/*
 * Copyright (C) 2022 Benjamin Valentin
 *
 * 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.
 */

/**
 * @ingroup     boards_esp32s2-wemos-mini
 * @brief       Peripheral configurations for Wemos S2 mini boards
 * @{
 *
 * The peripheral configurations in this file can be used for Espressif
 * Wemos S2 mini boards.
 *
 * @file
 * @author      Benjamin Valentin <benjamin.valentin@ml-pa.com>
 */

#ifndef PERIPH_CONF_H
#define PERIPH_CONF_H

#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @name    ADC and DAC channel configuration
 * @{
 */
/**
 * @brief   Declaration of GPIOs that can be used as ADC channels
 *
 * @note As long as the GPIOs listed in ADC_GPIOS are not initialized as ADC
 * channels with the `adc_init` function, they can be used for other
 * purposes.
 */
#ifndef ADC_GPIOS
#define ADC_GPIOS   { GPIO3,  GPIO1,  GPIO2,  GPIO4, GPIO5, GPIO6, GPIO8, GPIO10 }
#endif

/**
 * @brief   Declaration of GPIOs that can be used as DAC channels
 *
 * @note As long as the GPIOs listed in DAC_GPIOS are not initialized as DAC
 * channels with the `dac_init` function, they can be used for other
 * purposes.
 */
#ifndef DAC_GPIOS
#define DAC_GPIOS   { GPIO17, GPIO18 }
#endif
/** @} */

/**
 * @name   I2C configuration
 *
 * Only I2C interface I2C_DEV(0) is used.
 *
 * @note The GPIOs listed in the configuration are only initialized as I2C
 * signals when module `periph_i2c` is used. Otherwise they are not
 * allocated and can be used for other purposes.
 *
 * @{
 */
#ifndef I2C0_SPEED
#define I2C0_SPEED  I2C_SPEED_FAST  /**< I2C bus speed of I2C_DEV(0) */
#endif
#ifndef I2C0_SCL
#define I2C0_SCL    GPIO35          /**< SCL signal of I2C_DEV(0) */
#endif
#ifndef I2C0_SDA
#define I2C0_SDA    GPIO33          /**< SDA signal of I2C_DEV(0) */
#endif
/** @} */

/**
 * @name   PWM channel configuration
 *
 * @note As long as the according PWM device is not initialized with
 * the `pwm_init`, the GPIOs declared for this device can be used
 * for other purposes.
 *
 * @{
 */

/**
 * @brief Declaration of the channels for device PWM_DEV(0),
 *        at maximum PWM_CHANNEL_NUM_DEV_MAX.
 */
#ifndef PWM0_GPIOS
#define PWM0_GPIOS  { GPIO13, GPIO14, GPIO15 }
#endif
/** @} */

/**
 * @name    SPI configuration
 *
 * @note The GPIOs listed in the configuration are first initialized as SPI
 * signals when the corresponding SPI interface is used for the first time
 * by either calling the `spi_init_cs` function or the `spi_acquire`
 * function. That is, they are not allocated as SPI signals before and can
 * be used for other purposes as long as the SPI interface is not used.
 * @{
 */
#ifndef SPI0_CTRL
#define SPI0_CTRL   FSPI    /**< FSPI is used as SPI_DEV(0) */
#endif
#ifndef SPI0_SCK
#define SPI0_SCK    GPIO7   /**< FSPI SCK (pin FSPICLK) */
#endif
#ifndef SPI0_MISO
#define SPI0_MISO   GPIO9   /**< FSPI MISO (pin FSPIQ) */
#endif
#ifndef SPI0_MOSI
#define SPI0_MOSI   GPIO11  /**< FSPI MOSI (pin FSPID) */
#endif
#ifndef SPI0_CS0
#define SPI0_CS0    GPIO12  /**< FSPI CS0 (pin FSPICS0) */
#endif
/** @} */

/**
 * @name   UART configuration
 *
 * ESP32-S2 provides 2 UART interfaces at maximum:
 *
 * UART_DEV(0) uses Wemos standard pinout.<br>
 * UART_DEV(1) is not used.<br>
 *
 * @{
 */
#define UART0_TXD   GPIO39  /**< direct I/O pin for UART_DEV(0) TxD */
#define UART0_RXD   GPIO37  /**< direct I/O pin for UART_DEV(0) RxD */

/** @} */

#ifdef __cplusplus
} /* end extern "C" */
#endif

/* include common peripheral definitions as last step */
#include "periph_conf_common.h"

#endif /* PERIPH_CONF_H */
/** @} */