PY32F002B/Src/user/emf_hal/hal_gpio.c

/* 
*   BSD 2-Clause License
*   Copyright (c) 2022, LiteEMF
*   All rights reserved.
*   This software component is licensed by LiteEMF under BSD 2-Clause license,
*   the "License"; You may not use this file except in compliance with the
*   License. You may obtain a copy of the License at:
*       opensource.org/licenses/BSD-2-Clause
* 
*/

/************************************************************************************************************
**	Description:	
************************************************************************************************************/
#include  "api/api_gpio.h"
#include  "py32f002b_ll_bus.h"
/******************************************************************************************************
** Defined
*******************************************************************************************************/

/******************************************************************************************************
**	static Parameters
*******************************************************************************************************/

/******************************************************************************************************
**	public Parameters
*******************************************************************************************************/

/*****************************************************************************************************
**	static Function
******************************************************************************************************/

/*****************************************************************************************************
**  Function
******************************************************************************************************/

/*******************************************************************
** Parameters:		
** Returns:	
** Description:		
*******************************************************************/

GPIO_TypeDef * get_gpio_port(pin_t io)
{
    GPIO_TypeDef * base = NULL;
    switch (io&HW_PORT_MASK)
    {
    case HW_PORTA_BASE:
        base = GPIOA;
        break;
    case HW_PORTB_BASE:
        base = GPIOB;
        break;
    case HW_PORTC_BASE:
        base = GPIOC;
        break;
    default:
        break;
    }
    return base;
}

uint32_t get_gpio_rcc(pin_t io)
{
    uint32_t rcc = 0;
    switch (io&HW_PORT_MASK)
    {
    case HW_PORTA_BASE:
        LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA);
        break;
    case HW_PORTB_BASE:
        LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOB);
        break;
    case HW_PORTC_BASE:
        LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOC);
        break;
    default:
        break;
    }
    return rcc;
}

uint32_t get_gpio_pin(pin_t io)
{
    return 1<<(io&HW_PIN_MASK);
}

void hal_gpio_mode(pin_t pin, uint8_t mode)
{
}
void hal_gpio_dir(pin_t pin, pin_dir_t dir, pin_pull_t pull)
{
    if((uint32_t)-1 == pin) return;
    GPIO_TypeDef * gpiox = get_gpio_port((pin_t)pin);

    LL_GPIO_InitTypeDef GPIO_InitStructure = {0};

    get_gpio_rcc((pin_t)pin);

	GPIO_InitStructure.Pin = get_gpio_pin(pin);
	GPIO_InitStructure.Mode = (dir == PIN_OUT ? LL_GPIO_MODE_OUTPUT : LL_GPIO_MODE_INPUT);
	GPIO_InitStructure.Speed = LL_GPIO_SPEED_FREQ_LOW;
	GPIO_InitStructure.OutputType = (pull == PIN_PULL_OD ? LL_GPIO_OUTPUT_OPENDRAIN : LL_GPIO_OUTPUT_PUSHPULL);
	GPIO_InitStructure.Pull = (pull & 0x2);
	GPIO_InitStructure.Alternate = LL_GPIO_AF_7;
    LL_GPIO_Init(get_gpio_port((pin_t)pin), &GPIO_InitStructure);
}
uint32_t hal_gpio_in(pin_t pin)
{
	return LL_GPIO_IsInputPinSet(get_gpio_port(pin), get_gpio_pin(pin));
}
void hal_gpio_out(pin_t pin, uint8_t value)
{
	if(value){
		LL_GPIO_SetOutputPin(get_gpio_port(pin), get_gpio_pin(pin));
	}else{
		LL_GPIO_ResetOutputPin(get_gpio_port(pin), get_gpio_pin(pin));
	}
}