Added a few info in CONTRIBUTING.md
Tried to improve the documentation for futur contributor. Notably added instruction to also update the Makefile, ad an entry to Utilities.h which I had to discover by trial and error
This commit is contained in:
Nathann Morand
@@ -1,7 +1,8 @@
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# Board support
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If you wish to add support for a specific board to the project, all you have to do (if it's ESP32 or nRF52), is write an additional entry for `Boards.h`.
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If you wish to add support for a specific board to the project, all you have to do (if it's ESP32 or nRF52), is write an additional entry for `Boards.h` and `Utilities.h` and the `Makefile` .
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This entry should include, at a minimum, the following:
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### Boards.h
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This entry in `Boards.h` should include, at a minimum, the following:
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* whether the device has bluetooth / BLE
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* whether the device has a PMU
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* whether the device has an EEPROM (false in all cases for nRF52, true for ESP32)
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@@ -10,7 +11,47 @@ This entry should include, at a minimum, the following:
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* whether the modem has a busy pin
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* RX and TX leds (preferably LEDs of different colours)
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# Check this area...
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here is an example :
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the new entry to add whoses number should not be used aldready
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```
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#define BOARD_GENERIC_ESP32_C3 0x3B
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```
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and the board definition
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```
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#elif BOARD_MODEL == BOARD_GENERIC_ESP32_C3
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#define HAS_BLUETOOTH false
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#define HAS_CONSOLE true
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#define HAS_EEPROM true
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#define INTERFACE_COUNT 1
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const int pin_led_rx = 9;
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const int pin_led_tx = 8;
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const uint8_t interfaces[INTERFACE_COUNT] = {SX127X};
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const bool interface_cfg[INTERFACE_COUNT][3] = {
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// SX127X
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{
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true, // DEFAULT_SPI
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false, // HAS_TCXO
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false // DIO2_AS_RF_SWITCH
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},
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};
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const int8_t interface_pins[INTERFACE_COUNT][10] = {
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// SX127X
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{
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7, // pin_ss
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4, // pin_sclk
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6, // pin_mosi
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5, // pin_miso
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-1, // pin_busy
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2, // pin_dio
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3, // pin_reset
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-1, // pin_txen
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-1, // pin_rxen
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-1 // pin_tcxo_enable
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}
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};
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```
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see https://github.com/espressif/arduino-esp32/blob/master/cores/esp32/esp32-hal-spi.h#L39
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Effectively, there are multiple SPI buses we can map to pins on these
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devices (including the hardware SPI bus)
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@@ -98,6 +139,56 @@ An example of an entry using the SX1280 modem can be seen below:
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const int pin_led_tx = 6;
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```
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### Utilities.h
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you should add something like this to drive the led :
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```
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#elif BOARD_MODEL == BOARD_GENERIC_ESP32_C3
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void led_rx_on() { digitalWrite(pin_led_rx, HIGH); }
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void led_rx_off() { digitalWrite(pin_led_rx, LOW); }
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void led_tx_on() { digitalWrite(pin_led_tx, HIGH); }
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void led_tx_off() { digitalWrite(pin_led_tx, LOW); }
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```
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### Makefile
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one entry to build the firmware
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```
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firmware-genericesp32c3:
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arduino-cli compile --fqbn esp32:esp32:esp32c3:CDCOnBoot=cdc -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x3B\""
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```
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pay attention the the DBOARD_MODEL= value as you must choose an unsigned one for your board.
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one entry to upload the firmware to the board
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```
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upload-genericesp32c3:
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arduino-cli upload -p /dev/ttyACM0 --fqbn esp32:esp32:esp32c3
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@sleep 1
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rnodeconf /dev/ttyACM0 --firmware-hash $$(./partition_hashes ./build/esp32.esp32.esp32c3/RNode_Firmware_CE.ino.bin)
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@sleep 3
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python ./Release/esptool/esptool.py --chip esp32c3 --port /dev/ttyACM0 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size 4MB 0x210000 ./Release/console_image.bin
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```
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and finally one entry to make a realease for the firmware
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```
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release-genericesp32c3:
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arduino-cli compile --fqbn esp32:esp32:esp32c3:CDCOnBoot=cdc -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x3B\""
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cp ~/.arduino15/packages/esp32/hardware/esp32/$(ESP_IDF_VER)/tools/partitions/boot_app0.bin build/rnode_firmware_esp32_generic-c3.boot_app0
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cp build/esp32.esp32.esp32c3/RNode_Firmware_CE.ino.bin build/rnode_firmware_esp32c3_generic.bin
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cp build/esp32.esp32.esp32c3/RNode_Firmware_CE.ino.bootloader.bin build/rnode_firmware_esp32c3_generic.bootloader
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cp build/esp32.esp32.esp32c3/RNode_Firmware_CE.ino.partitions.bin build/rnode_firmware_esp32c3_generic.partitions
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zip --junk-paths ./Release/rnode_firmware_esp32c3_generic.zip ./Release/esptool/esptool.py ./Release/console_image.bin build/rnode_firmware_esp32c3_generic.boot_app0 build/rnode_firmware_esp32c3_generic.bin build/rnode_firmware_esp32c3_generic.bootloader build/rnode_firmware_esp32c3_generic.partitions
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rm -r build
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```
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dont forget to add this entry to the `release-all` action.
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```
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release-all: console-site spiffs-image release-tbeam release-tbeam_sx1262 release-lora32_v10 release-lora32_v20 release-lora32_v21 release-lora32_v10_extled release-lora32_v20_extled release-lora32_v21_extled release-lora32_v21_tcxo release-featheresp32 release-genericesp32 release-genericesp32c3 release-heltec32_v2 release-heltec32_v3 release-heltec32_v2_extled release-rnode_ng_20 release-rnode_ng_21 release-t3s3 release-hashe
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```
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Please submit this, and any other support in different areas of the project your board may require, as a PR for my consideration.
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# Feature request
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