gpio_mux.h

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/*
 * Copyright (C) 2020 iosabi
 *
 * 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.
 */
 
#pragma once

 
#include <stdint.h>
#include "periph_cpu.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#define GPIO_T_ADDR_BASE(pin) (GPIOA_BASE + ((pin) & 0xf000u))

#define GPIO_T_ADDR(pin) ((GPIO_Type *)(GPIO_T_ADDR_BASE(pin)))

#define GPIO_T_PORT(pin) ((gpio_t)(pin) >> 12u)

#define GPIO_T_PIN(pin) ((pin) & 0x00ffu)
 
#if defined(GPIOB_BASE) && (GPIO_T_ADDR_BASE(GPIO_PIN(1, 1)) != GPIOB_BASE)
#error "GPIO_T_ADDR(GPIO_PIN(1, x)) must be the GPIOB address"
#endif

#define GPIO_T_IS_HWCS(pin) (((pin) & 0xff00u) == 0x8000)

#define GPIO_T_HWCS(pin) ((pin) & 0x0003u)

void gpio_init_mux(gpio_t pin, uint32_t func);
 
#ifdef __cplusplus
}
#endif