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Tautvydas Belgeras
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227
component/common/mbed/targets/hal/rtl8711b/gpio_api.c
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227
component/common/mbed/targets/hal/rtl8711b/gpio_api.c
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/** mbed Microcontroller Library
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******************************************************************************
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* @file gpio_api.c
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* @author
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* @version V1.0.0
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* @date 2016-08-01
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* @brief This file provides mbed API for GPIO.
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******************************************************************************
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* @attention
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*
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* This module is a confidential and proprietary property of RealTek and
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* possession or use of this module requires written permission of RealTek.
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*
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* Copyright(c) 2016, Realtek Semiconductor Corporation. All rights reserved.
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******************************************************************************
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*/
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#include "objects.h"
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#include "pinmap.h"
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#include "gpio_api.h"
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/**
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* @brief Set the given pin as GPIO.
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* @param pin: PinName according to pinmux spec.
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* @retval The given pin with GPIO function
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*/
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uint32_t gpio_set(PinName pin)
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{
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u32 ip_pin;
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assert_param(pin != (PinName)NC);
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pin_function(pin, 0);
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ip_pin = pin;
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return ip_pin;
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}
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/**
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* @brief Initializes the GPIO device, include mode/direction/pull control registers.
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* @param obj: gpio object define in application software.
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* @param pin: PinName according to pinmux spec.
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* @retval none
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*/
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void gpio_init(gpio_t *obj, PinName pin)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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if (pin == (PinName)NC)
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return;
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obj->pin = pin;
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GPIO_InitStruct.GPIO_Pin = obj->pin;
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GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN;
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GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_Init(&GPIO_InitStruct);
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}
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/**
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* @brief Set GPIO mode.
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* @param obj: gpio object define in application software.
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* @param mode: this parameter can be one of the following values:
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* @arg PullNone: HighZ, user can input high or low use this pin
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* @arg OpenDrain(is OpenDrain output): no pull + OUT + GPIO[gpio_bit] = 0
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* @arg PullDown: pull down
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* @arg PullUp: pull up
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* @retval none
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*/
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void gpio_mode(gpio_t *obj, PinMode mode)
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{
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u32 GPIO_PuPd;
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switch (mode) {
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case PullNone:/* No driver -> Input & High Impendance */
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GPIO_PuPd = GPIO_PuPd_NOPULL;
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//GPIO_Direction(obj->pin, GPIO_Mode_IN);
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break;
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case OpenDrain:/* No driver -> Output Low */
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GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_Direction(obj->pin, GPIO_Mode_OUT);
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GPIO_WriteBit(obj->pin, GPIO_PIN_LOW);
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break;
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case PullDown:
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GPIO_PuPd = GPIO_PuPd_DOWN;
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break;
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case PullUp:
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GPIO_PuPd = GPIO_PuPd_UP;
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break;
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default:
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GPIO_PuPd = GPIO_PuPd_NOPULL;
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break;
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}
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PAD_PullCtrl(obj->pin, GPIO_PuPd);
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}
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/**
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* @brief Set GPIO direction.
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* @param obj: gpio object define in application software.
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* @param direction: this parameter can be one of the following values:
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* @arg PIN_INPUT: this pin is input
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* @arg PIN_OUTPUT: this pin is output
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* @retval none
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*/
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void gpio_dir(gpio_t *obj, PinDirection direction)
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{
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assert_param(obj->pin != (PinName)NC);
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if (direction == PIN_OUTPUT) {
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GPIO_Direction(obj->pin, GPIO_Mode_OUT);
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} else {
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GPIO_Direction(obj->pin, GPIO_Mode_IN);
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}
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}
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/**
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* @brief Set GPIO direction.
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* @param obj: gpio object define in application software.
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* @param direction: this parameter can be one of the following values:
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* @arg PIN_INPUT: this pin is input
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* @arg PIN_OUTPUT: this pin is output
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* @retval none
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*/
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void gpio_change_dir(gpio_t *obj, PinDirection direction)
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{
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gpio_dir(obj, direction);
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}
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/**
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* @brief Sets value to the selected output port pin.
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* @param obj: gpio object define in application software.
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* @param value: specifies the value to be written to the selected pin
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* This parameter can be one of the following values:
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* @arg 0: Pin state set to low
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* @arg 1: Pin state set to high
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* @retval none
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*/
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void gpio_write(gpio_t *obj, int value)
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{
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assert_param(obj->pin != (PinName)NC);
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GPIO_WriteBit(obj->pin, value);
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}
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/**
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* @brief Sets value to the selected output port pin.
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* @param obj: gpio object define in application software.
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* @param value: specifies the value to be written to the selected pin
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* This parameter can be one of the following values:
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* @arg 0: Pin state set to low
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* @arg 1: Pin state set to high
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* @retval none
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*/
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void gpio_direct_write(gpio_t *obj, BOOL value)
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{
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gpio_write(obj, value);
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}
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/**
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* @brief Reads the specified gpio port pin.
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* @param obj: gpio object define in application software.
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* @retval state of the specified gpio port pin
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* - 1: pin state is high
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* - 0: pin state is low
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*/
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int gpio_read(gpio_t *obj)
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{
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assert_param(obj->pin != (PinName)NC);
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return GPIO_ReadDataBit(obj->pin);
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}
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/**
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* @brief Sets pull type to the selected pin.
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* @param obj: gpio object define in application software.
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* @param pull_type: this parameter can be one of the following values:
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* @arg PullNone: HighZ, user can input high or low use this pin
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* @arg OpenDrain(is OpenDrain output): no pull + OUT + GPIO[gpio_bit] = 0
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* @arg PullDown: pull down
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* @arg PullUp: pull up
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* @retval none
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*/
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void gpio_pull_ctrl(gpio_t *obj, PinMode pull_type)
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{
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u32 GPIO_PuPd;
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switch (pull_type) {
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case PullNone:/* No driver -> Input & High Impendance */
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GPIO_PuPd = GPIO_PuPd_NOPULL;
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break;
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case OpenDrain:/* No driver -> Output Low */
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GPIO_PuPd = GPIO_PuPd_NOPULL;
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break;
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case PullDown:
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GPIO_PuPd = GPIO_PuPd_DOWN;
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break;
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case PullUp:
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GPIO_PuPd = GPIO_PuPd_UP;
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break;
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default:
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GPIO_PuPd = GPIO_PuPd_NOPULL;
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break;
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}
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PAD_PullCtrl(obj->pin, GPIO_PuPd);
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}
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/**
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* @brief Deinitializes the GPIO device, include mode/direction/pull control registers.
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* @param obj: gpio object define in application software.
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* @retval none
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*/
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void gpio_deinit(gpio_t *obj)
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{
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GPIO_DeInit(obj->pin);
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}
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/******************* (C) COPYRIGHT 2016 Realtek Semiconductor *****END OF FILE****/
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