STC89C52单片机超声波测距与蓝牙定时器的复用导致的问题吗? -

#include <reg52.h>
#include <1602.h>
#include <intrins.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#define VELOCITY_26C 3485 //26摄氏度时的声速，声速V= 331.5 + 0.607*温度；
#define uchar unsigned char
#define uint unsigned int
sbit INPUT = P1^0; //回声接收端口
sbit OUTPUT = P1^1; //超声触发端口
sbit beep = P2^3 ; // 蜂鸣器
sbit ds = P2^2;
sbit RS = P3^5;
sbit LCDEN = P3^4;
long int distance=0; //距离变量
long int thickness=0;
char pass[3]; // 传递数据位
uchar table[]="thk : ";
uchar table0[]="temp: ";
uchar count;
extern void initLCD();
extern void write_date(uchar date);
extern void write_com(uchar com);
extern void delay(uint x);
//LCD1602
void _nop_(void);
void delayUs()
{
_nop_();
}
void delayMs(uint a)
{
uint i, j;
for(i = a; i > 0; i--)
for(j = 100; j > 0; j--);
}
void writeData(uchar dat)
{
RS = 1;
P0 = dat;
LCDEN = 1;
delayUs();
LCDEN = 0;
delayMs(1);
}
void writeComm(uchar comm)
{
RS = 0;
P0 = comm;
LCDEN = 1;
delayUs();
LCDEN = 0;
delayMs(1);
}
void writeString(uchar * str, uchar length)
{
uchar i;
for(i = 0; i < length; i++)
{
writeData(str[i]);
}
}
//HC-05
void UART_Init()
{
TMOD = 0x20;
TH1 = 0xfd;
TL1 = 0xfd; // 波特率9600
SM0 = 0;
SM1 = 1; // 串口工作方式1 10位异步
REN = 1; // 串口允许接收
TR1 = 1;
EA = 1;
ES = 1; // 启用串口中断
}
// 发送单个字符函数
void UART_SendChar(char ch)
{
SBUF = ch;
while (!TI); // 等待发送完成
TI = 0; // 清除发送中断标志
}
// 发送字符串函数
void UART_SendString(char* str)
{
while (*str != '\0')
{
UART_SendChar(*str);
str++;
}
}
//DS18B20
void dsInit()
{
unsigned int i;
ds = 0;
i = 100;
while(i>0) i--;
ds = 1;
i = 4;
while(i>0) i--;
}
void dsWait()
{
unsigned int i;
while(ds);
while(~ds);
i = 4;
while(i > 0) i--;
}
bit readBit()
{
unsigned int i;
bit b;
ds = 0;
i++;
ds = 1;
i++; i++;
b = ds;
i = 8;
while(i>0) i--;
return b;
}
unsigned char readByte()
{
unsigned int i;
unsigned char j, dat;
dat = 0;
for(i=0; i<8; i++)
{
j = readBit();
dat = (j << 7) | (dat >> 1);
}
return dat;
}
void writeByte(unsigned char dat)
{
unsigned int i;
unsigned char j;
bit b;
for(j = 0; j < 8; j++)
{
b = dat & 0x01;
dat >>= 1;
if(b)
{
ds = 0; i++; i++;
ds = 1;
i = 8; while(i>0) i--;
}
else
{
ds = 0;
i = 8; while(i>0) i--;
ds = 1;
i++; i++;
}
}
}
void sendChangeCmd()
{
dsInit();
dsWait();
delayMs(1);
writeByte(0xcc);
writeByte(0x44);
}
void sendReadCmd()
{
dsInit();
dsWait();
delayMs(1);
writeByte(0xcc);
writeByte(0xbe);
}
int getTmpValue()
{
unsigned int tmpvalue;
int value;
float t;
unsigned char low, high;
sendReadCmd();
low = readByte();
high = readByte();
tmpvalue = high;
tmpvalue <<= 8;
tmpvalue |= low;
value = tmpvalue;
t = value * 0.0625;
value = t * 100 + (value > 0 ? 0.5 : -0.5); //大于0加0.5, 小于0减0.5
return value;
}
void display_tmp(int v)
{
unsigned char count;
unsigned char datas[] = {0, 0, 0, 0, 0};
unsigned int tmp = abs(v);
datas[0] = tmp / 10000;
datas[1] = tmp % 10000 / 1000;
datas[2] = tmp % 1000 / 100;
datas[3] = tmp % 100 / 10;
datas[4] = tmp % 10;
writeComm(0xc0+6);
if(v < 0)
{
writeString("- ", 2);
}
else
{
writeString("+ ", 2);
}
if(datas[0] != 0)
{
writeData('0'+datas[0]);
}
for(count = 1; count != 5; count++)
{
writeData('0'+datas[count]);
if(count == 2)
{
writeData('.');
}
}
}
//HC-SR04
void delayt(uint x)
{
uchar j;
while(x-- > 0)
{
for(j = 0;j < 125;j++)
{
;
}
}
}
void Init_MCU(void)//初始化单片机函数
{
TMOD = 0x01;
TL0 = 0x66;
TH0 = 0xfc; //1ms
ET0 = 1; //开定时器2
EA = 1; //总中断使能
}
void Init_Parameter(void)
{
OUTPUT =1;
INPUT = 1;
count = 0;
distance = 0;
}
void display_char(uchar *point,uchar address)//显示字符串
{
uchar i;
write_com(0x80 + address);
for(i = 0;i < 16; i++)
{
write_date(*point);
point++;
}
}
void display_dis(int number,uchar address)//显示距离
{
uchar b,c,d,e;
b= (number / 1000);
c= (number / 100) % 10;
d = (number / 10) % 10;
e = number % 10;
write_com(0x80 + address);
write_date(b + 48);
write_date(c + 48);
write_date(d + 48);
write_date(46); //小数点的ASCII
write_date(e + 48);
write_date(99); //"c"的ASCII
write_date(109); //"m"的ASCII
write_date(32); write_date(32); //空格的ASCII
}
void Trig_SuperSonic(void)//出发声波
{
OUTPUT = 1;
delayt(1);
OUTPUT = 0;
}
void Measure_Distance(void)//计算距离函数
{
uchar l;
uint h,y;
TR0 = 1;
while(INPUT)
{
;
}
TR0 = 0;
l = TL0;
h = TH0;
y = (h << 8) + l;//回声信号时间差
y = y - 0xfc66;//单位是us
distance = y + 1000 * count;//计算总时间
TL0 = 0x66;
TH0 = 0xfc;
delayt(30);
distance = VELOCITY_26C * distance / 20000;
thickness=210-distance;
}
void main(void)
{
initLCD();
Init_MCU();
Init_Parameter();
sendChangeCmd();
// UART_Init(); // 波特率9600
writeComm(0xc0);
writeString(table0, 8);
display_char(table,0x00);
beep=1;
while(1)
{
ES=0;
delayMs(1000); //温度转换时间需要750ms以上
writeComm(0xc0);
display_tmp(getTmpValue());
sendChangeCmd();
Trig_SuperSonic(); //触发超声波发射
while(INPUT == 0) //等待回声
{
;
}
Measure_Distance(); //计算脉宽并转换为距离
display_dis(thickness,0x07); //显示厚度
// if(thickness>=100)
// {
// ES=1;TR0=0;
// UART_SendString("The thickness exceeds the warning value!");
// ES=0;
// beep=0;
// }
Init_Parameter(); // 参数重新初始化
delayt(100);
}
}
void timer0 (void) interrupt 1 //T0中断处理函数
{
TF0 = 0;
TL0 = 0x66;
TH0 = 0xfc;
count++;
if(count == 18)//超声波回声脉宽最多18ms
{
TR0 =0;
TL0 = 0x66;
TH0 = 0xfc;
count = 0;
}
}
void UART_INTERRUPT() interrupt 4
{
static int i = 0; // 静态局部变量，被初始化一次
if (RI) { // 中断处理函数中，对于接收中断的响应
RI = 0; // 清除接收中断标志位
pass[i] = SBUF;
i++;
if (i == 2) {
pass[i] = '\0'; // 添加字符串结束符
i = 0;
}
}
if (TI); // 处理发送中断
}注释部分是蓝牙

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