Key4x1+led+8+3speak.rar_KEY AND led

/******************************************************************** 用按键控制蜂鸣器发音的音调。 K1按下后用2KHz方波驱动蜂鸣器及数码管显示数字,流水灯指示LED值 K2按下后用4KHz方波驱动蜂鸣器及数码管显示数字,流水灯指示LED值 K3按下后用6KHz方波驱动蜂鸣器及数码管显示数字,流水灯指示LED值 K4按下后停止发音及数码管显示数字,流水灯指示LED值 ********************************************************************/ #include "msp430x14x.h" #include "BoardConfig.h" #define keyin (P1IN & 0x0f) #define uchar unsigned char #define uint unsigned int uchar scandata[16]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; void delay(void); uchar temp,keyval=0; void main( void ) { // Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; BoardConfig(0x80); //打开流水灯 数码管 关掉电平转换 P1IES =0x0f; P1IE =0x0f; //打开P1中断及下降沿中断 uchar i; P1DIR =BIT7; P1OUT =0; //KEY端口设置P1.7为输出 P2DIR =0xff; P2OUT =0xff; //流水灯的控制端口设置为输出 P3DIR |=BIT4; P3OUT =BIT4; //按健指示LED,有按照输入时闪亮一下 P4DIR |=0xff; P4OUT |=0x3f; P5DIR |=0xff; P5OUT =0xfe; //数码管显示控制端口及位选控制 P6DIR |=BIT7; // P6OUT =BIT7; BCSCTL1 ^=XT2OFF; do { IFG1 &=~OFIFG; for(i=0xff;i>0;i--); } while((IFG1 & OFIFG)); BCSCTL2 |=SELM_2+SELS; TACTL |=TASSEL_2+MC_1+ID_3; //CCTL0 |= CCIE; _EINT(); while(1) { LPM1; P4OUT =scandata[keyval]; //P3OUT ^=BIT4; // delay(); // P3OUT |=BIT4; } } /********************************************************************* 延时程序 *********************************************************************/ void delay() { uint i,tmp; for(i=7;i>0;i--) { for(tmp=1200;tmp>0;tmp--); } } /********************************************************************** 计数器A中断 **********************************************************************/ #pragma vector=TIMERA0_VECTOR __interrupt void Timer_A(void) { P6OUT ^=BIT7; //中断一次蜂鸣器开关触发一次 } /************************************************************************* PORT1.0-1.3引脚中断,判断哪一个开关产生的中断,同时控掉不同的定时器计数值,产生 不同时间的方波,蜂鸣器发出不同的声音 ************************************************************************/ #pragma vector=PORT1_VECTOR __interrupt void PORT1_ISR(void) { if(P1IFG & 0x0f) { switch(P1IFG) { case 0x01: if(keyin !=0x0f) { _NOP(); if(keyin !=0x0f) { // temp =keyin; while(keyin !=0x0f); LPM1_EXIT; keyval =1; CCR0 =5000; CCTL0 |= CCIE; P2OUT =0xfe; P1IFG =0; break; } } case 0x02: if(keyin !=0x0f) { _NOP(); if(keyin !=0x0f) { // temp =keyin; while(keyin !=0x0f); LPM1_EXIT; keyval =2; CCR0 =2500; CCTL0 |= CCIE; P2OUT =0xfd; P1IFG =0; break; } } case 0x04: if(keyin !=0x0f) { _NOP(); if(keyin !=0x0f) { // temp =keyin; while(keyin !=0x0f); LPM1_EXIT; keyval =3; CCR0 =1250; CCTL0 |= CCIE; P2OUT =0xfb; P1IFG =0; break; } } case 0x08: if(keyin !=0x0f) { _NOP(); if(keyin !=0x0f) { temp =keyin; while(keyin !=0x0f); LPM1_EXIT; keyval =4; CCR0 =650; CCTL0 |= CCIE; P2OUT =0xf7; P1IFG =0; break; } } default: while(keyin !=0x0f); keyval =0; P1IFG =0; break; } } }