📄 73x_gpio.c
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/******************** (C) COPYRIGHT 2005 STMicroelectronics ********************
* File Name : 73x_gpio.c
* Author : MCD Application Team
* Date First Issued : 09/27/2005 : V1.0
* Description : This file provides all the GPIO software functions.
**********************************************************************************
* History:
* 09/27/2005 : V1.0
**********************************************************************************
* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH
* CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT
* OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
* OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION
* CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*********************************************************************************/
/* Standard includes -------------------------------------------------------- */
#include "73x_gpio.h"
#include "73x_cfg.h"
/* Include of other module interface headers ---------------------------------*/
/* Local includes ------------------------------------------------------------*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Interface functions -------------------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/*****************************************************************************
* Function Name : GPIO_DeInit
* Description : Deinitializes the GPIOx peripheral registers to their default
* reset values.
* Input : - GPIOx: where x can be (0..6) to select the GPIO peripheral.
* Output : None
* Return : None
******************************************************************************/
void GPIO_DeInit (GPIO_TypeDef* GPIOx)
{
/* All GPIO Port pin is configured in Input Tristate TTL mode */
if( GPIOx == GPIO0)
{
CFG_PeripheralClockConfig(CFG_CLK_GPIO0,DISABLE);
CFG_PeripheralClockConfig(CFG_CLK_GPIO0,ENABLE);
}
else if ( GPIOx == GPIO1)
{
CFG_PeripheralClockConfig(CFG_CLK_GPIO1,DISABLE);
CFG_PeripheralClockConfig(CFG_CLK_GPIO1,ENABLE);
}
else if ( GPIOx == GPIO2)
{
CFG_PeripheralClockConfig(CFG_CLK_GPIO2,DISABLE);
CFG_PeripheralClockConfig(CFG_CLK_GPIO2,ENABLE);
}
else if ( GPIOx == GPIO3)
{
CFG_PeripheralClockConfig(CFG_CLK_GPIO3,DISABLE);
CFG_PeripheralClockConfig(CFG_CLK_GPIO3,ENABLE);
}
else if ( GPIOx == GPIO4)
{
CFG_PeripheralClockConfig(CFG_CLK_GPIO4,DISABLE);
CFG_PeripheralClockConfig(CFG_CLK_GPIO4,ENABLE);
}
else if ( GPIOx == GPIO5)
{
CFG_PeripheralClockConfig(CFG_CLK_GPIO5,DISABLE);
CFG_PeripheralClockConfig(CFG_CLK_GPIO5,ENABLE);
}
else if ( GPIOx == GPIO6)
{
CFG_PeripheralClockConfig(CFG_CLK_GPIO6,DISABLE);
CFG_PeripheralClockConfig(CFG_CLK_GPIO6,ENABLE);
}
}
/******************************************************************************
* Function Name : GPIO_Init
* Description : Initializes the GPIOx peripheral according to the specified
* parameters in the GPIO_InitTypeDef structure.
* Input : - GPIOx: where x can be (0..6) to select the GPIO peripheral.
* - GPIO_InitStruct: pointer to a GPIO_InitTypeDef structure that
* contains the configuration information for the specified GPIO
* peripheral.
* Output : None
* Return : None
******************************************************************************/
void GPIO_Init (GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct)
{
/* GPIOx Mode and Pins Set */
switch (GPIO_InitStruct->GPIO_Mode)
{
case GPIO_Mode_HI_AIN_TRI:
GPIOx->PC0&=~GPIO_InitStruct->GPIO_Pins;
GPIOx->PC1&=~GPIO_InitStruct->GPIO_Pins;
GPIOx->PC2&=~GPIO_InitStruct->GPIO_Pins;
break;
case GPIO_Mode_IN_TRI_TTL:
GPIOx->PC0|=GPIO_InitStruct->GPIO_Pins;
GPIOx->PC1&=~GPIO_InitStruct->GPIO_Pins;
GPIOx->PC2&=~GPIO_InitStruct->GPIO_Pins;
break;
case GPIO_Mode_INOUT_WP:
GPIOx->PC0|=GPIO_InitStruct->GPIO_Pins;
GPIOx->PC1|=GPIO_InitStruct->GPIO_Pins;
GPIOx->PC2&=~GPIO_InitStruct->GPIO_Pins;
break;
case GPIO_Mode_OUT_OD:
GPIOx->PC0&=~GPIO_InitStruct->GPIO_Pins;
GPIOx->PC1&=~GPIO_InitStruct->GPIO_Pins;
GPIOx->PC2|=GPIO_InitStruct->GPIO_Pins;
break;
case GPIO_Mode_OUT_PP:
GPIOx->PC0|=GPIO_InitStruct->GPIO_Pins;
GPIOx->PC1&=~GPIO_InitStruct->GPIO_Pins;
GPIOx->PC2|=GPIO_InitStruct->GPIO_Pins;
break;
case GPIO_Mode_AF_OD:
GPIOx->PC0&=~GPIO_InitStruct->GPIO_Pins;
GPIOx->PC1|=GPIO_InitStruct->GPIO_Pins;
GPIOx->PC2|=GPIO_InitStruct->GPIO_Pins;
break;
case GPIO_Mode_AF_PP:
GPIOx->PC0|=GPIO_InitStruct->GPIO_Pins;
GPIOx->PC1|=GPIO_InitStruct->GPIO_Pins;
GPIOx->PC2|=GPIO_InitStruct->GPIO_Pins;
break;
}
}
/******************************************************************************
* Function Name : GPIO_StructInit
* Description : Initialize the GPIO Init Structure parameters
* Input : - GPIO_InitStruct : pointer to a GPIO_InitTypeDef structure
* which will be initialized.
* Return : None.
******************************************************************************/
void GPIO_StructInit(GPIO_InitTypeDef* GPIO_InitStruct)
{
/* Reset GPIO init structure parameters values */
GPIO_InitStruct->GPIO_Pins = GPIO_PIN_ALL;
GPIO_InitStruct->GPIO_Mode = GPIO_Mode_IN_TRI_TTL;
}
/*****************************************************************************
* Function Name : GPIO_BitWrite
* Description : Set or reset the selected GPIO port pin
* Input : - GPIOx: where x can be (0..6) to select the GPIO peripheral.
* - GPIO_Pin: the Pin number. This parameter can be GPIO_PIN_x
* where x can be (0..15)
* - Bit_Val: A BitAction enumuration value:
* - Bit_SET: set the selected port pin
* - Bit_RESET: reset the selected port pin
* Output : None
* Return : None
******************************************************************************/
void GPIO_BitWrite(GPIO_TypeDef* GPIOx, u16 GPIO_Pin, BitAction Bit_Val)
{
if ((Bit_Val & Bit_SET) != 0 )
{
GPIOx->PD |= GPIO_Pin;
}
else
{
GPIOx->PD &= ~GPIO_Pin;
}
}
/*******************************************************************************
* Function Name : GPIO_BitRead
* Description : Read the desired port pin value
* Input : - GPIOx: where x can be (0..6) to select the GPIO peripheral.
* : - GPIO_Pin: the Pin number. This parameter can be GPIO_PIN_x
* where x can be (0..15)
* Output : None
* Return : The selected pin value of the selected GPIO port
*******************************************************************************/
u8 GPIO_BitRead(GPIO_TypeDef* GPIOx, u16 GPIO_Pin)
{
if ((GPIOx->PD & GPIO_Pin) != 0 )
{
return 1;
}
else
{
return 0;
}
}
/******************************************************************************
* Function Name : GPIO_ByteWrite
* Description : Write byte value to the selected GPIO port
* Input : - GPIOx: where x can be (0..6) to select the GPIO peripheral.
* - GPIO_Byte: High or low byte
* This parameter can be: GPIO_MSB or GPIO_LSB
* - Byte_Val: Byte value
* Output : None
* Return : None
******************************************************************************/
void GPIO_ByteWrite(GPIO_TypeDef* GPIOx, u8 GPIO_Byte, u8 Byte_Val)
{
if (GPIO_Byte == GPIO_MSB)
{
GPIOx->PD = (GPIOx->PD&0x00FF) | ((u16)Byte_Val<<8);
}
else
{
GPIOx->PD = (GPIOx->PD&0xFF00) | Byte_Val;
}
}
/*******************************************************************************
* Function Name : GPIO_ByteRead
* Description : Read the desired port Byte value
* Input : - GPIOx: where x can be (0..6) to select the GPIO peripheral.
* : - GPIO_Byte: High or low byte
* This parameter can be: GPIO_MSB or GPIO_LSB
* Output : None
* Return : The GPIO MSB or LSB Byte value of the selected GPIO port
*******************************************************************************/
u8 GPIO_ByteRead(GPIO_TypeDef* GPIOx, u8 GPIO_Byte)
{
return (u8)(GPIOx->PD >> GPIO_Byte);
}
/*******************************************************************************
* Function Name : GPIO_WordWrite
* Description : Write word value to the selected GPIO port
* Input : - GPIOx: where x can be (0..6) to select the GPIO peripheral.
* : - Port_Val: Word value to output
* Output : None
* Return : None
*******************************************************************************/
void GPIO_WordWrite(GPIO_TypeDef* GPIOx, u16 Port_Val)
{
GPIOx->PD = Port_Val;
}
/*******************************************************************************
* Function Name : GPIO_WordRead
* Description : Read the desired port word value
* Input : - GPIOx: where x can be (0..6) to select the GPIO peripheral.
* Output : None
* Return : The GPIO Word value of the selected GPIO port
*******************************************************************************/
u16 GPIO_WordRead(GPIO_TypeDef* GPIOx)
{
return GPIOx->PD;
}
/******************* (C) COPYRIGHT 2005 STMicroelectronics *****END OF FILE****/
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