feat: add M5Stack Unit C6L variant support

Add variant configuration for M5Stack Unit C6L (ESP32-C6, SX1262 LoRa,
SSD1306 64x48 SPI display). Includes:
- Board class with PI4IO I/O expander for LoRa RF control
- DIO flash mode fix for ESP32-C6 bootloader compatibility
- SSD1306 SPI display with custom minimal UITask for 64x48
- CustomSerialBLEInterface fix for correct BLE Connected status
- All 4 firmware environments: companion (USB/BLE), repeater, room server

src/helpers/esp32/SerialBLEInterface.cpp

@@ -1,5 +1,5 @@
 #include "SerialBLEInterface.h"
-#include "esp_mac.h"
+#include <esp_mac.h>
 
 // See the following for generating UUIDs:
 // https://www.uuidgenerator.net/

src/helpers/ui/DisplayDriver.h

@@ -3,6 +3,38 @@
 #include <stdint.h>
 #include <string.h>
 
+struct MarqueeScroller {
+  int offset = 0;
+  unsigned long next_time = 0;
+  bool paused = true;
+
+  void reset() {
+    offset = 0;
+    next_time = 0;
+    paused = true;
+  }
+
+  // Call once per loop iteration to advance the scroll.
+  // textW/displayW in pixels, now = millis().
+  void update(int textW, int displayW, unsigned long now,
+              unsigned long speed_ms = 150, unsigned long pause_ms = 2000) {
+    int maxScroll = textW - displayW;
+    if (maxScroll <= 0) { offset = 0; return; }
+    if (now < next_time) return;
+    if (paused) {
+      paused = false;
+      next_time = now + pause_ms;
+    } else {
+      offset++;
+      if (offset >= maxScroll) {
+        offset = 0;
+        paused = true;
+      }
+      next_time = now + speed_ms;
+    }
+  }
+};
+
 class DisplayDriver {
   int _w, _h;
 protected:

src/helpers/ui/SSD1306SPIDisplay.cpp

@@ -0,0 +1,120 @@
+#include "SSD1306SPIDisplay.h"
+
+// Check if SPI is ready (set by radio_init in target.cpp)
+#if defined(P_LORA_SCLK)
+  extern bool spi_initialized;
+#else
+  static bool spi_initialized = true;  // Assume ready if no custom SPI
+#endif
+
+bool SSD1306SPIDisplay::begin() {
+  // Defer actual initialization - SPI may not be ready yet
+  // Real init happens in lazyInit() on first use (after radio_init)
+  return true;
+}
+
+bool SSD1306SPIDisplay::lazyInit() {
+  if (_initialized) return true;
+  if (!spi_initialized) {
+    Serial.println("SSD1306: SPI not initialized yet");
+    return false;
+  }
+
+  Serial.println("SSD1306: Attempting display init...");
+  #ifdef DISPLAY_ROTATION
+  display.setRotation(DISPLAY_ROTATION);
+  #endif
+  // SPI is now initialized by radio_init()
+  // Pass periphBegin=false to skip spi.begin() since radio already did it
+  if (!display.begin(SSD1306_SWITCHCAPVCC, 0, true, false)) {
+    Serial.println("SSD1306: display.begin() FAILED");
+    return false;
+  }
+  Serial.println("SSD1306: display.begin() OK");
+
+  // Fix for 64x48 displays: Adafruit library lacks this case and defaults
+  // to comPins=0x02 (sequential). Displays taller than 32px need 0x12
+  // (alternative COM pin config) or the output is garbled.
+  #if defined(DISPLAY_WIDTH) && defined(DISPLAY_HEIGHT)
+  #if (DISPLAY_WIDTH == 64) && (DISPLAY_HEIGHT == 48)
+  display.ssd1306_command(SSD1306_SETCOMPINS);
+  display.ssd1306_command(0x12);
+  #endif
+  #endif
+
+  // Clear any garbage in the display buffer
+  display.clearDisplay();
+  display.display();
+  _initialized = true;
+  return true;
+}
+
+void SSD1306SPIDisplay::turnOn() {
+  if (!lazyInit()) return;
+  display.ssd1306_command(SSD1306_DISPLAYON);
+  _isOn = true;
+}
+
+void SSD1306SPIDisplay::turnOff() {
+  if (!lazyInit()) return;
+  display.ssd1306_command(SSD1306_DISPLAYOFF);
+  _isOn = false;
+}
+
+void SSD1306SPIDisplay::clear() {
+  if (!lazyInit()) return;
+  display.clearDisplay();
+  display.display();
+}
+
+void SSD1306SPIDisplay::startFrame(Color bkg) {
+  if (!lazyInit()) return;
+  display.clearDisplay();  // TODO: apply 'bkg'
+  _color = SSD1306_WHITE;
+  display.setTextColor(_color);
+  display.setFont(NULL);  // Default 6x8 font
+  display.setTextSize(1);
+  display.setTextWrap(false);
+  display.cp437(true);
+}
+
+void SSD1306SPIDisplay::setTextSize(int sz) {
+  display.setTextSize(sz);
+}
+
+void SSD1306SPIDisplay::setColor(Color c) {
+  _color = (c != 0) ? SSD1306_WHITE : SSD1306_BLACK;
+  display.setTextColor(_color);
+}
+
+void SSD1306SPIDisplay::setCursor(int x, int y) {
+  display.setCursor(x, y);
+}
+
+void SSD1306SPIDisplay::print(const char* str) {
+  display.print(str);
+}
+
+void SSD1306SPIDisplay::fillRect(int x, int y, int w, int h) {
+  display.fillRect(x, y, w, h, _color);
+}
+
+void SSD1306SPIDisplay::drawRect(int x, int y, int w, int h) {
+  display.drawRect(x, y, w, h, _color);
+}
+
+void SSD1306SPIDisplay::drawXbm(int x, int y, const uint8_t* bits, int w, int h) {
+  display.drawBitmap(x, y, bits, w, h, SSD1306_WHITE);
+}
+
+uint16_t SSD1306SPIDisplay::getTextWidth(const char* str) {
+  int16_t x1, y1;
+  uint16_t w, h;
+  display.getTextBounds(str, 0, 0, &x1, &y1, &w, &h);
+  return w;
+}
+
+void SSD1306SPIDisplay::endFrame() {
+  if (!_initialized) return;
+  display.display();
+}

src/helpers/ui/SSD1306SPIDisplay.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#include "DisplayDriver.h"
+#include <SPI.h>
+#include <Adafruit_GFX.h>
+#define SSD1306_NO_SPLASH
+#include <Adafruit_SSD1306.h>
+
+class SSD1306SPIDisplay : public DisplayDriver {
+  Adafruit_SSD1306 display;
+  bool _isOn;
+  bool _initialized;
+  uint8_t _color;
+
+  bool lazyInit();  // Deferred init for SPI bus sharing
+
+public:
+  // Accept pre-initialized SPI - do NOT call spi.begin()
+  SSD1306SPIDisplay(SPIClass* spi, int16_t w, int16_t h, int8_t dc, int8_t rst, int8_t cs)
+    : DisplayDriver(w, h), display(w, h, spi, dc, rst, cs) { _isOn = false; _initialized = false; }
+
+  bool begin();
+
+  bool isOn() override { return _isOn; }
+  void turnOn() override;
+  void turnOff() override;
+  void clear() override;
+  void startFrame(Color bkg = DARK) override;
+  void setTextSize(int sz) override;
+  void setColor(Color c) override;
+  void setCursor(int x, int y) override;
+  void print(const char* str) override;
+  void fillRect(int x, int y, int w, int h) override;
+  void drawRect(int x, int y, int w, int h) override;
+  void drawXbm(int x, int y, const uint8_t* bits, int w, int h) override;
+  uint16_t getTextWidth(const char* str) override;
+  void endFrame() override;
+};

variants/m5stack_unit_c6l/UnitC6LBoard.cpp

@@ -4,7 +4,8 @@
 UnitC6LBoard board;
 
 #if defined(P_LORA_SCLK)
-  static SPIClass spi(0);
+  SPIClass spi(0);
+  bool spi_initialized = false;
   RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, spi);
 #else
   RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY);
@@ -16,12 +17,17 @@ ESP32RTCClock fallback_clock;
 AutoDiscoverRTCClock rtc_clock(fallback_clock);
 SensorManager sensors;
 
+#ifdef DISPLAY_CLASS
+  DISPLAY_CLASS display(&spi, DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_DC, DISPLAY_RST, DISPLAY_CS);
+#endif
+
 bool radio_init() {
   fallback_clock.begin();
   rtc_clock.begin(Wire);
 
 #if defined(P_LORA_SCLK)
   spi.begin(P_LORA_SCLK, P_LORA_MISO, P_LORA_MOSI);
+  spi_initialized = true;
   return radio.std_init(&spi);
 #else
   return radio.std_init();
@@ -30,6 +36,5 @@ bool radio_init() {
 
 mesh::LocalIdentity radio_new_identity() {
   RadioNoiseListener rng(radio);
-  return mesh::LocalIdentity(&rng);  // create new random identity
+  return mesh::LocalIdentity(&rng);
 }
-

variants/m5stack_unit_c6l/UnitC6LBoard.h

@@ -1,15 +1,130 @@
 #pragma once
 
 #include <Arduino.h>
+#include <Wire.h>
 #include <helpers/ESP32Board.h>
 
+// PI4IO I/O Expander (I2C address 0x43)
+// Pin mapping:
+//   P0 = Button (active low)
+//   P1 = (unused input)
+//   P5 = LNA_EN (LNA Enable)
+//   P6 = ANT_SW (RF Switch)
+//   P7 = NRST (LoRa Reset)
+#define PI4IO_ADDR 0x43
+
+// PI4IO registers
+#define PI4IO_REG_CHIP_RESET 0x01
+#define PI4IO_REG_IO_DIR 0x03
+#define PI4IO_REG_OUT_SET 0x05
+#define PI4IO_REG_OUT_H_IM 0x07
+#define PI4IO_REG_IN_DEF_STA 0x09
+#define PI4IO_REG_PULL_EN 0x0B
+#define PI4IO_REG_PULL_SEL 0x0D
+#define PI4IO_REG_IN_STA 0x0F
+#define PI4IO_REG_INT_MASK 0x11
+#define PI4IO_REG_IRQ_STA 0x13
+
 class UnitC6LBoard : public ESP32Board {
+private:
+  bool i2c_write_byte(uint8_t addr, uint8_t reg, uint8_t value) {
+    Wire.beginTransmission(addr);
+    Wire.write(reg);
+    Wire.write(value);
+    return Wire.endTransmission() == 0;
+  }
+
+  bool i2c_read_byte(uint8_t addr, uint8_t reg, uint8_t *value) {
+    Wire.beginTransmission(addr);
+    Wire.write(reg);
+    if (Wire.endTransmission() != 0) return false;
+    if (Wire.requestFrom(addr, (uint8_t)1) != 1) return false;
+    if (!Wire.available()) return false;
+    *value = Wire.read();
+    return true;
+  }
+
+  void initIOExpander() {
+    uint8_t in_data;
+
+    // Reset the I/O expander
+    i2c_write_byte(PI4IO_ADDR, PI4IO_REG_CHIP_RESET, 0xFF);
+    delay(10);
+
+    i2c_read_byte(PI4IO_ADDR, PI4IO_REG_CHIP_RESET, &in_data);
+    delay(10);
+
+    // Set P5, P6, P7 as outputs (0: input, 1: output)
+    i2c_write_byte(PI4IO_ADDR, PI4IO_REG_IO_DIR, 0b11100000);
+    delay(10);
+
+    // Disable High-Impedance for used pins
+    i2c_write_byte(PI4IO_ADDR, PI4IO_REG_OUT_H_IM, 0b00011100);
+    delay(10);
+
+    // Pull up/down select (0: down, 1: up)
+    i2c_write_byte(PI4IO_ADDR, PI4IO_REG_PULL_SEL, 0b11100011);
+    delay(10);
+
+    // Pull up/down enable (0: disable, 1: enable)
+    i2c_write_byte(PI4IO_ADDR, PI4IO_REG_PULL_EN, 0b11100011);
+    delay(10);
+
+    // Default input state for P0, P1 (buttons)
+    i2c_write_byte(PI4IO_ADDR, PI4IO_REG_IN_DEF_STA, 0b00000011);
+    delay(10);
+
+    // Enable interrupts for P0, P1 (0: enable, 1: disable)
+    i2c_write_byte(PI4IO_ADDR, PI4IO_REG_INT_MASK, 0b11111100);
+    delay(10);
+
+    // Set P7 (Reset) high, P5 and P6 will be set after
+    i2c_write_byte(PI4IO_ADDR, PI4IO_REG_OUT_SET, 0b10000000);
+    delay(10);
+
+    // Clear IRQ status
+    i2c_read_byte(PI4IO_ADDR, PI4IO_REG_IRQ_STA, &in_data);
+
+    // Enable RF switch (P6 high) and LNA (P5 high)
+    i2c_read_byte(PI4IO_ADDR, PI4IO_REG_OUT_SET, &in_data);
+    in_data |= (1 << 6);  // P6 = RF Switch = HIGH
+    in_data |= (1 << 5);  // P5 = LNA Enable = HIGH
+    i2c_write_byte(PI4IO_ADDR, PI4IO_REG_OUT_SET, in_data);
+  }
+
 public:
   void begin() {
     ESP32Board::begin();
+
+    // Initialize I/O expander for LoRa RF control
+    initIOExpander();
+
+#ifdef PIN_BUZZER
+    pinMode(PIN_BUZZER, OUTPUT);
+    digitalWrite(PIN_BUZZER, LOW);
+#endif
   }
 
   const char* getManufacturerName() const override {
-    return "Unit C6L";
+    return "M5Stack Unit C6L";
+  }
+
+  // Read button state from I/O expander P0 (active low)
+  bool isButtonPressed() {
+    uint8_t in_data = 0xFF;
+    if (!i2c_read_byte(PI4IO_ADDR, PI4IO_REG_IN_STA, &in_data)) {
+      return false;
+    }
+    return !(in_data & 0x01);
+  }
+
+#ifdef PIN_BUZZER
+  void playTone(uint16_t frequency, uint16_t duration_ms) {
+    tone(PIN_BUZZER, frequency, duration_ms);
+  }
+
+  void stopTone() {
+    noTone(PIN_BUZZER);
   }
+#endif
 };

variants/m5stack_unit_c6l/companion/UITask.cpp

@@ -0,0 +1,111 @@
+#include "UITask.h"
+#include <target.h>
+#include "../../examples/companion_radio/MyMesh.h"
+
+#define AUTO_OFF_MILLIS    30000
+#define BOOT_SCREEN_MILLIS 4000
+#define SCROLL_SPEED_MS    150
+#define SCROLL_PAUSE_MS    2000
+
+void UITask::begin(DisplayDriver* display, SensorManager* sensors, NodePrefs* node_prefs) {
+  _display = display;
+  _node_prefs = node_prefs;
+  _need_refresh = true;
+  _msgcount = 0;
+  _next_refresh = 0;
+  _auto_off = millis() + AUTO_OFF_MILLIS;
+  _scroller.reset();
+
+  if (_display != NULL) {
+    _display->turnOn();
+  }
+}
+
+void UITask::newMsg(uint8_t path_len, const char* from_name, const char* text, int msgcount) {
+  _msgcount = msgcount;
+  _need_refresh = true;
+  if (_display != NULL && !_display->isOn()) {
+    _display->turnOn();
+    _auto_off = millis() + AUTO_OFF_MILLIS;
+  }
+}
+
+void UITask::renderScreen() {
+  if (_display == NULL) return;
+
+  int w = _display->width();
+  char tmp[32];
+
+  if (millis() < BOOT_SCREEN_MILLIS) {
+    _display->setTextSize(1);
+    _display->drawTextCentered(w / 2, 3, "MeshCore");
+    _display->drawTextCentered(w / 2, 20, FIRMWARE_VERSION);
+    _display->drawTextCentered(w / 2, 34, "Companion");
+    return;
+  }
+
+  _display->setTextSize(1);
+
+#ifdef BLE_PIN_CODE
+  uint32_t pin = the_mesh.getBLEPin();
+  if (_connected) {
+    _display->drawTextCentered(w / 2, 0, "Connected");
+  } else if (pin != 0) {
+    sprintf(tmp, "PIN:%06d", pin);
+    _display->drawTextCentered(w / 2, 0, tmp);
+  } else {
+    _display->drawTextCentered(w / 2, 0, "Ready");
+  }
+#else
+  _display->drawTextCentered(w / 2, 0, "USB Ready");
+#endif
+
+  int nameW = _display->getTextWidth(_node_prefs->node_name);
+  if (nameW <= w) {
+    _display->setCursor(0, 10);
+    _display->print(_node_prefs->node_name);
+  } else {
+    _display->setCursor(-_scroller.offset, 10);
+    _display->print(_node_prefs->node_name);
+  }
+
+  sprintf(tmp, "%.3f", _node_prefs->freq);
+  _display->setCursor(0, 20);
+  _display->print(tmp);
+
+  if (_msgcount > 0) {
+    sprintf(tmp, "%d unread", _msgcount);
+    _display->setCursor(0, 30);
+    _display->print(tmp);
+  }
+}
+
+void UITask::loop() {
+  if (_display == NULL) return;
+
+  if (board.isButtonPressed()) {
+    if (!_display->isOn()) {
+      _display->turnOn();
+      _need_refresh = true;
+    }
+    _auto_off = millis() + AUTO_OFF_MILLIS;
+  }
+
+  if (_display->isOn()) {
+    if (_node_prefs != NULL) {
+      _scroller.update(_display->getTextWidth(_node_prefs->node_name),
+                       _display->width(), millis(), SCROLL_SPEED_MS, SCROLL_PAUSE_MS);
+    }
+
+    if (millis() >= _next_refresh) {
+      _display->startFrame();
+      renderScreen();
+      _display->endFrame();
+      _next_refresh = millis() + 200;
+    }
+
+    if (millis() > _auto_off) {
+      _display->turnOff();
+    }
+  }
+}

variants/m5stack_unit_c6l/companion/UITask.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <Arduino.h>
+#include <helpers/ui/DisplayDriver.h>
+#include <helpers/SensorManager.h>
+#include "../../examples/companion_radio/NodePrefs.h"
+#include "../../examples/companion_radio/AbstractUITask.h"
+
+class UITask : public AbstractUITask {
+public:
+  UITask(mesh::MainBoard* board, BaseSerialInterface* serial)
+    : AbstractUITask(board, serial), _display(NULL) {}
+
+  void begin(DisplayDriver* display, SensorManager* sensors, NodePrefs* node_prefs);
+  void loop() override;
+  void notify(UIEventType t) override {}
+  void msgRead(int msgcount) override { _msgcount = msgcount; _need_refresh = true; }
+  void newMsg(uint8_t path_len, const char* from_name, const char* text, int msgcount) override;
+
+private:
+  void renderScreen();
+  DisplayDriver* _display;
+  NodePrefs* _node_prefs;
+  int _msgcount;
+  bool _need_refresh;
+  uint32_t _next_refresh;
+  uint32_t _auto_off;
+  MarqueeScroller _scroller;
+};

variants/m5stack_unit_c6l/platformio.ini

@@ -1,12 +1,17 @@
-[M5Stack_Unit_C6L]
+; M5Stack Unit C6L - ESP32-C6 with SX1262 LoRa
+; https://docs.m5stack.com/en/unit/Unit_C6L
+[m5stack_unit_c6l]
 extends = esp32c6_base
 board = esp32-c6-devkitm-1
+board_build.flash_mode = dio
 board_build.partitions = min_spiffs.csv ; get around 4mb flash limit
 build_flags =
   ${esp32c6_base.build_flags}
   ${sensor_base.build_flags}
   -I variants/m5stack_unit_c6l
-  -D P_LORA_TX_LED=15
+  -D ARDUINO_USB_CDC_ON_BOOT=1
+  -D ARDUINO_USB_MODE=1
+  ; LoRa SX1262 SPI pins
   -D P_LORA_SCLK=20
   -D P_LORA_MISO=22
   -D P_LORA_MOSI=21
@@ -14,99 +19,102 @@ build_flags =
   -D P_LORA_DIO_1=7
   -D P_LORA_BUSY=19
   -D P_LORA_RESET=-1
-  -D PIN_BUZZER=11
-  -D PIN_BOARD_SDA=16
-  -D PIN_BOARD_SCL=17
-  -D SX126X_RXEN=5
+  ; I2C pins (PI4IO expander + sensors)
+  -D PIN_BOARD_SDA=10
+  -D PIN_BOARD_SCL=8
+  ; SX1262 configuration
   -D SX126X_DIO2_AS_RF_SWITCH=true
-  -D SX126X_DIO3_TCXO_VOLTAGE=1.8
+  -D SX126X_DIO3_TCXO_VOLTAGE=3.0
   -D SX126X_CURRENT_LIMIT=140
   -D SX126X_RX_BOOSTED_GAIN=1
-  -D USE_SX1262
+  ; Radio configuration
   -D RADIO_CLASS=CustomSX1262
   -D WRAPPER_CLASS=CustomSX1262Wrapper
   -D LORA_TX_POWER=22
   -D DISABLE_WIFI_OTA=1
+  ; NeoPixel LED for TX indication
+  -D P_LORA_TX_NEOPIXEL_LED=2
+  ; Buzzer
+  -D PIN_BUZZER=11
+  ; GPS on Grove port
   -D GPS_RX=4
   -D GPS_TX=5
-build_src_filter = ${esp32c6_base.build_src_filter}
-  +<../variants/m5stack_unit_c6l>
-  +<UnitC6LBoard.cpp>
+  ; Display configuration (64x48 SSD1306 OLED via SPI, shared with LoRa)
+  -D DISPLAY_CLASS=SSD1306SPIDisplay
+  -D DISPLAY_CS=6
+  -D DISPLAY_DC=18
+  -D DISPLAY_RST=15
+  -D DISPLAY_WIDTH=64
+  -D DISPLAY_HEIGHT=48
+  -D DISPLAY_ROTATION=2
 lib_deps =
   ${esp32c6_base.lib_deps}
-  ${sensor_base.lib_deps}
-
-[env:M5Stack_Unit_C6L_repeater]
-extends = M5Stack_Unit_C6L
-build_src_filter = ${M5Stack_Unit_C6L.build_src_filter}
-  +<../examples/simple_repeater/*.cpp>
-build_flags =
-  ${M5Stack_Unit_C6L.build_flags}
-  -D ADVERT_NAME='"Unit C6L Repeater"'
-  -D ADVERT_LAT=0.0
-  -D ADVERT_LON=0.0
-  -D ADMIN_PASSWORD='"password"'
-  -D MAX_NEIGHBOURS=50
-;  -D MESH_PACKET_LOGGING=1
-;  -D MESH_DEBUG=1
-lib_deps =
-  ${M5Stack_Unit_C6L.lib_deps}
-;  ${esp32_ota.lib_deps}
+  adafruit/Adafruit SSD1306 @ ^2.5.13
+build_src_filter = ${esp32c6_base.build_src_filter}
+  +<../variants/m5stack_unit_c6l>
+  -<../variants/m5stack_unit_c6l/companion/*.cpp>
+  +<helpers/ui/SSD1306SPIDisplay.cpp>
 
-[env:M5Stack_Unit_C6L_room_server]
-extends = M5Stack_Unit_C6L
-build_src_filter = ${M5Stack_Unit_C6L.build_src_filter}
-  +<../examples/simple_room_server>
+[env:m5stack_unit_c6l_companion_radio_usb]
+extends = m5stack_unit_c6l
 build_flags =
-  ${M5Stack_Unit_C6L.build_flags}
-  -D ADVERT_NAME='"Unit C6L Room"'
-  -D ADVERT_LAT=0.0
-  -D ADVERT_LON=0.0
-  -D ADMIN_PASSWORD='"password"'
-  -D ROOM_PASSWORD='"hello"'
-;  -D MESH_PACKET_LOGGING=1
-;  -D MESH_DEBUG=1
-lib_deps =
-  ${M5Stack_Unit_C6L.lib_deps}
-;  ${esp32_ota.lib_deps}
-
-[env:M5Stack_Unit_C6L_companion_radio_ble]
-extends = M5Stack_Unit_C6L
-build_flags = ${M5Stack_Unit_C6L.build_flags}
+  ${m5stack_unit_c6l.build_flags}
   -D MAX_CONTACTS=350
   -D MAX_GROUP_CHANNELS=40
-  -D BLE_PIN_CODE=123456
-  -D BLE_DEBUG_LOGGING=1
   -D OFFLINE_QUEUE_SIZE=256
-;  -D MESH_PACKET_LOGGING=1
-;  -D MESH_DEBUG=1
-build_src_filter = ${M5Stack_Unit_C6L.build_src_filter}
+  -I variants/m5stack_unit_c6l/companion
+build_src_filter = ${m5stack_unit_c6l.build_src_filter}
   +<helpers/esp32/*.cpp>
   -<helpers/esp32/ESPNOWRadio.cpp>
   +<../examples/companion_radio/*.cpp>
+  +<../variants/m5stack_unit_c6l/companion/*.cpp>
 lib_deps =
-  ${M5Stack_Unit_C6L.lib_deps}
+  ${m5stack_unit_c6l.lib_deps}
   densaugeo/base64 @ ~1.4.0
   end2endzone/NonBlockingRTTTL@^1.3.0
 
-[env:M5Stack_Unit_C6L_companion_radio_usb]
-extends = M5Stack_Unit_C6L
-build_flags = ${M5Stack_Unit_C6L.build_flags}
+[env:m5stack_unit_c6l_companion_radio_ble]
+extends = m5stack_unit_c6l
+build_flags =
+  ${m5stack_unit_c6l.build_flags}
   -D MAX_CONTACTS=350
   -D MAX_GROUP_CHANNELS=40
+  -D BLE_PIN_CODE=123456
   -D OFFLINE_QUEUE_SIZE=256
-  -D ARDUINO_USB_CDC_ON_BOOT=1
-  -D ARDUINO_USB_MODE=1
-build_src_filter = ${M5Stack_Unit_C6L.build_src_filter}
+  -I variants/m5stack_unit_c6l/companion
+build_src_filter = ${m5stack_unit_c6l.build_src_filter}
   +<helpers/esp32/*.cpp>
   -<helpers/esp32/ESPNOWRadio.cpp>
   +<../examples/companion_radio/*.cpp>
+  +<../variants/m5stack_unit_c6l/companion/*.cpp>
 lib_deps =
-  ${M5Stack_Unit_C6L.lib_deps}
+  ${m5stack_unit_c6l.lib_deps}
   densaugeo/base64 @ ~1.4.0
   end2endzone/NonBlockingRTTTL@^1.3.0
 
-[env:M5Stack_Unit_C6L_kiss_modem]
-extends = M5Stack_Unit_C6L
-build_src_filter = ${M5Stack_Unit_C6L.build_src_filter}
-  +<../examples/kiss_modem/>
+[env:m5stack_unit_c6l_repeater]
+extends = m5stack_unit_c6l
+build_flags =
+  ${m5stack_unit_c6l.build_flags}
+  -D ADVERT_NAME='"M5Stack C6L Repeater"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=50
+build_src_filter = ${m5stack_unit_c6l.build_src_filter}
+  +<../examples/simple_repeater>
+lib_deps =
+  ${m5stack_unit_c6l.lib_deps}
+
+[env:m5stack_unit_c6l_room_server]
+extends = m5stack_unit_c6l
+build_flags = ${m5stack_unit_c6l.build_flags}
+  -D ADVERT_NAME='"M5Stack C6L Room"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D ROOM_PASSWORD='"hello"'
+build_src_filter = ${m5stack_unit_c6l.build_src_filter}
+  +<../examples/simple_room_server>
+lib_deps =
+  ${m5stack_unit_c6l.lib_deps}

variants/m5stack_unit_c6l/target.h

@@ -9,10 +9,23 @@
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/SensorManager.h>
 
+#ifdef DISPLAY_CLASS
+  #include <helpers/ui/SSD1306SPIDisplay.h>
+  extern DISPLAY_CLASS display;
+#endif
+
+#if defined(P_LORA_SCLK)
+  extern SPIClass spi;
+  extern bool spi_initialized;
+#endif
+
 extern UnitC6LBoard board;
 extern WRAPPER_CLASS radio_driver;
 extern AutoDiscoverRTCClock rtc_clock;
 extern SensorManager sensors;
 
 bool radio_init();
-mesh::LocalIdentity radio_new_identity();
+uint32_t radio_get_rng_seed();
+void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
+void radio_set_tx_power(uint8_t dbm);
+mesh::LocalIdentity radio_new_identity();