Waveshare RP2040-LoRa board support

src/helpers/rp2040/WaveshareBoard.cpp

@@ -0,0 +1,29 @@
+#include "WaveshareBoard.h"
+
+#include <Arduino.h>
+#include <Wire.h>
+
+void WaveshareBoard::begin() {
+  // for future use, sub-classes SHOULD call this from their begin()
+  startup_reason = BD_STARTUP_NORMAL;
+
+#ifdef PIN_LED_BUILTIN
+  pinMode(PIN_LED_BUILTIN, OUTPUT);
+#endif
+
+#ifdef PIN_VBAT_READ
+  pinMode(PIN_VBAT_READ, INPUT);
+#endif
+
+#if defined(PIN_BOARD_SDA) && defined(PIN_BOARD_SCL)
+  Wire.setPins(PIN_BOARD_SDA, PIN_BOARD_SCL);
+#endif
+
+  Wire.begin();
+
+  delay(10); // give sx1262 some time to power up
+}
+
+bool WaveshareBoard::startOTAUpdate(const char *id, char reply[]) {
+  return false;
+}

src/helpers/rp2040/WaveshareBoard.h

@@ -0,0 +1,65 @@
+#pragma once
+
+#include <Arduino.h>
+#include <MeshCore.h>
+
+// LoRa radio module pins for Waveshare RP2040-LoRa-HF/LF
+// https://files.waveshare.com/wiki/RP2040-LoRa/Rp2040-lora-sch.pdf
+
+#define P_LORA_DIO_1             16
+#define P_LORA_NSS               13 // CS
+#define P_LORA_RESET             23
+#define P_LORA_BUSY              18
+#define P_LORA_SCLK              14
+#define P_LORA_MISO              24
+#define P_LORA_MOSI              15
+
+#define SX126X_DIO2_AS_RF_SWITCH true
+#define SX126X_DIO3_TCXO_VOLTAGE 0
+
+// built-ins
+#define PIN_LED_BUILTIN          25
+
+// This board has no built-in way to read battery voltage
+// #define PIN_VBAT_READ    26
+// #define BATTERY_SAMPLES  8
+// #define ADC_MULTIPLIER   (3.1 * 3.3 * 1000) // MT Uses 3.1
+
+class WaveshareBoard : public mesh::MainBoard {
+protected:
+  uint8_t startup_reason;
+
+public:
+  void begin();
+  uint8_t getStartupReason() const override { return startup_reason; }
+
+  void onBeforeTransmit() override {
+    digitalWrite(PIN_LED_BUILTIN, HIGH); // turn TX LED on
+  }
+
+  void onAfterTransmit() override {
+    digitalWrite(PIN_LED_BUILTIN, LOW); // turn TX LED off
+  }
+
+  uint16_t getBattMilliVolts() override {
+#if defined(PIN_VBAT_READ) && defined(ADC_MULTIPLIER)
+    analogReadResolution(12);
+
+    uint32_t raw = 0;
+    for (int i = 0; i < BATTERY_SAMPLES; i++) {
+      raw += analogRead(PIN_VBAT_READ);
+    }
+    raw = raw / BATTERY_SAMPLES;
+
+    return (ADC_MULTIPLIER * raw) / 4096;
+#else
+    return 0;
+#endif
+  }
+
+  const char *getManufacturerName() const override { return "Waveshare RP2040-LoRa"; }
+
+  void reboot() override { rp2040.reboot(); }
+
+  bool startOTAUpdate(const char *id, char reply[]) override;
+};