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谁来帮我看看下面这个程序,
很简单的
#include <msp430x14x.h>
unsigned char temp,key=0;
#define keyin (P1IN & 0x0f)
const unsigned char aa[]={ 0x3F,
0x06, //"1"
0x5B, //"2"
0x4F, //"3"
0x66, //"4"
0x6D, //"5"
0x7D, //"6"
0x07, //"7"
0x7F, //"8"
0x6F, //"9"
0x77, //"A"
0x7C, //"B"
0x39, //"C"
0x5E, //"D"
0x79, //"E"
0x71};
void delay(unsigned char z);
int main( void )
{
WDTCTL = WDTPW + WDTHOLD;
P2DIR |= 0xff;
P2OUT = aa[12];
P1DIR = 0xf0;
//OUT = 0x00;
// P1DIR |= 0xf0;
// P1OUT =0x0f;
// temp = P1OUT ;
// temp &= 0x0f;
while(1){
if (keyin != 0x0f){
delay(5);
if (keyin != 0x0f){
temp = keyin;
while(keyin != 0x0f);
switch(temp){
case 0x0e:key=0;
break;
case 0x0d:key=1;
break;
case 0x0b:key=2;
break;
case 0x07:key=3;
break;
default: P2OUT ^= BIT7;
}
P2OUT = aa[key];
}
}
}}
void delay(unsigned char z)
{unsigned int x;
for(x=z;x>0;x--);
} |
阿莫论坛20周年了!感谢大家的支持与爱护!!
知道什么是神吗?其实神本来也是人,只不过神做了人做不到的事情 所以才成了神。 (头文字D, 杜汶泽)
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