timer_interrt_v2.zip

#include "s3c24xx.h" #include "key_int.h" #include "uart.h" typedef void(*irq_func) (unsigned int); irq_func irq_array[32]; void register_irq(int irq, irq_func fp){ irq_array[irq] = fp; INTMSK &= ~(1<<irq); } void irq_solve(unsigned int val){ unsigned int bit = EINTPEND; if(val == 0){ //外部中断0 if(GPFDAT & (1<<0)){ //松开 GPFDAT |= 1<<4; } else { GPFDAT &= ~(1<<4); } } if(val == 2){ //外部中断2 if(GPFDAT & (1<<2)){ //松开 GPFDAT |= 1<<5; } else GPFDAT &= ~(1<<5); } if(val == 5){ //外部中断11 或19 if(bit & 1<<11){ //中断11 if(GPGDAT & (1<<3)){ //松开 GPFDAT |= 1<<6; } else GPFDAT &= ~(1<<6); } else{ if(GPGDAT & (1<<11)){ //松开 GPFDAT |= 1<<4; GPFDAT |= 1<<5; GPFDAT |= 1<<6; } else{ GPFDAT &= ~(1<<4); GPFDAT &= ~(1<<5); GPFDAT &= ~(1<<6); } } } EINTPEND = bit; } void key_int_init(void){ GPFCON &= ~((3<<0) | (3<<4)); GPFCON |= ((2<<0) | (2<<4)); GPGCON &= ~((3<<6) | (3<<22)); GPGCON |= ((2<<6) | (2<<22)); EXTINT0 |= ((7<<0) | (7<<8)); //双边缘触发 EXTINT1 |= (7<<12); EXTINT2 |= (7<<12); EINTMASK &= ~((1<<11) | (1<<19)); register_irq(0,irq_solve); register_irq(2,irq_solve); register_irq(5,irq_solve); } void irq_handle_c(void){ unsigned int val = INTOFFSET; irq_array[val](val); SRCPND = 1<<val; INTPND = 1<<val; }