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/*
* Copyright (c) 2020-2020, BLUETRUM Development Team
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "ab32vg1_hal.h"
#ifdef HAL_GPIO_MODULE_ENABLED
#if 0
#define HAL_LOG(...) hal_printf(__VA_ARGS__)
#else
#define HAL_LOG(...)
#endif
void gpio_afinit(hal_sfr_t gpiox, uint8_t pin, uint32_t alternate, uint32_t af_con)
{
uint32_t is_rx_map_tx = (alternate & UT1RXMAP_TX) || (alternate & UT0RXMAP_TX);
if ((af_con & 0xf0u) != GPIO_AFDIS) {
gpiox[GPIOxFEN] |= BIT(pin);
switch (is_rx_map_tx)
{
case UT1RXMAP_TX:
FUNCMCONx(GPIO_GET_AFCON(af_con)) |= GPIO_AF_MAP_CLR(UT1RXMAP_AF);
break;
case UT0RXMAP_TX:
FUNCMCONx(GPIO_GET_AFCON(af_con)) |= GPIO_AF_MAP_CLR(UT0RXMAP_AF);
break;
default:
break;
}
FUNCMCONx(GPIO_GET_AFCON(af_con)) |= GPIO_AF_MAP_CLR(af_con & 0x1f);
FUNCMCONx(GPIO_GET_AFCON(af_con)) |= alternate;
HAL_LOG("af_con=0x%X AFCON=%d alternate=%d\n", af_con, GPIO_GET_AFCON(af_con), (af_con & 0x1f));
}
}
/**
* @brief Initialize the gpio.
*
* @param port GPIO port(GPIOAN, GPIOBN, GPIOEN, GPIOFN).
* @param gpio_init the configuration of the specified GPIO peripheral.
*/
void hal_gpio_init(hal_sfr_t gpiox, gpio_init_t gpio_init)
{
uint8_t iocurrent = 0;
if (gpio_init == HAL_NULL) {
return;
}
for (iocurrent = 0; iocurrent < 8; iocurrent++) {
if ((gpio_init->pin & BIT(iocurrent)) == 0) {
continue;
}
gpio_afinit(gpiox, iocurrent, gpio_init->alternate, gpio_init->af_con);
switch (gpio_init->dir)
{
case GPIO_DIR_INPUT:
/* When set to input, clear all pull-ups of the port. */
gpiox[GPIOxDIR] |= BIT(iocurrent);
gpiox[GPIOxPU] &= ~BIT(iocurrent);
gpiox[GPIOxPU200K] &= ~BIT(iocurrent);
gpiox[GPIOxPD200K] &= ~BIT(iocurrent);
gpiox[GPIOxPU300K] &= ~BIT(iocurrent);
gpiox[GPIOxPD300K] &= ~BIT(iocurrent);
switch (gpio_init->pull)
{
case GPIO_PULLUP:
gpiox[GPIOxPD] &= ~BIT(iocurrent);
gpiox[GPIOxPU] |= BIT(iocurrent);
break;
case GPIO_PULLDOWN:
gpiox[GPIOxPU] &= ~BIT(iocurrent);
gpiox[GPIOxPD] |= BIT(iocurrent);
break;
case GPIO_NOPULL:
gpiox[GPIOxPU] &= ~BIT(iocurrent);
gpiox[GPIOxPD] &= ~BIT(iocurrent);
default:
break;
}
break;
case GPIO_DIR_OUTPUT:
gpiox[GPIOxDIR] &= ~BIT(iocurrent);
break;
default:
break;
}
switch (gpio_init->de)
{
case GPIO_DIGITAL:
gpiox[GPIOxDE] |= BIT(iocurrent);
break;
case GPIO_ANALOG:
gpiox[GPIOxDE] &= ~BIT(iocurrent);
break;
default:
break;
}
}
}
/**
* @brief Read the specified input port pin.
*
* @param port GPIO port(GPIOAN, GPIOBN, GPIOEN, GPIOFN).
* @param pin This parameter can be GPIO_PIN_x where x can be (0.15).
* @return uint8_t The input port pin value.
*/
uint8_t hal_gpio_read(hal_sfr_t gpiox, uint8_t pin)
{
return ((gpiox[GPIOx] & BIT(pin)) != GPIO_PIN_LOW) ? GPIO_PIN_HIGH : GPIO_PIN_LOW;
}
/**
* @brief Set or clear the selected data port bit.
*
* @param port GPIO port(GPIOAN, GPIOBN, GPIOEN, GPIOFN).
* @param pin This parameter can be GPIO_PIN_x where x can be (0.15).
* @param state specifies the value to be written to the selected bit.
* @arg GPIO_PIN_LOW:
* @arg GPIO_PIN_HIGH:
*/
void hal_gpio_write(hal_sfr_t gpiox, uint8_t pin, uint8_t state)
{
if (state == GPIO_PIN_LOW) {
gpiox[GPIOx] &= ~BIT(pin);
} else {
gpiox[GPIOx] |= BIT(pin);
}
}
/**
* @brief Toggle the specified GPIO pin.
*
* @param port GPIO port(GPIOAN, GPIOBN, GPIOEN, GPIOFN).
* @param pin This parameter can be GPIO_PIN_x where x can be (0.15).
*/
void hal_gpio_toggle(hal_sfr_t gpiox, uint8_t pin)
{
gpiox[GPIOx] ^= BIT(pin);
}
#endif
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