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| /******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** |
| * File Name : 91x_wiu.c |
| * Author : MCD Application Team |
| * Version : V2.1 |
| * Date : 12/22/2008 |
| * Description : This file provides all the WIU firmware functions. |
| ********************************************************************************** |
| * 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 include ----------------------------------------------------------*/ |
| #include "91x_wiu.h" |
| #include "91x_scu.h" |
| |
| /* Include of other module interface headers ---------------------------------*/ |
| /* Local includes ------------------------------------------------------------*/ |
| /* Private typedef -----------------------------------------------------------*/ |
| /* Private define ------------------------------------------------------------*/ |
| |
| |
| /* WIU Masks "used" only in this module */ |
| #define WIU_Enable 0x02 |
| |
| |
| /* Private macro -------------------------------------------------------------*/ |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private function prototypes -----------------------------------------------*/ |
| /* Interface functions -------------------------------------------------------*/ |
| /* Private functions ---------------------------------------------------------*/ |
| /****************************************************************************** |
| * Function Name : WIU_Init |
| * Description : Initializes the WIU unit according to the specified parameters |
| * in the WIU_InitTypeDef structure. |
| * Input : WIU_InitStruct: pointer to a WIU_InitTypeDef structure that |
| * contains the configuration information for the WIU peripheral. |
| * Output : None |
| * Return : None |
| ******************************************************************************/ |
| void WIU_Init(WIU_InitTypeDef* WIU_InitStruct) |
| { |
| /* select the Wake-up line to be used */ |
| WIU->MR |= WIU_InitStruct->WIU_Line; |
| |
| /* configure the triggering edge */ |
| if(WIU_InitStruct->WIU_TriggerEdge == WIU_RisingEdge) |
| { |
| /* trigger on rising edge */ |
| WIU->TR |= WIU_InitStruct->WIU_Line; |
| } |
| else |
| { |
| /* trigger on falling edge */ |
| WIU->TR &= ~WIU_InitStruct->WIU_Line; |
| } |
| |
| } |
| |
| /****************************************************************************** |
| * Function Name : WIU_DeInit |
| * Description : Deinitializes the WIU registers to their default reset values. |
| * Input : None |
| * Output : None |
| * Return : None |
| ******************************************************************************/ |
| void WIU_DeInit(void) |
| { |
| /* initialize the WIU registers to their reset value */ |
| SCU_APBPeriphReset(__WIU, ENABLE); |
| SCU_APBPeriphReset(__WIU, DISABLE); |
| } |
| |
| /****************************************************************************** |
| * Function Name : WIU_StructInit |
| * Description : Fills in a WIU_InitTypeDef structure with the reset value of |
| * each parameter. |
| * Input : WIU_InitStruct : pointer to a WIU_InitTypeDef structure |
| * which will be initialized. |
| * Output : None |
| * Return : None |
| ******************************************************************************/ |
| void WIU_StructInit(WIU_InitTypeDef* WIU_InitStruct) |
| { |
| /* initialize the WIU_InitStruct fields to their reset values */ |
| WIU_InitStruct->WIU_Line = 0x0 ; |
| WIU_InitStruct->WIU_TriggerEdge = WIU_FallingEdge ; |
| } |
| |
| /******************************************************************************* |
| * Function Name : WIU_Cmd |
| * Description : Enables or disables the WIU peripheral. |
| * Input : NewState: new state of the WIU peripheral (Newstate can be |
| * ENABLE or DISABLE) |
| * Output : None |
| * Return : None |
| *******************************************************************************/ |
| void WIU_Cmd(FunctionalState NewState ) |
| { |
| if(NewState == ENABLE) |
| { |
| /* Enable the Wake-up Unit (for interrupts and wake-up from low power modes) */ |
| WIU->CTRL |= WIU_Enable ; |
| } |
| else |
| { |
| /* Disable the Wake-up Unit (for interrupts and wake-up from low power modes) */ |
| |
| WIU->CTRL &= ~WIU_Enable ; |
| } |
| } |
| |
| /******************************************************************************* |
| * Function Name : WIU_GenerateSWInterrupt |
| * Description : Generates a Software interrupt. |
| * Input : - WIU_Line: specifies the WIU lines to be enabled or |
| * disabled. This parameter can be: |
| * - WIU_Linex: External interrupt line x where x(0..31) |
| * Output : None |
| * Return : None |
| *******************************************************************************/ |
| void WIU_GenerateSWInterrupt(u32 WIU_Line) |
| { |
| WIU->INTR |= WIU_Line; |
| } |
| |
| /******************************************************************************* |
| * Function Name : WIU_GetFlagStatus |
| * Description : Checks whether the specified WIU line flag is set or not. |
| * Input : - WIU_Line: specifies the WIU lines flag to check. |
| * This parameter can be: |
| * - WIU_Linex: External interrupt line x where x(0..31) |
| * Output : None |
| * Return : The new state of WIU_Line (SET or RESET). |
| *******************************************************************************/ |
| FlagStatus WIU_GetFlagStatus(u32 WIU_Line) |
| { |
| if((WIU->PR & WIU_Line) != RESET) |
| { |
| return SET; |
| } |
| else |
| { |
| return RESET; |
| } |
| } |
| |
| /******************************************************************************* |
| * Function Name : WIU_ClearFlag |
| * Description : Clears the WIUs line pending flags. |
| * Input : - WIU_Line: specifies the WIU lines flags to clear. |
| * This parameter can be: |
| * - WIU_Linex: External interrupt line x where x(0..31) |
| * Output : None |
| * Return : None |
| *******************************************************************************/ |
| void WIU_ClearFlag(u32 WIU_Line) |
| { |
| WIU->PR = WIU_Line; |
| } |
| |
| /******************************************************************************* |
| * Function Name : WIU_GetITStatus |
| * Description : Checks whether the specified WIU line is asserted or not. |
| * Input : - WIU_Line: specifies the WIU lines to check. |
| * This parameter can be: |
| * - WIU_Linex: External interrupt line x where x(0..31) |
| * Output : None |
| * Return : The new state of WIU_Line (SET or RESET). |
| *******************************************************************************/ |
| ITStatus WIU_GetITStatus(u32 WIU_Line) |
| { |
| if(((WIU->PR & WIU_Line) != RESET)&& ((WIU->MR & WIU_Line) != RESET)) |
| { |
| return SET; |
| } |
| else |
| { |
| return RESET; |
| } |
| } |
| |
| /******************************************************************************* |
| * Function Name : WIU_ClearITPendingBit |
| * Description : Clears the WIUs line pending bits. |
| * Input : - WIU_Line: specifies the WIU lines to clear. |
| * This parameter can be: |
| * - WIU_Linex: External interrupt line x where x(0..31) |
| * Output : None |
| * Return : None |
| *******************************************************************************/ |
| void WIU_ClearITPendingBit(u32 WIU_Line) |
| { |
| WIU->PR = WIU_Line; |
| } |
| |
| |
| /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/ |