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FreeRTOS-Kernel/Demo/Common/drivers/ST/STM32F10xFWLib/src/stm32f10x_nvic.c
Richard Barry a87f9df3d8 ST CM3 drivers.
2008-05-21 17:56:31 +00:00

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/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name : stm32f10x_nvic.c
* Author : MCD Application Team
* Date First Issued : 09/29/2006
* Description : This file provides all the NVIC firmware functions.
********************************************************************************
* History:
* 04/02/2007: V0.2
* 02/05/2007: V0.1
* 09/29/2006: V0.01
********************************************************************************
* 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 "stm32f10x_nvic.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define AIRC_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->Disable[0] = 0xFFFFFFFF;
NVIC->Disable[1] = 0x000007FF;
NVIC->Clear[0] = 0xFFFFFFFF;
NVIC->Clear[1] = 0x000007FF;
for(index = 0; index < 0x0B; index++)
{
NVIC->Priority[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->IRQControlState = 0x0A000000;
SCB->ExceptionTableOffset = 0x00000000;
SCB->AIRC = AIRC_VECTKEY_MASK;
SCB->SysCtrl = 0x00000000;
SCB->ConfigCtrl = 0x00000000;
for(index = 0; index < 0x03; index++)
{
SCB->SystemPriority[index] = 0;
}
SCB->SysHandlerCtrl = 0x00000000;
SCB->ConfigFaultStatus = 0xFFFFFFFF;
SCB->HardFaultStatus = 0xFFFFFFFF;
SCB->DebugFaultStatus = 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(IS_NVIC_PRIORITY_GROUP(NVIC_PriorityGroup));
/* Set the PRIGROUP[10:8] bits according to NVIC_PriorityGroup value */
SCB->AIRC = AIRC_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(IS_FUNCTIONAL_STATE(NVIC_InitStruct->NVIC_IRQChannelCmd));
assert(IS_NVIC_IRQ_CHANNEL(NVIC_InitStruct->NVIC_IRQChannel));
assert(IS_NVIC_PREEMPTION_PRIORITY(NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority));
assert(IS_NVIC_SUB_PRIORITY(NVIC_InitStruct->NVIC_IRQChannelSubPriority));
if (NVIC_InitStruct->NVIC_IRQChannelCmd != DISABLE)
{
/* Compute the Corresponding IRQ Priority --------------------------------*/
tmppriority = (0x700 - (SCB->AIRC & (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->Priority[(NVIC_InitStruct->NVIC_IRQChannel >> 0x02)];
tmpmask = (u32)0xFF << ((NVIC_InitStruct->NVIC_IRQChannel & (u8)0x03) * 0x08);
tmpreg &= ~tmpmask;
tmppriority &= tmpmask;
tmpreg |= tmppriority;
NVIC->Priority[(NVIC_InitStruct->NVIC_IRQChannel >> 0x02)] = tmpreg;
/* Enable the Selected IRQ Channels --------------------------------------*/
NVIC->Enable[(NVIC_InitStruct->NVIC_IRQChannel >> 0x05)] =
(u32)0x01 << (NVIC_InitStruct->NVIC_IRQChannel & (u8)0x1F);
}
else
{
/* Disable the Selected IRQ Channels -------------------------------------*/
NVIC->Disable[(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.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void NVIC_BASEPRICONFIG(u32 NewPriority)
{
/* Check the parameters */
assert(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->IRQControlState & (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(IS_NVIC_IRQ_CHANNEL(NVIC_IRQChannel));
tmp = ((u32)0x01 << (NVIC_IRQChannel & (u32)0x1F));
if (((NVIC->Set[(NVIC_IRQChannel >> 0x05)]) & tmp) == tmp)
{
pendingirqstatus = SET;
}
else
{
pendingirqstatus = RESET;
}
return pendingirqstatus;
}
/*******************************************************************************
* Function Name : NVIC_SetIRQChannelPendingBit
* Description : Sets the NVIC<49>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(IS_NVIC_IRQ_CHANNEL(NVIC_IRQChannel));
*(u32*)0xE000EF00 = (u32)NVIC_IRQChannel;
}
/*******************************************************************************
* Function Name : NVIC_ClearIRQChannelPendingBit
* Description : Clears the NVIC<49>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(IS_NVIC_IRQ_CHANNEL(NVIC_IRQChannel));
NVIC->Clear[(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->IRQControlState & (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(IS_NVIC_IRQ_CHANNEL(NVIC_IRQChannel));
tmp = ((u32)0x01 << (NVIC_IRQChannel & (u32)0x1F));
if (((NVIC->Active[(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
* code memory.
* This parameter can be one of the following values:
* - NVIC_VectTab_RAM
* - NVIC_VectTab_FLASH
* - Offset: Vector Table base offset field.
* Output : None
* Return : None
*******************************************************************************/
void NVIC_SetVectorTable(u32 NVIC_VectTab, u32 Offset)
{
/* Check the parameters */
assert(IS_NVIC_VECTTAB(NVIC_VectTab));
assert(IS_NVIC_OFFSET(Offset));
SCB->ExceptionTableOffset = (((u32)Offset << 0x07) & (u32)0x1FFFFF80);
SCB->ExceptionTableOffset |= NVIC_VectTab;
}
/*******************************************************************************
* Function Name : NVIC_GenerateSystemReset
* Description : Generates a system reset.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void NVIC_GenerateSystemReset(void)
{
SCB->AIRC = AIRC_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->AIRC = AIRC_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(IS_NVIC_LP(LowPowerMode));
assert(IS_FUNCTIONAL_STATE(NewState));
if (NewState != DISABLE)
{
SCB->SysCtrl |= LowPowerMode;
}
else
{
SCB->SysCtrl &= (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(IS_CONFIG_SYSTEM_HANDLER(SystemHandler));
assert(IS_FUNCTIONAL_STATE(NewState));
tmpreg = (u32)0x01 << (SystemHandler & (u32)0x1F);
if (NewState != DISABLE)
{
SCB->SysHandlerCtrl |= tmpreg;
}
else
{
SCB->SysHandlerCtrl &= ~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(IS_PRIORITY_SYSTEM_HANDLER(SystemHandler));
assert(IS_NVIC_PREEMPTION_PRIORITY(SystemHandlerPreemptionPriority));
assert(IS_NVIC_SUB_PRIORITY(SystemHandlerSubPriority));
tmppriority = (0x700 - (SCB->AIRC & (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->SystemPriority[tmp1] &= ~handlermask;
SCB->SystemPriority[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(IS_GET_PENDING_SYSTEM_HANDLER(SystemHandler));
tmppos = (SystemHandler >> 0x0A);
tmppos &= (u32)0x0F;
tmppos = (u32)0x01 << tmppos;
tmp = SCB->SysHandlerCtrl & 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(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->IRQControlState |= ((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(IS_CLEAR_SYSTEM_HANDLER(SystemHandler));
/* Get the System Handler pending bit position */
tmp = SystemHandler & (u32)0x1F;
/* Clear the corresponding System Handler pending bit */
SCB->IRQControlState |= ((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(IS_GET_ACTIVE_SYSTEM_HANDLER(SystemHandler));
tmppos = (SystemHandler >> 0x0E) & (u32)0x0F;
tmppos = (u32)0x01 << tmppos;
tmp = SCB->SysHandlerCtrl & 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(IS_FAULT_SOURCE_SYSTEM_HANDLER(SystemHandler));
tmpreg = (SystemHandler >> 0x12) & (u32)0x03;
tmppos = (SystemHandler >> 0x14) & (u32)0x03;
if (tmpreg == 0x00)
{
faultsources = SCB->HardFaultStatus;
}
else if (tmpreg == 0x01)
{
faultsources = SCB->ConfigFaultStatus >> (tmppos * 0x08);
if (tmppos != 0x02)
{
faultsources &= (u32)0x0F;
}
else
{
faultsources &= (u32)0xFF;
}
}
else
{
faultsources = SCB->DebugFaultStatus;
}
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(IS_FAULT_ADDRESS_SYSTEM_HANDLER(SystemHandler));
tmp = (SystemHandler >> 0x16) & (u32)0x01;
if (tmp == 0x00)
{
faultaddress = SCB->MemoryManageFaultAddr;
}
else
{
faultaddress = SCB->BusFaultAddr;
}
return faultaddress;
}
/******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/
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