倒车雷达方案

/******************************************************************** 倒车雷达。 UCFG1=0X63，使能RPE,BOE.震荡器选择内部RC震荡器(7.73MHz) *********************************************************************/ /* a 实验板 a--g,DP对应P0.7-P0.0; ----- 数码管共阳极 gfe dcba abcd efg dot |f |b 对应数字： 0(abcdef): 1100 0000 0xC0 0000 0011 0x03 ,XIAN SHI DOT,zui hou yi wei 0; | g | 1(bc): 1111 1001 0xF9 1001 1111 0x9f ------ 2(abdeg): 1100 0100 0xA4 0010 0101 0x25 |e |c 3(abcdg): 1011 0000 0xB0 0000 1101 0x0d | | .. 4(bcfg): 1001 1001 0x99 1001 1001 0x99 ------ .. 5(acdfg): 1001 0010 0x92 0100 1001 0x49 d 6(acdefg): 1000 0010 0x82 0100 0001 0x41 7(abc): 1111 1000 0xF8 0001 1111 0x1f 8(abcdefg): 1000 0000 0x80 0000 0001 0x01 9(abcdfg): 1001 0000 0x90 0000 1001 0x09 数码管动态显示数字，保持时间1-5ms，这里利用了眼睛的视觉特性,在这里取适中3ms。'p' abefg--0011 0001 0x31 */ #include<stdio.h> #include<reg922.h> #include"uart.h" //#include"i2c.h" #include <INTRINS.H> #include<ctype.h> #define RED_LED XTAL1 #define GREEN_LED XTAL2 #define ON 0 #define OFF 1 #define SPK TxD #define nCS XTAL2 #define SCK INT0 #define SIN SCL #define SOUNDHIGH 20 #define SOUNDLOW 100 enum _sound_flag{tingche=1,weixian=10,jingshi=50,anquan=100}sound_flag; void t0_init(); //uint sound_flag; void ChuLi_Disp_Data(); //void Delay(uint); //void Sound_Alarm(); //GAO JIN YING HANG SHU; void ByteTo_M35055(uchar byte_to_m35055);//XIE BYTE SHU JU JIN M35055 void DataTo_M35055(); /*SPI function*/ void Transfer16Bit(int sendData); void DelayNus(int n); uchar databyte[3]; //JIE SHOU SAN ZI JIE; float nearest_juli; // ZUI JIN JU LI; uint unSoundSpace; uint byte_wei=1; //ZI JIE WEI; uchar uchar_disp_wei; uint first_suzi,sec_suzi,thir_suzi; uchar disp_data[10]={0x03,0x9f,0x25,0x0d,0x99,0x49,0x41,0x1f,0x01,0x09}; int to_m35055_no=1; bit show_flag; uchar first_char,sec_char,thir_char,forth_char; uchar first_detector,forth_detector; //M35055 ZI FU DING YI 0(0X20), 1(0X21), 2,3,4,5,6,7,8,9 dot(0x1E) //uchar M35055_char[10]={0x20.0x21}; void main(void) { //start_data_flag=0; uchar_disp_wei=0x00; databyte[2]=0x80; first_suzi=0; sec_suzi=0; thir_suzi=0; unSoundSpace=0; SPK=OFF; /*Port configation*/ P3M1 = 3; //DING YI RED_LED,GREEN_LED; P3M2 = 3; P1M1 = 0X00; //DING SHU MA GUAN SHU CHU; P1M2 = 0X00; //PEI ZHI SCK,DIN WEI KAI LOU SHU CHU P1M1|=0X0C; P1M2|=0X0C; //P1M1 P0M1 = 0xFF; P0M2 = 0xFF; /*P1 value*/ SPK = 1; SCK = 1;//HIGH; //UART clock pin SIN = 1;//HIGH; //UART data pin /*P3 value*/ nCS = 0;//HIGH; RED_LED = 1;//LED_OFF; uart_init(); t0_init(); // nCS=0; //Transfer16Bit(0x00f8); // Transfer16Bit while(1) { //nCS=1; if(show_flag) { // /* show_flag=0; if(to_m35055_no==1) { XTAL2=0; Transfer16Bit(0x00f8); Transfer16Bit(0x3f40); //2 Transfer16Bit(0x00ff); Transfer16Bit(0x00ff); //8 Transfer16Bit(0x00ff); Transfer16Bit(0x00ff); // Transfer16Bit(0x00ff); //Transfer16Bit(0x00ff); //10 //Transfer16Bit(0x00ff); if(nearest_juli<0.3) { Transfer16Bit(0x0143); //12 //xian shi 'stop' Transfer16Bit(0x0144); Transfer16Bit(0x013f); //14 Transfer16Bit(0x0140); Transfer16Bit(0x01ff); } else if(nearest_juli>3.15) { Transfer16Bit(0x01ff); //12 Transfer16Bit(0x01ff); Transfer16Bit(0x01ff); //14 Transfer16Bit(0x01ff); Transfer16Bit(0x01ff); } else { Transfer16Bit(0x0100+0x20+first_suzi); //12 Transfer16Bit(0x011e); Transfer16Bit(0x0100+0x20+sec_suzi); //14 Transfer16Bit(0x0100+0x20+thir_suzi); Transfer16Bit(0x015d); } Transfer16Bit(0x00ff); // Transfer16Bit(0x0100+first_detector); //10 // Transfer16Bit(0x0100+forth_detector); Transfer16Bit(0x00ff); Transfer16Bit(first_char); Transfer16Bit(sec_char); Transfer16Bit(thir_char); Transfer16Bit(forth_char); } while(to_m35055_no>17&&to_m35055_no<243) { Transfer16Bit(0x01ff); //Transfer16Bit(0x0200); // Transfer16Bit(0x0400); //Transfer16Bit(0x0740); } // if(to_m35055_no==243) { Transfer16Bit(0x0480); //F0 //Transfer16Bit(0x00f1); Transfer16Bit(0x1f0f); //244 F1 Transfer16Bit(0x1f20); //F2 Transfer16Bit(0x0001); //246 F3 Transfer16Bit(0x0000); //F4 Transfer16Bit(0x0088); //248 F5 Transfer16Bit(0x201B); //F6 Transfer16Bit(0x0800); //250 //F7 } if(to_m35055_no==251) { Transfer16Bit(0x3F40); to_m35055_no=1; XTAL2=1; } // */ //databyte[2]=0xd2; //ChuLi_Disp_Data(); //Sound_Alarm(); //DataTo_M35055(); } } // while(1){;} } //jie shou UART xin hao ,jiang san zi jie fen bie fang ru shu zu databyt; void rx_interrupt() interrupt 4 { uchar ucTemp; if(RI) //JIE SHOU ZHONG DUAN ; { ucTemp=SBUF; if((ucTemp&0xF0)==0x50) //kai shi jie shou san zi jie shu ju; { byte_wei=0; databyte[byte_wei++]=ucTemp; } else if(byte_wei>0) databyte[byte_wei++]=ucTemp; if(byte_wei==3) //fang zhi cheng xu fa sheng cuo wu; { show_flag=1; byte_wei=0; ChuLi_Disp_Data(); } RI=0; } } // pei zhi t0 ding shi; void t0_init() { EA=0; TMOD|=0X01; //T0 GONG ZUO ZAI MO SHI 1,16 WEI DING SHI QI TMOD&=0XF1; TAMOD&=0XFE; //T0M2=0; TH0=0XFA; //DING SHI YAN SHI 1ms;(2/FOSC)*2*(-T0)=1ms,fosc=7.3728MHz, TL0=0X35; //yi tiao zhi ling XU 2 ge ji qi zhou qi;T0=-1843.2 TF0=0; ET0=1; TR0=1; //kai shi ding shi qi T0; EA=1; } //ding shi xian shi cheng xu void t0_interrupt() interrupt 1 { //TF0=1; // YING JIAN ZI DONG QING LING; //TH0=0XA0; //TL0=0X35; uchar_disp_wei++; switch(uchar_disp_wei) { case 0x1: //if(nearest_juli>=0&&nearest_juli<=3.15) if(nearest_juli>=0&&nearest_juli<=3.15) //ju li da yu huo deng yu 0.3m { // P0=0XFF; P0=nearest_juli<0.3?0xfd:disp_data[first_suzi]&0xFE; //xian shi di yi wei shu zi,ling jia shang dot xian shi } P1&=0X7F; //P1.7 ZHI LING P1|=0X50; break; case 0x2: // if(nearest_juli<0.3) //{ // P0=0X31; //di er wei xian shi 'p' // } // else if(nearest_juli>=0&&nearest_juli<=3.15) { P0=nearest_juli<0.3?0x31:disp_data[sec_suzi]; // xian shi di er wei shu zi } P1&=0XBF; //P1.6 ZI LING P1|=0X90; break; case 0x3: // if(nearest_juli<0.3) // { // P0=0XFD; //di san wei xian shi '-' // } if(nearest_juli>=0&&nearest_juli<=3.15) { P0=nearest_juli<0.3?0xfd:disp_data[thir_suzi]; //xian shi de san wei shu zi } P1&=0XEF; //P1.4 Z