mirror of
https://github.com/RIOT-OS/RIOT.git
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133 lines
3.0 KiB
C
133 lines
3.0 KiB
C
/*
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* Copyright (C) 2024 TU Dresden
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup boards_seeedstudio-xiao-nrf52840
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* @{
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*
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* @file
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* @brief Mapping from MCU pins to Arduino pins
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*
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* You can use the defines in this file for simplified interaction with the
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* Arduino specific pin numbers.
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*
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* @author Mikolai Gütschow <mikolai.guetschow@tu-dresden.de>
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*/
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#ifndef ARDUINO_IOMAP_H
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#define ARDUINO_IOMAP_H
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#include "periph/gpio.h"
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#include "periph/adc.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @name XIAO's UART devices
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* @{
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* @brief Arduino's Serial uses USB-CDC-ACM stdio by default
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*/
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#define ARDUINO_UART_DEV UART_UNDEF
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/** @} */
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/**
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* @name XIAO's SPI buses
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* @{
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*/
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#define ARDUINO_SPI_DEV SPI_DEV(0)
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/** @} */
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/**
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* @name XIAO's I2C buses
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* @{
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*/
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#define ARDUINO_I2C_DEV I2C_DEV(0)
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/** @} */
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/**
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* @name XIAO's on-board LED (LED_BUILTIN)
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* @{
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*/
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#define ARDUINO_LED (11)
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/** @} */
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/**
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* @name Mapping of MCU pins to Arduino pins
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* @{
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*/
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/* Left pins */
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#define ARDUINO_PIN_0 GPIO_PIN(0, 2)
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#define ARDUINO_PIN_1 GPIO_PIN(0, 3)
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#define ARDUINO_PIN_2 GPIO_PIN(0, 28)
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#define ARDUINO_PIN_3 GPIO_PIN(0, 29)
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#define ARDUINO_PIN_4 GPIO_PIN(0, 4)
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#define ARDUINO_PIN_5 GPIO_PIN(0, 5)
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#define ARDUINO_PIN_6 GPIO_PIN(1, 11)
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/* Right side */
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#define ARDUINO_PIN_7 GPIO_PIN(1, 12)
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#define ARDUINO_PIN_8 GPIO_PIN(1, 13)
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#define ARDUINO_PIN_9 GPIO_PIN(1, 14)
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#define ARDUINO_PIN_10 GPIO_PIN(1, 15)
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/* Internal (LEDs) */
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#define ARDUINO_PIN_11 GPIO_PIN(0, 26)
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#define ARDUINO_PIN_12 GPIO_PIN(0, 6)
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#define ARDUINO_PIN_13 GPIO_PIN(0, 30)
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#define ARDUINO_PIN_LAST 13
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/** @} */
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/**
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* @name Aliases for analog pins
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* @{
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*/
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#define ARDUINO_PIN_A0 ARDUINO_PIN_0
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#define ARDUINO_PIN_A1 ARDUINO_PIN_1
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#define ARDUINO_PIN_A2 ARDUINO_PIN_2
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#define ARDUINO_PIN_A3 ARDUINO_PIN_3
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#define ARDUINO_PIN_A4 ARDUINO_PIN_4
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#define ARDUINO_PIN_A5 ARDUINO_PIN_5
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/** @} */
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/**
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* @name Mapping of Arduino analog pins to RIOT ADC lines
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* @{
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*/
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/* The Seeed Studio XIAO nRF52840 has a fixed ADC to GPIO mapping:
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*
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* nRF | MCU pin | Exposed as Arduino pin
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* -----|-----------|-----------------------
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* AIN0 | P0.02 | A0 (D0)
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* AIN1 | P0.03 | A1 (D1)
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* AIN2 | P0.04 | A4 (D4)
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* AIN3 | P0.05 | A5 (D5)
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* AIN4 | P0.28 | A2 (D2)
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* AIN5 | P0.29 | A3 (D3)
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* AIN6 | P0.30 | - (D13)
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* AIN7 | P0.31 | - (-)
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*/
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#define ARDUINO_A0 ADC_LINE(0)
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#define ARDUINO_A1 ADC_LINE(1)
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#define ARDUINO_A2 ADC_LINE(4)
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#define ARDUINO_A3 ADC_LINE(5)
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#define ARDUINO_A4 ADC_LINE(2)
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#define ARDUINO_A5 ADC_LINE(3)
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#define ARDUINO_ANALOG_PIN_LAST 5
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/** @} */
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#ifdef __cplusplus
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}
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#endif
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#endif /* ARDUINO_IOMAP_H */
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/** @} */
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