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| /******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** |
| * File Name : 91x_ahbapb.c |
| * Author : MCD Application Team |
| * Version : V2.1 |
| * Date : 12/22/2008 |
| * Description : This file provides all the AHBAPB firmware functions. |
| ******************************************************************************** |
| * THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS |
| * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. |
| * AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, |
| * INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE |
| * CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING |
| * INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. |
| *******************************************************************************/ |
| |
| /* Includes ------------------------------------------------------------------*/ |
| #include "91x_ahbapb.h" |
| |
| /* Private typedef -----------------------------------------------------------*/ |
| /* Private define ------------------------------------------------------------*/ |
| |
| /* Private macro -------------------------------------------------------------*/ |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private function prototypes -----------------------------------------------*/ |
| /* Private functions ---------------------------------------------------------*/ |
| #define AHBAPB_SplitCounter_Mask 0xFFE0FFFF |
| #define AHBAPB_SetTimeOut_Mask 0xFFFFFFE0 |
| #define AHBAPB_Address_Mask 0xFEFFFFFF |
| #define AHBAPB_FLAG_RW_Mask 0x01000000 |
| /******************************************************************************* |
| * Function Name : AHBAPB_DeInit |
| * Description : Deinitializes the AHBAPBx peripheral registers to their default |
| * reset values. |
| * Input : AHBAPBx: where x can be 0 or 1 to select the AHBAPB peripheral. |
| * Output : None |
| * Return : None |
| *******************************************************************************/ |
| void AHBAPB_DeInit(AHBAPB_TypeDef* AHBAPBx) |
| { |
| AHBAPBx->BCR = 0x00000000; |
| AHBAPBx->BSR = 0x00000000; |
| } |
| /******************************************************************************* |
| * Function Name : AHBAPB_Init |
| * Description : Initializes the AHBAPBx peripheral according to the specified |
| * parameters in the AHBAPB_InitStruct . |
| * Input :- AHBAPBx: where x can be 0 or 1 to select the AHBAPB peripheral. |
| * - AHBAPB_InitStruct: pointer to a AHBAPB_InitTypeDef structure that |
| * contains the configuration information for the specified AHBAPB |
| * peripheral. |
| * Output : None |
| * Return : None |
| *******************************************************************************/ |
| void AHBAPB_Init(AHBAPB_TypeDef* AHBAPBx, AHBAPB_InitTypeDef* AHBAPB_InitStruct) |
| { |
| |
| if(AHBAPB_InitStruct->AHBAPB_Split == AHBAPB_Split_Enable) |
| { |
| /* Set SPLITEN bit;*/ |
| AHBAPBx->BCR |= AHBAPB_Split_Enable; |
| /*Split_CNT bits[20:16]*/ |
| AHBAPBx->BCR &= AHBAPB_SplitCounter_Mask; |
| AHBAPBx->BCR |= (AHBAPB_InitStruct->AHBAPB_SplitCounter)<<16; |
| } |
| else |
| { |
| /*/ Clear SPLITEN bit;*/ |
| AHBAPBx->BCR &= AHBAPB_Split_Disable; |
| } |
| /*APB Time out*/ |
| if(AHBAPB_InitStruct->AHBAPB_Error == AHBAPB_Error_Enable) |
| { |
| /* Set ERREN bit*/ |
| AHBAPBx->BCR |= AHBAPB_Error_Enable; |
| /*Time ouit counter*/ |
| AHBAPBx->BCR &= AHBAPB_SetTimeOut_Mask; |
| AHBAPBx->BCR |= AHBAPB_InitStruct->AHBAPB_SetTimeOut; |
| } |
| else |
| { |
| /* Clear ERREN bit*/ |
| AHBAPBx->BCR &= AHBAPB_Error_Disable; |
| } |
| } |
| |
| /******************************************************************************* |
| * Function Name : AHBAPB_StructInit |
| * Description : Initialize the AHBAPB Init Structure parameters |
| * Input : AHBAPB_InitStruct : pointer to a AHBAPB_InitTypeDef structure |
| * which will be initialized. |
| * Output : None |
| * Return : None |
| *******************************************************************************/ |
| void AHBAPB_StructInit(AHBAPB_InitTypeDef* AHBAPB_InitStruct) |
| { |
| /* Reset AHBAPB init structure parameters values */ |
| AHBAPB_InitStruct->AHBAPB_Split = AHBAPB_Split_Enable; |
| AHBAPB_InitStruct->AHBAPB_SplitCounter = 0xFF; |
| AHBAPB_InitStruct->AHBAPB_Error = AHBAPB_Error_Enable; |
| AHBAPB_InitStruct->AHBAPB_SetTimeOut = 0xFF; |
| |
| } |
| |
| /******************************************************************************* |
| * Function Name : AHBAPB_GetFlagStatus |
| * Description : Checks whether the specified AHBAPB flag is set or not. |
| * Input : - AHBAPB: where x can be 0 or 1 to select the AHBAPB peripheral |
| * - AHBAPB_FLAG: specifies the flag to check. |
| * This parameter can be one of the following values: |
| * - AHBAPB_FLAG_ERROR: error flag |
| * - AHBAPB_FLAG_OUTM : Out of Memory flag |
| * - AHBAPB_FLAG_APBT : APB Time-out flag |
| * - AHBAPB_FLAG_RW : Access type flag |
| * Output : None |
| * Return : The new state of AHBAPB_FLAG (SET or RESET). |
| *******************************************************************************/ |
| FlagStatus AHBAPB_GetFlagStatus(AHBAPB_TypeDef* AHBAPBx, u8 AHBAPB_FLAG) |
| { |
| if(AHBAPB_FLAG == AHBAPB_FLAG_RW) |
| { |
| if ((AHBAPBx->PAER & AHBAPB_FLAG_RW_Mask) == RESET) |
| { |
| return RESET; |
| } |
| else |
| { |
| return SET; |
| } |
| } |
| else |
| { |
| if ((AHBAPBx->BSR & AHBAPB_FLAG) == RESET) |
| { |
| return RESET; |
| } |
| else |
| { |
| return SET; |
| } |
| } |
| } |
| /******************************************************************************* |
| * Function Name : AHBAPB_ClearFlag |
| * Description : Clears the AHBAPBx flags. |
| * Input : - AHBAPB: where x can be 0 or 1 to select the AHBAPB peripheral |
| * - AHBAPB_FLAG: flags to clear. This parameter one of the |
| * following values: |
| * - AHBAPB_FLAG_ERROR: error flag |
| * - AHBAPB_FLAG_OUTM : Out of Memory flag |
| * - AHBAPB_FLAG_APBT : APB Time-out flag |
| * Output : None |
| * Return : None |
| *******************************************************************************/ |
| void AHBAPB_ClearFlag(AHBAPB_TypeDef* AHBAPBx, u8 AHBAPB_FLAG) |
| { |
| /* Clear the flag */ |
| AHBAPBx->BSR &= ~AHBAPB_FLAG; |
| } |
| /******************************************************************************* |
| * Function Name : AHBAPB_GetPeriphAddrError |
| * Description : Gets the AHBAPB error address peripherals. |
| * Input : - AHBAPB: where x can be 0 or 1 to select the AHBAPB peripheral |
| * Output : None |
| * Return : The Peropheral address error |
| *******************************************************************************/ |
| u32 AHBAPB_GetPeriphAddrError(AHBAPB_TypeDef* AHBAPBx) |
| { |
| u32 AHBAPB_Address = 0x00000000; |
| |
| /*Return Oeripheral address without RW bit*/ |
| AHBAPB_Address = (AHBAPBx->PAER)& AHBAPB_Address_Mask; |
| return (AHBAPB_Address); |
| } |
| /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/ |