EEliod嵌入式实验5

来源：互联网发布：油耗测试软件编辑：程序博客网时间：2024/06/15 05:17

实验内容：

【选做】实现数码管的计时秒表功能，低2位为毫秒级，高2位为秒级。按键1启动计时，按键2暂停计时，按键3清零。

#include "register_variant.h"#define LED_CS2(*((volatile unsigned short *)(0x10300000)))#define LED_CS3(*((volatile unsigned short *)(0x10400000)))#define KPC(*((volatile unsigned int *)(0x41500000)))#define KPDK_VALUE(*((volatile unsigned short *)(0x41500008)))#define KPAS_VALUE (*((volatile unsigned short *)(0x41500020)))#defineOSCR(*(volatile unsigned long *)(osTimer_OSCR))#defineICPR(*(volatile unsigned long *)(int_ICPR))#defineOSMR0(*(volatile unsigned long *)(0x40a00000))#defineOSMR1(*(volatile unsigned long *)(0x40a00004))#defineOSMR2(*(volatile unsigned long *)(0x40a00008))#defineOSMR3(*(volatile unsigned long *)(0x40a0000c))#define OSSR(*(volatile unsigned long *)(0x40a00014))#define OIER(*(volatile unsigned long *)(0x40a0001c))#define ICMR        (*(volatile unsigned long *)(0x40d00004))int m=0;void IRQ_Function(void){int g,s,b,q,i;int pretimer;int a[10]={0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10};i=m++;g=i%10;i/=10;s=i%10;i/=10;b=i%10;i/=10;q=i%10;if(q==6&&b==0){LED_CS2 = 0x4040;m=0;}else        LED_CS2=(a[b]<<8)+a[q];        LED_CS3=(a[g]<<8)+a[s];OIER = 0x1;//enable timer 0    pretimer = OSCR;    OSMR0 = pretimer + 36864;}void dummyOs(){ int pretimer;LED_CS2 = 0x4040;LED_CS3 = 0x4040;OIER = 0x1;//enable timer 0    pretimer = OSCR;    OSMR0 = pretimer + 36864;    ICMR=0;m=0;    while(1)    { char i;i = KPDK_VALUE;        switch (i)    {    case 0x40: ICMR=0x3c000000;            break;        case 0x02: ICMR=0;            break;        case 0x04: m=0;               ICMR=0;               LED_CS2 = 0x4040;   LED_CS3 = 0x4040;            break;            default : break;        }    }}

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