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Merge pull request #476 from WattleFoxxo/xiao-rp2040
Adds support for the XIAO-RP2040 board
2 parents cb423bc + d23378c commit 484b7b8

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‎src/helpers/rp2040/XiaoRP2040Board.cpp‎

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#include "XiaoRP2040Board.h"
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#include <Arduino.h>
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#include <Wire.h>
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void XiaoRP2040Board::begin() {
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// for future use, sub-classes SHOULD call this from their begin()
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startup_reason = BD_STARTUP_NORMAL;
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#ifdef P_LORA_TX_LED
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pinMode(P_LORA_TX_LED, OUTPUT);
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#endif
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#ifdef PIN_VBAT_READ
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pinMode(PIN_VBAT_READ, INPUT);
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#endif
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#if defined(PIN_BOARD_SDA) && defined(PIN_BOARD_SCL)
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Wire.setSDA(PIN_BOARD_SDA);
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Wire.setSCL(PIN_BOARD_SCL);
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#endif
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Wire.begin();
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delay(10); // give sx1262 some time to power up
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}
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bool XiaoRP2040Board::startOTAUpdate(const char *id, char reply[]) {
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return false;
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}

‎src/helpers/rp2040/XiaoRP2040Board.h‎

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#pragma once
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#include <Arduino.h>
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#include <MeshCore.h>
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// LoRa radio module pins for the Xiao RP2040
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// https://wiki.seeedstudio.com/XIAO-RP2040/
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#define P_LORA_DIO_1 27 // D1
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#define P_LORA_NSS 6 // D4
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#define P_LORA_RESET 28 // D2
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#define P_LORA_BUSY 29 // D3
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#define P_LORA_TX_LED 17
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#define SX126X_RXEN 7 // D5
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#define SX126X_TXEN -1
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#define SX126X_DIO2_AS_RF_SWITCH true
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#define SX126X_DIO3_TCXO_VOLTAGE 1.8
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/*
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* This board has no built-in way to read battery voltage.
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* Nevertheless it's very easy to make it work, you only require two 1% resistors.
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* If your using the WIO SX1262 Addon for xaio, make sure you dont connect D0!
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*
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* BAT+ -----+
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* |
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* VSYS --+ -/\/\/\/\- --+
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* 200k |
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* +-- D0
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* |
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* GND --+ -/\/\/\/\- --+
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* | 100k
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* BAT- -----+
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*/
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#define PIN_VBAT_READ 26 // D0
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#define BATTERY_SAMPLES 8
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#define ADC_MULTIPLIER (3.0f * 3.3f * 1000)
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class XiaoRP2040Board : public mesh::MainBoard {
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protected:
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uint8_t startup_reason;
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public:
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void begin();
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uint8_t getStartupReason() const override { return startup_reason; }
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#ifdef P_LORA_TX_LED
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void onBeforeTransmit() override { digitalWrite(P_LORA_TX_LED, HIGH); }
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void onAfterTransmit() override { digitalWrite(P_LORA_TX_LED, LOW); }
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#endif
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uint16_t getBattMilliVolts() override {
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#if defined(PIN_VBAT_READ) && defined(ADC_MULTIPLIER)
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analogReadResolution(12);
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uint32_t raw = 0;
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for (int i = 0; i < BATTERY_SAMPLES; i++) {
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raw += analogRead(PIN_VBAT_READ);
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}
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raw = raw / BATTERY_SAMPLES;
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return (ADC_MULTIPLIER * raw) / 4096;
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#else
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return 0;
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#endif
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}
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const char *getManufacturerName() const override { return "Xiao RP2040"; }
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void reboot() override { rp2040.reboot(); }
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bool startOTAUpdate(const char *id, char reply[]) override;
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};

‎variants/xiao_rp2040/platformio.ini‎

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[Xiao_rp2040]
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extends = rp2040_base
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board = seeed_xiao_rp2040
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board_build.filesystem_size = 0.5m
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build_flags = ${rp2040_base.build_flags}
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-I variants/xiao_rp2040
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-D SX126X_CURRENT_LIMIT=140
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-D RADIO_CLASS=CustomSX1262
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-D WRAPPER_CLASS=CustomSX1262Wrapper
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-D LORA_TX_POWER=22
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-D SX126X_RX_BOOSTED_GAIN=1
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; Debug options
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; -D DEBUG_RP2040_WIRE=1
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; -D DEBUG_RP2040_SPI=1
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; -D DEBUG_RP2040_CORE=1
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; -D RADIOLIB_DEBUG_SPI=1
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; -D DEBUG_RP2040_PORT=Serial
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build_src_filter = ${rp2040_base.build_src_filter}
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+<helpers/rp2040/XiaoRP2040Board.cpp>
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+<../variants/xiao_rp2040>
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lib_deps = ${rp2040_base.lib_deps}
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[env:Xiao_rp2040_Repeater]
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extends = Xiao_rp2040
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build_flags = ${Xiao_rp2040.build_flags}
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-D ADVERT_NAME='"Xiao Repeater"'
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-D ADVERT_LAT=0.0
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-D ADVERT_LON=0.0
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-D ADMIN_PASSWORD='"password"'
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-D MAX_NEIGHBOURS=8
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-D MESH_PACKET_LOGGING=1
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-D MESH_DEBUG=1
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build_src_filter = ${Xiao_rp2040.build_src_filter}
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+<../examples/simple_repeater>
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[env:Xiao_rp2040_room_server]
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extends = Xiao_rp2040
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build_flags = ${Xiao_rp2040.build_flags}
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-D ADVERT_NAME='"Xiao Room"'
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-D ADVERT_LAT=0.0
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-D ADVERT_LON=0.0
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-D ADMIN_PASSWORD='"password"'
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-D ROOM_PASSWORD='"hello"'
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; -D MESH_PACKET_LOGGING=1
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; -D MESH_DEBUG=1
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build_src_filter = ${Xiao_rp2040.build_src_filter}
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+<../examples/simple_room_server>
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[env:Xiao_rp2040_companion_radio_usb]
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extends = Xiao_rp2040
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build_flags = ${Xiao_rp2040.build_flags}
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-D MAX_CONTACTS=100
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-D MAX_GROUP_CHANNELS=8
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; NOTE: DO NOT ENABLE --> -D MESH_PACKET_LOGGING=1
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; NOTE: DO NOT ENABLE --> -D MESH_DEBUG=1
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build_src_filter = ${Xiao_rp2040.build_src_filter}
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+<../examples/companion_radio>
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lib_deps = ${Xiao_rp2040.lib_deps}
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densaugeo/base64 @ ~1.4.0
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; [env:Xiao_rp2040_companion_radio_ble]
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; extends = Xiao_rp2040
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; build_flags = ${Xiao_rp2040.build_flags}
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; -D MAX_CONTACTS=100
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; -D MAX_GROUP_CHANNELS=8
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; -D BLE_PIN_CODE=123456
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; -D BLE_DEBUG_LOGGING=1
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; ; -D MESH_PACKET_LOGGING=1
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; ; -D MESH_DEBUG=1
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; build_src_filter = ${Xiao_rp2040.build_src_filter}
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; +<../examples/companion_radio>
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; lib_deps = ${Xiao_rp2040.lib_deps}
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; densaugeo/base64 @ ~1.4.0
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; [env:Xiao_rp2040_companion_radio_wifi]
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; extends = Xiao_rp2040
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; build_flags = ${Xiao_rp2040.build_flags}
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; -D MAX_CONTACTS=100
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; -D MAX_GROUP_CHANNELS=8
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; -D WIFI_DEBUG_LOGGING=1
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; -D WIFI_SSID='"myssid"'
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; -D WIFI_PWD='"mypwd"'
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; ; -D MESH_PACKET_LOGGING=1
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; ; -D MESH_DEBUG=1
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; build_src_filter = ${Xiao_rp2040.build_src_filter}
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; +<../examples/companion_radio>
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; lib_deps = ${Xiao_rp2040.lib_deps}
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; densaugeo/base64 @ ~1.4.0
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[env:Xiao_rp2040_terminal_chat]
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extends = Xiao_rp2040
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build_flags = ${Xiao_rp2040.build_flags}
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-D MAX_CONTACTS=100
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-D MAX_GROUP_CHANNELS=1
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; -D MESH_PACKET_LOGGING=1
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; -D MESH_DEBUG=1
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build_src_filter = ${Xiao_rp2040.build_src_filter}
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+<../examples/simple_secure_chat/main.cpp>
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lib_deps = ${Xiao_rp2040.lib_deps}
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densaugeo/base64 @ ~1.4.0

‎variants/xiao_rp2040/target.cpp‎

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#include "target.h"
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#include <Arduino.h>
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#include <helpers/ArduinoHelpers.h>
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XiaoRP2040Board board;
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RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY);
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WRAPPER_CLASS radio_driver(radio, board);
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VolatileRTCClock fallback_clock;
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AutoDiscoverRTCClock rtc_clock(fallback_clock);
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SensorManager sensors;
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#ifndef LORA_CR
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#define LORA_CR 5
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#endif
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bool radio_init() {
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rtc_clock.begin(Wire);
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#ifdef SX126X_DIO3_TCXO_VOLTAGE
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float tcxo = SX126X_DIO3_TCXO_VOLTAGE;
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#else
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float tcxo = 1.6f;
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#endif
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int status = radio.begin(LORA_FREQ, LORA_BW, LORA_SF, LORA_CR, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 8, tcxo);
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if (status != RADIOLIB_ERR_NONE) {
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Serial.print("ERROR: radio init failed: ");
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Serial.println(status);
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return false; // fail
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}
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radio.setCRC(1);
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#ifdef SX126X_CURRENT_LIMIT
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radio.setCurrentLimit(SX126X_CURRENT_LIMIT);
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#endif
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#ifdef SX126X_DIO2_AS_RF_SWITCH
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radio.setDio2AsRfSwitch(SX126X_DIO2_AS_RF_SWITCH);
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#endif
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#ifdef SX126X_RX_BOOSTED_GAIN
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radio.setRxBoostedGainMode(SX126X_RX_BOOSTED_GAIN);
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#endif
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return true; // success
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}
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uint32_t radio_get_rng_seed() {
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return radio.random(0x7FFFFFFF);
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}
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void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
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radio.setFrequency(freq);
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radio.setSpreadingFactor(sf);
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radio.setBandwidth(bw);
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radio.setCodingRate(cr);
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}
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void radio_set_tx_power(uint8_t dbm) {
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radio.setOutputPower(dbm);
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}
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mesh::LocalIdentity radio_new_identity() {
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RadioNoiseListener rng(radio);
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return mesh::LocalIdentity(&rng); // create new random identity
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}

‎variants/xiao_rp2040/target.h‎

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#pragma once
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#define RADIOLIB_STATIC_ONLY 1
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#include <RadioLib.h>
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#include <helpers/AutoDiscoverRTCClock.h>
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#include <helpers/CustomSX1262Wrapper.h>
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#include <helpers/RadioLibWrappers.h>
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#include <helpers/SensorManager.h>
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#include <helpers/rp2040/XiaoRP2040Board.h>
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extern XiaoRP2040Board board;
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extern WRAPPER_CLASS radio_driver;
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extern AutoDiscoverRTCClock rtc_clock;
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extern SensorManager sensors;
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bool radio_init();
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uint32_t radio_get_rng_seed();
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void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
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void radio_set_tx_power(uint8_t dbm);
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mesh::LocalIdentity radio_new_identity();

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