// Unlike many other InkHUD variants, this environment does require its own variant.h file // This is because the default T114 variant maps SPI1 pins to the optional TFT display, and those pins are not broken out #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 #define HELTEC_MESH_NODE_T114 // 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 (32 + 3) // green (confirmed on 1.0 board) #define LED_BLUE PIN_LED1 // fake for bluefruit library #define LED_GREEN PIN_LED1 #define LED_BUILTIN LED_GREEN #define LED_STATE_ON 0 // State when LED is lit #define HAS_NEOPIXEL // Enable the use of neopixels #define NEOPIXEL_COUNT 2 // How many neopixels are connected #define NEOPIXEL_DATA 14 // gpio pin used to send data to the neopixels #define NEOPIXEL_TYPE (NEO_GRB + NEO_KHZ800) // type of neopixels in use /* * 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 + 9) #define PIN_SERIAL2_TX (0 + 10) // #define PIN_SERIAL2_EN (0 + 17) /* * I2C */ #define WIRE_INTERFACES_COUNT 2 // I2C bus 0 // Routed to footprint for PCF8563TS RTC // Not populated on T114 V1, maybe in future? #define PIN_WIRE_SDA (0 + 26) // P0.26 #define PIN_WIRE_SCL (0 + 27) // P0.27 // I2C bus 1 // Available on header pins, for general use #define PIN_WIRE1_SDA (0 + 16) // P0.16 #define PIN_WIRE1_SCL (0 + 13) // P0.13 /* * Lora radio */ #define USE_SX1262 // #define USE_SX1268 #define SX126X_CS (0 + 24) // FIXME - we really should define LORA_CS instead #define LORA_CS (0 + 24) #define SX126X_DIO1 (0 + 20) // 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 + 17) #define SX126X_RESET (0 + 25) // 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 /* * E-Ink DIY */ #define PIN_EINK_MOSI (0 + 8) // also called SDA #define PIN_EINK_SCLK (0 + 7) #define PIN_EINK_CS (32 + 12) #define PIN_EINK_DC (32 + 14) #define PIN_EINK_RES (0 + 5) #define PIN_EINK_BUSY (32 + 15) /* * GPS pins */ #define GPS_L76K // #define PIN_GPS_RESET (32 + 6) // An output to reset L76K GPS. As per datasheet, low for > 100ms will reset the L76K #define GPS_RESET_MODE LOW // #define PIN_GPS_EN (21) #define VEXT_ENABLE (0 + 21) #define PERIPHERAL_WARMUP_MS 1000 // Make sure I2C QuickLink has stable power before continuing #define VEXT_ON_VALUE HIGH // #define GPS_EN_ACTIVE HIGH #define PIN_GPS_STANDBY (32 + 2) // An output to wake GPS, low means allow sleep, high means force wake #define PIN_GPS_PPS (32 + 4) // Seems to be missing on this new board // #define PIN_GPS_PPS (32 + 4) // Pulse per second input from the GPS #define GPS_TX_PIN (32 + 5) // This is for bits going TOWARDS the CPU #define GPS_RX_PIN (32 + 7) // 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 // PCF8563 RTC Module #define PCF8563_RTC 0x51 /* * SPI Interfaces */ #define SPI_INTERFACES_COUNT 2 // For LORA, spi 0 #define PIN_SPI_MISO (0 + 23) #define PIN_SPI_MOSI (0 + 22) #define PIN_SPI_SCK (0 + 19) #define PIN_SPI1_MISO -1 #define PIN_SPI1_MOSI PIN_EINK_MOSI #define PIN_SPI1_SCK PIN_EINK_SCLK // #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 6 #define ADC_CTRL_ENABLED HIGH #define BATTERY_PIN 4 #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) #define HAS_RTC 0 #ifdef __cplusplus } #endif /*---------------------------------------------------------------------------- * Arduino objects - C++ only *----------------------------------------------------------------------------*/ #endif