285 lines
7.2 KiB
C
285 lines
7.2 KiB
C
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#include <stdint.h>
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#include <stm32f10x_map.h>
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extern int main(void);
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typedef void (*ISR_func)(void);
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#define SECTION(x) __attribute__ ((section(#x)))
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#define ISR_VECTOR_SECTION SECTION(.isr_vector)
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static void sys_reset(void) __attribute__((naked));
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void NMI_handler(void) __attribute__((interrupt));
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void HardFault_handler(void) __attribute__((interrupt));
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void MemManage_handler(void) __attribute__((interrupt));
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void BusFault_handler(void) __attribute__((interrupt));
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void UsageFault_handler(void) __attribute__((interrupt));
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static void unhandled_int(void) __attribute__((interrupt));
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#define UNHANDLED_ALIAS __attribute__((weak, alias("unhandled_int")));
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void Main_Stack_End(void);
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void HardFault_handler(void)__attribute__((weak, alias("dHardFault_handler")));
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void MemManage_handler(void)__attribute__((weak, alias("dMemManage_handler")));
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void BusFault_handler(void) __attribute__((weak, alias("dBusFault_handler")));
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void UsageFault_handler(void)__attribute__((weak, alias("dUsageFault_handler")));
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void Reserved_handler(void) UNHANDLED_ALIAS;
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void SVCall_handler(void) UNHANDLED_ALIAS;
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void DebugMonitor_handler(void) UNHANDLED_ALIAS;
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void PendSV_handler(void) UNHANDLED_ALIAS;
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void SysTick_handler(void) UNHANDLED_ALIAS;
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void WWDG_handler(void) UNHANDLED_ALIAS;
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void PVD_handler(void) UNHANDLED_ALIAS;
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void TAMPER_handler(void) UNHANDLED_ALIAS;
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void RTC_handler(void) UNHANDLED_ALIAS;
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void FLASH_handler(void) UNHANDLED_ALIAS;
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void RCC_handler(void) UNHANDLED_ALIAS;
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void EXTI0_handler(void) UNHANDLED_ALIAS;
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void EXTI1_handler(void) UNHANDLED_ALIAS;
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void EXTI2_handler(void) UNHANDLED_ALIAS;
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void EXTI3_handler(void) UNHANDLED_ALIAS;
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void EXTI4_handler(void) UNHANDLED_ALIAS;
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void DMA1_Channel1_handler(void) UNHANDLED_ALIAS;
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void DMA1_Channel2_handler(void) UNHANDLED_ALIAS;
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void DMA1_Channel3_handler(void) UNHANDLED_ALIAS;
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void DMA1_Channel4_handler(void) UNHANDLED_ALIAS;
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void DMA1_Channel5_handler(void) UNHANDLED_ALIAS;
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void DMA1_Channel6_handler(void) UNHANDLED_ALIAS;
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void DMA1_Channel7_handler(void) UNHANDLED_ALIAS;
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void ADC1_2_handler(void) UNHANDLED_ALIAS;
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void USB_HP_CAN_TX_handler(void) UNHANDLED_ALIAS;
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void USB_LP_CAN_RX0_handler(void) UNHANDLED_ALIAS;
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void CAN_RX1_handler(void) UNHANDLED_ALIAS;
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void CAN_SCE_handler(void) UNHANDLED_ALIAS;
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void EXTI9_5_handler(void) UNHANDLED_ALIAS;
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void TIM1_BRK_handler(void) UNHANDLED_ALIAS;
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void TIM1_UP_handler(void) UNHANDLED_ALIAS;
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void TIM1_TRG_COM_handler(void) UNHANDLED_ALIAS;
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void TIM1_CC_handler(void) UNHANDLED_ALIAS;
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void TIM2_handler(void) UNHANDLED_ALIAS;
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void TIM3_handler(void) UNHANDLED_ALIAS;
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void TIM4_handler(void) UNHANDLED_ALIAS;
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void I2C1_EV_handler(void) UNHANDLED_ALIAS;
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void I2C1_ER_handler(void) UNHANDLED_ALIAS;
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void I2C2_EV_handler(void) UNHANDLED_ALIAS;
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void I2C2_ER_handler(void) UNHANDLED_ALIAS;
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void SPI1_handler(void) UNHANDLED_ALIAS;
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void SPI2_handler(void) UNHANDLED_ALIAS;
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void USART1_handler(void) UNHANDLED_ALIAS;
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void USART2_handler(void) UNHANDLED_ALIAS;
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void USART3_handler(void) UNHANDLED_ALIAS;
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void EXTI15_10_handler(void) UNHANDLED_ALIAS;
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void RTCAlarm_handler(void) UNHANDLED_ALIAS;
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void USBWakeup_handler(void) UNHANDLED_ALIAS;
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void TIM8_BRK_handler(void) UNHANDLED_ALIAS;
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void TIM8_UP_handler(void) UNHANDLED_ALIAS;
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void TIM8_TRG_COM_handler(void) UNHANDLED_ALIAS;
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void TIM8_CC_handler(void) UNHANDLED_ALIAS;
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void ADC3_handler(void) UNHANDLED_ALIAS;
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void FSMC_handler(void) UNHANDLED_ALIAS;
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void SDIO_handler(void) UNHANDLED_ALIAS;
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void TIM5_handler(void) UNHANDLED_ALIAS;
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void SPI3_handler(void) UNHANDLED_ALIAS;
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void UART4_handler(void) UNHANDLED_ALIAS;
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void UART5_handler(void) UNHANDLED_ALIAS;
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void TIM6_handler(void) UNHANDLED_ALIAS;
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void TIM7_handler(void) UNHANDLED_ALIAS;
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void DMA2_Channel1_handler(void) UNHANDLED_ALIAS;
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void DMA2_Channel2_handler(void) UNHANDLED_ALIAS;
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void DMA2_Channel3_handler(void) UNHANDLED_ALIAS;
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void DMA2_Channel4_5_handler(void) UNHANDLED_ALIAS;
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const ISR_func isr_vector[76] ISR_VECTOR_SECTION =
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{
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Main_Stack_End,
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sys_reset,
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NMI_handler,
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HardFault_handler,
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MemManage_handler,
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BusFault_handler,
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UsageFault_handler,
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Reserved_handler,
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Reserved_handler,
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Reserved_handler,
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Reserved_handler,
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SVCall_handler,
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DebugMonitor_handler,
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Reserved_handler,
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PendSV_handler,
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SysTick_handler,
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WWDG_handler,
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PVD_handler,
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TAMPER_handler,
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RTC_handler,
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FLASH_handler,
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RCC_handler,
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EXTI0_handler,
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EXTI1_handler,
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EXTI2_handler,
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EXTI3_handler,
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EXTI4_handler,
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DMA1_Channel1_handler,
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DMA1_Channel2_handler,
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DMA1_Channel3_handler,
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DMA1_Channel4_handler,
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DMA1_Channel5_handler,
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DMA1_Channel6_handler,
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DMA1_Channel7_handler,
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ADC1_2_handler,
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USB_HP_CAN_TX_handler,
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USB_LP_CAN_RX0_handler,
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CAN_RX1_handler,
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CAN_SCE_handler,
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EXTI9_5_handler,
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TIM1_BRK_handler,
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TIM1_UP_handler,
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TIM1_TRG_COM_handler,
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TIM1_CC_handler,
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TIM2_handler,
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TIM3_handler,
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TIM4_handler,
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I2C1_EV_handler,
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I2C1_ER_handler,
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I2C2_EV_handler,
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I2C2_ER_handler,
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SPI1_handler,
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SPI2_handler,
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USART1_handler,
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USART2_handler,
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USART3_handler,
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EXTI15_10_handler,
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RTCAlarm_handler,
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USBWakeup_handler,
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TIM8_BRK_handler,
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TIM8_UP_handler,
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TIM8_TRG_COM_handler,
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TIM8_CC_handler,
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ADC3_handler,
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FSMC_handler,
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SDIO_handler,
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TIM5_handler,
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SPI3_handler,
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UART4_handler,
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UART5_handler,
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TIM6_handler,
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TIM7_handler,
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DMA2_Channel1_handler,
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DMA2_Channel2_handler,
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DMA2_Channel3_handler,
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DMA2_Channel4_5_handler
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};
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extern uint8_t _data[];
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extern uint8_t _etext[];
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extern uint8_t _edata[];
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static void
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copy_initialized(void)
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{
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uint8_t *ram = _data;
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uint8_t *rom = _etext;
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while(ram < _edata) {
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*ram++ = *rom++;
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}
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}
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extern uint8_t __bss_start[];
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extern uint8_t __bss_end[];
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static void
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clear_bss(void)
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{
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uint8_t *m = __bss_start;
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while(m < __bss_end) {
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*m++ = 0;
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}
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}
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static void
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start_hse_clock(void)
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{
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/* Start external oscillator */
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RCC->CR |= RCC_CR_HSEON;
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/* Wait for oscillator to stabilize */
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while(!(RCC->CR & RCC_CR_HSERDY));
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}
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static void
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use_pll()
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{
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RCC->CFGR = (RCC_CFGR_MCO_NOCLOCK
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| RCC_CFGR_PLLMULL6 /* PLL at 48MHz */
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| RCC_CFGR_PLLSRC /* PLL runs on HSE */
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| RCC_CFGR_PPRE2_DIV1 /* APB2 at 48MHz */
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| RCC_CFGR_PPRE1_DIV2 /* APB1 at 24MHz */
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| RCC_CFGR_HPRE_DIV1 /* AHB at 48 MHz */
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| RCC_CFGR_USBPRE /* USB clock at same speed as PLL */
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);
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RCC->CR |= RCC_CR_PLLON;
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/* Wait for PLL */
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while(!(RCC->CR & RCC_CR_PLLRDY));
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/* Switch to PLL as system clock */
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MODIFY_REG(RCC->CFGR, RCC_CFGR_SW,RCC_CFGR_SW_PLL);
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}
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static void
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enable_fault_exceptions(void)
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{
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SCB->SHCSR |= (SCB_SHCSR_MEMFAULTENA | SCB_SHCSR_BUSFAULTENA
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| SCB_SHCSR_USGFAULTENA);
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}
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static void
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sys_reset(void)
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{
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copy_initialized();
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clear_bss();
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enable_fault_exceptions();
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start_hse_clock();
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use_pll();
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main();
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while(1);
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}
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void
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NMI_handler(void)
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{
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while(1);
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}
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static void
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unhandled_int(void)
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{
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while(1);
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}
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static void
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dHardFault_handler(void)
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{
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while(1);
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}
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static void
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dUsageFault_handler(void)
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{
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while(1);
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}
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static void
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dMemManage_handler(void)
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{
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while(1);
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}
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static void
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dBusFault_handler(void)
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{
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while(1);
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}
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