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crt0.c
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crt0.c
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/*-----------------------------------------------------------------------------*/
/* imported symbols */
/*-----------------------------------------------------------------------------*/
extern unsigned long _etext;
extern unsigned long _sidata; /* start address for the initialization values of the .data section */
extern unsigned long _sdata; /* start address for the .data section. defined in linker script */
extern unsigned long _edata; /* end address for the .data section. defined in linker script */
extern unsigned long _sbss; /* start address for the .bss section. defined in linker script */
extern unsigned long _ebss; /* end address for the .bss section. defined in linker script */
extern unsigned long _estack; /* init value for the stack pointer. defined in linker script */
extern int main(void);
/* Hardware initialization */
extern void SystemInit(void);
/* FreeRTOS handlers */
extern void xPortPendSVHandler(void);
extern void xPortSysTickHandler(void);
extern void vPortSVCHandler(void);
/*-----------------------------------------------------------------------------*/
/* function prototypes */
/*-----------------------------------------------------------------------------*/
#define __weak __attribute__((weak))
void Reset_Handler(void) __attribute__((__interrupt__));
void __default_exception_handler(void) __weak;
#define __default_handler __attribute__((weak, alias("__default_exception_handler")))
void NMIException(void) __default_handler;
void HardFaultException(void) __default_handler;
void MemManageException(void) __default_handler;
void BusFaultException(void) __default_handler;
void UsageFaultException(void) __default_handler;
void DebugMonitor(void) __default_handler;
void SVCHandler(void) __default_handler;
void PendSVC(void) __default_handler;
void SysTickHandler(void) __default_handler;
void WWDG_IRQHandler(void) __default_handler;
void PVD_IRQHandler(void) __default_handler;
void TAMPER_IRQHandler(void) __default_handler;
void RTC_IRQHandler(void) __default_handler;
void FLASH_IRQHandler(void) __default_handler;
void RCC_IRQHandler(void) __default_handler;
void EXTI0_IRQHandler(void) __default_handler;
void EXTI1_IRQHandler(void) __default_handler;
void EXTI2_IRQHandler(void) __default_handler;
void EXTI3_IRQHandler(void) __default_handler;
void EXTI4_IRQHandler(void) __default_handler;
void DMAChannel1_IRQHandler(void) __default_handler;
void DMAChannel2_IRQHandler(void) __default_handler;
void DMAChannel3_IRQHandler(void) __default_handler;
void DMAChannel4_IRQHandler(void) __default_handler;
void DMAChannel5_IRQHandler(void) __default_handler;
void DMAChannel6_IRQHandler(void) __default_handler;
void DMAChannel7_IRQHandler(void) __default_handler;
void ADC_IRQHandler(void) __default_handler;
void USB_HP_CAN_TX_IRQHandler(void) __default_handler;
void USB_LP_CAN_RX0_IRQHandler(void) __default_handler;
void CAN_RX1_IRQHandler(void) __default_handler;
void CAN_SCE_IRQHandler(void) __default_handler;
void EXTI9_5_IRQHandler(void) __default_handler;
void TIM1_BRK_IRQHandler(void) __default_handler;
void TIM1_UP_IRQHandler(void) __default_handler;
void TIM1_TRG_COM_IRQHandler(void) __default_handler;
void TIM1_CC_IRQHandler(void) __default_handler;
void TIM2_IRQHandler(void) __default_handler;
void TIM3_IRQHandler(void) __default_handler;
void TIM4_IRQHandler(void) __default_handler;
void I2C1_EV_IRQHandler(void) __default_handler;
void I2C1_ER_IRQHandler(void) __default_handler;
void I2C2_EV_IRQHandler(void) __default_handler;
void I2C2_ER_IRQHandler(void) __default_handler;
void SPI1_IRQHandler(void) __default_handler;
void SPI2_IRQHandler(void) __default_handler;
void USART1_IRQHandler(void) __default_handler;
void USART2_IRQHandler(void) __default_handler;
void USART3_IRQHandler(void) __default_handler;
void EXTI15_10_IRQHandler(void) __default_handler;
void RTCAlarm_IRQHandler(void) __default_handler;
void USBWakeUp_IRQHandler(void) __default_handler;
/*-----------------------------------------------------------------------------*/
/* Exception vectors */
/*-----------------------------------------------------------------------------*/
typedef void (*isr_vector_t) (void);
static const isr_vector_t g_pfnVectors[] __attribute__((section(".isr_vector"), used)) = {
(isr_vector_t)&_estack, /* The initial stack pointer */
Reset_Handler, /* The reset handler */
NMIException,
HardFaultException,
MemManageException,
BusFaultException,
UsageFaultException,
(void*)0, (void*)0, (void*)0, (void*)0, /* Reserved */
vPortSVCHandler,
DebugMonitor,
(void*)0, /* Reserved */
xPortPendSVHandler,
xPortSysTickHandler,
WWDG_IRQHandler,
PVD_IRQHandler,
TAMPER_IRQHandler,
RTC_IRQHandler,
FLASH_IRQHandler,
RCC_IRQHandler,
EXTI0_IRQHandler,
EXTI1_IRQHandler,
EXTI2_IRQHandler,
EXTI3_IRQHandler,
EXTI4_IRQHandler,
DMAChannel1_IRQHandler,
DMAChannel2_IRQHandler,
DMAChannel3_IRQHandler,
DMAChannel4_IRQHandler,
DMAChannel5_IRQHandler,
DMAChannel6_IRQHandler,
DMAChannel7_IRQHandler,
ADC_IRQHandler,
USB_HP_CAN_TX_IRQHandler,
USB_LP_CAN_RX0_IRQHandler,
CAN_RX1_IRQHandler,
CAN_SCE_IRQHandler,
EXTI9_5_IRQHandler,
TIM1_BRK_IRQHandler,
TIM1_UP_IRQHandler,
TIM1_TRG_COM_IRQHandler,
TIM1_CC_IRQHandler,
TIM2_IRQHandler,
TIM3_IRQHandler,
TIM4_IRQHandler,
I2C1_EV_IRQHandler,
I2C1_ER_IRQHandler,
I2C2_EV_IRQHandler,
I2C2_ER_IRQHandler,
SPI1_IRQHandler,
SPI2_IRQHandler,
USART1_IRQHandler,
USART2_IRQHandler,
USART3_IRQHandler,
EXTI15_10_IRQHandler,
RTCAlarm_IRQHandler,
USBWakeUp_IRQHandler,
(void*)0,
(void*)0,
(void*)0,
(void*)0,
(void*)0,
(void*)0,
(void*)0,
(void*)0xF108F85F /* this is a workaround for boot in RAM mode. */
};
void __default_exception_handler(void) {
while(1);
}
void Reset_Handler(void) {
unsigned long *pulSrc, *pulDest;
/* Copy the data segment initializers from flash to SRAM. */
pulSrc = &_sidata;
for(pulDest = &_sdata; pulDest < &_edata;) *(pulDest++) = *(pulSrc++);
/* Zero fill the bss segment. */
for(pulDest = &_sbss; pulDest < &_ebss;) *(pulDest++) = 0;
/* Initialize basic hardware (PLLs, clocks etc) */
SystemInit();
/* Call the application's entry point. */
main();
while(1);
}