM1); 600 | timer_set_period(TIM1, 65535); 601 | 602 | timer_enable_irq(TIM1, TIM_DIER_CC1IE); 603 | timer_enable_irq(TIM1, TIM_DIER_CC2IE); 604 | 605 | // Finally enable timer 1 606 | timer_enable_counter(TIM1); 607 | } 608 | 609 | static void timer2_setup(void) 610 | { 611 | // Disable and reset timer 2 612 | timer_disable_counter(TIM2); 613 | rcc_periph_reset_pulse(RST_TIM2); 614 | 615 | // Enable timer 2 interupt 616 | nvic_enable_irq(NVIC_TIM2_IRQ); 617 | 618 | // Initialise timer 2 as up counting on clock edge 619 | timer_set_mode(TIM2, TIM_CR1_CKD_CK_INT, TIM_CR1_CMS_EDGE, TIM_CR1_DIR_UP); 620 | 621 | // Configure timer 2 with preload and continuous mode 622 | timer_set_prescaler(TIM2, 48); 623 | timer_enable_preload(TIM2); 624 | timer_continuous_mode(TIM2); 625 | 626 | // Clock timer 2 with internal clock, don't use external trigger 627 | timer_slave_set_mode(TIM2, TIM_SMCR_SMS_OFF); 628 | 629 | // Setup channel 1, PA0 630 | timer_ic_set_input(TIM2, TIM_IC1, TIM_IC_IN_TI1); 631 | timer_ic_set_filter(TIM2, TIM_IC1, TIM_IC_CK_INT_N_2); 632 | timer_ic_set_prescaler(TIM2, TIM_IC1, TIM_IC_PSC_OFF); 633 | timer_disable_oc_output(TIM2, TIM_OC1); 634 | timer_set_oc_polarity_high(TIM2, TIM_OC1); 635 | timer_enable_oc_output(TIM2, TIM_OC1); 636 | timer_ic_enable(TIM2, TIM_IC1); 637 | timer_enable_irq(TIM2, TIM_DIER_CC1IE); 638 | 639 | // Setup channel 2, PA1 640 | timer_ic_set_input(TIM2, TIM_IC2, TIM_IC_IN_TI2); 641 | timer_ic_set_filter(TIM2, TIM_IC2, TIM_IC_CK_INT_N_2); 642 | timer_ic_set_prescaler(TIM2, TIM_IC2, TIM_IC_PSC_OFF); 643 | timer_disable_oc_output(TIM2, TIM_OC2); 644 | timer_set_oc_polarity_high(TIM2, TIM_OC2); 645 | timer_enable_oc_output(TIM2, TIM_OC2); 646 | timer_ic_enable(TIM2, TIM_IC2); 647 | timer_enable_irq(TIM2, TIM_DIER_CC2IE); 648 | 649 | // Set timer so it resets right away 650 | timer_set_counter(TIM2, 0xffffffff); 651 | 652 | // Finally enable timer 2 653 | timer_enable_counter(TIM2); 654 | } 655 | 656 | static void timer3_setup(void) 657 | { 658 | // Disable and reset timer 3 659 | timer_disable_counter(TIM3); 660 | rcc_periph_reset_pulse(RST_TIM3); 661 | 662 | // Enable timer 3 interupt 663 | nvic_enable_irq(NVIC_TIM3_IRQ); 664 | 665 | // Initialise timer 3 as up counting on clock edge 666 | timer_set_mode(TIM3, TIM_CR1_CKD_CK_INT, TIM_CR1_CMS_EDGE, TIM_CR1_DIR_UP); 667 | 668 | // Divide systick clock down to 100 kHz 669 | timer_set_prescaler(TIM3, 480); 670 | 671 | // Configure timer 3 with preload and continuous mode 672 | timer_enable_preload(TIM3); 673 | timer_continuous_mode(TIM3); 674 | timer_set_period(TIM3, 10); 675 | timer_set_oc_value(TIM3, TIM_OC1, 5); 676 | 677 | // timer_set_master_mode(TIM3, TIM_CR2_MMS_UPDATE); 678 | 679 | timer_enable_irq(TIM3, TIM_DIER_CC1IE); 680 | 681 | // Finally enable timer 3 682 | timer_enable_counter(TIM3); 683 | } 684 | 685 | static void exti_setup(void) 686 | { 687 | // Enable external interrupts 2 and 7 688 | nvic_enable_irq(NVIC_EXTI2_3_IRQ); 689 | nvic_enable_irq(NVIC_EXTI4_15_IRQ); 690 | 691 | // Configure the EXTI subsystem 692 | exti_select_source(EXTI2, GPIOB); 693 | exti_select_source(EXTI7, GPIOB); 694 | 695 | exti_set_trigger(EXTI2, EXTI_TRIGGER_BOTH); 696 | exti_set_trigger(EXTI7, EXTI_TRIGGER_BOTH); 697 | 698 | // Finally enable EXTI2 and EXTI7 699 | exti_enable_request(EXTI2); 700 | #ifdef SHD_NO_NEUTRAL 701 | exti_enable_request(EXTI7); 702 | #endif 703 | } 704 | 705 | static void adc_setup(void) 706 | { 707 | adc_power_off(ADC1); 708 | 709 | adc_set_operation_mode(ADC1, ADC_MODE_SCAN); 710 | adc_set_single_conversion_mode(ADC1); 711 | adc_disable_external_trigger_regular(ADC1); 712 | // TRG1 = TIM1_CC4 713 | // adc_enable_external_trigger_regular(ADC1, ADC_CFGR1_EXTSEL_VAL(3), ADC_CFGR1_EXTEN_RISING_EDGE); 714 | adc_set_right_aligned(ADC1); 715 | adc_enable_temperature_sensor(); 716 | adc_set_sample_time_on_all_channels(ADC1, ADC_SMPTIME_071DOT5); 717 | adc_set_regular_sequence(ADC1, ADC_NUM_CHANNELS, adc_channels); 718 | adc_set_resolution(ADC1, ADC_RESOLUTION_12BIT); 719 | adc_disable_analog_watchdog(ADC1); 720 | 721 | adc_calibrate(ADC1); 722 | 723 | // Configure DMA for ADC 724 | // nvic_enable_irq(NVIC_DMA1_CHANNEL1_IRQ); 725 | 726 | dma_channel_reset(DMA1, DMA_CHANNEL1); 727 | dma_set_priority(DMA1, DMA_CHANNEL1, DMA_CCR_PL_LOW); 728 | dma_set_memory_size(DMA1, DMA_CHANNEL1, DMA_CCR_MSIZE_16BIT); 729 | dma_set_peripheral_size(DMA1, DMA_CHANNEL1, DMA_CCR_PSIZE_16BIT); 730 | dma_enable_memory_increment_mode(DMA1, DMA_CHANNEL1); 731 | dma_enable_circular_mode(DMA1, DMA_CHANNEL1); 732 | dma_set_read_from_peripheral(DMA1, DMA_CHANNEL1); 733 | dma_set_peripheral_address(DMA1, DMA_CHANNEL1, (uint32_t) &ADC1_DR); 734 | // The array adc_data[] is filled with the waveform data to be output 735 | dma_set_memory_address(DMA1, DMA_CHANNEL1, (uint32_t) adc_data); 736 | dma_set_number_of_data(DMA1, DMA_CHANNEL1, ADC_NUM_CHANNELS); 737 | // dma_enable_transfer_complete_interrupt(DMA1, DMA_CHANNEL1); 738 | dma_enable_channel(DMA1, DMA_CHANNEL1); 739 | 740 | adc_enable_dma(ADC1); 741 | 742 | adc_power_on(ADC1); 743 | 744 | adc_start_conversion_regular(ADC1); 745 | } 746 | 747 | static void mosfet_on(void) { 748 | // Turn on the MOSFETs 749 | if(leading_edge != (bool)(hw_version == dimmer1)) 750 | { 751 | gpio_set(GPIOA, GPIO8); 752 | gpio_set(GPIOA, GPIO11); 753 | gpio_set(GPIOA, GPIO12); 754 | } 755 | else 756 | { 757 | gpio_clear(GPIOA, GPIO8); 758 | gpio_clear(GPIOA, GPIO11); 759 | gpio_clear(GPIOA, GPIO12); 760 | } 761 | } 762 | 763 | static void mosfet_off(void) { 764 | if(leading_edge != (bool)(hw_version == dimmer1)) 765 | { 766 | gpio_clear(GPIOA, GPIO8); 767 | gpio_clear(GPIOA, GPIO11); 768 | gpio_clear(GPIOA, GPIO12); 769 | } 770 | else 771 | { 772 | gpio_set(GPIOA, GPIO8); 773 | gpio_set(GPIOA, GPIO11); 774 | gpio_set(GPIOA, GPIO12); 775 | } 776 | } 777 | 778 | static void on_trigger(uint32_t gpio_bank, uint32_t gpio_pin) 779 | { 780 | // Have we triggered too early? If so return straight away 781 | if (timer_get_counter(TIM1) < 750) 782 | return; 783 | 784 | if (gpio_get(gpio_bank, gpio_pin)) 785 | line_freq_counter = timer_get_counter(TIM1); 786 | else 787 | { 788 | line_freq_counter = (line_freq_counter + timer_get_counter(TIM1)) / 2; 789 | line_freq = line_freq - line_freq / 64 + line_freq_counter; 790 | } 791 | 792 | // Change ouput polarity if needed depending on leading edge mode 793 | brightness = brightness_req * max_brightness / 1000; 794 | brightness = leading_edge ? 1000 - brightness : brightness; 795 | 796 | // Adjust the brigtness value according to the mains frequency 797 | brightness_adj = brightness * line_freq / 64000; 798 | if (brightness_adj < low_brightness_threshold) 799 | { 800 | timer_set_oc_value(TIM1, TIM_OC1, low_brightness_threshold); 801 | timer_set_oc_value(TIM1, TIM_OC2, low_brightness_threshold - brightness_adj); 802 | } 803 | else if (brightness_adj > 0) 804 | { 805 | timer_set_oc_value(TIM1, TIM_OC1, brightness_adj); 806 | timer_set_oc_value(TIM1, TIM_OC2, 0); 807 | mosfet_on(); 808 | } 809 | timer_set_counter(TIM1, 0); 810 | 811 | // Do the rest after setting up the timer, as this may cause jitter 812 | 813 | // Update only once per full line cycle 814 | if (gpio_get(gpio_bank, gpio_pin)) 815 | { 816 | current_max_period = current_total / adc_count; 817 | current_total = 0; 818 | current_total_mag_period = current_total_mag / adc_count; 819 | current_total_mag = 0; 820 | voltage_max_period = voltage_total / adc_count; 821 | voltage_total = 0; 822 | adc_count = 0; 823 | } 824 | } 825 | 826 | int main(void) 827 | { 828 | // Setup all subsystems 829 | // Setup internal oscillator and peripheral clocks 830 | clock_setup(); 831 | // Setup GPIO input and output modes 832 | gpio_setup(); 833 | // Setup ADC for measuring voltage/current on HW 2 834 | adc_setup(); 835 | // Setup UART for comunication with ESP8266 836 | usart_setup(); 837 | // Setup timer 1 for PWM outout controling output MOSFETs 838 | timer1_setup(); 839 | // Setup timer 2 for measuring voltage/power data from HLW8012 840 | timer2_setup(); 841 | // Setup timer 3 for measuring voltage/current data ADC 842 | timer3_setup(); 843 | // Setup external trigger for synchronising PWM output with zero-crossing 844 | // point of mains voltage 845 | exti_setup(); 846 | // Setup systick for general timekeeping 847 | systick_setup(); 848 | 849 | // Keep doing this forever 850 | while (1) 851 | __asm__("nop"); 852 | 853 | return 0; 854 | } 855 | 856 | // Interupts 857 | 858 | void sys_tick_handler(void) 859 | { 860 | // Increment systick value 861 | systick_ms++; 862 | } 863 | 864 | void tim1_cc_isr(void) 865 | { 866 | if (timer_get_flag(TIM1, TIM_SR_CC1IF)) 867 | { 868 | // Reset interupt flag 869 | timer_clear_flag(TIM1, TIM_SR_CC1IF); 870 | 871 | // No need to turn off if brightness is full 872 | if (brightness == 1000) 873 | return; 874 | 875 | // Turn off the MOSFETs 876 | mosfet_off(); 877 | } 878 | 879 | if (timer_get_flag(TIM1, TIM_SR_CC2IF)) 880 | { 881 | // Reset interupt flag 882 | timer_clear_flag(TIM1, TIM_SR_CC2IF); 883 | if (brightness == 0) 884 | return; 885 | mosfet_on(); 886 | } 887 | } 888 | 889 | void tim2_isr(void) 890 | { 891 | // Check which capture/compare interrupt triggered 892 | if (timer_get_flag(TIM2, TIM_SR_CC1IF)) 893 | { 894 | // CF1 triggered 895 | // Reset interupt flag 896 | timer_clear_flag(TIM2, TIM_SR_CC1IF); 897 | 898 | hw_version = dimmer1; 899 | max_brightness = 1000; 900 | 901 | // Calculate period of CF1 signal 902 | tim_ccr1_now = TIM_CCR1(TIM2); 903 | uint32_t pulse_width = tim_ccr1_now - tim_ccr1_last; 904 | tim_ccr1_last = tim_ccr1_now; 905 | uint32_t now = systick_ms; 906 | 907 | // Update value for voltage or current reading 908 | if ((last_cf1_interrupt != first_cf1_interrupt) && 909 | (cf1_pulse_count > SHD_CF1_PULSE_MIN)) 910 | { 911 | if (current_mode) 912 | current_pulse_width = pulse_width; 913 | else 914 | voltage_pulse_width = pulse_width; 915 | } 916 | 917 | cf1_pulse_count++; 918 | 919 | // Check if it is time to swap between measuring voltage and current 920 | if (((now - first_cf1_interrupt) > SHD_CF1_PULSE_TIMEOUT) || 921 | (cf1_pulse_count > SHD_CF1_PULSE_MAX)) 922 | { 923 | // Check the other current mode instead 924 | current_mode = !current_mode; 925 | if (current_mode) 926 | gpio_clear(GPIOB, GPIO8); 927 | else 928 | gpio_set(GPIOB, GPIO8); 929 | 930 | first_cf1_interrupt = now; 931 | cf1_pulse_count = 0; 932 | } 933 | 934 | last_cf1_interrupt = now; 935 | } 936 | if (timer_get_flag(TIM2, TIM_SR_CC2IF)) 937 | { 938 | // CF triggered 939 | // Reset interupt flag 940 | timer_clear_flag(TIM2, TIM_SR_CC2IF); 941 | 942 | // Calculate period of CF signal 943 | tim_ccr2_now = TIM_CCR2(TIM2); 944 | power_pulse_width = tim_ccr2_now - tim_ccr2_last; 945 | tim_ccr2_last = tim_ccr2_now; 946 | 947 | ++power_pulse_count; 948 | last_cf_interrupt = systick_ms; 949 | } 950 | } 951 | 952 | void tim3_isr(void) 953 | { 954 | // Check if capture/compare interrupt triggered 955 | if (timer_get_flag(TIM3, TIM_SR_CC1IF)) 956 | { 957 | // Reset interupt flag 958 | timer_clear_flag(TIM3, TIM_SR_CC1IF); 959 | 960 | // Check if ADC has finished converting 961 | if (dma_get_interrupt_flag(DMA1, DMA_CHANNEL1, DMA_TCIF)) 962 | { 963 | dma_clear_interrupt_flags(DMA1, DMA_CHANNEL1, DMA_TCIF); 964 | 965 | voltage_total += adc_data[0]; 966 | current_total += adc_data[1]; 967 | if (adc_data[1] > current_max_period) 968 | current_total_mag += adc_data[1] - current_max_period; 969 | else 970 | current_total_mag += current_max_period - adc_data[1]; 971 | adc_count++; 972 | 973 | adc_start_conversion_regular(ADC1); 974 | } 975 | } 976 | } 977 | 978 | void exti2_3_isr(void) 979 | { 980 | if (!exti_get_flag_status(EXTI2)) 981 | return; 982 | 983 | // Reset interupt request 984 | exti_reset_request(EXTI2); 985 | 986 | on_trigger(GPIOB, GPIO2); 987 | } 988 | 989 | void exti4_15_isr(void) 990 | { 991 | if (!exti_get_flag_status(EXTI7)) 992 | return; 993 | 994 | // Reset interupt request 995 | exti_reset_request(EXTI7); 996 | 997 | // We must be on dimmer2 998 | // Ignore EXTI2 interupts so we don't trigger twice 999 | exti_disable_request(EXTI2); 1000 | 1001 | on_trigger(GPIOB, GPIO7); 1002 | } 1003 | --------------------------------------------------------------------------------