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Tautvydas Belgeras 2018-06-05 16:16:17 +03:00
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component/common/mbed/targets/hal/rtl8711b/gpio_irq_api.c Normal file
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/** mbed Microcontroller Library
******************************************************************************
* @file gpio_irq_api.c
* @author
* @version V1.0.0
* @date 2016-08-01
* @brief This file provides mbed API for GPIO IRQ.
******************************************************************************
* @attention
*
* This module is a confidential and proprietary property of RealTek and
* possession or use of this module requires written permission of RealTek.
*
* Copyright(c) 2016, Realtek Semiconductor Corporation. All rights reserved.
******************************************************************************
*/
#include "objects.h"
#include "pinmap.h"
#include "gpio_irq_api.h"
#include "gpio_irq_ex_api.h"
/**
* @brief Initializes the GPIO device interrupt mode, include mode/trigger/polarity registers.
* @param obj: gpio irq object define in application software.
* @param pin: PinName according to pinmux spec.
* @note this API only works for Port A pins
* @param handler: Interrupt handler to be assigned to the specified pin.
* @param id: handler id.
* @retval none
*/
int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id)
{
GPIO_InitTypeDef GPIO_InitStruct;
if (pin == NC) return -1;
obj->pin = pin;
GPIO_InitStruct.GPIO_Pin = obj->pin;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_INT;
GPIO_InitStruct.GPIO_ITTrigger = GPIO_INT_Trigger_EDGE;
GPIO_InitStruct.GPIO_ITPolarity = GPIO_INT_POLARITY_ACTIVE_LOW;
InterruptRegister(GPIO_INTHandler, GPIO_IRQ, NULL, 10);
InterruptEn(GPIO_IRQ, 10);
GPIO_Init(&GPIO_InitStruct);
GPIO_UserRegIrq(GPIO_InitStruct.GPIO_Pin, (VOID*) handler, (VOID*) id);
return 0;
}
/**
* @brief Deinitializes the GPIO device interrupt mode, include mode/trigger/polarity registers.
* @param obj: gpio irq object define in application software.
* @note this API only works for Port A pins
* @retval none
*/
void gpio_irq_free(gpio_irq_t *obj)
{
GPIO_DeInit(obj->pin);
}
/**
* @brief Enable/Disable gpio interrupt.
* @param obj: gpio irq object define in application software.
* @param event: gpio interrupt event, this parameter can be one of the following values:
* @arg IRQ_RISE: rising edge interrupt event
* @arg IRQ_FALL: falling edge interrupt event
* @arg IRQ_LOW: low level interrupt event
* @arg IRQ_HIGH: high level interrupt event
* @arg IRQ_NONE: no interrupt event
* @param enable: this parameter can be one of the following values:
* @arg 0 disable gpio interrupt
* @arg 1 enable gpio interrupt
* @retval none
*/
void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable)
{
u32 GPIO_ITTrigger;
u32 GPIO_ITPolarity;
u32 GPIO_ITDebounce;
switch(event) {
case IRQ_RISE:
GPIO_ITTrigger = GPIO_INT_Trigger_EDGE;
GPIO_ITPolarity = GPIO_INT_POLARITY_ACTIVE_HIGH;
break;
case IRQ_FALL:
GPIO_ITTrigger = GPIO_INT_Trigger_EDGE;
GPIO_ITPolarity = GPIO_INT_POLARITY_ACTIVE_LOW;
break;
case IRQ_LOW:
GPIO_ITTrigger = GPIO_INT_Trigger_LEVEL;
GPIO_ITPolarity = GPIO_INT_POLARITY_ACTIVE_LOW;
break;
case IRQ_HIGH:
GPIO_ITTrigger = GPIO_INT_Trigger_LEVEL;
GPIO_ITPolarity = GPIO_INT_POLARITY_ACTIVE_HIGH;
break;
case IRQ_NONE:
// ?
break;
default:
break;
}
if (enable) {
GPIO_INTMode(obj->pin, ENABLE, GPIO_ITTrigger, GPIO_ITPolarity, GPIO_INT_DEBOUNCE_ENABLE);
} else {
GPIO_INTMode(obj->pin, DISABLE, 0, 0, 0);
}
}
/**
* @brief Enable gpio interrupt.
* @param obj: gpio irq object define in application software.
* @retval none
*/
void gpio_irq_enable(gpio_irq_t *obj)
{
GPIO_INTConfig(obj->pin, ENABLE);
}
/**
* @brief Disable gpio interrupt.
* @param obj: gpio irq object define in application software.
* @retval none
*/
void gpio_irq_disable(gpio_irq_t *obj)
{
GPIO_INTConfig(obj->pin, DISABLE);
}
/**
* @brief Deinitializes the GPIO device interrupt mode, include mode/trigger/polarity registers.
* @param obj: gpio irq object define in application software.
* @retval none
*/
void gpio_irq_deinit(gpio_irq_t *obj)
{
GPIO_DeInit(obj->pin);
}
/**
* @brief Sets pull type to the selected interrupt pin.
* @param obj: gpio irq object define in application software.
* @param pull_type: this parameter can be one of the following values:
* @arg PullNone: HighZ, user can input high or low use this pin
* @arg OpenDrain(is OpenDrain output): no pull + OUT + GPIO[gpio_bit] = 0
* @arg PullDown: pull down
* @arg PullUp: pull up
* @retval none
*/
void gpio_irq_pull_ctrl(gpio_irq_t *obj, PinMode pull_type)
{
u32 GPIO_PuPd;
switch (pull_type) {
case PullNone:/* No driver -> Input & High Impendance */
GPIO_PuPd = GPIO_PuPd_NOPULL;
break;
case OpenDrain:/* No driver -> Output Low */
GPIO_PuPd = GPIO_PuPd_NOPULL;
break;
case PullDown:
GPIO_PuPd = GPIO_PuPd_DOWN;
break;
case PullUp:
GPIO_PuPd = GPIO_PuPd_UP;
break;
default:
GPIO_PuPd = GPIO_PuPd_NOPULL;
break;
}
PAD_PullCtrl(obj->pin, GPIO_PuPd);
}
/**
* @brief Enable the specified gpio interrupt event.
* @param obj: gpio irq object define in application software.
* @param event: gpio interrupt event, this parameter can be one of the following values:
* @arg IRQ_RISE: rising edge interrupt event
* @arg IRQ_FALL: falling edge interrupt event
* @arg IRQ_LOW: low level interrupt event
* @arg IRQ_HIGH: high level interrupt event
* @arg IRQ_NONE: no interrupt event
* @retval none
*/
void gpio_irq_set_event(gpio_irq_t *obj, gpio_irq_event event)
{
gpio_irq_set(obj, event, ENABLE);
}
/******************* (C) COPYRIGHT 2016 Realtek Semiconductor *****END OF FILE****/