d516cd8a9e
Battery (TechoBoard.h/cpp): Added PIN_VBAT_MEAS_EN (P0.31) — the T-Echo Lite has a gated voltage divider that must be enabled before reading. Also added pinMode(PIN_VBAT_READ, INPUT) before each ADC read to reclaim P0.02 from other peripherals. Pin definitions hardcoded from LilyGo's t_echo_lite_config.h. I2C (variant.h): Corrected SDA/SCL from P0.04/P0.02 to P1.04/P1.02 per LilyGo's IIC_1_SDA/IIC_1_SCL. The old P0.02 mapping conflicted with the battery ADC pin. GPS (variant.h): Corrected all five GPS pin assignments to match LilyGo's config — UART TX/RX, wake, PPS, and power enable were all scrambled. SPI (variant.h): Fixed SPI_INTERFACES_COUNT from _PINNUM(0, 2) to (2). Tested on T-Echo Lite Non-Shell (USB-C, no display). Battery readings match Heltec V4 reference within 10mV.
159 lines
5.3 KiB
C
159 lines
5.3 KiB
C
/*
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* variant.h
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* Copyright (C) 2023 Seeed K.K.
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* MIT License
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*/
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#pragma once
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#define _PINNUM(port, pin) ((port) * 32 + (pin))
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#include "WVariant.h"
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////////////////////////////////////////////////////////////////////////////////
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// Low frequency clock source
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#define USE_LFXO // 32.768 kHz crystal oscillator
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#define VARIANT_MCK (64000000ul)
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#define WIRE_INTERFACES_COUNT (1)
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////////////////////////////////////////////////////////////////////////////////
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// Power
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#define PIN_PWR_EN _PINNUM(0, 30) // RT9080_EN
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#define BATTERY_PIN _PINNUM(0, 2)
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#define ADC_MULTIPLIER (2.0F)
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#define ADC_RESOLUTION (14)
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#define BATTERY_SENSE_RES (12)
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#define AREF_VOLTAGE (3.0)
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////////////////////////////////////////////////////////////////////////////////
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// Number of pins
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#define PINS_COUNT (48)
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#define NUM_DIGITAL_PINS (48)
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#define NUM_ANALOG_INPUTS (1)
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#define NUM_ANALOG_OUTPUTS (0)
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////////////////////////////////////////////////////////////////////////////////
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// UART pin definition
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#define PIN_SERIAL1_RX PIN_GPS_TX
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#define PIN_SERIAL1_TX PIN_GPS_RX
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////////////////////////////////////////////////////////////////////////////////
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// I2C pin definition
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#define PIN_WIRE_SDA _PINNUM(1, 4) // (SDA) - per LilyGo IIC_1_SDA
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#define PIN_WIRE_SCL _PINNUM(1, 2) // (SCL) - per LilyGo IIC_1_SCL
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////////////////////////////////////////////////////////////////////////////////
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// SPI pin definition
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#define SPI_INTERFACES_COUNT (2)
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#define PIN_SPI_MISO _PINNUM(0, 17) // (MISO)
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#define PIN_SPI_MOSI _PINNUM(0, 15) // (MOSI)
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#define PIN_SPI_SCK _PINNUM(0, 13) // (SCK)
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#define PIN_SPI_NSS (-1)
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////////////////////////////////////////////////////////////////////////////////
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// QSPI FLASH
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#define PIN_QSPI_SCK _PINNUM(0, 4)
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#define PIN_QSPI_CS _PINNUM(0, 12)
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#define PIN_QSPI_IO0 _PINNUM(0, 6)
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#define PIN_QSPI_IO1 _PINNUM(0, 8)
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#define PIN_QSPI_IO2 _PINNUM(1, 9)
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#define PIN_QSPI_IO3 _PINNUM(0, 26)
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#define EXTERNAL_FLASH_DEVICES ZD25WQ32CEIGR
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#define EXTERNAL_FLASH_USE_QSPI
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////////////////////////////////////////////////////////////////////////////////
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// Builtin LEDs
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#define LED_RED _PINNUM(1, 14) // LED_3
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#define LED_BLUE _PINNUM(1, 5) // LED_2
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#define LED_GREEN _PINNUM(1, 7) // LED_1
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//#define PIN_STATUS_LED LED_BLUE
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#define LED_BUILTIN (-1)
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#define LED_PIN LED_BUILTIN
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#define LED_STATE_ON LOW
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////////////////////////////////////////////////////////////////////////////////
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// Builtin buttons
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#define PIN_BUTTON1 _PINNUM(0, 24) // BOOT
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#define BUTTON_PIN PIN_BUTTON1
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#define PIN_USER_BTN BUTTON_PIN
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#define PIN_BUTTON2 _PINNUM(0, 18)
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#define BUTTON_PIN2 PIN_BUTTON2
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#define EXTERNAL_FLASH_DEVICES MX25R1635F
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#define EXTERNAL_FLASH_USE_QSPI
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////////////////////////////////////////////////////////////////////////////////
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// Lora
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#define USE_SX1262
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#define LORA_CS _PINNUM(0, 11)
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#define SX126X_POWER_EN _PINNUM(0, 30)
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#define SX126X_DIO1 _PINNUM(1, 8)
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#define SX126X_BUSY _PINNUM(0, 14)
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#define SX126X_RESET _PINNUM(0, 7)
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#define SX126X_RF_VC1 _PINNUM(0, 27)
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#define SX126X_RF_VC2 _PINNUM(0, 33)
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#define P_LORA_DIO_1 SX126X_DIO1
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#define P_LORA_NSS LORA_CS
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#define P_LORA_RESET SX126X_RESET
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#define P_LORA_BUSY SX126X_BUSY
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#define P_LORA_SCLK PIN_SPI_SCK
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#define P_LORA_MISO PIN_SPI_MISO
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#define P_LORA_MOSI PIN_SPI_MOSI
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////////////////////////////////////////////////////////////////////////////////
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// SPI1
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#define PIN_SPI1_MISO (-1) // Not used for Display
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#define PIN_SPI1_MOSI _PINNUM(0, 20)
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#define PIN_SPI1_SCK _PINNUM(0, 19)
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// GxEPD2 needs that for a panel that is not even used !
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extern const int MISO;
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extern const int MOSI;
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extern const int SCK;
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////////////////////////////////////////////////////////////////////////////////
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// Display
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// #define DISP_MISO (-1) // Not used for Display
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#define DISP_MOSI _PINNUM(0, 20)
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#define DISP_SCLK _PINNUM(0, 19)
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#define DISP_CS _PINNUM(0, 22)
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#define DISP_DC _PINNUM(0, 21)
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#define DISP_RST _PINNUM(0, 28)
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#define DISP_BUSY _PINNUM(0, 3)
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#define DISP_POWER _PINNUM(1, 12)
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// #define DISP_BACKLIGHT (-1) // Display has no backlight
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#define PIN_DISPLAY_CS DISP_CS
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#define PIN_DISPLAY_DC DISP_DC
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#define PIN_DISPLAY_RST DISP_RST
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#define PIN_DISPLAY_BUSY DISP_BUSY
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////////////////////////////////////////////////////////////////////////////////
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// GPS — per LilyGo t_echo_lite_config.h
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// PIN_GPS_TX/RX named from GPS module's perspective
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#define PIN_GPS_TX _PINNUM(0, 29) // GPS UART TX → MCU RX
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#define PIN_GPS_RX _PINNUM(1, 10) // GPS UART RX ← MCU TX
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#define GPS_EN _PINNUM(1, 11) // GPS RT9080 power enable
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#define PIN_GPS_STANDBY _PINNUM(1, 13) // GPS wake-up
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#define PIN_GPS_PPS _PINNUM(1, 15) // GPS 1PPS
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