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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****/ |