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| 1 | ingob | 1 | /******************** (C) COPYRIGHT 2006 STMicroelectronics ******************** |
| 2 | * File Name : 91x_wiu.c |
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| 3 | * Author : MCD Application Team |
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| 4 | * Date First Issued : 05/18/2006 : Version 1.0 |
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| 5 | * Description : This file provides all the WIU software functions. |
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| 6 | ********************************************************************************** |
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| 7 | * History: |
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| 8 | * 05/22/2007 : Version 1.2 |
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| 9 | * 05/24/2006 : Version 1.1 |
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| 10 | * 05/18/2006 : Version 1.0 |
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| 11 | ********************************************************************************** |
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| 12 | * THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH |
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| 13 | * CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. |
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| 14 | * AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT |
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| 15 | * OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT |
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| 16 | * OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION |
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| 17 | * CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. |
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| 18 | *********************************************************************************/ |
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| 19 | |||
| 20 | /* Standard include ----------------------------------------------------------*/ |
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| 21 | #include "91x_wiu.h" |
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| 22 | #include "91x_scu.h" |
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| 23 | |||
| 24 | /* Include of other module interface headers ---------------------------------*/ |
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| 25 | /* Local includes ------------------------------------------------------------*/ |
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| 26 | /* Private typedef -----------------------------------------------------------*/ |
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| 27 | /* Private define ------------------------------------------------------------*/ |
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| 28 | |||
| 29 | |||
| 30 | /* WIU Masks "used" only in this module */ |
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| 31 | #define WIU_Enable 0x02 |
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| 32 | |||
| 33 | |||
| 34 | /* Private macro -------------------------------------------------------------*/ |
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| 35 | /* Private variables ---------------------------------------------------------*/ |
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| 36 | /* Private function prototypes -----------------------------------------------*/ |
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| 37 | /* Interface functions -------------------------------------------------------*/ |
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| 38 | /* Private functions ---------------------------------------------------------*/ |
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| 39 | /****************************************************************************** |
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| 40 | * Function Name : WIU_Init |
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| 41 | * Description : Initializes the WIU unit according to the specified parameters |
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| 42 | * in the WIU_InitTypeDef structure. |
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| 43 | * Input : WIU_InitStruct: pointer to a WIU_InitTypeDef structure that |
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| 44 | * contains the configuration information for the WIU peripheral. |
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| 45 | * Output : None |
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| 46 | * Return : None |
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| 47 | ******************************************************************************/ |
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| 48 | void WIU_Init(WIU_InitTypeDef* WIU_InitStruct) |
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| 49 | { |
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| 50 | /* select the Wake-up line to be used */ |
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| 51 | WIU->MR |= WIU_InitStruct->WIU_Line; |
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| 52 | |||
| 53 | /* configure the triggering edge */ |
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| 54 | if(WIU_InitStruct->WIU_TriggerEdge == WIU_RisingEdge) |
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| 55 | { |
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| 56 | /* trigger on rising edge */ |
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| 57 | WIU->TR |= WIU_InitStruct->WIU_Line; |
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| 58 | } |
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| 59 | else |
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| 60 | { |
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| 61 | /* trigger on falling edge */ |
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| 62 | WIU->TR &= ~WIU_InitStruct->WIU_Line; |
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| 63 | } |
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| 64 | |||
| 65 | } |
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| 66 | |||
| 67 | /****************************************************************************** |
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| 68 | * Function Name : WIU_DeInit |
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| 69 | * Description : Deinitializes the WIU registers to their default reset values. |
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| 70 | * Input : None |
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| 71 | * Output : None |
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| 72 | * Return : None |
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| 73 | ******************************************************************************/ |
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| 74 | void WIU_DeInit(void) |
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| 75 | { |
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| 76 | /* initialize the WIU registers to their reset value */ |
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| 77 | SCU_APBPeriphReset(__WIU, ENABLE); |
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| 78 | SCU_APBPeriphReset(__WIU, DISABLE); |
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| 79 | } |
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| 80 | |||
| 81 | /****************************************************************************** |
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| 82 | * Function Name : WIU_StructInit |
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| 83 | * Description : Fills in a WIU_InitTypeDef structure with the reset value of |
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| 84 | * each parameter. |
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| 85 | * Input : WIU_InitStruct : pointer to a WIU_InitTypeDef structure |
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| 86 | * which will be initialized. |
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| 87 | * Output : None |
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| 88 | * Return : None |
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| 89 | ******************************************************************************/ |
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| 90 | void WIU_StructInit(WIU_InitTypeDef* WIU_InitStruct) |
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| 91 | { |
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| 92 | /* initialize the WIU_InitStruct fields to their reset values */ |
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| 93 | WIU_InitStruct->WIU_Line = 0x0 ; |
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| 94 | WIU_InitStruct->WIU_TriggerEdge = WIU_FallingEdge ; |
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| 95 | } |
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| 96 | |||
| 97 | /******************************************************************************* |
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| 98 | * Function Name : WIU_Cmd |
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| 99 | * Description : Enables or disables the WIU peripheral. |
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| 100 | * Input : NewState: new state of the WIU peripheral (Newstate can be |
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| 101 | * ENABLE or DISABLE) |
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| 102 | * Output : None |
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| 103 | * Return : None |
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| 104 | *******************************************************************************/ |
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| 105 | void WIU_Cmd(FunctionalState NewState ) |
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| 106 | { |
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| 107 | if(NewState == ENABLE) |
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| 108 | { |
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| 109 | /* Enable the Wake-up Unit (for interrupts and wake-up from low power modes) */ |
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| 110 | WIU->CTRL |= WIU_Enable ; |
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| 111 | } |
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| 112 | else |
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| 113 | { |
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| 114 | /* Disable the Wake-up Unit (for interrupts and wake-up from low power modes) */ |
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| 115 | |||
| 116 | WIU->CTRL &= WIU_Enable ; |
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| 117 | } |
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| 118 | } |
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| 119 | |||
| 120 | /******************************************************************************* |
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| 121 | * Function Name : WIU_GenerateSWInterrupt |
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| 122 | * Description : Generates a Software interrupt. |
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| 123 | * Input : - WIU_Line: specifies the WIU lines to be enabled or |
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| 124 | * disabled. This parameter can be: |
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| 125 | * - WIU_Linex: External interrupt line x where x(0..31) |
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| 126 | * Output : None |
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| 127 | * Return : None |
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| 128 | *******************************************************************************/ |
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| 129 | void WIU_GenerateSWInterrupt(u32 WIU_Line) |
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| 130 | { |
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| 131 | WIU->INTR |= WIU_Line; |
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| 132 | } |
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| 133 | |||
| 134 | /******************************************************************************* |
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| 135 | * Function Name : WIU_GetFlagStatus |
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| 136 | * Description : Checks whether the specified WIU line flag is set or not. |
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| 137 | * Input : - WIU_Line: specifies the WIU lines flag to check. |
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| 138 | * This parameter can be: |
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| 139 | * - WIU_Linex: External interrupt line x where x(0..31) |
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| 140 | * Output : None |
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| 141 | * Return : The new state of WIU_Line (SET or RESET). |
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| 142 | *******************************************************************************/ |
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| 143 | FlagStatus WIU_GetFlagStatus(u32 WIU_Line) |
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| 144 | { |
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| 145 | if((WIU->PR & WIU_Line) != RESET) |
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| 146 | { |
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| 147 | return SET; |
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| 148 | } |
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| 149 | else |
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| 150 | { |
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| 151 | return RESET; |
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| 152 | } |
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| 153 | } |
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| 154 | |||
| 155 | /******************************************************************************* |
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| 156 | * Function Name : WIU_ClearFlag |
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| 157 | * Description : Clears the WIU’s line pending flags. |
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| 158 | * Input : - WIU_Line: specifies the WIU lines flags to clear. |
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| 159 | * This parameter can be: |
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| 160 | * - WIU_Linex: External interrupt line x where x(0..31) |
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| 161 | * Output : None |
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| 162 | * Return : None |
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| 163 | *******************************************************************************/ |
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| 164 | void WIU_ClearFlag(u32 WIU_Line) |
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| 165 | { |
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| 166 | WIU->PR = WIU_Line; |
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| 167 | } |
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| 168 | |||
| 169 | /******************************************************************************* |
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| 170 | * Function Name : WIU_GetITStatus |
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| 171 | * Description : Checks whether the specified WIU line is asserted or not. |
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| 172 | * Input : - WIU_Line: specifies the WIU lines to check. |
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| 173 | * This parameter can be: |
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| 174 | * - WIU_Linex: External interrupt line x where x(0..31) |
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| 175 | * Output : None |
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| 176 | * Return : The new state of WIU_Line (SET or RESET). |
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| 177 | *******************************************************************************/ |
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| 178 | ITStatus WIU_GetITStatus(u32 WIU_Line) |
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| 179 | { |
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| 180 | if(((WIU->PR & WIU_Line) != RESET)&& ((WIU->MR & WIU_Line) != RESET)) |
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| 181 | { |
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| 182 | return SET; |
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| 183 | } |
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| 184 | else |
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| 185 | { |
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| 186 | return RESET; |
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| 187 | } |
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| 188 | } |
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| 189 | |||
| 190 | /******************************************************************************* |
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| 191 | * Function Name : WIU_ClearITPendingBit |
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| 192 | * Description : Clears the WIU’s line pending bits. |
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| 193 | * Input : - WIU_Line: specifies the WIU lines to clear. |
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| 194 | * This parameter can be: |
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| 195 | * - WIU_Linex: External interrupt line x where x(0..31) |
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| 196 | * Output : None |
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| 197 | * Return : None |
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| 198 | *******************************************************************************/ |
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| 199 | void WIU_ClearITPendingBit(u32 WIU_Line) |
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| 200 | { |
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| 201 | WIU->PR = WIU_Line; |
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| 202 | } |
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| 203 | |||
| 204 | |||
| 205 | /******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****/ |