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196 | killagreg | 1 | /******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** |
1 | ingob | 2 | * File Name : 91x_wiu.c |
3 | * Author : MCD Application Team |
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196 | killagreg | 4 | * Version : V2.1 |
5 | * Date : 12/22/2008 |
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6 | * Description : This file provides all the WIU firmware functions. |
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1 | ingob | 7 | ********************************************************************************** |
8 | * THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH |
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9 | * CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. |
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10 | * AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT |
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11 | * OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT |
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12 | * OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION |
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13 | * CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. |
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14 | *********************************************************************************/ |
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15 | |||
16 | /* Standard include ----------------------------------------------------------*/ |
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17 | #include "91x_wiu.h" |
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18 | #include "91x_scu.h" |
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19 | |||
20 | /* Include of other module interface headers ---------------------------------*/ |
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21 | /* Local includes ------------------------------------------------------------*/ |
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22 | /* Private typedef -----------------------------------------------------------*/ |
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23 | /* Private define ------------------------------------------------------------*/ |
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24 | |||
25 | |||
26 | /* WIU Masks "used" only in this module */ |
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27 | #define WIU_Enable 0x02 |
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28 | |||
29 | |||
30 | /* Private macro -------------------------------------------------------------*/ |
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31 | /* Private variables ---------------------------------------------------------*/ |
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32 | /* Private function prototypes -----------------------------------------------*/ |
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33 | /* Interface functions -------------------------------------------------------*/ |
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34 | /* Private functions ---------------------------------------------------------*/ |
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35 | /****************************************************************************** |
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36 | * Function Name : WIU_Init |
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37 | * Description : Initializes the WIU unit according to the specified parameters |
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38 | * in the WIU_InitTypeDef structure. |
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39 | * Input : WIU_InitStruct: pointer to a WIU_InitTypeDef structure that |
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40 | * contains the configuration information for the WIU peripheral. |
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41 | * Output : None |
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42 | * Return : None |
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43 | ******************************************************************************/ |
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44 | void WIU_Init(WIU_InitTypeDef* WIU_InitStruct) |
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45 | { |
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46 | /* select the Wake-up line to be used */ |
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47 | WIU->MR |= WIU_InitStruct->WIU_Line; |
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48 | |||
49 | /* configure the triggering edge */ |
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50 | if(WIU_InitStruct->WIU_TriggerEdge == WIU_RisingEdge) |
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51 | { |
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52 | /* trigger on rising edge */ |
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53 | WIU->TR |= WIU_InitStruct->WIU_Line; |
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54 | } |
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55 | else |
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56 | { |
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57 | /* trigger on falling edge */ |
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58 | WIU->TR &= ~WIU_InitStruct->WIU_Line; |
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59 | } |
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60 | |||
61 | } |
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62 | |||
63 | /****************************************************************************** |
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64 | * Function Name : WIU_DeInit |
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65 | * Description : Deinitializes the WIU registers to their default reset values. |
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66 | * Input : None |
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67 | * Output : None |
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68 | * Return : None |
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69 | ******************************************************************************/ |
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70 | void WIU_DeInit(void) |
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71 | { |
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72 | /* initialize the WIU registers to their reset value */ |
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73 | SCU_APBPeriphReset(__WIU, ENABLE); |
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74 | SCU_APBPeriphReset(__WIU, DISABLE); |
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75 | } |
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76 | |||
77 | /****************************************************************************** |
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78 | * Function Name : WIU_StructInit |
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79 | * Description : Fills in a WIU_InitTypeDef structure with the reset value of |
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80 | * each parameter. |
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81 | * Input : WIU_InitStruct : pointer to a WIU_InitTypeDef structure |
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82 | * which will be initialized. |
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83 | * Output : None |
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84 | * Return : None |
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85 | ******************************************************************************/ |
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86 | void WIU_StructInit(WIU_InitTypeDef* WIU_InitStruct) |
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87 | { |
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88 | /* initialize the WIU_InitStruct fields to their reset values */ |
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89 | WIU_InitStruct->WIU_Line = 0x0 ; |
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90 | WIU_InitStruct->WIU_TriggerEdge = WIU_FallingEdge ; |
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91 | } |
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92 | |||
93 | /******************************************************************************* |
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94 | * Function Name : WIU_Cmd |
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95 | * Description : Enables or disables the WIU peripheral. |
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96 | * Input : NewState: new state of the WIU peripheral (Newstate can be |
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97 | * ENABLE or DISABLE) |
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98 | * Output : None |
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99 | * Return : None |
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100 | *******************************************************************************/ |
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101 | void WIU_Cmd(FunctionalState NewState ) |
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102 | { |
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103 | if(NewState == ENABLE) |
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104 | { |
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105 | /* Enable the Wake-up Unit (for interrupts and wake-up from low power modes) */ |
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106 | WIU->CTRL |= WIU_Enable ; |
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107 | } |
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108 | else |
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109 | { |
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110 | /* Disable the Wake-up Unit (for interrupts and wake-up from low power modes) */ |
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111 | |||
196 | killagreg | 112 | WIU->CTRL &= ~WIU_Enable ; |
1 | ingob | 113 | } |
114 | } |
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115 | |||
116 | /******************************************************************************* |
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117 | * Function Name : WIU_GenerateSWInterrupt |
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118 | * Description : Generates a Software interrupt. |
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119 | * Input : - WIU_Line: specifies the WIU lines to be enabled or |
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120 | * disabled. This parameter can be: |
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121 | * - WIU_Linex: External interrupt line x where x(0..31) |
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122 | * Output : None |
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123 | * Return : None |
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124 | *******************************************************************************/ |
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125 | void WIU_GenerateSWInterrupt(u32 WIU_Line) |
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126 | { |
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127 | WIU->INTR |= WIU_Line; |
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128 | } |
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129 | |||
130 | /******************************************************************************* |
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131 | * Function Name : WIU_GetFlagStatus |
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132 | * Description : Checks whether the specified WIU line flag is set or not. |
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133 | * Input : - WIU_Line: specifies the WIU lines flag to check. |
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134 | * This parameter can be: |
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135 | * - WIU_Linex: External interrupt line x where x(0..31) |
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136 | * Output : None |
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137 | * Return : The new state of WIU_Line (SET or RESET). |
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138 | *******************************************************************************/ |
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139 | FlagStatus WIU_GetFlagStatus(u32 WIU_Line) |
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140 | { |
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141 | if((WIU->PR & WIU_Line) != RESET) |
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142 | { |
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143 | return SET; |
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144 | } |
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145 | else |
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146 | { |
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147 | return RESET; |
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148 | } |
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149 | } |
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150 | |||
151 | /******************************************************************************* |
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152 | * Function Name : WIU_ClearFlag |
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153 | * Description : Clears the WIU’s line pending flags. |
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154 | * Input : - WIU_Line: specifies the WIU lines flags to clear. |
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155 | * This parameter can be: |
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156 | * - WIU_Linex: External interrupt line x where x(0..31) |
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157 | * Output : None |
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158 | * Return : None |
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159 | *******************************************************************************/ |
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160 | void WIU_ClearFlag(u32 WIU_Line) |
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161 | { |
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162 | WIU->PR = WIU_Line; |
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163 | } |
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164 | |||
165 | /******************************************************************************* |
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166 | * Function Name : WIU_GetITStatus |
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167 | * Description : Checks whether the specified WIU line is asserted or not. |
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168 | * Input : - WIU_Line: specifies the WIU lines to check. |
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169 | * This parameter can be: |
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170 | * - WIU_Linex: External interrupt line x where x(0..31) |
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171 | * Output : None |
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172 | * Return : The new state of WIU_Line (SET or RESET). |
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173 | *******************************************************************************/ |
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174 | ITStatus WIU_GetITStatus(u32 WIU_Line) |
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175 | { |
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176 | if(((WIU->PR & WIU_Line) != RESET)&& ((WIU->MR & WIU_Line) != RESET)) |
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177 | { |
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178 | return SET; |
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179 | } |
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180 | else |
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181 | { |
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182 | return RESET; |
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183 | } |
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184 | } |
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185 | |||
186 | /******************************************************************************* |
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187 | * Function Name : WIU_ClearITPendingBit |
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188 | * Description : Clears the WIU’s line pending bits. |
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189 | * Input : - WIU_Line: specifies the WIU lines to clear. |
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190 | * This parameter can be: |
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191 | * - WIU_Linex: External interrupt line x where x(0..31) |
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192 | * Output : None |
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193 | * Return : None |
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194 | *******************************************************************************/ |
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195 | void WIU_ClearITPendingBit(u32 WIU_Line) |
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196 | { |
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197 | WIU->PR = WIU_Line; |
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198 | } |
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199 | |||
200 | |||
196 | killagreg | 201 | /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/ |