arduino_iomap.h

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/*
 * Copyright (C) 2024 TU Dresden
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#ifndef ARDUINO_IOMAP_H
#define ARDUINO_IOMAP_H
 
#include "periph/gpio.h"
#include "periph/adc.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define ARDUINO_UART_DEV    UART_UNDEF
#define ARDUINO_SPI_DEV     SPI_DEV(0)
#define ARDUINO_I2C_DEV     I2C_DEV(0)
#define ARDUINO_LED     (11)
/* Left pins */
#define ARDUINO_PIN_0       GPIO_PIN(0,  2)
#define ARDUINO_PIN_1       GPIO_PIN(0,  3)
#define ARDUINO_PIN_2       GPIO_PIN(0, 28)
#define ARDUINO_PIN_3       GPIO_PIN(0, 29)
#define ARDUINO_PIN_4       GPIO_PIN(0,  4)
#define ARDUINO_PIN_5       GPIO_PIN(0,  5)
#define ARDUINO_PIN_6       GPIO_PIN(1, 11)
 
/* Right side */
#define ARDUINO_PIN_7       GPIO_PIN(1, 12)
#define ARDUINO_PIN_8       GPIO_PIN(1, 13)
#define ARDUINO_PIN_9       GPIO_PIN(1, 14)
#define ARDUINO_PIN_10      GPIO_PIN(1, 15)
 
/* Internal (LEDs) */
#define ARDUINO_PIN_11      GPIO_PIN(0, 26)
#define ARDUINO_PIN_12      GPIO_PIN(0,  6)
#define ARDUINO_PIN_13      GPIO_PIN(0, 30)
 
#define ARDUINO_PIN_LAST    13
#define ARDUINO_PIN_A0      ARDUINO_PIN_0
#define ARDUINO_PIN_A1      ARDUINO_PIN_1
#define ARDUINO_PIN_A2      ARDUINO_PIN_2
#define ARDUINO_PIN_A3      ARDUINO_PIN_3
#define ARDUINO_PIN_A4      ARDUINO_PIN_4
#define ARDUINO_PIN_A5      ARDUINO_PIN_5
/* The Seeed Studio XIAO nRF52840 has a fixed ADC to GPIO mapping:
 *
 * nRF  | MCU pin   | Exposed as Arduino pin
 * -----|-----------|-----------------------
 * AIN0 | P0.02     | A0 (D0)
 * AIN1 | P0.03     | A1 (D1)
 * AIN2 | P0.04     | A4 (D4)
 * AIN3 | P0.05     | A5 (D5)
 * AIN4 | P0.28     | A2 (D2)
 * AIN5 | P0.29     | A3 (D3)
 * AIN6 | P0.30     | - (D13)
 * AIN7 | P0.31     | - (-)
 */
#define ARDUINO_A0          ADC_LINE(0)
#define ARDUINO_A1          ADC_LINE(1)
#define ARDUINO_A2          ADC_LINE(4)
#define ARDUINO_A3          ADC_LINE(5)
#define ARDUINO_A4          ADC_LINE(2)
#define ARDUINO_A5          ADC_LINE(3)
 
#define ARDUINO_ANALOG_PIN_LAST 5
#ifdef __cplusplus
}
#endif
 
#endif /* ARDUINO_IOMAP_H */