From e7d600494579ef319b20221769c3b2fe12962243 Mon Sep 17 00:00:00 2001 From: bnewbold Date: Tue, 30 Mar 2010 20:52:45 -0400 Subject: Major hierarchy reorganization; see README. copy-to-ide and Makefile updated to conform; .gitignore added; LICENSE added --- stm32lib/src/stm32f10x_nvic.c | 751 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 751 insertions(+) create mode 100644 stm32lib/src/stm32f10x_nvic.c (limited to 'stm32lib/src/stm32f10x_nvic.c') diff --git a/stm32lib/src/stm32f10x_nvic.c b/stm32lib/src/stm32f10x_nvic.c new file mode 100644 index 0000000..0ce30af --- /dev/null +++ b/stm32lib/src/stm32f10x_nvic.c @@ -0,0 +1,751 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** +* File Name : stm32f10x_nvic.c +* Author : MCD Application Team +* Version : V2.0.2 +* Date : 07/11/2008 +* Description : This file provides all the NVIC firmware functions. +******************************************************************************** +* THE PRESENT FIRMWARE 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 FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING +* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. +*******************************************************************************/ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x_nvic.h" + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +#define AIRCR_VECTKEY_MASK ((u32)0x05FA0000) + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/******************************************************************************* +* Function Name : NVIC_DeInit +* Description : Deinitializes the NVIC peripheral registers to their default +* reset values. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_DeInit(void) +{ + u32 index = 0; + + NVIC->ICER[0] = 0xFFFFFFFF; + NVIC->ICER[1] = 0x0FFFFFFF; + NVIC->ICPR[0] = 0xFFFFFFFF; + NVIC->ICPR[1] = 0x0FFFFFFF; + + for(index = 0; index < 0x0F; index++) + { + NVIC->IPR[index] = 0x00000000; + } +} + +/******************************************************************************* +* Function Name : NVIC_SCBDeInit +* Description : Deinitializes the SCB peripheral registers to their default +* reset values. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_SCBDeInit(void) +{ + u32 index = 0x00; + + SCB->ICSR = 0x0A000000; + SCB->VTOR = 0x00000000; + SCB->AIRCR = AIRCR_VECTKEY_MASK; + SCB->SCR = 0x00000000; + SCB->CCR = 0x00000000; + for(index = 0; index < 0x03; index++) + { + SCB->SHPR[index] = 0; + } + SCB->SHCSR = 0x00000000; + SCB->CFSR = 0xFFFFFFFF; + SCB->HFSR = 0xFFFFFFFF; + SCB->DFSR = 0xFFFFFFFF; +} + +/******************************************************************************* +* Function Name : NVIC_PriorityGroupConfig +* Description : Configures the priority grouping: pre-emption priority +* and subpriority. +* Input : - NVIC_PriorityGroup: specifies the priority grouping bits +* length. This parameter can be one of the following values: +* - NVIC_PriorityGroup_0: 0 bits for pre-emption priority +* 4 bits for subpriority +* - NVIC_PriorityGroup_1: 1 bits for pre-emption priority +* 3 bits for subpriority +* - NVIC_PriorityGroup_2: 2 bits for pre-emption priority +* 2 bits for subpriority +* - NVIC_PriorityGroup_3: 3 bits for pre-emption priority +* 1 bits for subpriority +* - NVIC_PriorityGroup_4: 4 bits for pre-emption priority +* 0 bits for subpriority +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_PriorityGroupConfig(u32 NVIC_PriorityGroup) +{ + /* Check the parameters */ + assert_param(IS_NVIC_PRIORITY_GROUP(NVIC_PriorityGroup)); + + /* Set the PRIGROUP[10:8] bits according to NVIC_PriorityGroup value */ + SCB->AIRCR = AIRCR_VECTKEY_MASK | NVIC_PriorityGroup; +} + +/******************************************************************************* +* Function Name : NVIC_Init +* Description : Initializes the NVIC peripheral according to the specified +* parameters in the NVIC_InitStruct. +* Input : - NVIC_InitStruct: pointer to a NVIC_InitTypeDef structure +* that contains the configuration information for the +* specified NVIC peripheral. +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_Init(NVIC_InitTypeDef* NVIC_InitStruct) +{ + u32 tmppriority = 0x00, tmpreg = 0x00, tmpmask = 0x00; + u32 tmppre = 0, tmpsub = 0x0F; + + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NVIC_InitStruct->NVIC_IRQChannelCmd)); + assert_param(IS_NVIC_IRQ_CHANNEL(NVIC_InitStruct->NVIC_IRQChannel)); + assert_param(IS_NVIC_PREEMPTION_PRIORITY(NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority)); + assert_param(IS_NVIC_SUB_PRIORITY(NVIC_InitStruct->NVIC_IRQChannelSubPriority)); + + if (NVIC_InitStruct->NVIC_IRQChannelCmd != DISABLE) + { + /* Compute the Corresponding IRQ Priority --------------------------------*/ + tmppriority = (0x700 - (SCB->AIRCR & (u32)0x700))>> 0x08; + tmppre = (0x4 - tmppriority); + tmpsub = tmpsub >> tmppriority; + + tmppriority = (u32)NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority << tmppre; + tmppriority |= NVIC_InitStruct->NVIC_IRQChannelSubPriority & tmpsub; + + tmppriority = tmppriority << 0x04; + tmppriority = ((u32)tmppriority) << ((NVIC_InitStruct->NVIC_IRQChannel & (u8)0x03) * 0x08); + + tmpreg = NVIC->IPR[(NVIC_InitStruct->NVIC_IRQChannel >> 0x02)]; + tmpmask = (u32)0xFF << ((NVIC_InitStruct->NVIC_IRQChannel & (u8)0x03) * 0x08); + tmpreg &= ~tmpmask; + tmppriority &= tmpmask; + tmpreg |= tmppriority; + + NVIC->IPR[(NVIC_InitStruct->NVIC_IRQChannel >> 0x02)] = tmpreg; + + /* Enable the Selected IRQ Channels --------------------------------------*/ + NVIC->ISER[(NVIC_InitStruct->NVIC_IRQChannel >> 0x05)] = + (u32)0x01 << (NVIC_InitStruct->NVIC_IRQChannel & (u8)0x1F); + } + else + { + /* Disable the Selected IRQ Channels -------------------------------------*/ + NVIC->ICER[(NVIC_InitStruct->NVIC_IRQChannel >> 0x05)] = + (u32)0x01 << (NVIC_InitStruct->NVIC_IRQChannel & (u8)0x1F); + } +} + +/******************************************************************************* +* Function Name : NVIC_StructInit +* Description : Fills each NVIC_InitStruct member with its default value. +* Input : - NVIC_InitStruct: pointer to a NVIC_InitTypeDef structure which +* will be initialized. +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_StructInit(NVIC_InitTypeDef* NVIC_InitStruct) +{ + /* NVIC_InitStruct members default value */ + NVIC_InitStruct->NVIC_IRQChannel = 0x00; + NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority = 0x00; + NVIC_InitStruct->NVIC_IRQChannelSubPriority = 0x00; + NVIC_InitStruct->NVIC_IRQChannelCmd = DISABLE; +} + +/******************************************************************************* +* Function Name : NVIC_SETPRIMASK +* Description : Enables the PRIMASK priority: Raises the execution priority to 0. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_SETPRIMASK(void) +{ + __SETPRIMASK(); +} + +/******************************************************************************* +* Function Name : NVIC_RESETPRIMASK +* Description : Disables the PRIMASK priority. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_RESETPRIMASK(void) +{ + __RESETPRIMASK(); +} + +/******************************************************************************* +* Function Name : NVIC_SETFAULTMASK +* Description : Enables the FAULTMASK priority: Raises the execution priority to -1. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_SETFAULTMASK(void) +{ + __SETFAULTMASK(); +} + +/******************************************************************************* +* Function Name : NVIC_RESETFAULTMASK +* Description : Disables the FAULTMASK priority. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_RESETFAULTMASK(void) +{ + __RESETFAULTMASK(); +} + +/******************************************************************************* +* Function Name : NVIC_BASEPRICONFIG +* Description : The execution priority can be changed from 15 (lowest + configurable priority) to 1. Writing a zero value will disable +* the mask of execution priority. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_BASEPRICONFIG(u32 NewPriority) +{ + /* Check the parameters */ + assert_param(IS_NVIC_BASE_PRI(NewPriority)); + + __BASEPRICONFIG(NewPriority << 0x04); +} + +/******************************************************************************* +* Function Name : NVIC_GetBASEPRI +* Description : Returns the BASEPRI mask value. +* Input : None +* Output : None +* Return : BASEPRI register value +*******************************************************************************/ +u32 NVIC_GetBASEPRI(void) +{ + return (__GetBASEPRI()); +} + +/******************************************************************************* +* Function Name : NVIC_GetCurrentPendingIRQChannel +* Description : Returns the current pending IRQ channel identifier. +* Input : None +* Output : None +* Return : Pending IRQ Channel Identifier. +*******************************************************************************/ +u16 NVIC_GetCurrentPendingIRQChannel(void) +{ + return ((u16)((SCB->ICSR & (u32)0x003FF000) >> 0x0C)); +} + +/******************************************************************************* +* Function Name : NVIC_GetIRQChannelPendingBitStatus +* Description : Checks whether the specified IRQ Channel pending bit is set +* or not. +* Input : - NVIC_IRQChannel: specifies the interrupt pending bit to check. +* Output : None +* Return : The new state of IRQ Channel pending bit(SET or RESET). +*******************************************************************************/ +ITStatus NVIC_GetIRQChannelPendingBitStatus(u8 NVIC_IRQChannel) +{ + ITStatus pendingirqstatus = RESET; + u32 tmp = 0x00; + + /* Check the parameters */ + assert_param(IS_NVIC_IRQ_CHANNEL(NVIC_IRQChannel)); + + tmp = ((u32)0x01 << (NVIC_IRQChannel & (u32)0x1F)); + + if (((NVIC->ISPR[(NVIC_IRQChannel >> 0x05)]) & tmp) == tmp) + { + pendingirqstatus = SET; + } + else + { + pendingirqstatus = RESET; + } + return pendingirqstatus; +} + +/******************************************************************************* +* Function Name : NVIC_SetIRQChannelPendingBit +* Description : Sets the NVIC’s interrupt pending bit. +* Input : - NVIC_IRQChannel: specifies the interrupt pending bit to Set. +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_SetIRQChannelPendingBit(u8 NVIC_IRQChannel) +{ + /* Check the parameters */ + assert_param(IS_NVIC_IRQ_CHANNEL(NVIC_IRQChannel)); + + *(vu32*) 0xE000EF00 = (u32)NVIC_IRQChannel; +} + +/******************************************************************************* +* Function Name : NVIC_ClearIRQChannelPendingBit +* Description : Clears the NVIC’s interrupt pending bit. +* Input : - NVIC_IRQChannel: specifies the interrupt pending bit to clear. +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_ClearIRQChannelPendingBit(u8 NVIC_IRQChannel) +{ + /* Check the parameters */ + assert_param(IS_NVIC_IRQ_CHANNEL(NVIC_IRQChannel)); + + NVIC->ICPR[(NVIC_IRQChannel >> 0x05)] = (u32)0x01 << (NVIC_IRQChannel & (u32)0x1F); +} + +/******************************************************************************* +* Function Name : NVIC_GetCurrentActiveHandler +* Description : Returns the current active Handler (IRQ Channel and +* SystemHandler) identifier. +* Input : None +* Output : None +* Return : Active Handler Identifier. +*******************************************************************************/ +u16 NVIC_GetCurrentActiveHandler(void) +{ + return ((u16)(SCB->ICSR & (u32)0x3FF)); +} + +/******************************************************************************* +* Function Name : NVIC_GetIRQChannelActiveBitStatus +* Description : Checks whether the specified IRQ Channel active bit is set +* or not. +* Input : - NVIC_IRQChannel: specifies the interrupt active bit to check. +* Output : None +* Return : The new state of IRQ Channel active bit(SET or RESET). +*******************************************************************************/ +ITStatus NVIC_GetIRQChannelActiveBitStatus(u8 NVIC_IRQChannel) +{ + ITStatus activeirqstatus = RESET; + u32 tmp = 0x00; + + /* Check the parameters */ + assert_param(IS_NVIC_IRQ_CHANNEL(NVIC_IRQChannel)); + + tmp = ((u32)0x01 << (NVIC_IRQChannel & (u32)0x1F)); + + if (((NVIC->IABR[(NVIC_IRQChannel >> 0x05)]) & tmp) == tmp ) + { + activeirqstatus = SET; + } + else + { + activeirqstatus = RESET; + } + return activeirqstatus; +} + +/******************************************************************************* +* Function Name : NVIC_GetCPUID +* Description : Returns the ID number, the version number and the implementation +* details of the Cortex-M3 core. +* Input : None +* Output : None +* Return : CPU ID. +*******************************************************************************/ +u32 NVIC_GetCPUID(void) +{ + return (SCB->CPUID); +} + +/******************************************************************************* +* Function Name : NVIC_SetVectorTable +* Description : Sets the vector table location and Offset. +* Input : - NVIC_VectTab: specifies if the vector table is in RAM or +* FLASH memory. +* This parameter can be one of the following values: +* - NVIC_VectTab_RAM +* - NVIC_VectTab_FLASH +* - Offset: Vector Table base offset field. +* This value must be a multiple of 0x100. +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_SetVectorTable(u32 NVIC_VectTab, u32 Offset) +{ + /* Check the parameters */ + assert_param(IS_NVIC_VECTTAB(NVIC_VectTab)); + assert_param(IS_NVIC_OFFSET(Offset)); + + SCB->VTOR = NVIC_VectTab | (Offset & (u32)0x1FFFFF80); +} + +/******************************************************************************* +* Function Name : NVIC_GenerateSystemReset +* Description : Generates a system reset. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_GenerateSystemReset(void) +{ + SCB->AIRCR = AIRCR_VECTKEY_MASK | (u32)0x04; +} + +/******************************************************************************* +* Function Name : NVIC_GenerateCoreReset +* Description : Generates a Core (Core + NVIC) reset. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_GenerateCoreReset(void) +{ + SCB->AIRCR = AIRCR_VECTKEY_MASK | (u32)0x01; +} + +/******************************************************************************* +* Function Name : NVIC_SystemLPConfig +* Description : Selects the condition for the system to enter low power mode. +* Input : - LowPowerMode: Specifies the new mode for the system to enter +* low power mode. +* This parameter can be one of the following values: +* - NVIC_LP_SEVONPEND +* - NVIC_LP_SLEEPDEEP +* - NVIC_LP_SLEEPONEXIT +* - NewState: new state of LP condition. +* This parameter can be: ENABLE or DISABLE. +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_SystemLPConfig(u8 LowPowerMode, FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_NVIC_LP(LowPowerMode)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + SCB->SCR |= LowPowerMode; + } + else + { + SCB->SCR &= (u32)(~(u32)LowPowerMode); + } +} + +/******************************************************************************* +* Function Name : NVIC_SystemHandlerConfig +* Description : Enables or disables the specified System Handlers. +* Input : - SystemHandler: specifies the system handler to be enabled +* or disabled. +* This parameter can be one of the following values: +* - SystemHandler_MemoryManage +* - SystemHandler_BusFault +* - SystemHandler_UsageFault +* - NewState: new state of specified System Handlers. +* This parameter can be: ENABLE or DISABLE. +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_SystemHandlerConfig(u32 SystemHandler, FunctionalState NewState) +{ + u32 tmpreg = 0x00; + + /* Check the parameters */ + assert_param(IS_CONFIG_SYSTEM_HANDLER(SystemHandler)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + tmpreg = (u32)0x01 << (SystemHandler & (u32)0x1F); + + if (NewState != DISABLE) + { + SCB->SHCSR |= tmpreg; + } + else + { + SCB->SHCSR &= ~tmpreg; + } +} + +/******************************************************************************* +* Function Name : NVIC_SystemHandlerPriorityConfig +* Description : Configures the specified System Handlers priority. +* Input : - SystemHandler: specifies the system handler to be +* enabled or disabled. +* This parameter can be one of the following values: +* - SystemHandler_MemoryManage +* - SystemHandler_BusFault +* - SystemHandler_UsageFault +* - SystemHandler_SVCall +* - SystemHandler_DebugMonitor +* - SystemHandler_PSV +* - SystemHandler_SysTick +* - SystemHandlerPreemptionPriority: new priority group of the +* specified system handlers. +* - SystemHandlerSubPriority: new sub priority of the specified +* system handlers. +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_SystemHandlerPriorityConfig(u32 SystemHandler, u8 SystemHandlerPreemptionPriority, + u8 SystemHandlerSubPriority) +{ + u32 tmp1 = 0x00, tmp2 = 0xFF, handlermask = 0x00; + u32 tmppriority = 0x00; + + /* Check the parameters */ + assert_param(IS_PRIORITY_SYSTEM_HANDLER(SystemHandler)); + assert_param(IS_NVIC_PREEMPTION_PRIORITY(SystemHandlerPreemptionPriority)); + assert_param(IS_NVIC_SUB_PRIORITY(SystemHandlerSubPriority)); + + tmppriority = (0x700 - (SCB->AIRCR & (u32)0x700))>> 0x08; + tmp1 = (0x4 - tmppriority); + tmp2 = tmp2 >> tmppriority; + + tmppriority = (u32)SystemHandlerPreemptionPriority << tmp1; + tmppriority |= SystemHandlerSubPriority & tmp2; + + tmppriority = tmppriority << 0x04; + tmp1 = SystemHandler & (u32)0xC0; + tmp1 = tmp1 >> 0x06; + tmp2 = (SystemHandler >> 0x08) & (u32)0x03; + tmppriority = tmppriority << (tmp2 * 0x08); + handlermask = (u32)0xFF << (tmp2 * 0x08); + + SCB->SHPR[tmp1] &= ~handlermask; + SCB->SHPR[tmp1] |= tmppriority; +} + +/******************************************************************************* +* Function Name : NVIC_GetSystemHandlerPendingBitStatus +* Description : Checks whether the specified System handlers pending bit is +* set or not. +* Input : - SystemHandler: specifies the system handler pending bit to +* check. +* This parameter can be one of the following values: +* - SystemHandler_MemoryManage +* - SystemHandler_BusFault +* - SystemHandler_SVCall +* Output : None +* Return : The new state of System Handler pending bit(SET or RESET). +*******************************************************************************/ +ITStatus NVIC_GetSystemHandlerPendingBitStatus(u32 SystemHandler) +{ + ITStatus bitstatus = RESET; + u32 tmp = 0x00, tmppos = 0x00; + + /* Check the parameters */ + assert_param(IS_GET_PENDING_SYSTEM_HANDLER(SystemHandler)); + + tmppos = (SystemHandler >> 0x0A); + tmppos &= (u32)0x0F; + + tmppos = (u32)0x01 << tmppos; + + tmp = SCB->SHCSR & tmppos; + + if (tmp == tmppos) + { + bitstatus = SET; + } + else + { + bitstatus = RESET; + } + return bitstatus; +} + +/******************************************************************************* +* Function Name : NVIC_SetSystemHandlerPendingBit +* Description : Sets System Handler pending bit. +* Input : - SystemHandler: specifies the system handler pending bit +* to be set. +* This parameter can be one of the following values: +* - SystemHandler_NMI +* - SystemHandler_PSV +* - SystemHandler_SysTick +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_SetSystemHandlerPendingBit(u32 SystemHandler) +{ + u32 tmp = 0x00; + + /* Check the parameters */ + assert_param(IS_SET_PENDING_SYSTEM_HANDLER(SystemHandler)); + + /* Get the System Handler pending bit position */ + tmp = SystemHandler & (u32)0x1F; + /* Set the corresponding System Handler pending bit */ + SCB->ICSR |= ((u32)0x01 << tmp); +} + +/******************************************************************************* +* Function Name : NVIC_ClearSystemHandlerPendingBit +* Description : Clears System Handler pending bit. +* Input : - SystemHandler: specifies the system handler pending bit to +* be clear. +* This parameter can be one of the following values: +* - SystemHandler_PSV +* - SystemHandler_SysTick +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_ClearSystemHandlerPendingBit(u32 SystemHandler) +{ + u32 tmp = 0x00; + + /* Check the parameters */ + assert_param(IS_CLEAR_SYSTEM_HANDLER(SystemHandler)); + + /* Get the System Handler pending bit position */ + tmp = SystemHandler & (u32)0x1F; + /* Clear the corresponding System Handler pending bit */ + SCB->ICSR |= ((u32)0x01 << (tmp - 0x01)); +} + +/******************************************************************************* +* Function Name : NVIC_GetSystemHandlerActiveBitStatus +* Description : Checks whether the specified System handlers active bit is +* set or not. +* Input : - SystemHandler: specifies the system handler active bit to +* check. +* This parameter can be one of the following values: +* - SystemHandler_MemoryManage +* - SystemHandler_BusFault +* - SystemHandler_UsageFault +* - SystemHandler_SVCall +* - SystemHandler_DebugMonitor +* - SystemHandler_PSV +* - SystemHandler_SysTick +* Output : None +* Return : The new state of System Handler active bit(SET or RESET). +*******************************************************************************/ +ITStatus NVIC_GetSystemHandlerActiveBitStatus(u32 SystemHandler) +{ + ITStatus bitstatus = RESET; + + u32 tmp = 0x00, tmppos = 0x00; + + /* Check the parameters */ + assert_param(IS_GET_ACTIVE_SYSTEM_HANDLER(SystemHandler)); + + tmppos = (SystemHandler >> 0x0E) & (u32)0x0F; + + tmppos = (u32)0x01 << tmppos; + + tmp = SCB->SHCSR & tmppos; + + if (tmp == tmppos) + { + bitstatus = SET; + } + else + { + bitstatus = RESET; + } + return bitstatus; +} + +/******************************************************************************* +* Function Name : NVIC_GetFaultHandlerSources +* Description : Returns the system fault handlers sources. +* Input : - SystemHandler: specifies the system handler to get its fault +* sources. +* This parameter can be one of the following values: +* - SystemHandler_HardFault +* - SystemHandler_MemoryManage +* - SystemHandler_BusFault +* - SystemHandler_UsageFault +* - SystemHandler_DebugMonitor +* Output : None +* Return : Source of the fault handler. +*******************************************************************************/ +u32 NVIC_GetFaultHandlerSources(u32 SystemHandler) +{ + u32 faultsources = 0x00; + u32 tmpreg = 0x00, tmppos = 0x00; + + /* Check the parameters */ + assert_param(IS_FAULT_SOURCE_SYSTEM_HANDLER(SystemHandler)); + + tmpreg = (SystemHandler >> 0x12) & (u32)0x03; + tmppos = (SystemHandler >> 0x14) & (u32)0x03; + + if (tmpreg == 0x00) + { + faultsources = SCB->HFSR; + } + else if (tmpreg == 0x01) + { + faultsources = SCB->CFSR >> (tmppos * 0x08); + if (tmppos != 0x02) + { + faultsources &= (u32)0x0F; + } + else + { + faultsources &= (u32)0xFF; + } + } + else + { + faultsources = SCB->DFSR; + } + return faultsources; +} + +/******************************************************************************* +* Function Name : NVIC_GetFaultAddress +* Description : Returns the address of the location that generated a fault +* handler. +* Input : - SystemHandler: specifies the system handler to get its +* fault address. +* This parameter can be one of the following values: +* - SystemHandler_MemoryManage +* - SystemHandler_BusFault +* Output : None +* Return : Fault address. +*******************************************************************************/ +u32 NVIC_GetFaultAddress(u32 SystemHandler) +{ + u32 faultaddress = 0x00; + u32 tmp = 0x00; + + /* Check the parameters */ + assert_param(IS_FAULT_ADDRESS_SYSTEM_HANDLER(SystemHandler)); + + tmp = (SystemHandler >> 0x16) & (u32)0x01; + + if (tmp == 0x00) + { + faultaddress = SCB->MMFAR; + } + else + { + faultaddress = SCB->BFAR; + } + return faultaddress; +} + +/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3