abc.rar_ABC

#include <msp430x14x.h> /********************************************* * Check_Key(),检查按键，确认键值 *********************************************/ //int iskeydown = 0; int keyvalue = 1; const char control_key[4]={0x01,0x02,0x04,0x08}; char controlvalue=0x08; void check_Key(void){ P5DIR = 0x07; P5OUT = 0x00; P1OUT = 0x00; for(int I = 0;I <= 0xFF; I ++ ); if (P5IN & 0x78) //有键被按下 { P5OUT &= ~BIT2; //第一行 P5OUT |= BIT1; P5OUT |= BIT0; if(~P5IN & BIT6){keyvalue = 1;} //第一列，显示“1” if(~P5IN & BIT5){keyvalue = 2;}//第二列，显示“2” if(~P5IN & BIT4){keyvalue = 3;}//第三列，显示“3” if(~P5IN & BIT3){keyvalue = 4;}//第四列，显示“4” P5OUT &= ~BIT1; //第二行 P5OUT |= BIT2; P5OUT |= BIT0; if(~P5IN & BIT6){keyvalue = 5;} //第一列，显示“1” if(~P5IN & BIT5){keyvalue = 6;}//第二列，显示“2” if(~P5IN & BIT4){keyvalue = 7;}//第三列，显示“3” if(~P5IN & BIT3){keyvalue = 8;}//第四列，显示“4” P5OUT &= ~BIT0; //第三行 P5OUT |= BIT2; P5OUT |= BIT1; if(~P5IN & BIT6){controlvalue = control_key[0];} //第一列 if(~P5IN & BIT5){controlvalue = control_key[1];}//第二列 if(~P5IN & BIT4){controlvalue = control_key[2];}//第三列 if(~P5IN & BIT3){controlvalue = control_key[3];}//第四列 } } void main(void) { WDTCTL=WDTPW+WDTHOLD; const char tab_seg[8] = { 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8,0x80}; //从0到7循环显示 P4DIR = 0xFF;//p4输出 P6DIR |= 0x03; for(;;){ //for(int j = 0 ; j <= 7; j++) // { P6OUT = 0x00;//使选择控制的74HC373的LE引脚有效 P4OUT=controlvalue;//控制哪个LED亮 P6OUT=0x01;//关闭选择控制的74HC373的LE引脚 P6OUT = 0x02;//使数据显示控制的74HC373的LE引脚有效 check_Key(); P4OUT=tab_seg[keyvalue-1]; P6OUT=0x00;//关闭数据显示控制的74HC373的LE引脚 for(int I = 0 ; I <= 0x0FFF; I ++ ); //} } }