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196 | killagreg | 1 | /******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** |
1 | ingob | 2 | * File Name : 91x_ahbapb.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 AHBAPB firmware functions. |
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1 | ingob | 7 | ******************************************************************************** |
8 | * THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS |
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9 | * WITH 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, |
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11 | * INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE |
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12 | * CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING |
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13 | * INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. |
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14 | *******************************************************************************/ |
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15 | |||
16 | /* Includes ------------------------------------------------------------------*/ |
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17 | #include "91x_ahbapb.h" |
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18 | |||
19 | /* Private typedef -----------------------------------------------------------*/ |
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20 | /* Private define ------------------------------------------------------------*/ |
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21 | |||
22 | /* Private macro -------------------------------------------------------------*/ |
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23 | /* Private variables ---------------------------------------------------------*/ |
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24 | /* Private function prototypes -----------------------------------------------*/ |
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25 | /* Private functions ---------------------------------------------------------*/ |
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26 | #define AHBAPB_SplitCounter_Mask 0xFFE0FFFF |
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27 | #define AHBAPB_SetTimeOut_Mask 0xFFFFFFE0 |
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28 | #define AHBAPB_Address_Mask 0xFEFFFFFF |
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29 | #define AHBAPB_FLAG_RW_Mask 0x01000000 |
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30 | /******************************************************************************* |
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31 | * Function Name : AHBAPB_DeInit |
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32 | * Description : Deinitializes the AHBAPBx peripheral registers to their default |
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33 | * reset values. |
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34 | * Input : AHBAPBx: where x can be 0 or 1 to select the AHBAPB peripheral. |
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35 | * Output : None |
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36 | * Return : None |
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37 | *******************************************************************************/ |
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38 | void AHBAPB_DeInit(AHBAPB_TypeDef* AHBAPBx) |
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39 | { |
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40 | AHBAPBx->BCR = 0x00000000; |
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41 | AHBAPBx->BSR = 0x00000000; |
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42 | } |
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43 | /******************************************************************************* |
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44 | * Function Name : AHBAPB_Init |
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45 | * Description : Initializes the AHBAPBx peripheral according to the specified |
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46 | * parameters in the AHBAPB_InitStruct . |
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47 | * Input :- AHBAPBx: where x can be 0 or 1 to select the AHBAPB peripheral. |
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48 | * - AHBAPB_InitStruct: pointer to a AHBAPB_InitTypeDef structure that |
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49 | * contains the configuration information for the specified AHBAPB |
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50 | * peripheral. |
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51 | * Output : None |
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52 | * Return : None |
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53 | *******************************************************************************/ |
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54 | void AHBAPB_Init(AHBAPB_TypeDef* AHBAPBx, AHBAPB_InitTypeDef* AHBAPB_InitStruct) |
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55 | { |
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56 | |||
57 | if(AHBAPB_InitStruct->AHBAPB_Split == AHBAPB_Split_Enable) |
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58 | { |
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59 | /* Set SPLITEN bit;*/ |
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60 | AHBAPBx->BCR |= AHBAPB_Split_Enable; |
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61 | /*Split_CNT bits[20:16]*/ |
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62 | AHBAPBx->BCR &= AHBAPB_SplitCounter_Mask; |
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63 | AHBAPBx->BCR |= (AHBAPB_InitStruct->AHBAPB_SplitCounter)<<16; |
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64 | } |
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65 | else |
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66 | { |
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67 | /*/ Clear SPLITEN bit;*/ |
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68 | AHBAPBx->BCR &= AHBAPB_Split_Disable; |
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69 | } |
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70 | /*APB Time out*/ |
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71 | if(AHBAPB_InitStruct->AHBAPB_Error == AHBAPB_Error_Enable) |
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72 | { |
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73 | /* Set ERREN bit*/ |
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74 | AHBAPBx->BCR |= AHBAPB_Error_Enable; |
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75 | /*Time ouit counter*/ |
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76 | AHBAPBx->BCR &= AHBAPB_SetTimeOut_Mask; |
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77 | AHBAPBx->BCR |= AHBAPB_InitStruct->AHBAPB_SetTimeOut; |
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78 | } |
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79 | else |
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80 | { |
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81 | /* Clear ERREN bit*/ |
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82 | AHBAPBx->BCR &= AHBAPB_Error_Disable; |
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83 | } |
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84 | } |
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85 | |||
86 | /******************************************************************************* |
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87 | * Function Name : AHBAPB_StructInit |
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88 | * Description : Initialize the AHBAPB Init Structure parameters |
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89 | * Input : AHBAPB_InitStruct : pointer to a AHBAPB_InitTypeDef structure |
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90 | * which will be initialized. |
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91 | * Output : None |
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92 | * Return : None |
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93 | *******************************************************************************/ |
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94 | void AHBAPB_StructInit(AHBAPB_InitTypeDef* AHBAPB_InitStruct) |
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95 | { |
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96 | /* Reset AHBAPB init structure parameters values */ |
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97 | AHBAPB_InitStruct->AHBAPB_Split = AHBAPB_Split_Enable; |
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98 | AHBAPB_InitStruct->AHBAPB_SplitCounter = 0xFF; |
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99 | AHBAPB_InitStruct->AHBAPB_Error = AHBAPB_Error_Enable; |
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100 | AHBAPB_InitStruct->AHBAPB_SetTimeOut = 0xFF; |
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101 | |||
102 | } |
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103 | |||
104 | /******************************************************************************* |
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105 | * Function Name : AHBAPB_GetFlagStatus |
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106 | * Description : Checks whether the specified AHBAPB flag is set or not. |
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107 | * Input : - AHBAPB: where x can be 0 or 1 to select the AHBAPB peripheral |
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108 | * - AHBAPB_FLAG: specifies the flag to check. |
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109 | * This parameter can be one of the following values: |
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110 | * - AHBAPB_FLAG_ERROR: error flag |
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111 | * - AHBAPB_FLAG_OUTM : Out of Memory flag |
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112 | * - AHBAPB_FLAG_APBT : APB Time-out flag |
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113 | * - AHBAPB_FLAG_RW : Access type flag |
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114 | * Output : None |
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115 | * Return : The new state of AHBAPB_FLAG (SET or RESET). |
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116 | *******************************************************************************/ |
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117 | FlagStatus AHBAPB_GetFlagStatus(AHBAPB_TypeDef* AHBAPBx, u8 AHBAPB_FLAG) |
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118 | { |
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119 | if(AHBAPB_FLAG == AHBAPB_FLAG_RW) |
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120 | { |
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121 | if ((AHBAPBx->PAER & AHBAPB_FLAG_RW_Mask) == RESET) |
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122 | { |
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123 | return RESET; |
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124 | } |
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125 | else |
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126 | { |
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127 | return SET; |
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128 | } |
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129 | } |
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130 | else |
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131 | { |
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132 | if ((AHBAPBx->BSR & AHBAPB_FLAG) == RESET) |
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133 | { |
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134 | return RESET; |
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135 | } |
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136 | else |
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137 | { |
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138 | return SET; |
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139 | } |
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140 | } |
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141 | } |
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142 | /******************************************************************************* |
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143 | * Function Name : AHBAPB_ClearFlag |
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144 | * Description : Clears the AHBAPBx flags. |
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145 | * Input : - AHBAPB: where x can be 0 or 1 to select the AHBAPB peripheral |
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146 | * - AHBAPB_FLAG: flags to clear. This parameter one of the |
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147 | * following values: |
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148 | * - AHBAPB_FLAG_ERROR: error flag |
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149 | * - AHBAPB_FLAG_OUTM : Out of Memory flag |
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150 | * - AHBAPB_FLAG_APBT : APB Time-out flag |
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151 | * Output : None |
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152 | * Return : None |
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153 | *******************************************************************************/ |
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154 | void AHBAPB_ClearFlag(AHBAPB_TypeDef* AHBAPBx, u8 AHBAPB_FLAG) |
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155 | { |
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156 | /* Clear the flag */ |
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157 | AHBAPBx->BSR &= ~AHBAPB_FLAG; |
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158 | } |
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159 | /******************************************************************************* |
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160 | * Function Name : AHBAPB_GetPeriphAddrError |
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161 | * Description : Gets the AHBAPB error address peripherals. |
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162 | * Input : - AHBAPB: where x can be 0 or 1 to select the AHBAPB peripheral |
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163 | * Output : None |
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164 | * Return : The Peropheral address error |
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165 | *******************************************************************************/ |
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166 | u32 AHBAPB_GetPeriphAddrError(AHBAPB_TypeDef* AHBAPBx) |
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167 | { |
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168 | u32 AHBAPB_Address = 0x00000000; |
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169 | |||
170 | /*Return Oeripheral address without RW bit*/ |
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171 | AHBAPB_Address = (AHBAPBx->PAER)& AHBAPB_Address_Mask; |
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172 | return (AHBAPB_Address); |
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173 | } |
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196 | killagreg | 174 | /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/ |