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startup.txeie.c
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/* startup.txeie.c -- entry point at reset and C startup
** Copyright (c) 2020-2021 Renaud Fivet
** v6: device specific interrupts mapped
** v5: System Exceptions mapped
** v4: calls to init() and main()
** v3: data and bss RAM memory initialization
** v2: SysTick System Exception mapped
** v1: stack and entry point
*/
#include "system.h" /* init() */
/* Memory locations defined by linker script */
void __StackTop( void) ; /* __StackTop points after end of stack */
void Reset_Handler( void) ; /* Entry point for execution */
extern const long __etext[] ; /* start of initialized data copy in flash */
extern long __data_start__[] ;
extern long __bss_start__[] ;
extern long __bss_end__ ; /* &__bss_end__ points after end of bss */
/* Stubs for System Exception Handler */
void Default_Handler( void) ;
#define dflt_hndlr( fun) void fun##_Handler( void) \
__attribute__((weak,alias("Default_Handler")))
dflt_hndlr( NMI) ;
dflt_hndlr( HardFault) ;
dflt_hndlr( SVCall) ;
dflt_hndlr( PendSV) ;
dflt_hndlr( SysTick) ;
dflt_hndlr( WWDG) ;
dflt_hndlr( RTC) ;
dflt_hndlr( FLASH) ;
dflt_hndlr( RCC) ;
dflt_hndlr( EXTI0_1) ;
dflt_hndlr( EXTI2_3) ;
dflt_hndlr( EXTI4_15) ;
dflt_hndlr( DMA_CH1) ;
dflt_hndlr( DMA_CH2_3) ;
dflt_hndlr( DMA_CH4_5) ;
dflt_hndlr( ADC) ;
dflt_hndlr( TIM1_BRK_UP_TRG_COM) ;
dflt_hndlr( TIM1_CC) ;
dflt_hndlr( TIM3) ;
dflt_hndlr( TIM6) ;
dflt_hndlr( TIM14) ;
dflt_hndlr( TIM15) ;
dflt_hndlr( TIM16) ;
dflt_hndlr( TIM17) ;
dflt_hndlr( I2C1) ;
dflt_hndlr( I2C2) ;
dflt_hndlr( SPI1) ;
dflt_hndlr( SPI2) ;
dflt_hndlr( USART1) ;
dflt_hndlr( USART2) ;
dflt_hndlr( USART3_4_5_6) ;
dflt_hndlr( USB) ;
/* Interrupt vector table:
* 1 Stack Pointer reset value
* 15 System Exceptions
* 32 Device specific Interrupts
*/
typedef void (*isr_p)( void) ;
isr_p const isr_vector[ 16 + 32] __attribute__((section(".isr_vector"))) = {
__StackTop,
/* System Exceptions */
Reset_Handler,
NMI_Handler,
HardFault_Handler,
0, 0, 0, 0, 0, 0, 0,
SVCall_Handler,
0, 0,
PendSV_Handler,
SysTick_Handler,
/* STM32F030xx specific Interrupts cf RM0360 */
WWDG_Handler,
0,
RTC_Handler,
FLASH_Handler,
RCC_Handler,
EXTI0_1_Handler,
EXTI2_3_Handler,
EXTI4_15_Handler,
0,
DMA_CH1_Handler,
DMA_CH2_3_Handler,
DMA_CH4_5_Handler,
ADC_Handler,
TIM1_BRK_UP_TRG_COM_Handler,
TIM1_CC_Handler,
0,
TIM3_Handler,
TIM6_Handler,
0,
TIM14_Handler,
TIM15_Handler,
TIM16_Handler,
TIM17_Handler,
I2C1_Handler,
I2C2_Handler,
SPI1_Handler,
SPI2_Handler,
USART1_Handler,
USART2_Handler,
USART3_4_5_6_Handler,
0,
USB_Handler
} ;
int main( void) ;
void Reset_Handler( void) {
const long *f ; /* from, source constant data from FLASH */
long *t ; /* to, destination in RAM */
/* Assume:
** __bss_start__ == __data_end__
** All sections are 4 bytes aligned
*/
f = __etext ;
for( t = __data_start__ ; t < __bss_start__ ; t += 1)
*t = *f++ ;
while( t < &__bss_end__)
*t++ = 0 ;
if( init() == 0)
main() ;
for( ;;)
__asm( "WFI") ; /* Wait for interrupt */
}
void Default_Handler( void) {
for( ;;) ;
}
/* end of startup.txeie.c */