// startup declarations and function for the STM32F415RGT6
// See: RM0090 12.2, Table 61 Vector table for STM32F405xx/07xx and STM32F415xx/17xx

#include <stdint.h>

#define SRAM_START  0x20000000U
#define SRAM_SIZE   (112U * 1024U) // 112KB
#define SRAM_END    ((SRAM_START) + (SRAM_SIZE))
#define STACK_START SRAM_END

extern uint32_t _etext;
extern uint32_t _sdata;
extern uint32_t _edata;
extern uint32_t _la_data;

extern uint32_t _sbss;
extern uint32_t _ebss;

int main(void);

void Reset_Handler(void);

// Weak function prototypes for the vector table so that they can easily be redefined
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 TAMP_STAMP_IRQHandler         (void) __attribute__ ((weak, alias("Default_Handler")));
void RTC_WKUP_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_Stream0_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA1_Stream1_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA1_Stream2_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA1_Stream3_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA1_Stream4_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA1_Stream5_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA1_Stream6_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void ADC_IRQHandler                (void) __attribute__ ((weak, alias("Default_Handler")));
void CAN1_TX_IRQHandler            (void) __attribute__ ((weak, alias("Default_Handler")));
void 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_TIM9_IRQHandler      (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM1_UP_TIM10_IRQHandler      (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM1_TRG_COM_TIM11_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 OTG_FS_WKUP_IRQHandler        (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM8_BRK_TIM12_IRQHandler     (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM8_UP_TIM13_IRQHandler      (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM8_TRG_COM_TIM14_IRQHandler (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM8_CC_IRQHandler            (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA1_Stream7_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void FSMC_IRQHandler               (void) __attribute__ ((weak, alias("Default_Handler")));
void SDIO_IRQHandler               (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM5_IRQHandler               (void) __attribute__ ((weak, alias("Default_Handler")));
void SPI3_IRQHandler               (void) __attribute__ ((weak, alias("Default_Handler")));
void UART4_IRQHandler              (void) __attribute__ ((weak, alias("Default_Handler")));
void UART5_IRQHandler              (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM6_DAC_IRQHandler           (void) __attribute__ ((weak, alias("Default_Handler")));
void TIM7_IRQHandler               (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA2_Stream0_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA2_Stream1_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA2_Stream2_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA2_Stream3_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA2_Stream4_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void ETH_IRQHandler                (void) __attribute__ ((weak, alias("Default_Handler")));
void ETH_WKUP_IRQHandler           (void) __attribute__ ((weak, alias("Default_Handler")));
void CAN2_TX_IRQHandler            (void) __attribute__ ((weak, alias("Default_Handler")));
void CAN2_RX0_IRQHandler           (void) __attribute__ ((weak, alias("Default_Handler")));
void CAN2_RX1_IRQHandler           (void) __attribute__ ((weak, alias("Default_Handler")));
void CAN2_SCE_IRQHandler           (void) __attribute__ ((weak, alias("Default_Handler")));
void OTG_FS_IRQHandler             (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA2_Stream5_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA2_Stream6_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void DMA2_Stream7_IRQHandler       (void) __attribute__ ((weak, alias("Default_Handler")));
void USART6_IRQHandler             (void) __attribute__ ((weak, alias("Default_Handler")));
void I2C3_EV_IRQHandler            (void) __attribute__ ((weak, alias("Default_Handler")));
void I2C3_ER_IRQHandler            (void) __attribute__ ((weak, alias("Default_Handler")));
void OTG_HS_EP1_OUT_IRQHandler     (void) __attribute__ ((weak, alias("Default_Handler")));
void OTG_HS_EP1_IN_IRQHandler      (void) __attribute__ ((weak, alias("Default_Handler")));
void OTG_HS_WKUP_IRQHandler        (void) __attribute__ ((weak, alias("Default_Handler")));
void OTG_HS_IRQHandler             (void) __attribute__ ((weak, alias("Default_Handler")));
void DCMI_IRQHandler               (void) __attribute__ ((weak, alias("Default_Handler")));
void CRYP_IRQHandler               (void) __attribute__ ((weak, alias("Default_Handler")));
void HASH_RNG_IRQHandler           (void) __attribute__ ((weak, alias("Default_Handler")));
void FPU_IRQHandler                (void) __attribute__ ((weak, alias("Default_Handler")));


// Define the veector table
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,
  0, // reserved
  0, // reserved
  0, // reserved
  0, // reserved
  (uint32_t)SVC_Handler,
  (uint32_t)DebugMon_Handler,
  0, // reserved
  (uint32_t)PendSV_Handler,
  (uint32_t)SysTick_Handler,
  (uint32_t)WWDG_IRQHandler,
  (uint32_t)PVD_IRQHandler,
  (uint32_t)TAMP_STAMP_IRQHandler,
  (uint32_t)RTC_WKUP_IRQHandler,
  0, // Flash global interrupt
  (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_Stream0_IRQHandler,
  (uint32_t)DMA1_Stream1_IRQHandler,
  (uint32_t)DMA1_Stream2_IRQHandler,
  (uint32_t)DMA1_Stream3_IRQHandler,
  (uint32_t)DMA1_Stream4_IRQHandler,
  (uint32_t)DMA1_Stream5_IRQHandler,
  (uint32_t)DMA1_Stream6_IRQHandler,
  (uint32_t)ADC_IRQHandler,
  (uint32_t)CAN1_TX_IRQHandler,
  (uint32_t)CAN1_RX0_IRQHandler,
  (uint32_t)CAN1_RX1_IRQHandler,
  (uint32_t)CAN1_SCE_IRQHandler,
  (uint32_t)EXTI9_5_IRQHandler,
  (uint32_t)TIM1_BRK_TIM9_IRQHandler,
  (uint32_t)TIM1_UP_TIM10_IRQHandler,
  (uint32_t)TIM1_TRG_COM_TIM11_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)OTG_FS_WKUP_IRQHandler,
  (uint32_t)TIM8_BRK_TIM12_IRQHandler,
  (uint32_t)TIM8_UP_TIM13_IRQHandler,
  (uint32_t)TIM8_TRG_COM_TIM14_IRQHandler,
  (uint32_t)TIM8_CC_IRQHandler,
  (uint32_t)DMA1_Stream7_IRQHandler,
  (uint32_t)FSMC_IRQHandler,
  (uint32_t)SDIO_IRQHandler,
  (uint32_t)TIM5_IRQHandler,
  (uint32_t)SPI3_IRQHandler,
  (uint32_t)UART4_IRQHandler,
  (uint32_t)UART5_IRQHandler,
  (uint32_t)TIM6_DAC_IRQHandler,
  (uint32_t)TIM7_IRQHandler,
  (uint32_t)DMA2_Stream0_IRQHandler,
  (uint32_t)DMA2_Stream1_IRQHandler,
  (uint32_t)DMA2_Stream2_IRQHandler,
  (uint32_t)DMA2_Stream3_IRQHandler,
  (uint32_t)DMA2_Stream4_IRQHandler,
  (uint32_t)ETH_IRQHandler,
  (uint32_t)ETH_WKUP_IRQHandler,
  (uint32_t)CAN2_TX_IRQHandler,
  (uint32_t)CAN2_RX0_IRQHandler,
  (uint32_t)CAN2_RX1_IRQHandler,
  (uint32_t)CAN2_SCE_IRQHandler,
  (uint32_t)OTG_FS_IRQHandler,
  (uint32_t)DMA2_Stream5_IRQHandler,
  (uint32_t)DMA2_Stream6_IRQHandler,
  (uint32_t)DMA2_Stream7_IRQHandler,
  (uint32_t)USART6_IRQHandler,
  (uint32_t)I2C3_EV_IRQHandler,
  (uint32_t)I2C3_ER_IRQHandler,
  (uint32_t)OTG_HS_EP1_OUT_IRQHandler,
  (uint32_t)OTG_HS_EP1_IN_IRQHandler,
  (uint32_t)OTG_HS_WKUP_IRQHandler,
  (uint32_t)OTG_HS_IRQHandler,
  (uint32_t)DCMI_IRQHandler,
  (uint32_t)CRYP_IRQHandler,
  (uint32_t)HASH_RNG_IRQHandler,
  (uint32_t)FPU_IRQHandler,
};

// Command: a default "do nothing" handler
void Default_Handler(void) {
  while(1);
}

// Command: reset memory and restart user program
void Reset_Handler(void) {
  // copy .data section to SRAM
  uint8_t *pSramData = (uint8_t *)&_sdata; // sram
  uint8_t *pFlashData = (uint8_t *)&_la_data; //flash
  uint32_t data_size = (uint32_t)&_edata - (uint32_t)&_sdata;
  for (uint32_t i = 0 ; i < data_size ; i++) {
    *pSramData++ = *pFlashData++;
  }

  // init. the .bss section to zero in SRAM
  uint32_t bss_size = (uint32_t)&_ebss - (uint32_t)&_sbss;
  uint8_t *pBssData = (uint8_t *)&_sbss;
  for (uint32_t i = 0 ; i < bss_size ; i++) {
    *pBssData++ = 0;
  }

  // now invoke main
  main();
}