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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [ARM7_STR75x_GCC/] [STLibrary/] [src/] [75x_eic.c] - Rev 584
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/******************** (C) COPYRIGHT 2006 STMicroelectronics ******************** * File Name : 75x_eic.c * Author : MCD Application Team * Date First Issued : 03/10/2006 * Description : This file provides all the EIC software functions. ******************************************************************************** * History: * 07/17/2006 : V1.0 * 03/10/2006 : V0.1 ******************************************************************************** * 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 "75x_eic.h" /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ #define EIC_IRQEnable_Mask 0x00000001 #define EIC_IRQDisable_Mask 0xFFFFFFFE #define EIC_FIQEnable_Mask 0x00000002 #define EIC_FIQDisable_Mask 0xFFFFFFFD #define EIC_SIPL_Mask 0x0000000F #define EIC_SIPL_Reset_Mask 0xFFFFFFF0 /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Private function prototypes -----------------------------------------------*/ /* Private functions ---------------------------------------------------------*/ /******************************************************************************* * Function Name : EIC_DeInit * Description : Deinitializes the EIC peripheral registers to their default * reset values. * Input : None * Output : None * Return : None *******************************************************************************/ void EIC_DeInit(void) { EIC->ICR = 0x00; EIC->CIPR = 0x00; EIC->FIR = 0x0C; EIC->IER = 0x00; EIC->IPR = 0xFFFFFFFF; } /******************************************************************************* * Function Name : EIC_IRQInit * Description : Configures the IRQ channels according to the specified * parameters in the EIC_IRQInitStruct. * Input : EIC_IRQInitStruct: pointer to a EIC_IRQInitTypeDef structure. * Output : None * Return : None *******************************************************************************/ void EIC_IRQInit(EIC_IRQInitTypeDef* EIC_IRQInitStruct) { u32 Tmp = 0; if(EIC_IRQInitStruct->EIC_IRQChannelCmd == ENABLE) { /* Enable the selected IRQ channel */ EIC->IER |= 1 << EIC_IRQInitStruct->EIC_IRQChannel; /* Configure the selected IRQ channel priority ***************************/ /* Clear SIPL[3:0] bits */ EIC->SIRn[EIC_IRQInitStruct->EIC_IRQChannel] &= EIC_SIPL_Reset_Mask; /* Configure SIPL[3:0] bits according to EIC_IRQChannelPriority parameter */ Tmp = EIC_IRQInitStruct->EIC_IRQChannelPriority & EIC_SIPL_Mask; EIC->SIRn[EIC_IRQInitStruct->EIC_IRQChannel] |= Tmp; } else { /* Disable the select IRQ channel */ EIC->IER &=~ (1 << EIC_IRQInitStruct->EIC_IRQChannel); } } /******************************************************************************* * Function Name : EIC_FIQInit * Description : Configures the FIQ channels according to the specified * parameters in the EIC_FIQInitStruct. * Input : EIC_FIQInitStruct: pointer to a EIC_FIQInitTypeDef structure. * Output : None * Return : None *******************************************************************************/ void EIC_FIQInit(EIC_FIQInitTypeDef* EIC_FIQInitStruct) { if(EIC_FIQInitStruct->EIC_FIQChannelCmd == ENABLE) { /* Enable the selected FIQ channel */ EIC->FIER |= EIC_FIQInitStruct->EIC_FIQChannel ; } else { /* Disable the selected FIQ channel */ EIC->FIER &= ~EIC_FIQInitStruct->EIC_FIQChannel; } } /******************************************************************************* * Function Name : EIC_IRQStructInit * Description : Fills each EIC_IRQInitStruct member with its default value. * Input : EIC_IRQInitStruct: pointer to a EIC_IRQInitTypeDef structure * which will be initialized. * Output : None * Return : None *******************************************************************************/ void EIC_IRQStructInit(EIC_IRQInitTypeDef* EIC_IRQInitStruct) { EIC_IRQInitStruct->EIC_IRQChannel = 0x1F; EIC_IRQInitStruct->EIC_IRQChannelPriority = 0; EIC_IRQInitStruct->EIC_IRQChannelCmd = DISABLE; } /******************************************************************************* * Function Name : EIC_FIQStructInit * Description : Fills each EIC_FIQInitStruct member with its default value. * Input : EIC_FIQInitStruct: pointer to a EIC_FIQInitTypeDef structure * which will be initialized. * Output : None * Return : None *******************************************************************************/ void EIC_FIQStructInit(EIC_FIQInitTypeDef* EIC_FIQInitStruct) { EIC_FIQInitStruct->EIC_FIQChannel = 0x03; EIC_FIQInitStruct->EIC_FIQChannelCmd = DISABLE; } /******************************************************************************* * Function Name : EIC_IRQCmd * Description : Enables or disables EIC IRQ output request to CPU. * Input : NewState: new state of the EIC IRQ output request to CPU. * This parameter can be: ENABLE or DISABLE. * Output : None * Return : None *******************************************************************************/ void EIC_IRQCmd(FunctionalState NewState) { if(NewState == ENABLE) { /* Enable EIC IRQ output request to CPU */ EIC->ICR |= EIC_IRQEnable_Mask; } else { /* Disable EIC IRQ output request to CPU */ EIC->ICR &= EIC_IRQDisable_Mask; } } /******************************************************************************* * Function Name : EIC_FIQCmd * Description : Enables or disables EIC FIQ output request to CPU. * Input : NewState: new state of the EIC FIQ output request to CPU. * This parameter can be: ENABLE or DISABLE. * Output : None * Return : None *******************************************************************************/ void EIC_FIQCmd(FunctionalState NewState) { if(NewState == ENABLE) { /* Enable EIC FIQ output request to CPU */ EIC->ICR |= EIC_FIQEnable_Mask; } else { /* Disable EIC FIQ output request to CPU */ EIC->ICR &= EIC_FIQDisable_Mask; } } /******************************************************************************* * Function Name : EIC_GetCurrentIRQChannel * Description : Returns the current served IRQ channel identifier. * Input : None * Output : None * Return : The current served IRQ channel. *******************************************************************************/ u8 EIC_GetCurrentIRQChannel(void) { /* Read and return the CIC[4:0] bits of CICR register */ return ((u8) (EIC->CICR)); } /******************************************************************************* * Function Name : EIC_GetCurrentIRQChannelPriority * Description : Returns the priority level of the current served IRQ channel. * Input : None * Output : None * Return : The priority level of the current served IRQ channel. *******************************************************************************/ u8 EIC_GetCurrentIRQChannelPriority(void) { /* Read and return the CIP[3:0] bits of CIPR register */ return ((u8) (EIC->CIPR)); } /******************************************************************************* * Function Name : EIC_CurrentIRQPriorityConfig * Description : Changes the priority of the current served IRQ channel. * The new priority value must be higher, or equal, than the * priority value associated to the interrupt channel currently * serviced. * Input : NewPriority: new priority value of the IRQ interrupt routine * currently serviced. * Output : None * Return : None *******************************************************************************/ void EIC_CurrentIRQPriorityConfig(u8 NewPriority) { /* Disable EIC IRQ output request to CPU */ EIC->ICR &= EIC_IRQDisable_Mask; /* Change the current priority */ EIC->CIPR = NewPriority; /* Enable EIC IRQ output request to CPU */ EIC->ICR |= EIC_IRQEnable_Mask; } /******************************************************************************* * Function Name : EIC_GetCurrentFIQChannel * Description : Returns the current served FIQ channel identifier. * Input : None * Output : None * Return : The current served FIQ channel. *******************************************************************************/ u8 EIC_GetCurrentFIQChannel(void) { /* Read and return the FIP[1:0] bits of FIPR register */ return ((u8) (EIC->FIPR)); } /******************************************************************************* * Function Name : EIC_ClearFIQPendingBit * Description : Clears the pending bit of the selected FIQ Channel. * Input : EIC_FIQChannel: specifies the FIQ channel to clear its * pending bit. * Output : None * Return : None *******************************************************************************/ void EIC_ClearFIQPendingBit(u8 EIC_FIQChannel) { /* Clear the correspondent FIQ pending bit */ EIC->FIPR = EIC_FIQChannel ; } /******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****/
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