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;
+}