求大神幫忙看一下lcd1602程序是不是定時(shí)中斷哪里出問題了

ID:187588 · 發(fā)表于 2017-4-8 23:17

30.6后面的東西不曉得咋出來的,下面T2后面本來是通過按鍵設(shè)定數(shù)值的，現(xiàn)在也不行了，是不是定時(shí)中斷哪里出問題了，求大神指點(diǎn)指點(diǎn)。（這是主程序，問題就這這里面就是不曉得在哪里）

#include <reg52.h>
#include<stdlib.h>
#include<intrins.h>
sbit RELAY = P2^4; //定義繼電器對(duì)應(yīng)單片機(jī)管腳
bit flag1s = 0; //1s定時(shí)標(biāo)志
unsigned char T0RH = 0; //T0重載值的高字節(jié)
unsigned char T0RL = 0; //T0重載值的低字節(jié)
unsigned char T1RH = 0; //T0重載值的高字節(jié)
unsigned char T1RL = 0; //T0重載值的低字節(jié)
extern bit Start18B20();
extern bit Get18B20Temp(int *temp);
extern void InitLcd1602();
extern void LcdShowStr(unsigned char *str);
extern void LcdSetCursor(unsigned char addr);
extern void LcdWriteDat(unsigned char dat);
extern void LcdWriteCmd(unsigned char del);
extern void keyscan();
extern unsigned char key,flag1;
unsigned char a[7];
/**********************/
struct _pid{
float SV;//用戶設(shè)定溫度
float PV; //測(cè)量溫度
float KP; //比例常數(shù)
float T; //PID計(jì)算周期--采樣周期
float TI; //積分常數(shù)
float TD; //微分常數(shù)
float EK; //本次偏差
float EK_1;//上次偏差
float SEK; //歷史偏差之和
float IOUT;//積分輸出
float POUT; //比例輸出
float DOUT;//微分輸出
float OUT0;
float OUT;
unsigned int C10ms;
unsigned char pwmcycle;//pwm周期
}PID;
/********************************************/
void pid_init()
{
PID.KP=20;
PID.T=1000;
PID.TI=5000;
PID.TD=1200;
PID.pwmcycle=1000;//PWM的周期
}
/***********************************************/
void ConfigTimer0(unsigned int ms);
void ConfigTimer1(unsigned int ms1);
void pid_calc(); //PID計(jì)算
void pid_out(); //PID輸出結(jié)果到負(fù)載
void main()
{
unsigned char m;
unsigned char i,e=0;
unsigned char IntToString(unsigned char *str, int dat);
unsigned char code table[]={'0','1','2','3','4','5','6','7','8','9', '.','-',':',' ','=','.'};
bit res;
int temp; //讀取到的當(dāng)前溫度值
int intT, decT; //溫度值的整數(shù)和小數(shù)部分
unsigned char len;
unsigned char str[5];
unsigned char stt[16] = {"T1:"};
unsigned char sty[16] = {"T2:"};
EA = 1; //開總中斷
ConfigTimer0(10); //T0定時(shí)10ms
ConfigTimer1(1); //T1定時(shí)1ms
Start18B20(); //啟動(dòng)DS18B20
InitLcd1602(); //初始化液晶
pid_init() ;
LcdWriteCmd(0x0C); //關(guān)閉光標(biāo)閃爍
/*實(shí)時(shí)溫度*/
while(1)
{
/*顯示實(shí)時(shí)溫度標(biāo)識(shí)"T1:"*/
LcdSetCursor(0x00);
m = 0;
while(stt[m] != '\0')
{
LcdWriteDat(stt[m]);
m++;
}
/*顯示設(shè)定溫度標(biāo)識(shí)"T2:"*/
LcdSetCursor(0x40);
m = 0;
while(sty[m] != '\0')
{
LcdWriteDat(sty[m]);
m++;
}
if (flag1s) //每秒更新一次溫度
{
flag1s = 0;
res = Get18B20Temp(&temp); //讀取當(dāng)前溫度
if (res) //讀取成功時(shí)，刷新當(dāng)前溫度顯示
{
intT = temp >> 4; //分離出溫度值整數(shù)部分
decT = temp & 0xF; //分離出溫度值小數(shù)部分
len = IntToString(str, intT); //整數(shù)部分轉(zhuǎn)換為字符串
str[len++] = '.'; //添加小數(shù)點(diǎn)
decT = (decT*10) / 16; //二進(jìn)制的小數(shù)部分轉(zhuǎn)換為1位十進(jìn)制位
str[len++] = decT + '0'; //十進(jìn)制小數(shù)位再轉(zhuǎn)換為ASCII字符
LcdShowStr(str); //顯示到液晶屏上
Start18B20();
PID.PV=atof(str);
}
}
/*設(shè)定溫度*/
keyscan();
if(flag1==1)
{
if(key<11) //10以下是數(shù)字顯示部分
{
LcdSetCursor(0x43+e++) ;
LcdWriteDat(table[key]);
a[i]=table[key];
i++;
PID.SV=atof(&a);
}
else if(key==11)
{
LcdWriteCmd(0x01) ; //刪除設(shè)定值
e=0;
for(i=0;i<7;i++)
{
a[i]='0';
}
}
flag1=0; //鍵盤檢測(cè)標(biāo)志置0進(jìn)行下一次檢測(cè)
}
pid_calc();
}
}
/* 整型數(shù)轉(zhuǎn)換為字符串，str-字符串指針，dat-待轉(zhuǎn)換數(shù)，返回值-字符串長(zhǎng)度 */
unsigned char IntToString(unsigned char *str, int dat)
{
signed char i = 0;
unsigned char len = 0;
unsigned char buf[6];
if (dat < 0) //如果為負(fù)數(shù)，首先取絕對(duì)值，并在指針上添加負(fù)號(hào)
{
dat = -dat;
*str++ = '-';
len++;
}
do
{ //先轉(zhuǎn)換為低位在前的十進(jìn)制數(shù)組
buf[i++] = dat % 10;
dat /= 10;
} while (dat > 0);
len += i; //i最后的值就是有效字符的個(gè)數(shù)
while (i-- > 0) //將數(shù)組值轉(zhuǎn)換為ASCII碼反向拷貝到接收指針上
{
*str++ = buf[i] + '0';
}
*str = '\0'; //添加字符串結(jié)束符
return len; //返回字符串長(zhǎng)度
}
/* 配置并啟動(dòng)T0，ms-T0定時(shí)時(shí)間 10ms*/
void ConfigTimer0(unsigned int ms)
{
unsigned long tmp; //臨時(shí)變量
tmp = 11059200 / 12; //定時(shí)器計(jì)數(shù)頻率
tmp = (tmp * ms) / 1000; //計(jì)算所需的計(jì)數(shù)值
tmp = 65536 - tmp; //計(jì)算定時(shí)器重載值
tmp = tmp + 12; //補(bǔ)償中斷響應(yīng)延時(shí)造成的誤差
T0RH = (unsigned char)(tmp>>8); //定時(shí)器重載值拆分為高低字節(jié)
T0RL = (unsigned char)tmp;
TMOD &= 0xF0; //清零T0的控制位
TMOD |= 0x01; //配置T0為模式1
TH0 = T0RH; //加載T0重載值
TL0 = T0RL;
ET0 = 1; //使能T0中斷
TR0 = 1; //啟動(dòng)T0
}
/* T0中斷服務(wù)函數(shù)，10ms一次，完成1秒定時(shí) */
void InterruptTimer0() interrupt 1
{
static unsigned char tmr1s = 0;
TH0 = T0RH; //重新加載重載值
TL0 = T0RL;
tmr1s++;
PID.C10ms++;
if (tmr1s >= 100) //定時(shí)1s
{
tmr1s = 0;
flag1s = 1;
}
}
/* 配置并啟動(dòng)T1，ms-T1定時(shí)時(shí)間1ms */
void ConfigTimer1(unsigned int ms1)
{
unsigned long tmp1; //臨時(shí)變量
tmp1 = 11059200 / 12; //定時(shí)器計(jì)數(shù)頻率
tmp1 = (tmp1 * ms1) / 1000; //計(jì)算所需的計(jì)數(shù)值
tmp1 = 65536 - tmp1; //計(jì)算定時(shí)器重載值
tmp1 = tmp1 + 12; //補(bǔ)償中斷響應(yīng)延時(shí)造成的誤差
T1RH = (unsigned char)(tmp1>>8); //定時(shí)器重載值拆分為高低字節(jié)
T1RL = (unsigned char)tmp1;
TMOD &= 0xF0; //清零T1的控制位
TMOD |= 0x01; //配置T1為模式1
TH1 = T1RH; //加載T1重載值
TL1 = T1RL;
ET1 = 1; //使能T1中斷
TR1 = 1; //啟動(dòng)T1
}
/* T1中斷服務(wù)函數(shù)，1ms一次 */
void InterruptTimer1() interrupt 3
{
TH1 = T1RH; //重新加載重載值
TL1 = T1RL;
// PID.C10ms++;
pid_out(); //輸出PID運(yùn)算結(jié)果到負(fù)載
}
void pid_calc()
{
float DELEK;
float ti;
float ki;
float td;
float kd;
float out;
if(PID.C10ms<(PID.T/10))
{return;}
PID.EK=PID.SV-PID.PV; //當(dāng)前偏差
PID.POUT=PID.KP*PID.EK;//比例輸出
PID.SEK+=PID.EK; //歷史偏差
DELEK=PID.EK-PID.EK_1;//最近兩次偏差之差
ti=PID.T/PID.TI;
ki=ti*PID.KP;
PID.IOUT=ki*PID.SEK*PID.KP; //積分輸出
td=PID.TD/PID.T;
kd=PID.KP*td;
PID.DOUT=kd*DELEK;
PID.OUT=PID.POUT+PID.IOUT+PID.DOUT+PID.OUT0;//計(jì)算結(jié)果
if(PID.OUT>PID.pwmcycle)
{PID.OUT=PID.pwmcycle;}
if(PID.OUT<0)
{PID.OUT=0;}
PID.OUT=out;
PID.EK_1=PID.EK;//更新偏差
PID.C10ms=0;
}
void pid_out() //每一毫秒運(yùn)算一次
{
static unsigned char pw;
pw++;
if(pw>PID.pwmcycle) //pw=0-999
{pw=0;}
if(pw<PID.OUT)
{
RELAY=0;//加熱
}
else
{
RELAY=1;//停止加熱
}
}