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https://github.com/meshtastic/firmware.git
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221 lines
5.4 KiB
C
221 lines
5.4 KiB
C
#ifndef _SEEED_XIAO_NRF52840_KIT_H_
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#define _SEEED_XIAO_NRF52840_KIT_H_
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/** Master clock frequency */
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#define VARIANT_MCK (64000000ul)
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#define USE_LFXO // Board uses 32khz crystal for LF
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// #define USE_LFRC // Board uses RC for LF
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/*----------------------------------------------------------------------------
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* Headers
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*----------------------------------------------------------------------------*/
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#include "WVariant.h"
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#ifdef __cplusplus
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extern "C" {
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#endif // __cplusplus
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#define PINS_COUNT (33)
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#define NUM_DIGITAL_PINS (33)
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#define NUM_ANALOG_INPUTS (8)
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#define NUM_ANALOG_OUTPUTS (0)
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/*
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* Digital Pins
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*/
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#define D0 (0ul)
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#define D1 (1ul)
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#define D2 (2ul)
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#define D3 (3ul)
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#define D4 (4ul)
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#define D5 (5ul)
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#define D6 (6ul)
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#define D7 (7ul)
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#define D8 (8ul)
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#define D9 (9ul)
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#define D10 (10ul)
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/*
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* Analog pins
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*/
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#define PIN_A0 (0)
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#define PIN_A1 (1)
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#define PIN_A2 (32)
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#define PIN_A3 (3)
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#define PIN_A4 (4)
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#define PIN_A5 (5)
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#define PIN_VBAT (32)
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#define VBAT_ENABLE (14)
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static const uint8_t A0 = PIN_A0;
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static const uint8_t A1 = PIN_A1;
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static const uint8_t A2 = PIN_A2;
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static const uint8_t A3 = PIN_A3;
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static const uint8_t A4 = PIN_A4;
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static const uint8_t A5 = PIN_A5;
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#define ADC_RESOLUTION 12
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/*
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* LEDs
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*/
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#define LED_STATE_ON (0) // RGB LED is common anode
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#define LED_RED (11)
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#define LED_GREEN (13)
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#define LED_BLUE (12)
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#define PIN_LED1 LED_GREEN // PIN_LED1 is used in src/platform/nrf52/architecture.h to define LED_PIN
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#define PIN_LED2 LED_BLUE
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#define PIN_LED3 LED_RED
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#define LED_BUILTIN LED_RED // LED_BUILTIN is used by framework-arduinoadafruitnrf52 to indicate flash writes
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#define LED_PWR LED_RED
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#define USER_LED LED_BLUE
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/*
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* Buttons
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*/
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/*
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* D0 is shared with PIN_GPS_STANDBY on the L76K GNSS Module, so refer to
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* GPS_L76K definition preventing this conflict
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*/
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// #define BUTTON_PIN D0
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/*
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* Serial Interfaces
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*/
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#define PIN_SERIAL2_RX (-1)
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#define PIN_SERIAL2_TX (-1)
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/*
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* Pinout for SX126x
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*/
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#define USE_SX1262
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#ifdef XIAO_BLE_LEGACY_PINOUT
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// Legacy xiao_ble variant pinout for third-party SX126x modules e.g. EBYTE E22
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#define SX126X_CS D0
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#define SX126X_DIO1 D1
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#define SX126X_BUSY D2
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#define SX126X_RESET D3
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#define SX126X_RXEN D7
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#elif defined(SEEED_XIAO_WIO_BTB)
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// Wio-SX1262 for XIAO with 30-pin board-to-board connector
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// https://files.seeedstudio.com/products/SenseCAP/Wio_SX1262/Schematic_Diagram_Wio-SX1262_for_XIAO.pdf
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#define SX126X_CS D3
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#define SX126X_DIO1 D0
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#define SX126X_BUSY D1
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#define SX126X_RESET D2
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#define SX126X_RXEN D4
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#else
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// Wio-SX1262 for XIAO (standalone SKU 113010003 or nRF52840 kit SKU 102010710)
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// https://files.seeedstudio.com/products/SenseCAP/Wio_SX1262/Wio-SX1262%20for%20XIAO%20V1.0_SCH.pdf
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#define SX126X_CS D4
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#define SX126X_DIO1 D1
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#define SX126X_BUSY D3
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#define SX126X_RESET D2
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#define SX126X_RXEN D5
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#endif
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// Common pinouts for all SX126x pinouts above
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#define SX126X_TXEN RADIOLIB_NC
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#define SX126X_DIO2_AS_RF_SWITCH // DIO2 is used to control the TX side of the RF switch
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#define SX126X_DIO3_TCXO_VOLTAGE 1.8
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/*
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* SPI Interfaces
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* Defined after pinout for SX1262x to factor in CS pinout variations
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*/
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#define SPI_INTERFACES_COUNT 1
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#define PIN_SPI_MISO D9
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#define PIN_SPI_MOSI D10
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#define PIN_SPI_SCK D8
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static const uint8_t SS = SX126X_CS;
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static const uint8_t MOSI = PIN_SPI_MOSI;
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static const uint8_t MISO = PIN_SPI_MISO;
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static const uint8_t SCK = PIN_SPI_SCK;
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/*
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* GPS
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*/
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// GPS L76K
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#ifdef GPS_L76K
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#define PIN_GPS_RX D6
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#define PIN_GPS_TX D7
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#define HAS_GPS 1
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#define GPS_THREAD_INTERVAL 50
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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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#define PIN_GPS_STANDBY D0
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#else
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#define PIN_SERIAL1_RX (-1)
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#define PIN_SERIAL1_TX (-1)
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#endif
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/*
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* Battery
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*/
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#define BATTERY_PIN PIN_VBAT // P0.31: VBAT voltage divider
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#define ADC_MULTIPLIER (3) // ... R17=1M, R18=510k
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#define ADC_CTRL VBAT_ENABLE // P0.14: VBAT voltage divider
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#define ADC_CTRL_ENABLED LOW // ... sink
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#define EXT_CHRG_DETECT (23) // P0.17: Charge LED
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#define EXT_CHRG_DETECT_VALUE LOW // ... BQ25101 ~CHG indicates charging
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#define HICHG (22) // P0.13: BQ25101 ISET 100mA instead of 50mA
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#define BATTERY_SENSE_RESOLUTION_BITS (10)
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/*
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* Wire Interfaces
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* Keep this section after potentially conflicting pin definitions
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*/
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#define I2C_NO_RESCAN // I2C is a bit finicky, don't scan too much
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#define WIRE_INTERFACES_COUNT 1
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#if defined(XIAO_BLE_LEGACY_PINOUT)
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// Used for I2C by DIY xiao_ble variant
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#define PIN_WIRE_SDA D4
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#define PIN_WIRE_SCL D5
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#elif !defined(GPS_L76K)
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// If D6 and D7 are free, I2C is probably the most versatile assignment
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#define PIN_WIRE_SDA D6
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#define PIN_WIRE_SCL D7
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#else
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// Internal LSM6DS3TR on XIAO nRF52840 Series
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#define PIN_WIRE_SDA (17)
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#define PIN_WIRE_SCL (16)
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#endif
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static const uint8_t SDA = PIN_WIRE_SDA;
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static const uint8_t SCL = PIN_WIRE_SCL;
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/*
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* Buttons
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* Keep this section after potentially conflicting pin definitions
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* because D0 has multiple possible conflicts with various XIAO modules:
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* - PIN_GPS_STANDBY on the L76K GNSS Module
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* - DIO1 on the Wio-SX1262 - 30-pin board-to-board connector version
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* - SX1262X CS on XIAO BLE legacy pinout
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*/
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#if !defined(GPS_L76K) && !defined(SEEED_XIAO_WIO_BTB) && !defined(XIAO_BLE_LEGACY_PINOUT)
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#define BUTTON_PIN D0
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#endif
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#ifdef __cplusplus
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}
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#endif
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/*----------------------------------------------------------------------------
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* Arduino objects - C++ only
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*----------------------------------------------------------------------------*/
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#endif
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