stm32_startup.c

#include <stdint.h>

#define SRAM_START	0x20000000U
#define SRAM_SIZE	(20U * 1024U) // 20KB
#define SRAM_END	((SRAM_START) + (SRAM_SIZE))

#define STACK_START	SRAM_END

/* Linker Symbol definitions */
extern uint32_t _stext;
extern uint32_t _etext;
extern uint32_t _sdata;
extern uint32_t _edata;
extern uint32_t _sbss;
extern uint32_t _ebss;

void main(void);

void Reset_Handler(void);

void NMI_Handler                    (void) __attribute__ ((weak, alias("Default_Handler")));
void HardFault_Handler              (void) __attribute__ ((weak, alias("Default_Handler")));
void MemManage_Handler              (void) __attribute__ ((weak, alias("Default_Handler")));
void BusFault_Handler               (void) __attribute__ ((weak, alias("Default_Handler")));
void UsageFault_Handler             (void) __attribute__ ((weak, alias("Default_Handler")));
void SVC_Handler                    (void) __attribute__ ((weak, alias("Default_Handler")));
void DebugMon_Handler               (void) __attribute__ ((weak, alias("Default_Handler")));
void PendSV_Handler                 (void) __attribute__ ((weak, alias("Default_Handler")));
void SysTick_Handler                (void) __attribute__ ((weak, alias("Default_Handler")));
void WWDG_IRQHandler                (void) __attribute__ ((weak, alias("Default_Handler")));
void PVD_IRQHandler                 (void) __attribute__ ((weak, alias("Default_Handler")));
void TAMPER_IRQHandler              (void) __attribute__ ((weak, alias("Default_Handler")));
void RTC_IRQHandler                 (void) __attribute__ ((weak, alias("Default_Handler")));
void FLASH_IRQHandler               (void) __attribute__ ((weak, alias("Default_Handler")));
void RCC_IRQHandler                 (void) __attribute__ ((weak, alias("Default_Handler")));
void EXTI0_IRQHandler               (void) __attribute__ ((weak, alias("Default_Handler")));
void EXTI1_IRQHandler               (void) __attribute__ ((weak, alias("Default_Handler")));
void EXTI2_IRQHandler               (void) __attribute__ ((weak, alias("Default_Handler")));
void EXTI3_IRQHandler               (void) __attribute__ ((weak, alias("Default_Handler")));
void EXTI4_IRQHandler               (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA1_Channel1_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA1_Channel2_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA1_Channel3_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA1_Channel4_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA1_Channel5_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA1_Channel6_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA1_Channel7_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void ADC1_2_IRQHandler              (void) __attribute__ ((weak, alias("Default_Handler")));
void USB_HP_CAN1_TX_IRQHandler      (void) __attribute__ ((weak, alias("Default_Handler")));
void USB_LP_CAN1_RX0_IRQHandler     (void) __attribute__ ((weak, alias("Default_Handler")));
void CAN1_RX1_IRQHandler            (void) __attribute__ ((weak, alias("Default_Handler")));
void CAN1_SCE_IRQHandler            (void) __attribute__ ((weak, alias("Default_Handler")));
void EXTI9_5_IRQHandler             (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM1_BRK_IRQHandler            (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM1_UP_IRQHandler             (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM1_TRG_COM_IRQHandler        (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM1_CC_IRQHandler             (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM2_IRQHandler                (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM3_IRQHandler                (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM4_IRQHandler                (void) __attribute__ ((weak, alias("Default_Handler")));
void I2C1_EV_IRQHandler             (void) __attribute__ ((weak, alias("Default_Handler")));
void I2C1_ER_IRQHandler             (void) __attribute__ ((weak, alias("Default_Handler")));
void I2C2_EV_IRQHandler             (void) __attribute__ ((weak, alias("Default_Handler")));
void I2C2_ER_IRQHandler             (void) __attribute__ ((weak, alias("Default_Handler")));
void SPI1_IRQHandler                (void) __attribute__ ((weak, alias("Default_Handler")));
void SPI2_IRQHandler                (void) __attribute__ ((weak, alias("Default_Handler")));
void USART1_IRQHandler              (void) __attribute__ ((weak, alias("Default_Handler")));
void USART2_IRQHandler              (void) __attribute__ ((weak, alias("Default_Handler")));
void USART3_IRQHandler              (void) __attribute__ ((weak, alias("Default_Handler")));
void EXTI15_10_IRQHandler           (void) __attribute__ ((weak, alias("Default_Handler")));
void RTC_Alarm_IRQHandler           (void) __attribute__ ((weak, alias("Default_Handler")));
void USBWakeUp_IRQHandler           (void) __attribute__ ((weak, alias("Default_Handler")));
void BootRAM                        (void) __attribute__ ((weak, alias("Default_Handler")));

uint32_t vectors[] __attribute__((section(".isr_vector")))   = {
	STACK_START,
    (uint32_t)Reset_Handler,
    (uint32_t)NMI_Handler,
    (uint32_t)HardFault_Handler,
    (uint32_t)MemManage_Handler,
    (uint32_t)BusFault_Handler,
    (uint32_t)UsageFault_Handler,
    (uint32_t)0,
    (uint32_t)0,
    (uint32_t)0,
    (uint32_t)0,
    (uint32_t)SVC_Handler,
    (uint32_t)DebugMon_Handler,
    (uint32_t)0,
    (uint32_t)PendSV_Handler,
    (uint32_t)SysTick_Handler,
    (uint32_t)WWDG_IRQHandler,
    (uint32_t)PVD_IRQHandler,
    (uint32_t)TAMPER_IRQHandler,
    (uint32_t)RTC_IRQHandler,
    (uint32_t)FLASH_IRQHandler,
    (uint32_t)RCC_IRQHandler,
    (uint32_t)EXTI0_IRQHandler,
    (uint32_t)EXTI1_IRQHandler,
    (uint32_t)EXTI2_IRQHandler,
    (uint32_t)EXTI3_IRQHandler,
    (uint32_t)EXTI4_IRQHandler,
    (uint32_t)DMA1_Channel1_IRQHandler,
    (uint32_t)DMA1_Channel2_IRQHandler,
    (uint32_t)DMA1_Channel3_IRQHandler,
    (uint32_t)DMA1_Channel4_IRQHandler,
    (uint32_t)DMA1_Channel5_IRQHandler,
    (uint32_t)DMA1_Channel6_IRQHandler,
    (uint32_t)DMA1_Channel7_IRQHandler,
    (uint32_t)ADC1_2_IRQHandler,
    (uint32_t)USB_HP_CAN1_TX_IRQHandler,
    (uint32_t)USB_LP_CAN1_RX0_IRQHandler,
    (uint32_t)CAN1_RX1_IRQHandler,
    (uint32_t)CAN1_SCE_IRQHandler,
    (uint32_t)EXTI9_5_IRQHandler,
    (uint32_t)TIM1_BRK_IRQHandler,
    (uint32_t)TIM1_UP_IRQHandler,
    (uint32_t)TIM1_TRG_COM_IRQHandler,
    (uint32_t)TIM1_CC_IRQHandler,
    (uint32_t)TIM2_IRQHandler,
    (uint32_t)TIM3_IRQHandler,
    (uint32_t)TIM4_IRQHandler,
    (uint32_t)I2C1_EV_IRQHandler,
    (uint32_t)I2C1_ER_IRQHandler,
    (uint32_t)I2C2_EV_IRQHandler,
    (uint32_t)I2C2_ER_IRQHandler,
    (uint32_t)SPI1_IRQHandler,
    (uint32_t)SPI2_IRQHandler,
    (uint32_t)USART1_IRQHandler,
    (uint32_t)USART2_IRQHandler,
    (uint32_t)USART3_IRQHandler,
    (uint32_t)EXTI15_10_IRQHandler,
    (uint32_t)RTC_Alarm_IRQHandler,
    (uint32_t)USBWakeUp_IRQHandler,
    (uint32_t)0,
    (uint32_t)0,
    (uint32_t)0,
    (uint32_t)0,
    (uint32_t)0,
    (uint32_t)0,
    (uint32_t)0,
    (uint32_t)BootRAM
};

void Default_Handler(void)
{
	while(1);
}

void Reset_Handler(void)
{
    //
    // Copy .data section to SRAM
    //
    uint32_t size = (uint32_t) &_edata - (uint32_t) &_sdata;
    uint8_t *pSrc = (uint8_t*) &_etext; /* Flash */
    uint8_t *pDst = (uint8_t*) &_sdata; /* SRAM */
    for(int i = 0 ; i < size ; i++)
    {
        *pDst++ = *pSrc++;
    }

    //
    // Init the .bss section to zero in SRAM
    //
    size = (uint32_t) &_ebss - (uint32_t) &_sbss;
    pDst = (uint8_t*) &_sbss;
    for(int i = 0 ; i < size ; i++)
    {
        *pDst++ = 0;
    }

    //
    // Call init function of std. library
    //

    //
    // Call main()
    //
    main();
}