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authorBert Lange <b.lange@hzdr.de>2015-04-15 13:54:39 +0200
committerBert Lange <b.lange@hzdr.de>2015-04-15 13:54:39 +0200
commit8c5a743259480ebd0cfdbb17fbde8584e34b2aa4 (patch)
tree794887f475d6abb4bdde21c94105f7fcdde1bdd4 /uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_wdg.c
parenta1c964908b51599bf624bd2d253419c7e629f195 (diff)
downloadzpu-8c5a743259480ebd0cfdbb17fbde8584e34b2aa4.zip
zpu-8c5a743259480ebd0cfdbb17fbde8584e34b2aa4.tar.gz
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diff --git a/uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_wdg.c b/uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_wdg.c
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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 WDGs 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****/
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