meshtastic-firmware/variants/esp32s3/ELECROW-ThinkNode-M5/variant.h

#ifndef ELECROW_ThinkNode_M5_VAR
#define ELECROW_ThinkNode_M5_VAR

#define UART_TX 43
#define UART_RX 44

#define HAS_PCA9557

// LED
// Both of these are on the GPIO expander
#define PCA_LED_NOTIFICATION 1 // the Blue LED
#define PCA_LED_ENABLE 2       // the power supply to the LEDs, in an OR arrangement with VBUS power
#define PCA_LED_POWER 3        // the Red LED? Seems to have hardware logic to blink when USB is plugged in.
#define POWER_LED_HARDWARE_BLINKS_WHILE_CHARGING

// USB_CHECK
#define EXT_PWR_DETECT 12
#define BATTERY_PIN 8
#define ADC_CHANNEL ADC_CHANNEL_7

#define ADC_MULTIPLIER 2.0 // 2.0 + 10% for correction of display undervoltage.

#define PIN_BUZZER 9

// Buttons

#define PIN_BUTTON2 14
#define PIN_BUTTON1 21

// Wire Interfaces

#define I2C_SCL 1
#define I2C_SDA 2

// PCF8563 RTC Module
#define PCF8563_RTC 0x51

// GPS pins
#define GPS_SWITH 10
#define HAS_GPS 1
#define GPS_L76K
#define PIN_GPS_REINIT 13 // An output to reset L76K GPS. As per datasheet, low for > 100ms will reset the L76K

#define PIN_GPS_STANDBY 11 // An output to wake GPS, low means allow sleep, high means force wake

#define GPS_TX_PIN 20 // This is for bits going TOWARDS the CPU
#define GPS_RX_PIN 19 // This is for bits going TOWARDS the GPS

#define GPS_THREAD_INTERVAL 50

#define PIN_SERIAL1_RX GPS_TX_PIN
#define PIN_SERIAL1_TX GPS_RX_PIN

#define SX126X_CS 17
#define LORA_SCK 16
#define LORA_MOSI 15
#define LORA_MISO 7
#define SX126X_RESET 6
#define SX126X_BUSY 5
#define SX126X_DIO1 4
#define SX126X_DIO2_AS_RF_SWITCH
#define SX126X_DIO3_TCXO_VOLTAGE 3.3
#define SX126X_POWER_EN 46
#define SX126X_MAX_POWER 22 // SX126xInterface.cpp defaults to 22 if not defined, but here we define it for good practice
#define USE_SX1262
#define LORA_CS SX126X_CS // FIXME: for some reason both are used in /src
#define LORA_DIO1 SX126X_DIO1

#define USE_EINK
// Note: this is really just backlight power
#define PCA_PIN_EINK_EN 5 // This is the pin number on the GPIO expander
#define PIN_EINK_CS 39
#define PIN_EINK_BUSY 42
#define PIN_EINK_DC 40
#define PIN_EINK_RES 41
#define PIN_EINK_SCLK 38
#define PIN_EINK_MOSI 45 // also called SDI

// Controls power for all peripherals (eink + GPS + LoRa + Sensor)
#define PIN_POWER_EN -1
#define PCA_PIN_POWER_EN 4 // This is the pin number on the GPIO expander

#define PIN_SPI_MISO 7
#define PIN_SPI_MOSI 15
#define PIN_SPI_SCK 16

#define BUTTON_PIN PIN_BUTTON1
#define BUTTON_PIN_ALT PIN_BUTTON2
#define ALT_BUTTON_WAKE

#define SERIAL_PRINT_PORT 0
#endif