Rev 43 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | ingob | 1 | /******************** (C) COPYRIGHT 2006 STMicroelectronics ******************** |
| 2 | * File Name : 91x_ahbapb.c |
||
| 3 | * Author : MCD Application Team |
||
| 4 | * Date First Issued : 05/18/2006 : Version 1.0 |
||
| 5 | * Description : This file provides all the AHBAPB software functions. |
||
| 6 | ******************************************************************************** |
||
| 7 | * History: |
||
| 8 | * 05/22/2007 : Version 1.2 |
||
| 9 | * 05/24/2006 : Version 1.1 |
||
| 10 | * 05/18/2006 : Version 1.0 |
||
| 11 | ******************************************************************************** |
||
| 12 | * THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS |
||
| 13 | * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. |
||
| 14 | * AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, |
||
| 15 | * INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE |
||
| 16 | * CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING |
||
| 17 | * INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. |
||
| 18 | *******************************************************************************/ |
||
| 19 | |||
| 20 | /* Includes ------------------------------------------------------------------*/ |
||
| 21 | #include "91x_ahbapb.h" |
||
| 22 | |||
| 23 | /* Private typedef -----------------------------------------------------------*/ |
||
| 24 | /* Private define ------------------------------------------------------------*/ |
||
| 25 | |||
| 26 | /* Private macro -------------------------------------------------------------*/ |
||
| 27 | /* Private variables ---------------------------------------------------------*/ |
||
| 28 | /* Private function prototypes -----------------------------------------------*/ |
||
| 29 | /* Private functions ---------------------------------------------------------*/ |
||
| 30 | #define AHBAPB_SplitCounter_Mask 0xFFE0FFFF |
||
| 31 | #define AHBAPB_SetTimeOut_Mask 0xFFFFFFE0 |
||
| 32 | #define AHBAPB_Address_Mask 0xFEFFFFFF |
||
| 33 | #define AHBAPB_FLAG_RW_Mask 0x01000000 |
||
| 34 | /******************************************************************************* |
||
| 35 | * Function Name : AHBAPB_DeInit |
||
| 36 | * Description : Deinitializes the AHBAPBx peripheral registers to their default |
||
| 37 | * reset values. |
||
| 38 | * Input : AHBAPBx: where x can be 0 or 1 to select the AHBAPB peripheral. |
||
| 39 | * Output : None |
||
| 40 | * Return : None |
||
| 41 | *******************************************************************************/ |
||
| 42 | void AHBAPB_DeInit(AHBAPB_TypeDef* AHBAPBx) |
||
| 43 | { |
||
| 44 | AHBAPBx->BCR = 0x00000000; |
||
| 45 | AHBAPBx->BSR = 0x00000000; |
||
| 46 | } |
||
| 47 | /******************************************************************************* |
||
| 48 | * Function Name : AHBAPB_Init |
||
| 49 | * Description : Initializes the AHBAPBx peripheral according to the specified |
||
| 50 | * parameters in the AHBAPB_InitStruct . |
||
| 51 | * Input :- AHBAPBx: where x can be 0 or 1 to select the AHBAPB peripheral. |
||
| 52 | * - AHBAPB_InitStruct: pointer to a AHBAPB_InitTypeDef structure that |
||
| 53 | * contains the configuration information for the specified AHBAPB |
||
| 54 | * peripheral. |
||
| 55 | * Output : None |
||
| 56 | * Return : None |
||
| 57 | *******************************************************************************/ |
||
| 58 | void AHBAPB_Init(AHBAPB_TypeDef* AHBAPBx, AHBAPB_InitTypeDef* AHBAPB_InitStruct) |
||
| 59 | { |
||
| 60 | |||
| 61 | if(AHBAPB_InitStruct->AHBAPB_Split == AHBAPB_Split_Enable) |
||
| 62 | { |
||
| 63 | /* Set SPLITEN bit;*/ |
||
| 64 | AHBAPBx->BCR |= AHBAPB_Split_Enable; |
||
| 65 | /*Split_CNT bits[20:16]*/ |
||
| 66 | AHBAPBx->BCR &= AHBAPB_SplitCounter_Mask; |
||
| 67 | AHBAPBx->BCR |= (AHBAPB_InitStruct->AHBAPB_SplitCounter)<<16; |
||
| 68 | } |
||
| 69 | else |
||
| 70 | { |
||
| 71 | /*/ Clear SPLITEN bit;*/ |
||
| 72 | AHBAPBx->BCR &= AHBAPB_Split_Disable; |
||
| 73 | } |
||
| 74 | /*APB Time out*/ |
||
| 75 | if(AHBAPB_InitStruct->AHBAPB_Error == AHBAPB_Error_Enable) |
||
| 76 | { |
||
| 77 | /* Set ERREN bit*/ |
||
| 78 | AHBAPBx->BCR |= AHBAPB_Error_Enable; |
||
| 79 | /*Time ouit counter*/ |
||
| 80 | AHBAPBx->BCR &= AHBAPB_SetTimeOut_Mask; |
||
| 81 | AHBAPBx->BCR |= AHBAPB_InitStruct->AHBAPB_SetTimeOut; |
||
| 82 | } |
||
| 83 | else |
||
| 84 | { |
||
| 85 | /* Clear ERREN bit*/ |
||
| 86 | AHBAPBx->BCR &= AHBAPB_Error_Disable; |
||
| 87 | } |
||
| 88 | } |
||
| 89 | |||
| 90 | /******************************************************************************* |
||
| 91 | * Function Name : AHBAPB_StructInit |
||
| 92 | * Description : Initialize the AHBAPB Init Structure parameters |
||
| 93 | * Input : AHBAPB_InitStruct : pointer to a AHBAPB_InitTypeDef structure |
||
| 94 | * which will be initialized. |
||
| 95 | * Output : None |
||
| 96 | * Return : None |
||
| 97 | *******************************************************************************/ |
||
| 98 | void AHBAPB_StructInit(AHBAPB_InitTypeDef* AHBAPB_InitStruct) |
||
| 99 | { |
||
| 100 | /* Reset AHBAPB init structure parameters values */ |
||
| 101 | AHBAPB_InitStruct->AHBAPB_Split = AHBAPB_Split_Enable; |
||
| 102 | AHBAPB_InitStruct->AHBAPB_SplitCounter = 0xFF; |
||
| 103 | AHBAPB_InitStruct->AHBAPB_Error = AHBAPB_Error_Enable; |
||
| 104 | AHBAPB_InitStruct->AHBAPB_SetTimeOut = 0xFF; |
||
| 105 | |||
| 106 | } |
||
| 107 | |||
| 108 | /******************************************************************************* |
||
| 109 | * Function Name : AHBAPB_GetFlagStatus |
||
| 110 | * Description : Checks whether the specified AHBAPB flag is set or not. |
||
| 111 | * Input : - AHBAPB: where x can be 0 or 1 to select the AHBAPB peripheral |
||
| 112 | * - AHBAPB_FLAG: specifies the flag to check. |
||
| 113 | * This parameter can be one of the following values: |
||
| 114 | * - AHBAPB_FLAG_ERROR: error flag |
||
| 115 | * - AHBAPB_FLAG_OUTM : Out of Memory flag |
||
| 116 | * - AHBAPB_FLAG_APBT : APB Time-out flag |
||
| 117 | * - AHBAPB_FLAG_RW : Access type flag |
||
| 118 | * Output : None |
||
| 119 | * Return : The new state of AHBAPB_FLAG (SET or RESET). |
||
| 120 | *******************************************************************************/ |
||
| 121 | FlagStatus AHBAPB_GetFlagStatus(AHBAPB_TypeDef* AHBAPBx, u8 AHBAPB_FLAG) |
||
| 122 | { |
||
| 123 | if(AHBAPB_FLAG == AHBAPB_FLAG_RW) |
||
| 124 | { |
||
| 125 | if ((AHBAPBx->PAER & AHBAPB_FLAG_RW_Mask) == RESET) |
||
| 126 | { |
||
| 127 | return RESET; |
||
| 128 | } |
||
| 129 | else |
||
| 130 | { |
||
| 131 | return SET; |
||
| 132 | } |
||
| 133 | } |
||
| 134 | else |
||
| 135 | { |
||
| 136 | if ((AHBAPBx->BSR & AHBAPB_FLAG) == RESET) |
||
| 137 | { |
||
| 138 | return RESET; |
||
| 139 | } |
||
| 140 | else |
||
| 141 | { |
||
| 142 | return SET; |
||
| 143 | } |
||
| 144 | } |
||
| 145 | } |
||
| 146 | /******************************************************************************* |
||
| 147 | * Function Name : AHBAPB_ClearFlag |
||
| 148 | * Description : Clears the AHBAPBx flags. |
||
| 149 | * Input : - AHBAPB: where x can be 0 or 1 to select the AHBAPB peripheral |
||
| 150 | * - AHBAPB_FLAG: flags to clear. This parameter one of the |
||
| 151 | * following values: |
||
| 152 | * - AHBAPB_FLAG_ERROR: error flag |
||
| 153 | * - AHBAPB_FLAG_OUTM : Out of Memory flag |
||
| 154 | * - AHBAPB_FLAG_APBT : APB Time-out flag |
||
| 155 | * Output : None |
||
| 156 | * Return : None |
||
| 157 | *******************************************************************************/ |
||
| 158 | void AHBAPB_ClearFlag(AHBAPB_TypeDef* AHBAPBx, u8 AHBAPB_FLAG) |
||
| 159 | { |
||
| 160 | /* Clear the flag */ |
||
| 161 | AHBAPBx->BSR &= ~AHBAPB_FLAG; |
||
| 162 | } |
||
| 163 | /******************************************************************************* |
||
| 164 | * Function Name : AHBAPB_GetPeriphAddrError |
||
| 165 | * Description : Gets the AHBAPB error address peripherals. |
||
| 166 | * Input : - AHBAPB: where x can be 0 or 1 to select the AHBAPB peripheral |
||
| 167 | * Output : None |
||
| 168 | * Return : The Peropheral address error |
||
| 169 | *******************************************************************************/ |
||
| 170 | u32 AHBAPB_GetPeriphAddrError(AHBAPB_TypeDef* AHBAPBx) |
||
| 171 | { |
||
| 172 | u32 AHBAPB_Address = 0x00000000; |
||
| 173 | |||
| 174 | /*Return Oeripheral address without RW bit*/ |
||
| 175 | AHBAPB_Address = (AHBAPBx->PAER)& AHBAPB_Address_Mask; |
||
| 176 | return (AHBAPB_Address); |
||
| 177 | } |
||
| 178 | /******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****/ |