VL53l0x的51单片机程序

/***************************** 更新日期2017年2月28日 模拟串口参考stc官方程序 来自arduino实例 使用11.0592MHz内部RC； VL53L0X: SCL-->P3.3 SDA-->P3.2 串口: P3.0 RXD P3.1 TXD *******************************/ #include"stc.h" #include"i2c.h" #include"VL53L0X.h" #include "intrins.h" #define uchar unsigned char #define uint unsigned int /***********全局变量定义**************/ bit flag; uchar val1; short val_s; uchar gbuf[16]; uint acnt ; uint scnt; uint dist ; uchar DeviceRangeStatusInternal; #define BAUD 0xFE80 // 9600bps @ 11.0592MHz //sfr AUXR = 0x8E; sbit RXB = P3^0; //define UART TX/RX port sbit TXB = P3^1; typedef bit BOOL; typedef unsigned char BYTE; typedef unsigned int WORD; BYTE TBUF,RBUF; BYTE TDAT,RDAT; BYTE TCNT,RCNT; BYTE TBIT,RBIT; BOOL TING,RING; BOOL TEND,REND; void UART_INIT(); void delay() { unsigned char i; for(i=0; i<100; i++); } void Delay1ms() //@11.0592MHz { unsigned char i, j; _nop_(); i = 11; j = 190; do { while (--j); } while (--i); } void delay_ms(unsigned int time) { unsigned char i; for(i=1; i<=time; i++) Delay1ms(); } void uartsend_int16(short val) { uchar val1; val1=val/10000; while(!TEND); TEND=0; TBUF='0'+val1; TING=1; val1=val%10000/1000; while(!TEND); TEND=0; TBUF='0'+val1; TING=1; val1=val%1000/100; while(!TEND); TEND=0; TBUF='0'+val1; TING=1; val1=val%100/10; while(!TEND); TEND=0; TBUF='0'+val1; TING=1; val1=val%10/1; while(!TEND); TEND=0; TBUF='0'+val1; TING=1; } void uartprintf(char *s) { int i=0; while(s[i]!='\0') { while(!TEND); TEND=0; TBUF=s[i]; TING=1; i++; } } void uartprintenter() { while(!TEND); TEND=0; TBUF=0x0d; TING=1; while(!TEND); TEND=0; TBUF=0x0a; TING=1; } void main() { uchar val = 0; int cnt = 0; TMOD = 0x00; //timer0 in 16-bit auto reload mode AUXR = 0x80; //timer0 working at 1T mode TL0 = BAUD; TH0 = BAUD>>8; //initial timer0 and set reload value TR0 = 1; //tiemr0 start running ET0 = 1; //enable timer0 interrupt PT0 = 1; //improve timer0 interrupt priority EA = 1; //open global interrupt switch UART_INIT(); uartprintf("start"); while (1) { vl53l0x_send(VL53L0X_REG_SYSRANGE_START, 0x01); while (cnt < 100) { // 1 second waiting time max delay_ms(10); val = vl53l0x_read(VL53L0X_REG_RESULT_RANGE_STATUS); if (val & 0x01) break; cnt++; } if (val & 0x01) uartprintf("ready"); else uartprintf("not ready"); uartprintenter(); //vl53l0x_read_block(0x14, 12); gbuf[0]=vl53l0x_read(0x14); gbuf[7]=vl53l0x_read(0x14+7); gbuf[6]=vl53l0x_read(0x14+6); gbuf[9]=vl53l0x_read(0x14+9); gbuf[8]=vl53l0x_read(0x14+8); gbuf[11]=vl53l0x_read(0x14+11); gbuf[10]=vl53l0x_read(0x14+10); acnt = makeuint16(gbuf[7], gbuf[6]); scnt = makeuint16(gbuf[9], gbuf[8]); dist = makeuint16(gbuf[11], gbuf[10]); DeviceRangeStatusInternal = ((gbuf[0] & 0x78) >> 3); if(DeviceRangeStatusInternal==11&&dist>20&&dist<1200) { uartprintf("distance:"); uartsend_int16(dist); uartprintf("mm"); uartprintenter(); } else { uartprintf("error"); uartprintenter(); } delay_ms(100); } } void tm0() interrupt 1 using 1 { if (RING) { if (--RCNT == 0) { RCNT = 3; //reset send baudrate counter if (--RBIT == 0) { RBUF = RDAT; //save the data to RBUF RING = 0; //stop receive REND = 1; //set receive completed flag } else { RDAT >>= 1; if (RXB) RDAT |= 0x80; //shift RX data to RX buffer } } } else if (!RXB) { RING = 1; //set start receive flag RCNT = 4; //initial receive baudrate counter RBIT = 9; //initial receive bit number (8 data bits + 1 stop bit) } if (--TCNT == 0) { TCNT = 3; //reset send baudrate counter if (TING) //judge whether sending { if (TBIT == 0) { TXB = 0; //send start bit TDAT = TBUF; //load data from TBUF to TDAT TBIT = 9; //initial send bit number (8 data bits + 1 stop bit) } else { TDAT >>= 1; //shift data to CY if (--TBIT == 0) { TXB = 1; TING = 0; //stop send TEND = 1; //set send completed flag } else { TXB = CY; //write CY to TX port } } } } } void UART_INIT() { TING = 0; RING = 0; TEND = 1; REND = 0; TCNT = 0; RCNT = 0; }