STM8实验课例程
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C语言的主函数
*/
#include "stm8s207r.h"
void GPIO_Init(void)
{
/* LED IO Configuration */
/* LD3: PD3 */
/* LD2: PD1 */
/* LD1: PD0 */
PD_DDR |= 0x1D; /* Output. */
PD_CR1 |= 0x1D; /* PushPull. */
PD_CR2 = 0x00; /* Output speed up to 2MHz. */ }
-------- */
void TIM_Init(void)
{
TIM4_PSCR = 0x04;
TIM4_ARR = 0xFA;
TIM4_CR1 |= 0x01;
TIM4_IER |= 0x01;
}
main()
{
_asm("sim"); /* Disable interrupts. */
GPIO_Init();
TIM_Init();
_asm("rim"); /* Enable interrupts. */
while (1);
}
C语言下的中断
/* BASIC INTERRUPT VECTOR TABLE FOR STM8 devices
* Copyright (c) 2007 STMicroelectronics
*/
#include "stm8s207r.h"
unsigned int Count;
typedef void @far (*interrupt_handler_t)(void);
struct interrupt_vector {
unsigned char interrupt_instruction;
interrupt_handler_t interrupt_handler;
};
@far @interrupt void TIM4_UPD_OVF_IRQHandler (void)
{
Count++;
switch (Count)
{
case 4000: PD_ODR |=0x01;
break;
case 8000: PD_ODR |=0x04;
break;
case 12000: PD_ODR |=0x08;
break;
case 16000: PD_ODR &=~0x1D;
Count=0;
break;
}
/* Clear the update IT pending Bit */
TIM4_SR1 &=~(0x01);
return;
}
@far @interrupt void NonHandledInterrupt (void)
{
/* in order to detect unexpected events during development, it is recommended to set a breakpoint on the following instruction */
return;
}
extern void _stext(); /* startup routine */
struct interrupt_vector const _vectab[] = {
{0x82, (interrupt_handler_t)_stext}, /* reset */
{0x82, NonHandledInterrupt}, /* trap */
{0x82, TLI_Interrupt}, /* irq0 */
{0x82, NonHandledInterrupt}, /* irq1 */
{0x82, NonHandledInterrupt}, /* irq2 */
{0x82, NonHandledInterrupt}, /* irq3 */
{0x82, NonHandledInterrupt}, /* irq4 */
{0x82, NonHandledInterrupt}, /* irq5 */
{0x82, NonHandledInterrupt}, /* irq6 */
{0x82, NonHandledInterrupt}, /* irq7 */
{0x82, NonHandledInterrupt}, /* irq8 */
{0x82, NonHandledInterrupt}, /* irq9 */
{0x82, NonHandledInterrupt}, /* irq10 */
{0x82, NonHandledInterrupt}, /* irq11 */
{0x82, NonHandledInterrupt}, /* irq12 */
{0x82, TIM2_UPD_OVF_IRQHandler}, /* irq13 */ {0x82, NonHandledInterrupt}, /* irq14 */
{0x82, NonHandledInterrupt}, /* irq15 */
{0x82, NonHandledInterrupt}, /* irq16 */
{0x82, NonHandledInterrupt}, /* irq17 */
{0x82, NonHandledInterrupt}, /* irq18 */
{0x82, NonHandledInterrupt}, /* irq19 */
{0x82, NonHandledInterrupt}, /* irq20 */
{0x82, NonHandledInterrupt}, /* irq21 */
{0x82, NonHandledInterrupt}, /* irq22 */
{0x82, TIM4_UPD_OVF_IRQHandler}, /* irq23 */ {0x82, NonHandledInterrupt}, /* irq24 */
{0x82, NonHandledInterrupt}, /* irq25 */
{0x82, NonHandledInterrupt}, /* irq26 */
{0x82, NonHandledInterrupt}, /* irq27 */
{0x82, NonHandledInterrupt}, /* irq28 */
{0x82, NonHandledInterrupt}, /* irq29 */
};