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Update to V4.0.4. Add in STR912 port and demo.

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This commit is contained in:
Richard Barry 2006-06-22 17:18:31 +00:00
parent 05023971cb
commit 3dcbed5763
445 changed files with 30007 additions and 331 deletions
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277
Demo/ARM9_STR91X_IAR/Library/source/91x_wdg.c Normal file
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/******************** (C) COPYRIGHT 2006 STMicroelectronics ********************
* File Name : 91x_wdg.c
* Author : MCD Application Team
* Date First Issued : 05/18/2006 : Version 1.0
* Description : This file provides all the WDG software functions.
********************************************************************************
* History:
* 05/24/2006 : Version 1.1
* 05/18/2006 : Version 1.0
********************************************************************************
* 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.
*******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "91x_wdg.h"
#include "91x_scu.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* WDG End of Count interrupt Flag */
#define WDG_FLAG_EC 0x0001
/* WDG End of Count interrupt request */
#define WDG_IT_EC 0x0001
/* WDG Start/Stop counter */
#define WDG_Counter_Start 0x0002
#define WDG_Counter_Stop 0xFFFD
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Registers reset value */
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/******************************************************************************
* Function Name : WDG_DeInit
* Description : Deinitializes the WDG peripheral registers to their default
* reset values.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void WDG_DeInit(void)
{
SCU_APBPeriphReset(__WDG, ENABLE); /*WDG peripheral under Reset */
SCU_APBPeriphReset(__WDG, DISABLE); /*WDG peripheral Reset off*/
}
/*******************************************************************************
* Function Name : WDG_StructInit
* Description : Fills the WDG_InitTypeDef structure member with its reset
* value.
* Input : WDG_InitStruct : pointer to a WDG_InitTypeDef structure
* which will be initialized.
* Output : None
* Return : None
*******************************************************************************/
void WDG_StructInit(WDG_InitTypeDef *WDG_InitStruct)
{
/* Select the Watchdog running mode*/
WDG_InitStruct->WDG_Mode = WDG_Mode_Timer;
/* Select the source clock */
WDG_InitStruct-> WDG_ClockSource = WDG_ClockSource_Apb;
/* Initialize Prescaler */
WDG_InitStruct->WDG_Prescaler =0xFF;
/* Initialize Preload */
WDG_InitStruct->WDG_Preload =0xFFFF;
}
/*******************************************************************************
* Function Name : WDG_Init
* Description : Initializes WDG peripheral according to the specified
* parameters in the WDG_InitStruct.
* Input : WDG_InitStruct: pointer to a WDG_InitTypeDef structure that
* contains the configuration information for the WDG peripheral.
* Output : None
* Return : None
*******************************************************************************/
void WDG_Init(WDG_InitTypeDef* WDG_InitStruct)
{
if(WDG_InitStruct->WDG_ClockSource == WDG_ClockSource_Apb)
{
/* Select The APB clock as clock source */
WDG->CR &= WDG_ClockSource_Apb;
}
else
{
/* Select the RTC clock as source */
WDG->CR |= WDG_ClockSource_Rtc ;
}
/* Configure WDG Prescaler register value */
WDG->PR = WDG_InitStruct->WDG_Prescaler;
/* Configure WDG Pre-load register value */
WDG->VR = WDG_InitStruct->WDG_Preload ;
if(WDG_InitStruct->WDG_Mode == WDG_Mode_Timer)
{
/* Select Timer mode */
WDG->CR &= WDG_Mode_Timer;
}
else
{
/* Select WDG mode */
WDG->CR |= WDG_Mode_Wdg ;
}
}
/*******************************************************************************
* Function Name : WDG_Cmd
* Description : Enables or disables the WDG peripheral.
* Input : NewState: new state of the WDG peripheral (Newstate can be
* ENABLE or DISABLE)
* Output : None
* Return : None
*******************************************************************************/
void WDG_Cmd(FunctionalState NewState )
{
if((WDG->CR & WDG_Mode_Wdg) == 0)
{
/* Timer mode */
if(NewState == ENABLE)
{
/* Start timer by setting SC bit in Control register */
WDG->CR |= WDG_Counter_Start;
}
else
{
/* Stop timer by clearning SC bit in Control register */
WDG->CR &= WDG_Counter_Stop;
}
}
else
{
/* Watchdog mode */
if(NewState == ENABLE)
{
WDG->KR = WDG_KeyValue1;
WDG->KR = WDG_KeyValue2;
}
}
}
/*******************************************************************************
* Function Name : WDG_ITConfig
* Description : Enables or disables the WDG End of Count(EC) interrupt.
* Input : Newstate: new state of the End of Count(EC) WDG interrupt.
* This parameter can be: ENABLE or DISABLE.
* Output : None
* Return : None
*******************************************************************************/
void WDG_ITConfig(FunctionalState NewState)
{
if(NewState == ENABLE)
{
/* Enable the End of Count interrupt */
WDG->MR |= WDG_IT_EC;
}
else
{
/* Disable the End of Count interrupt */
WDG->MR &= ~WDG_IT_EC;
}
}
/*******************************************************************************
* Function Name : WDG_GetCounter
* Description : Gets the WDG’s current counter value.
* Input : None
* Output : None
* Return : The WDG current counter value
*******************************************************************************/
u16 WDG_GetCounter(void)
{
return WDG->CNT;
}
/*******************************************************************************
* Function Name : WDG_GetITStatus
* Description : Checks whether the WDG End of Count(EC) interrupt is occured or not.
* Input : None
* Output : None
* Return : The new state of WDG_IT (SET or RESET).
*******************************************************************************/
ITStatus WDG_GetITStatus(void)
{
if(((WDG->SR & WDG_IT_EC) != RESET )&&((WDG->MR & WDG_IT_EC) != RESET ))
{
return SET;
}
else
{
return RESET;
}
}
/*******************************************************************************
* Function Name : WDG_ClearITPendingBit
* Description : Clears the WDG's End of Count(EC) interrupt pending bit.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void WDG_ClearITPendingBit(void)
{
/* Clear the EC pending bit */
WDG->SR &= ~WDG_IT_EC;
}
/*******************************************************************************
* Function Name : WDG_ClearFlag
* Description : Clears the WDG's End of Count(EC) Flag.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void WDG_ClearFlag(void)
{
/* Clear the EC Flag */
WDG->SR &= ~WDG_FLAG_EC;
}
/*******************************************************************************
* Function Name : WDG_GetFlagStatus
* Description : Checks whether the WDG End of Count(EC) flag is set or not.
* Input : None
* Output : None
* Return : The new state of the WDG_FLAG (SET or RESET).
*******************************************************************************/
FlagStatus WDG_GetFlagStatus(void)
{
if((WDG->SR & WDG_FLAG_EC) != RESET )
{
return SET;
}
else
{
return RESET;
}
}
/******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****/