單片機+LCD12864串行顯示魚缸水質,但是超聲波水位的數值一直顯示不出,是什么問題求解

ID:652483 · 發表于 2021-4-12 18:12

主程序

#include <reg52.h>
#include <intrins.h>
#include "LCD12864.h"
#include "timer1.h"
#include "ADC0832.h"
#include "DS18B20.h"
#include "eepom52.h"
#include "HC_SR04.h"
sbit beep = P2^0;
sbit setKey = P3^3;
sbit addKey = P3^4;
sbit subKey = P3^5;
float dataV[4]= {0};
unsigned char dataTH[8]={110,30, 99, 30, 8,2, 45, 15};
unsigned char lcd[8] = {0};
void alarm();
void delay(unsigned int i){
while(i--);
}
float pre_ph_v, phv;
void setKeyDeal();
void addKeyDeal();
void subKeyDeal();
//³õÊ¼»¯eeprom
void init_eeprom(){
unsigned char is_first_init = byte_read(0x2020);
if(is_first_init == 1){
dataTH[0] = byte_read(0x2000);
dataTH[1] = byte_read(0x2001);
dataTH[2] = byte_read(0x2002);
dataTH[3] = byte_read(0x2003);
dataTH[4] = byte_read(0x2004);
dataTH[5] = byte_read(0x2005);
dataTH[6] = byte_read(0x2006);
dataTH[7] = byte_read(0x2007);
}else{
SectorErase(0x2000);
byte_write(0x2000, dataTH[0]);
byte_write(0x2001, dataTH[1]);
byte_write(0x2002, dataTH[2]);
byte_write(0x2003, dataTH[3]);
byte_write(0x2004, dataTH[4]);
byte_write(0x2005, dataTH[5]);
byte_write(0x2006, dataTH[6]);
byte_write(0x2007, dataTH[7]);
byte_write(0x2020, 1);
}
}
//¸üÐÂeeprom´æ´¢µÄÊý¾Ý
void update_eeprom(){
SectorErase(0x2000);
byte_write(0x2000, dataTH[0]);
byte_write(0x2001, dataTH[1]);
byte_write(0x2002, dataTH[2]);
byte_write(0x2003, dataTH[3]);
byte_write(0x2004, dataTH[4]);
byte_write(0x2005, dataTH[5]);
byte_write(0x2006, dataTH[6]);
byte_write(0x2007, dataTH[7]);
byte_write(0x2020, 1);
}
void updateLCD(){
dataV[0] = get_0832_AD_data(0); //PH
dataV[1] = get_0832_AD_data(1); //ZD
dataV[2] = get_hc_sr04_distance();//Ë®Î»
dataV[3] = Get18B20Temp(); //WD
phv = -58.87*(dataV[0]*5.0/255.0) + 216.77;
if(phv > 141 || phv < 0 ) { phv = pre_ph_v; }
pre_ph_v = phv;
lcd[0] = ((int)phv)%1000/100+48;
lcd[1] = ((int)phv)%100/10 + 48;
lcd[2] = '.';
lcd[3] = ((int)phv)%10 + 48;
lcd[4] = '\0';
PutStr(0,1, lcd);
dataV[0] = phv;
dataV[1] = dataV[1] /2.55;
if(dataV[1] > 99) dataV[1] = 99;
lcd[0] = ((int)dataV[1])%100/10 + 48;
lcd[1] = ((int)dataV[1])%10 + 48;
lcd[2] = '\0';
PutStr(1,1, lcd);
dataV[2] = 10 - (dataV[2]-40) /19;
if(dataV[2] > 10) dataV[2] = 10;
if(dataV[2] < 0) dataV[2] = 0;
lcd[0] = ((int)dataV[2])%100/10 + 48;
lcd[1] = ((int)dataV[2])%10 + 48;
lcd[2] = '\0';
PutStr(2,1, lcd);
lcd[0] = ((int)dataV[3])%100/10 + 48;
lcd[1] = ((int)dataV[3])%10 + 48;
lcd[2] = '\0';
PutStr(3,1, lcd);
}
void updateTH(){
lcd[0] = ((int)dataTH[0])%1000/100+48;
lcd[1] = ((int)dataTH[0])%100/10 + 48;
lcd[2] = '\0';
PutStr(0,4, lcd);
lcd[0] = ((int)dataTH[1])%1000/100+48;
lcd[1] = ((int)dataTH[1])%100/10 + 48;
lcd[2] = '\0';
PutStr(0,7, lcd);
lcd[0] = ((int)dataTH[2])%100/10+48;
lcd[1] = ((int)dataTH[2])%10 + 48;
lcd[2] = '\0';
PutStr(1,4, lcd);
lcd[0] = ((int)dataTH[3])%100/10+48;
lcd[1] = ((int)dataTH[3])%10 + 48;
lcd[2] = '\0';
PutStr(1,7, lcd);
lcd[0] = ((int)dataTH[4])%100/10+48;
lcd[1] = ((int)dataTH[4])%10 + 48;
lcd[2] = '\0';
PutStr(2,4, lcd);
lcd[0] = ((int)dataTH[5])%100/10+48;
lcd[1] = ((int)dataTH[5])%10 + 48;
lcd[2] = '\0';
PutStr(2,7, lcd);
lcd[0] = ((int)dataTH[6])%100/10+48;
lcd[1] = ((int)dataTH[6])%10 + 48;
lcd[2] = '\0';
PutStr(3,4, lcd);
lcd[0] = ((int)dataTH[7])%100/10+48;
lcd[1] = ((int)dataTH[7])%10 + 48;
lcd[2] = '\0';
PutStr(3,7, lcd);
}
void timer1(){
updateLCD();
updateTH();
alarm();
}
void main(){
init_hc_sr04();
DS18B20Init();
LcmInit(); //LCD12864³õÊ¼»¯
LcmClearTXT(); //LCD12864ÇåÆÁ
init_eeprom();
timer1_start(1000, timer1);
PutStr(0,0, "PH H L ");
PutStr(1,0, "ZD H L ");
PutStr(2,0, "SW H L ");
PutStr(3,0, "WD H L ");
while(1){
setKeyDeal();
addKeyDeal();
subKeyDeal();
}
}

復制代碼

超聲波

#include "HC_SR04.h"
unsigned char FLAG_OVERFLOW = 0; //³¬Éù²¨Ê±¼ä¹ý³¤Òç³ö±êÖ¾
//10us
void delay10us(unsigned int i)
{
while(i--);
}
void init_hc_sr04()
{
TRIG = 0;
TMOD &= 0xf0;
TMOD |= 0x01;
TH0 = 0x3c;
TL0 = 0xb0;
TF0 = 0;
ET0 = 1;
PT0 = 1;
EA = 1;
}
void timer0() interrupt 1
{
FLAG_OVERFLOW=1;
}
int get_hc_sr04_distance(){
unsigned int distance;
TH0 = 0x3c;
TL0 = 0xb0;
TR0 = 0;
FLAG_OVERFLOW = 0;
TRIG = 1;
delay10us(2);
TRIG = 0;
TR0 = 1;
while(!ECHO && FLAG_OVERFLOW == 0);
TH0 = 0x3c;
TL0 = 0xb0;
TR0 = 1;
while(ECHO && FLAG_OVERFLOW == 0);
TR0 = 0;
distance = TH0 << 8 | TL0;
distance = (distance-15536)/58;
if(FLAG_OVERFLOW == 1){
FLAG_OVERFLOW = 0;
distance = 999;
}
return distance;
}

復制代碼

ID:476215 · 發表于 2021-4-12 23:05

我感覺問題可能出在timer1上面，看你的代碼timer1沒有指定中斷的位置。邏輯上這種長時間的中斷操作的話建議進入以后先關總中斷（因為你超聲波也用了中斷外部中斷的優先級相對較高）

ID:652483 · 發表于 2021-4-12 23:13

qee654 發表于 2021-4-12 23:05
我感覺問題可能出在timer1上面，看你的代碼timer1沒有指定中斷的位置。邏輯上這種長時間的中斷操作的話建議 ...

但是顯示是正確的，超聲波的數值一直不變，不知道是不是超聲波壞了

ID:476215 · 發表于 2021-4-12 23:17

超聲波使用的時候有兩個地方要注意：1、超聲波有死區，大概是3cm的樣子，太近的話超聲波測的值會為0或者亂跳；2、超聲波實際是具有方向性的，測試的時候先垂直測試，然后再考慮其他。
如果這兩個都排除了的話建議編一個就超聲波的程序或者使用例程測一下看模塊是不是真的有問題

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單片機+LCD12864串行顯示魚缸水質,但是超聲波水位的數值一直顯示不出,是什么問題求解