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/*
* Copyright (c) 2015, Freescale Semiconductor, Inc.
* Copyright (c) 2016, Toradex AG
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* o Neither the name of Freescale Semiconductor, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "gpio_vf6xx.h"
/*******************************************************************************
* Code
******************************************************************************/
/*******************************************************************************
* GPIO Initialization and Configuration functions
******************************************************************************/
/*FUNCTION**********************************************************************
*
* Function Name : GPIO_Init
* Description : Initializes the GPIO module according to the specified
* parameters in the initStruct.
*
*END**************************************************************************/
void GPIO_Init(GPIO_Type* base, gpio_init_t* initStruct)
{
uint32_t dir;
uint32_t iomux_addr;
/*
* Only on Vybrid the input/output buffer enable flags
* are part of the shared mux/conf register.
*/
iomux_addr = iomux_gpio_pad_addr[initStruct->pin];
dir = *((volatile uint32_t *)((uint32_t)iomux_addr));
dir &= ~(0x3);
if (initStruct->direction == gpioDigitalOutput) {
dir |= 0x2U;
} else if (initStruct->direction == gpioDigitalInput) {
dir |= 0x1U;
}
*((volatile uint32_t *)((uint32_t)iomux_addr)) = dir;
}
/*******************************************************************************
* GPIO Read and Write Functions
******************************************************************************/
/*FUNCTION**********************************************************************
*
* Function Name : GPIO_WritePinOutput
* Description : Sets the output level of the individual GPIO pin.
*
*END**************************************************************************/
void GPIO_WritePinOutput(GPIO_Type* base, uint32_t pin, gpio_pin_action_t pinVal)
{
if (pinVal == gpioPinSet)
GPIO_PSOR_REG(base) |= GPIO_OFFSET(pin); /* Set pin output to high level.*/
else
GPIO_PSOR_REG(base) &= ~(GPIO_OFFSET(pin)); /* Set pin output to low level.*/
}
void GPIO_TogglePinOutput(GPIO_Type* base, uint32_t pin, gpio_pin_action_t pinVal)
{
if (pinVal == gpioPinSet)
GPIO_PTOR_REG(base) |= GPIO_OFFSET(pin); /* Set pin output to high level.*/
else
GPIO_PTOR_REG(base) &= ~(GPIO_OFFSET(pin)); /* Set pin output to low level.*/
}
/*******************************************************************************
* EOF
******************************************************************************/
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