360 lines
15 KiB
C++
360 lines
15 KiB
C++
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#include "CH32V20xxx.h"
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typedef __SIZE_TYPE__ size_t;
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extern "C" {
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extern void handle_reset () __attribute__((naked,nothrow,used));
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extern void user_prog () __attribute__((used));
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extern int main () __attribute__((used));
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extern void SystemInit() __attribute__((used));
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// This is required to allow pure virtual functions to be defined.
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extern void __cxa_pure_virtual() { while (1); }
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// These magic symbols are provided by the linker.
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extern uint32_t _sbss;
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extern uint32_t _ebss;
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extern uint32_t _data_lma;
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extern uint32_t _data_vma;
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extern uint32_t _edata;
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extern void (*__preinit_array_start[]) (void) __attribute__((weak));
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extern void (*__preinit_array_end[]) (void) __attribute__((weak));
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extern void (*__init_array_start[]) (void) __attribute__((weak));
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extern void (*__init_array_end[]) (void) __attribute__((weak));
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static void __init_array () {
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uint32_t * dst, * end;
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/* Zero fill the bss section */
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dst = &_sbss;
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end = &_ebss;
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while (dst < end) * dst++ = 0U;
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/* Copy data section from flash to RAM */
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uint32_t * src;
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src = &_data_lma;
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dst = &_data_vma;
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end = &_edata;
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if (src != dst) {
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while (dst < end) * dst++ = * src++;
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}
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size_t count;
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/* Pro Cortex-Mx bylo toto zbytečné, lze předpokládat, že je to tak i zde.
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count = __preinit_array_end - __preinit_array_start;
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for (unsigned i = 0; i < count; i++) __preinit_array_start[i]();
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*/
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count = __init_array_end - __init_array_start;
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for (unsigned i = 0; i < count; i++) __init_array_start[i]();
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}
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// If you don't override a specific handler, it will just spin forever.
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void DefaultIRQHandler( void ) {
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// Infinite Loop
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for (;;);
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}
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void NMI_RCC_CSS_IRQHandler( void ) {
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RCC.INTR.B.CSSC = RESET; // clear the clock security int flag
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}
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#define ALIAS(f) __attribute__((nothrow,weak,alias(#f),used))
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void Ecall_M_Mode_Handler( void ) ALIAS(DefaultIRQHandler);
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void Ecall_U_Mode_Handler( void ) ALIAS(DefaultIRQHandler);
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void Break_Point_Handler( void ) ALIAS(DefaultIRQHandler);
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void NMI_Handler( void ) ALIAS(NMI_RCC_CSS_IRQHandler);
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void HardFault_Handler( void ) ALIAS(DefaultIRQHandler);
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void SysTick_Handler( void ) ALIAS(DefaultIRQHandler);
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void SW_Handler( void ) ALIAS(DefaultIRQHandler);
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void WWDG_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void PVD_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TAMPER_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void RTC_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void FLASH_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void RCC_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void EXTI0_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void EXTI1_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void EXTI2_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void EXTI3_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void EXTI4_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void DMA1_Channel1_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void DMA1_Channel2_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void DMA1_Channel3_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void DMA1_Channel4_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void DMA1_Channel5_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void DMA1_Channel6_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void DMA1_Channel7_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void DMA1_Channel8_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void ADC1_2_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void USB_HP_CAN1_TX_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void USB_LP_CAN1_RX0_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void CAN1_RX1_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void CAN1_SCE_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void EXTI9_5_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM1_BRK_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM1_UP_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM1_TRG_COM_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM1_CC_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM2_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM3_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM4_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void I2C1_EV_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void I2C1_ER_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void I2C2_EV_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void I2C2_ER_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void SPI1_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void SPI2_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void USART1_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void USART2_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void USART3_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void EXTI15_10_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void RTCAlarm_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void USBWakeUp_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM8_BRK_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM8_UP__IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM8_TRG_COM_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM8_CC_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM5_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void SPI3_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void UART4_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void UART5_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void ETH_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void ETH_WKUP_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void OTG_FS_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void USBHDWakeUp_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void USBHD_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void UART6_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void UART7_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void UART8_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM9_BRK_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM9_UP__IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM9_TRG_COM_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM9_CC_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM10_BRK_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM10_UP__IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM10_TRG_COM_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void TIM10_CC_IRQHandler (void) ALIAS(DefaultIRQHandler);
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void ETHWakeUp_IRQHandler( void ) ALIAS(DefaultIRQHandler);
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void OSC32KCal_IRQHandler( void ) ALIAS(DefaultIRQHandler);
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void OSCWakeUp_IRQHandler( void ) ALIAS(DefaultIRQHandler);
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void Init() __attribute__((used,section(".init")));
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/* Tohle je patrně nedomyšlené, sekce .vector není definována.
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void InterruptVector() __attribute__((nothrow,naked,section(".vector"),weak,alias("InterruptVectorDefault")));
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void InterruptVectorDefault() __attribute__((nothrow,naked,section(".vector")));
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*/
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typedef void (*pHandler) (void);
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extern const pHandler InterruptVector [] __attribute__((section(".text.vector"),aligned(8)));
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};
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const pHandler InterruptVector [] = {
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Init,
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0,
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NMI_Handler, /* NMI */
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HardFault_Handler, /* Hard Fault */
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0,
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Ecall_M_Mode_Handler, /* Ecall M Mode */
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0,0,
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Ecall_U_Mode_Handler, /* Ecall U Mode */
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Break_Point_Handler, /* Break Point */
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0,0,
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SysTick_Handler, /* SysTick Handler */
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0,
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SW_Handler, /* SW Handler */
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0,
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/* External Interrupts */
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WWDG_IRQHandler, /* Window Watchdog */
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PVD_IRQHandler, /* PVD through EXTI Line detect */
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TAMPER_IRQHandler, /* TAMPER */
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RTC_IRQHandler, /* RTC */
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FLASH_IRQHandler, /* Flash */
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RCC_IRQHandler, /* RCC */
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EXTI0_IRQHandler, /* EXTI Line 0 */
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EXTI1_IRQHandler, /* EXTI Line 1 */
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EXTI2_IRQHandler, /* EXTI Line 2 */
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EXTI3_IRQHandler, /* EXTI Line 3 */
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EXTI4_IRQHandler, /* EXTI Line 4 */
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DMA1_Channel1_IRQHandler, /* DMA1 Channel 1 */
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DMA1_Channel2_IRQHandler, /* DMA1 Channel 2 */
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DMA1_Channel3_IRQHandler, /* DMA1 Channel 3 */
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DMA1_Channel4_IRQHandler, /* DMA1 Channel 4 */
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DMA1_Channel5_IRQHandler, /* DMA1 Channel 5 */
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DMA1_Channel6_IRQHandler, /* DMA1 Channel 6 */
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DMA1_Channel7_IRQHandler, /* DMA1 Channel 7 */
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ADC1_2_IRQHandler, /* ADC1_2 */
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USB_HP_CAN1_TX_IRQHandler, /* USB HP and CAN1 TX */
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USB_LP_CAN1_RX0_IRQHandler, /* USB LP and CAN1RX0 */
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CAN1_RX1_IRQHandler, /* CAN1 RX1 */
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CAN1_SCE_IRQHandler, /* CAN1 SCE */
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EXTI9_5_IRQHandler, /* EXTI Line 9..5 */
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TIM1_BRK_IRQHandler, /* TIM1 Break */
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TIM1_UP_IRQHandler, /* TIM1 Update */
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TIM1_TRG_COM_IRQHandler, /* TIM1 Trigger and Commutation */
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TIM1_CC_IRQHandler, /* TIM1 Capture Compare */
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TIM2_IRQHandler, /* TIM2 */
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TIM3_IRQHandler, /* TIM3 */
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TIM4_IRQHandler, /* TIM4 */
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I2C1_EV_IRQHandler, /* I2C1 Event */
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I2C1_ER_IRQHandler, /* I2C1 Error */
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I2C2_EV_IRQHandler, /* I2C2 Event */
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I2C2_ER_IRQHandler, /* I2C2 Error */
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SPI1_IRQHandler, /* SPI1 */
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SPI2_IRQHandler, /* SPI2 */
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USART1_IRQHandler, /* USART1 */
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USART2_IRQHandler, /* USART2 */
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USART3_IRQHandler, /* USART3 */
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EXTI15_10_IRQHandler, /* EXTI Line 15..10 */
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RTCAlarm_IRQHandler, /* RTC Alarm through EXTI Line */
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USBWakeUp_IRQHandler, /* USB Wake up from suspend */
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USBHD_IRQHandler, /* USBHD Break */
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USBHDWakeUp_IRQHandler, /* USBHD Wake up from suspend */
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ETH_IRQHandler, /* ETH global */
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ETHWakeUp_IRQHandler, /* ETH Wake up */
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0, /* BLE BB */
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0, /* BLE LLE */
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TIM5_IRQHandler, /* TIM5 */
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UART4_IRQHandler, /* UART4 */
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DMA1_Channel8_IRQHandler, /* DMA1 Channel8 */
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OSC32KCal_IRQHandler, /* OSC32KCal */
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OSCWakeUp_IRQHandler, /* OSC Wake Up */
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};
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#if 0
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void InterruptVectorDefault() noexcept {
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asm volatile( R"---(
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.align 1
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.option norvc;
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.word Init
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.word 0
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.word NMI_Handler /* NMI */
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.word HardFault_Handler /* Hard Fault */
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.word 0
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.word Ecall_M_Mode_Handler /* Ecall M Mode */
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.word 0
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.word 0
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.word Ecall_U_Mode_Handler /* Ecall U Mode */
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.word Break_Point_Handler /* Break Point */
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.word 0
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.word 0
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.word SysTick_Handler /* SysTick Handler */
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.word 0
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.word SW_Handler /* SW Handler */
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.word 0
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/* External Interrupts */
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.word WWDG_IRQHandler /* Window Watchdog */
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.word PVD_IRQHandler /* PVD through EXTI Line detect */
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.word TAMPER_IRQHandler /* TAMPER */
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.word RTC_IRQHandler /* RTC */
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.word FLASH_IRQHandler /* Flash */
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.word RCC_IRQHandler /* RCC */
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.word EXTI0_IRQHandler /* EXTI Line 0 */
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.word EXTI1_IRQHandler /* EXTI Line 1 */
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.word EXTI2_IRQHandler /* EXTI Line 2 */
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.word EXTI3_IRQHandler /* EXTI Line 3 */
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.word EXTI4_IRQHandler /* EXTI Line 4 */
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.word DMA1_Channel1_IRQHandler /* DMA1 Channel 1 */
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.word DMA1_Channel2_IRQHandler /* DMA1 Channel 2 */
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.word DMA1_Channel3_IRQHandler /* DMA1 Channel 3 */
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.word DMA1_Channel4_IRQHandler /* DMA1 Channel 4 */
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.word DMA1_Channel5_IRQHandler /* DMA1 Channel 5 */
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.word DMA1_Channel6_IRQHandler /* DMA1 Channel 6 */
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.word DMA1_Channel7_IRQHandler /* DMA1 Channel 7 */
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.word ADC1_2_IRQHandler /* ADC1_2 */
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.word USB_HP_CAN1_TX_IRQHandler /* USB HP and CAN1 TX */
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.word USB_LP_CAN1_RX0_IRQHandler /* USB LP and CAN1RX0 */
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.word CAN1_RX1_IRQHandler /* CAN1 RX1 */
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.word CAN1_SCE_IRQHandler /* CAN1 SCE */
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.word EXTI9_5_IRQHandler /* EXTI Line 9..5 */
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.word TIM1_BRK_IRQHandler /* TIM1 Break */
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.word TIM1_UP_IRQHandler /* TIM1 Update */
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.word TIM1_TRG_COM_IRQHandler /* TIM1 Trigger and Commutation */
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.word TIM1_CC_IRQHandler /* TIM1 Capture Compare */
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.word TIM2_IRQHandler /* TIM2 */
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.word TIM3_IRQHandler /* TIM3 */
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.word TIM4_IRQHandler /* TIM4 */
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.word I2C1_EV_IRQHandler /* I2C1 Event */
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.word I2C1_ER_IRQHandler /* I2C1 Error */
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.word I2C2_EV_IRQHandler /* I2C2 Event */
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.word I2C2_ER_IRQHandler /* I2C2 Error */
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.word SPI1_IRQHandler /* SPI1 */
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.word SPI2_IRQHandler /* SPI2 */
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.word USART1_IRQHandler /* USART1 */
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.word USART2_IRQHandler /* USART2 */
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.word USART3_IRQHandler /* USART3 */
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.word EXTI15_10_IRQHandler /* EXTI Line 15..10 */
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.word RTCAlarm_IRQHandler /* RTC Alarm through EXTI Line */
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.word USBWakeUp_IRQHandler /* USB Wake up from suspend */
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.word USBHD_IRQHandler /* USBHD Break */
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.word USBHDWakeUp_IRQHandler /* USBHD Wake up from suspend */
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.word ETH_IRQHandler /* ETH global */
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.word ETHWakeUp_IRQHandler /* ETH Wake up */
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.word 0 /* BLE BB */
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.word 0 /* BLE LLE */
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.word TIM5_IRQHandler /* TIM5 */
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.word UART4_IRQHandler /* UART4 */
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.word DMA1_Channel8_IRQHandler /* DMA1 Channel8 */
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.word OSC32KCal_IRQHandler /* OSC32KCal */
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.word OSCWakeUp_IRQHandler /* OSC Wake Up */
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)---");
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}
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#endif
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void Init() {
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asm volatile( R"---(
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.align 1
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_start:
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j handle_reset
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.rept 12
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.word 0x00000013
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.endr
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.word 0x00100073
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||
|
|
)---");
|
||
|
|
}
|
||
|
|
void handle_reset() noexcept {
|
||
|
|
asm volatile(R"---(
|
||
|
|
.option push
|
||
|
|
.option norelax
|
||
|
|
la gp, __global_pointer$
|
||
|
|
.option pop
|
||
|
|
la sp, _eusrstack
|
||
|
|
)---"
|
||
|
|
#if __GNUC__ > 10
|
||
|
|
".option arch, +zicsr\n"
|
||
|
|
#endif
|
||
|
|
// Setup the interrupt vector, processor status and INTSYSCR.
|
||
|
|
R"---(
|
||
|
|
li t0, 0x1f
|
||
|
|
csrw 0xbc0, t0
|
||
|
|
|
||
|
|
/* Enabled nested and hardware stack */
|
||
|
|
li t0, 0x88
|
||
|
|
csrs mstatus, t0
|
||
|
|
|
||
|
|
la t0, InterruptVector
|
||
|
|
ori t0, t0, 3
|
||
|
|
csrw mtvec, t0
|
||
|
|
|
||
|
|
/* Takhle RISC-V přejde do uživatelského programu. */
|
||
|
|
csrw mepc, %[user]
|
||
|
|
mret
|
||
|
|
)---"
|
||
|
|
: : [user]"r"(user_prog)/*, "InterruptVector" (InterruptVector)*/
|
||
|
|
: "t0", "memory" );
|
||
|
|
}
|
||
|
|
void user_prog () {
|
||
|
|
SystemInit ();
|
||
|
|
__init_array();
|
||
|
|
main();
|
||
|
|
for (;;);
|
||
|
|
}
|