/******************** (C) COPYRIGHT 2003 STMicroelectronics ******************** | |
* File Name : gpio.c | |
* Author : MCD Application Team | |
* Date First Issued : 06/08/2003 | |
* Description : This file provides all the GPIO software functions | |
******************************************************************************** | |
* History: | |
* 30/11/2004 : V2.0 | |
* 14/07/2004 : V1.3 | |
* 01/01/2004 : V1.2 | |
******************************************************************************* | |
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. | |
*******************************************************************************/ | |
#include "gpio.h" | |
/******************************************************************************* | |
* Function Name : GPIO_Config | |
* Description : Configure the GPIO port pins | |
* Input 1 : GPIOx (x can be 0,1 or 2) the desired port | |
* Input 2 : Port_Pins : pins placements | |
* Input 3 : Pins Mode | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void GPIO_Config (GPIO_TypeDef *GPIOx, u16 Port_Pins, GpioPinMode_TypeDef GPIO_Mode) | |
{ | |
switch (GPIO_Mode) | |
{ | |
case GPIO_HI_AIN_TRI: | |
GPIOx->PC0&=~Port_Pins; | |
GPIOx->PC1&=~Port_Pins; | |
GPIOx->PC2&=~Port_Pins; | |
break; | |
case GPIO_IN_TRI_TTL: | |
GPIOx->PC0|=Port_Pins; | |
GPIOx->PC1&=~Port_Pins; | |
GPIOx->PC2&=~Port_Pins; | |
break; | |
case GPIO_IN_TRI_CMOS: | |
GPIOx->PC0&=~Port_Pins; | |
GPIOx->PC1|=Port_Pins; | |
GPIOx->PC2&=~Port_Pins; | |
break; | |
case GPIO_IPUPD_WP: | |
GPIOx->PC0|=Port_Pins; | |
GPIOx->PC1|=Port_Pins; | |
GPIOx->PC2&=~Port_Pins; | |
break; | |
case GPIO_OUT_OD: | |
GPIOx->PC0&=~Port_Pins; | |
GPIOx->PC1&=~Port_Pins; | |
GPIOx->PC2|=Port_Pins; | |
break; | |
case GPIO_OUT_PP: | |
GPIOx->PC0|=Port_Pins; | |
GPIOx->PC1&=~Port_Pins; | |
GPIOx->PC2|=Port_Pins; | |
break; | |
case GPIO_AF_OD: | |
GPIOx->PC0&=~Port_Pins; | |
GPIOx->PC1|=Port_Pins; | |
GPIOx->PC2|=Port_Pins; | |
break; | |
case GPIO_AF_PP: | |
GPIOx->PC0|=Port_Pins; | |
GPIOx->PC1|=Port_Pins; | |
GPIOx->PC2|=Port_Pins; | |
break; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : GPIO_BitWrite | |
* Description : Set or reset the selected port pin | |
* Input 1 : Selected GPIO port | |
* Input 2 : Pin number | |
* Input 3 : bit value | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void GPIO_BitWrite(GPIO_TypeDef *GPIOx, u8 Port_Pin, u8 Port_Val) | |
{ | |
if (Port_Val&0x01) GPIOx->PD |= 1<<Port_Pin; else GPIOx->PD &= ~(1<<Port_Pin); | |
} | |
/******************************************************************************* | |
* Function Name : GPIO_ByteWrite | |
* Description : Write byte value to the selected PD register | |
* Input 1 : Selected GPIO port | |
* Input 2 : GPIO_MSB or GPIO_LSB | |
* Input 3 : Byte value | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void GPIO_ByteWrite(GPIO_TypeDef *GPIOx, u8 Port_Byte, u8 Port_Val) | |
{ | |
GPIOx->PD = Port_Byte ? (GPIOx->PD&0x00FF) | ((u16)Port_Val<<8) | |
: (GPIOx->PD&0xFF00) | Port_Val; | |
} | |
/******************* (C) COPYRIGHT 2003 STMicroelectronics *****END OF FILE****/ |