thinknode_m3: initial commit

variants/thinknode_m3/variant.h

@@ -0,0 +1,109 @@
+/*
+ * variant.h
+ * Copyright (C) 2023 Seeed K.K.
+ * MIT License
+ */
+
+#pragma once
+
+#include "WVariant.h"
+
+////////////////////////////////////////////////////////////////////////////////
+// Low frequency clock source
+
+#define USE_LFXO    // 32.768 kHz crystal oscillator
+#define VARIANT_MCK (64000000ul)
+// #define USE_LFRC    // 32.768 kHz RC oscillator
+
+////////////////////////////////////////////////////////////////////////////////
+// Number of pins
+
+#define PINS_COUNT              (48)
+#define NUM_DIGITAL_PINS        (48)
+#define NUM_ANALOG_INPUTS       (1)
+#define NUM_ANALOG_OUTPUTS      (0)
+
+////////////////////////////////////////////////////////////////////////////////
+// Power
+
+#define NRF_APM                                 // detect usb power
+
+
+#define EXT_CHRG_DETECT         (32)            // P1.3
+#define EXT_PWR_DETECT          (31)             // P0.5
+
+#define PIN_VBAT_READ           (5) 
+#define AREF_VOLTAGE            (2.4f)
+#define ADC_MULTIPLIER          (2.0)           //(1.75f)
+// 2.0 gives more coherent value, 4.2V when charged, needs tweaking
+#define ADC_RESOLUTION          (12)
+#define ADC_MAX                 (4096)
+
+#define EEPROM_POWER            (7)
+#define BAT_POWER               (17)
+#define PIN_PWR_EN              (16)
+
+
+////////////////////////////////////////////////////////////////////////////////
+// UART pin definition
+
+#define PIN_SERIAL1_RX          PIN_GPS_TX
+#define PIN_SERIAL1_TX          PIN_GPS_RX
+
+////////////////////////////////////////////////////////////////////////////////
+// I2C pin definition
+
+#define HAS_WIRE                (1)
+#define WIRE_INTERFACES_COUNT   (1)
+
+#define PIN_WIRE_SDA            (26)             // P0.26
+#define PIN_WIRE_SCL            (27)             // P0.27
+#define I2C_NO_RESCAN
+
+////////////////////////////////////////////////////////////////////////////////
+// SPI pin definition
+
+#define SPI_INTERFACES_COUNT    (1)
+
+#define PIN_SPI_MISO            (47)            // P1.15
+#define PIN_SPI_MOSI            (46)            // P1.14
+#define PIN_SPI_SCK             (45)            // P1.13
+#define PIN_SPI_NSS             (44)            // P1.12
+
+////////////////////////////////////////////////////////////////////////////////
+// Builtin LEDs
+
+#define LED_POWER               (29)
+#define LED_BLUE                (-1)            // No blue led
+#define PIN_LED_BLUE            (37)
+#define PIN_LED_GREEN           (35)            // P0.24
+#define PIN_LED_RED             (33)
+#define LED_PIN                 PIN_LED_GREEN
+#define LED_BUILTIN             PIN_LED_BLUE
+#define LED_STATE_ON            LOW
+
+////////////////////////////////////////////////////////////////////////////////
+// Builtin buttons
+
+#define PIN_BUTTON1             (12)             // P0.12
+#define BUTTON_PIN              PIN_BUTTON1
+
+////////////////////////////////////////////////////////////////////////////////
+// GPS
+
+#define HAS_GPS                     1
+#define PIN_GPS_RX                  (22)    
+#define PIN_GPS_TX                  (20)
+
+#define PIN_GPS_POWER               (14)
+#define PIN_GPS_EN                  (21)            // STANDBY
+#define PIN_GPS_RESET               (25)            // REINIT
+#define GPS_RESET_ACTIVE            LOW
+#define GPS_EN_ACTIVE               HIGH
+#define GPS_BAUDRATE                9600
+
+////////////////////////////////////////////////////////////////////////////////
+// Buzzer
+
+#define BUZZER_EN               (37)            // P1.5
+#define BUZZER_PIN              (25)            // P0.25