Merge pull request #726 from recrof/xiao_rp2040_refactor

tidy up xiao rp2040 variant

variants/xiao_rp2040/XiaoRP2040Board.cpp

@@ -0,0 +1,30 @@
+#include "XiaoRP2040Board.h"
+
+#include <Arduino.h>
+#include <Wire.h>
+
+void XiaoRP2040Board::begin() {
+  // for future use, sub-classes SHOULD call this from their begin()
+  startup_reason = BD_STARTUP_NORMAL;
+
+#ifdef P_LORA_TX_LED
+  pinMode(P_LORA_TX_LED, OUTPUT);
+#endif
+
+#ifdef PIN_VBAT_READ
+  pinMode(PIN_VBAT_READ, INPUT);
+#endif
+
+#if defined(PIN_BOARD_SDA) && defined(PIN_BOARD_SCL)
+  Wire.setSDA(PIN_BOARD_SDA);
+  Wire.setSCL(PIN_BOARD_SCL);
+#endif
+
+  Wire.begin();
+
+  delay(10); // give sx1262 some time to power up
+}
+
+bool XiaoRP2040Board::startOTAUpdate(const char *id, char reply[]) {
+  return false;
+}

variants/xiao_rp2040/XiaoRP2040Board.h

@@ -0,0 +1,60 @@
+#pragma once
+
+#include <Arduino.h>
+#include <MeshCore.h>
+
+/*
+ * This board has no built-in way to read battery voltage.
+ * Nevertheless it's very easy to make it work, you only require two 1% resistors.
+ * If your using the WIO SX1262 Addon for xaio, make sure you dont connect D0!
+ *
+ *    BAT+ -----+
+ *              |
+ *       VSYS --+ -/\/\/\/\- --+
+ *                   200k      |
+ *                             +-- D0
+ *                             |
+ *        GND --+ -/\/\/\/\- --+
+ *              |    100k
+ *    BAT- -----+
+ */
+#define PIN_VBAT_READ     26 // D0
+#define BATTERY_SAMPLES   8
+#define ADC_MULTIPLIER    (3.0f * 3.3f * 1000)
+
+class XiaoRP2040Board : public mesh::MainBoard {
+protected:
+  uint8_t startup_reason;
+
+public:
+  void begin();
+  uint8_t getStartupReason() const override { return startup_reason; }
+
+#ifdef P_LORA_TX_LED
+  void onBeforeTransmit() override { digitalWrite(P_LORA_TX_LED, HIGH); }
+  void onAfterTransmit() override { digitalWrite(P_LORA_TX_LED, LOW); }
+#endif
+
+
+  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 "Xiao RP2040"; }
+
+  void reboot() override { rp2040.reboot(); }
+
+  bool startOTAUpdate(const char *id, char reply[]) override;
+};

variants/xiao_rp2040/platformio.ini

@@ -1,27 +1,32 @@
 [Xiao_rp2040]
 extends = rp2040_base
-
 board = seeed_xiao_rp2040
 board_build.filesystem_size = 0.5m
-
 build_flags = ${rp2040_base.build_flags}
   -I variants/xiao_rp2040
   -D SX126X_CURRENT_LIMIT=140
   -D RADIO_CLASS=CustomSX1262
   -D WRAPPER_CLASS=CustomSX1262Wrapper
-  -D LORA_TX_POWER=22
+  -D P_LORA_DIO_1=27 ; D1
+  -D P_LORA_NSS=6  ; D4
+  -D P_LORA_RESET=28 ; D2
+  -D P_LORA_BUSY=29 ; D3
+  -D P_LORA_TX_LED=17
+  -D SX126X_RXEN=7  ; D5
+  -D SX126X_TXEN=RADIOLIB_NC
+  -D SX126X_DIO2_AS_RF_SWITCH=true
+  -D SX126X_DIO3_TCXO_VOLTAGE=1.8
   -D SX126X_RX_BOOSTED_GAIN=1
+  -D LORA_TX_POWER=22
 ; Debug options
   ; -D DEBUG_RP2040_WIRE=1
   ; -D DEBUG_RP2040_SPI=1
   ; -D DEBUG_RP2040_CORE=1
   ; -D RADIOLIB_DEBUG_SPI=1
   ; -D DEBUG_RP2040_PORT=Serial
-
 build_src_filter = ${rp2040_base.build_src_filter}
-  +<helpers/rp2040/XiaoRP2040Board.cpp>
+  +<XiaoRP2040Board.cpp>
   +<../variants/xiao_rp2040>
-
 lib_deps = ${rp2040_base.lib_deps}
 
 [env:Xiao_rp2040_Repeater]

variants/xiao_rp2040/target.h

@@ -7,7 +7,7 @@
 #include <helpers/radiolib/CustomSX1262Wrapper.h>
 #include <helpers/radiolib/RadioLibWrappers.h>
 #include <helpers/SensorManager.h>
-#include <helpers/rp2040/XiaoRP2040Board.h>
+#include <XiaoRP2040Board.h>
 
 extern XiaoRP2040Board board;
 extern WRAPPER_CLASS radio_driver;