51单片机c语言按键波形程序

51单片机c语言按键波形程序51单片机c语言按键波形程序 #include #include #include #define DAC0832 XBYTE[0xf200] #define uchar unsigned char #define uint unsigned int sbit SDA=P1^0; sbit CLK=P1^1; sbit KD_KEY=P1^2; uchar display_bit; uchar key; uchar data display_buffer[4]; uchar code l...

51单片机c语言按键波形程序 #include #include #include #define DAC0832 XBYTE[0xf200] #define uchar unsigned char #define uint unsigned int sbit SDA=P1^0; sbit CLK=P1^1; sbit KD_KEY=P1^2; uchar display_bit; uchar key; uchar data display_buffer[4]; uchar code led[10]={0xc0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90}; uchar code tab[256]= {0x80,0x83,0x86,0x89,0x8d,0x90,0x93,0x96,0x99,0x9c,0x9f,0xa2,0xa5,0xa8,0xab,0xae,0xb1,0xb4,0xb7,0xba,0xbc,0xbf,0xc2,0xc5 ,0xc7,0xca,0xcc,0xcf,0xd1,0xd4,0xd6,0xd8,0xda,0xdd,0xdf,0xe1,0xe3,0xe5,0xe7,0xe9,0xea,0xec,0xee,0xef,0xf1,0xf2,0xf4,0xf5 ,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfd ,0xfd,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf4,0xf2,0xf1,0xef,0xee,0xec,0xea,0xe9,0xe7,0xe5,0xe3,0xe1,0xde,0xdd,0xda ,0xd8,0xd6,0xd4,0xd1,0xcf,0xcc,0xca,0xc7,0xc5,0xc2,0xbf,0xbc,0xba,0xb7,0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,0x99 ,0x96,0x93,0x90,0x8d,0x89,0x86,0x83,0x80,0x80,0x7c,0x79,0x76,0x72,0x6f,0x6c,0x69,0x66,0x63,0x60,0x5d,0x5a,0x57,0x55,0x51 ,0x4e,0x4c,0x48,0x45,0x43,0x40,0x3d,0x3a,0x38,0x35,0x33,0x30,0x2e,0x2b,0x29,0x27,0x25,0x22,0x20,0x1e ,0x1c,0x1a,0x18,0x16 ,0x15,0x13,0x11,0x10,0x0e,0x0d,0x0b,0x0a,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x02,0x01,0x00,0x00,0x00,0x00,0x00,0x00 ,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02 ,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0d,0x0e,0x10,0x11,0x13,0x15 ,0x16,0x18,0x1a,0x1c,0x1e,0x20,0x22,0x25,0x27,0x29,0x2b,0x2e,0x30,0x33,0x35,0x38,0x3a,0x3d,0x40,0x43,0x45,0x48,0x4c,0x4e ,0x51,0x55,0x57,0x5a,0x5d,0x60,0x63,0x66 ,0x69,0x6c,0x6f,0x72,0x76,0x79,0x7c,0x80 }; void delay(int n) { uint k,j; for(k=0;k0;i--) { DAC0832=i; } } void tran(void) //三角波 { uint i; for(i=0;i<255;i++) DAC0832=i; for(i=255;i>0;i--) DAC0832=i; } void square(void) //方波 { DAC0832=0x00; delay(20); DAC0832=0xff; delay(20); } void sin(void) //正弦波 { uint i; for(i=0;i<256;i++) DAC0832=tab[i]; i=0; } void main(void) { while(1) { key=key_s(); if(key==1) { while(1) { uchar i; for(i=0;i<5;i++) saw(); if(key!=0xff) display_buffer[0]=key; display_s(display_buffer); key=key_s(); if(key==5) break; } } if(key==2) { while(1) { uchar i; for(i=0;i<5;i++) tran(); if(key!=0xff) display_buffer[0]=key; display_s(display_buffer); key= key_s(); if(key==5) break; } } if(key==3) { while(1) { uchar i; for(i=0;i<3;i++) square(); if(key!=0xff) display_buffer[0]=key; display_s(display_buffer); key=key_s(); if(key==5) break; } } if(key==4) { while(1) { uchar i; for(i=0;i<8;i++) sin(); if(key!=0xff) display_buffer[0]=key; display_s(display_buffer); key=key_s(); if(key==5) break; } } } }

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51单片机c语言按键波形程序

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