#ifndef _VARIANT_HELTEC_NRF_ #define _VARIANT_HELTEC_NRF_ /** Master clock frequency */ #define VARIANT_MCK (64000000ul) #define USE_LFXO // Board uses 32khz crystal for LF /*---------------------------------------------------------------------------- * Headers *----------------------------------------------------------------------------*/ #include "WVariant.h" #ifdef __cplusplus extern "C" { #endif // __cplusplus // Number of pins defined in PinDescription array #define PINS_COUNT (48) #define NUM_DIGITAL_PINS (48) #define NUM_ANALOG_INPUTS (1) #define NUM_ANALOG_OUTPUTS (0) // LEDs #define PIN_LED1 (13) // 13 red (confirmed on 1.0 board) #define LED_RED PIN_LED1 #define LED_BLUE PIN_LED1 #define LED_GREEN PIN_LED1 #define LED_BUILTIN LED_BLUE #define LED_CONN LED_BLUE #define LED_STATE_ON 0 // State when LED is lit /* * Buttons */ #define PIN_BUTTON1 (32 + 10) // #define PIN_BUTTON2 (0 + 18) // 0.18 is labeled on the board as RESET but we configure it in the bootloader as a regular // GPIO /* No longer populated on PCB */ #define PIN_SERIAL2_RX (0 + 7) #define PIN_SERIAL2_TX (0 + 8) // #define PIN_SERIAL2_EN (0 + 17) /** Wire Interfaces */ #define WIRE_INTERFACES_COUNT 1 #define PIN_WIRE_SDA (32 + 15) #define PIN_WIRE_SCL (32 + 13) /* * Lora radio */ #define USE_SX1262 #define SX126X_CS (0 + 26) // FIXME - we really should define LORA_CS instead #define LORA_CS (0 + 26) #define SX126X_DIO1 (0 + 16) // Note DIO2 is attached internally to the module to an analog switch for TX/RX switching // #define SX1262_DIO3 (0 + 21) // This is used as an *output* from the sx1262 and connected internally to power the tcxo, do not drive from the // main // CPU? #define SX126X_BUSY (0 + 15) #define SX126X_RESET (0 + 12) // Not really an E22 but TTGO seems to be trying to clone that #define SX126X_DIO2_AS_RF_SWITCH #define SX126X_DIO3_TCXO_VOLTAGE 1.8 // Display (E-Ink) #define PIN_EINK_CS 24 #define PIN_EINK_BUSY 32 + 6 #define PIN_EINK_DC 31 #define PIN_EINK_RES 32 + 4 #define PIN_EINK_SCLK 22 #define PIN_EINK_MOSI 20 #define PIN_SPI1_MISO -1 #define PIN_SPI1_MOSI PIN_EINK_MOSI #define PIN_SPI1_SCK PIN_EINK_SCLK /* * GPS pins */ #define PIN_SERIAL1_RX 32 + 5 #define PIN_SERIAL1_TX 32 + 7 /* * SPI Interfaces */ #define SPI_INTERFACES_COUNT 2 // For LORA, spi 0 #define PIN_SPI_MISO (32 + 9) #define PIN_SPI_MOSI (0 + 5) #define PIN_SPI_SCK (0 + 4) // #define PIN_PWR_EN (0 + 6) // To debug via the segger JLINK console rather than the CDC-ACM serial device // #define USE_SEGGER // Battery // The battery sense is hooked to pin A0 (4) // it is defined in the anlaolgue pin section of this file // and has 12 bit resolution #define ADC_CTRL 32 + 2 #define ADC_CTRL_ENABLED HIGH #define BATTERY_PIN 29 #define ADC_RESOLUTION 14 #define BATTERY_SENSE_RESOLUTION_BITS 12 #define BATTERY_SENSE_RESOLUTION 4096.0 #undef AREF_VOLTAGE #define AREF_VOLTAGE 3.0 #define VBAT_AR_INTERNAL AR_INTERNAL_3_0 #define ADC_MULTIPLIER (4.90F) #undef HAS_GPS #define HAS_GPS 0 #define HAS_RTC 0 #ifdef __cplusplus } #endif #endif