//#include #include #include #include #include #define lcd_data PORTC #define lcd_rs PORTCbits.RC0 #define lcd_rw PORTCbits.RC1 #define lcd_e PORTCbits.RC3 #define Button1 PORTBbits.RB3 #define Button2 PORTBbits.RB2 #define Button3 PORTBbits.RB1 #define Button4 PORTBbits.RB0 void Delay(unsigned int); void WriteLcd(char); void PositionLcd(unsigned char); void InitLcd(void); void ClearLcd(void); void WriteDec(int , unsigned char); void Boot(void); void InterruptHandlerHigh (void); void LoadData(void); void WriteEEProm(unsigned char, unsigned char); unsigned char ReadEEProm(unsigned char); unsigned int AdConv(void); /* EEPROM 00 Pointer 01 02 Temperature1 03 04 Temperature2 05 06 Temperature3 */ unsigned char i, mTimer = 0, mTimer2 = 0, mTimer3 = 0, EepromData, EepromAddres, Counter = 1, PwmData, temp1, temp2, temp3, temp4, Pointer, adl, adh, portb, lb, hb, Plus, Minus; unsigned int ihighl = 0, setpoint = 300, T1, T2, T3; int temperature, temp, test, power; float m = 0.7998037 ,b = 19.267255, P = 2.0, I = 0.08, D = 0.05, dT = 0.1, error = 0, dI = 0, dD = 0, varP, varI, varD, varE = 0, varPWM, varTEMP; struct { unsigned Pwm:1; unsigned Display:1; unsigned Button:1; unsigned TimeOut:1; unsigned NU2:1; unsigned NU3:1; unsigned NU4:1; unsigned NU5:1; }Control; void main(void) { Boot(); while(1) { if(PORTB != 15)Control.Button = 1; if(Control.Pwm == 1) { AdConv(); ihighl = ((setpoint - 50) / 2.6); if(setpoint >= 400)ihighl += 10; varTEMP = (((float)adh * 255) + (float)adl); temperature = (unsigned int)((varTEMP * m) - b); Control.Pwm = 0; error = ((float)setpoint - (float)temperature); varP = P * error; varI += (dT * error * I); if(varI < 0)varI = 0; if(varI > ihighl)varI = (float)ihighl; varD = (((error - varE)/dT) * D); varPWM = varP + varI + varD; if(varPWM < 0)varPWM = 0; if(varPWM > 255)varPWM = 255; CCPR1L = varPWM; if(error < -100)error = -100; if(error > 100)error = 100; varE = error; } if(Control.Display == 1) { Control.Display = 0; PositionLcd(0x02); WriteDec(((unsigned int)CCPR1L * 100 )/ 255,2); if(temperature >= 500) { PositionLcd(11); WriteLcd('-'); WriteLcd('-'); WriteLcd('-'); } else { PositionLcd(11); WriteLcd(' '); WriteLcd(' '); WriteDec(temperature,11); } } if(Control.Button == 1) { Control.Button = 0; if(!Button1) { if(Pointer != 1) { setpoint = T1; PositionLcd((Pointer * 4)+0x3F); WriteLcd(' '); Pointer = 1; PositionLcd(0x43); WriteLcd(0x7F); WriteEEProm(1,0); while(!Button1); } } else if(!Button2) { if(Pointer != 2) { setpoint = T2; PositionLcd((Pointer * 4)+0x3F); WriteLcd(' '); Pointer = 2; PositionLcd(0x47); WriteLcd(0x7F); WriteEEProm(2,0); while(!Button2); } } else if(!Button3) { if(Pointer != 3) { setpoint = T3; PositionLcd((Pointer * 4)+0x3F); WriteLcd(' '); Pointer = 3; PositionLcd(0x4B); WriteLcd(0x7F); WriteEEProm(3,0); while(!Button3); } } else if(!Button4) { INTCONbits.GIE = 0; CCPR1L = 0; ClearLcd(); WriteLcd('T'); WriteLcd('='); WriteDec(setpoint,0x02); PositionLcd(0x05); WriteLcd(0b11011111); //° WriteLcd(0b01000011); //C PositionLcd(0x42); WriteLcd('-'); PositionLcd(0x46); WriteLcd('+'); PositionLcd(0x49); WriteLcd('E'); WriteLcd('s'); WriteLcd('c'); PositionLcd(0x4E); WriteLcd('O'); WriteLcd('K'); while(Button3 & Button4) { Plus = 0;Minus =0; if(!Button1) { while(!Button1) { setpoint--; Minus++; if(Minus >= 10) { setpoint -= 9; Minus = 10; } if(setpoint > 450)setpoint = 450; if(setpoint < 1)setpoint = 0; PositionLcd(0x02); WriteLcd(' '); WriteLcd(' '); WriteLcd(' '); WriteDec(setpoint,0x02); Delay(65535); } } if(!Button2) { while(!Button2) { setpoint++; Plus++; if(Plus >= 10) { setpoint += 9; Plus = 10; } if(setpoint > 450)setpoint = 450; if(setpoint < 1)setpoint = 0; PositionLcd(0x02); WriteLcd(' '); WriteLcd(' '); WriteLcd(' '); WriteDec(setpoint,0x02); Delay(65535); } } } if(!Button4) { _asm movff setpoint,lb movff setpoint+1,hb _endasm WriteEEProm(lb,((Pointer*2)-1)); WriteEEProm(hb,(Pointer*2)); if(Pointer == 1)T1 = setpoint; else if(Pointer == 2)T2 = setpoint; else if(Pointer == 3)T3 = setpoint; } ClearLcd(); WriteLcd('P'); WriteLcd('='); WriteDec(CCPR1L * 100 / 255,2); PositionLcd(5); WriteLcd('%'); PositionLcd(9); if(temperature >= 500) { PositionLcd(11); WriteLcd('-'); WriteLcd('-'); WriteLcd('-'); } else { WriteDec(temperature,11); } PositionLcd(14); WriteLcd(0b11011111); //° WriteLcd(0b01000011); //C T2CONbits.TMR2ON = 1; LoadData(); WriteDec(T1,0x40); WriteDec(T2,0x44); WriteDec(T3,0x48); PositionLcd(0x4C); WriteLcd(' '); WriteLcd('S'); WriteLcd('e'); WriteLcd('t'); PositionLcd((Pointer * 4)+0x3F); WriteLcd(0x7F); INTCONbits.GIE = 1; } } } } void Boot (void) { ADCON0 = 0b10001001; //AD converter ADCON1 = 0b11000100; TRISA = 0xFF; TRISB = 0b11111111; //Key pad TRISC = 0; //LCD communication port & PWM prot PORTC = 0x00; T2CON = 0b00100000; //Timer 2 CCP1CON =0b00001111; //PWM initialization. 1.22kHz CCPR1L = 0; //0% duty cycle PR2 = 0xFF; //8 bit resolution WriteEEProm(0x01,6); AdConv(); varTEMP = (((float)adh * 255) + (float)adl); temperature = (unsigned int)((varTEMP * m) + b); InitLcd(); //LCD initialization ClearLcd(); WriteLcd('P'); WriteLcd('='); WriteDec(CCPR1L * 100 / 255,2); PositionLcd(5); WriteLcd('%'); PositionLcd(9); if(temperature >= 500) { PositionLcd(11); WriteLcd('-'); WriteLcd('-'); WriteLcd('-'); } else { WriteDec(temperature,11); } PositionLcd(14); WriteLcd(0b11011111); //° WriteLcd(0b01000011); //C T2CONbits.TMR2ON = 1; LoadData(); WriteDec(T1,0x40); WriteDec(T2,0x44); WriteDec(T3,0x48); PositionLcd(0x4C); WriteLcd(' '); WriteLcd('S'); WriteLcd('e'); WriteLcd('t'); PositionLcd((Pointer * 4)+0x3F); WriteLcd(0x7F); // TXSTA = 0b00000100; //Init seial port // RCSTA = 0b10000000; // SPBRG = 0x0A; //The baudrate is 115200 // RCSTAbits.CREN = 1; //Enable serial recver modul // TXSTAbits.TXEN = 1; INTCONbits.GIE = 1; //Interrupts INTCONbits.PEIE = 1; PIE1bits.TMR2IE = 1; return; } void InitLcd(void) { PORTC = 0b00110000; //DL=1 8 bit interface lcd_e = 1; Delay(65535); lcd_e = 0; PORTC = 0b00110000; //DL=1 8 bit interface lcd_e = 1; Delay(1024); lcd_e = 0; PORTC = 0b00110000; //DL=1 8 bit interface lcd_e = 1; Delay(65535); lcd_e = 0; PORTC = 0b00100000; //DL=1 4 bit interface lcd_e = 1; Delay(255); lcd_e = 0; PORTC = 0b00100000; //DL=1 4 bit interface lcd_e = 1; Delay(255); lcd_e = 0; PORTC = 0b10000000; //N=1 2 line display lcd_e = 1; //F=0 5x7 dot matrix Delay(255); lcd_e = 0; PORTC = 0b00000000; lcd_e = 1; Delay(255); lcd_e = 0; PORTC = 0b11000000; //D,C,B lcd_e = 1; Delay(255); lcd_e = 0; PORTC = 0b00000000; //Clear LCD lcd_e = 1; Delay(255); lcd_e = 0; PORTC = 0b00010000; lcd_e = 1; Delay(255); lcd_e = 0; Delay(65535); PORTC = 0b00000000; lcd_e = 1; Delay(255); lcd_e = 0; PORTC = 0b01100000; //I/D=1 Increment counter lcd_e = 1; //S=1 Automatic display shift Delay(255); lcd_e = 0; return; } void ClearLcd(void) { PORTC = 0b00000000; //Clear LCD lcd_e = 1; Delay(20); lcd_e = 0; PORTC = 0b00010000; lcd_e = 1; Delay(20); lcd_e = 0; Delay(65535); return; } void WriteLcd(char data) { unsigned char data_low, data_high; temp1 = data; _asm swapf temp1,0,1 movwf temp2,1 movlw 0xf0 andwf temp1,1,1 andwf temp2,1,1 bsf temp1,0,1 bsf temp2,0,1 _endasm data_high=temp1; data_low=temp2; PORTC = data_high; lcd_e = 1; Delay(20); lcd_e = 0; PORTC = data_low; lcd_e = 1; Delay(20); lcd_e = 0; lcd_rs = 0; Delay(20); return; } void PositionLcd(unsigned char position) { unsigned char data_low, data_high; position += 128; temp1 = position; _asm swapf temp1,0,1 movwf temp2,1 movlw 0xf0 andwf temp1,1,1 andwf temp2,1,1 _endasm data_high=temp1; data_low=temp2; PORTC = data_high; lcd_e = 1; Delay(20); lcd_e = 0; PORTC = data_low; lcd_e = 1; Delay(20); lcd_e = 0; Delay(20); return; } void WriteDec(int value , unsigned char position) { char temp, counter; counter = 3; PositionLcd(position); WriteLcd(' '); WriteLcd(' '); WriteLcd(' '); if (value == 0) { counter--; PositionLcd((counter + position)); WriteLcd('0'); return; } while (value) { counter--; PositionLcd((counter + position)); temp = value % 10; value /= 10; WriteLcd((temp+48)); } return; } unsigned int AdConv(void) { unsigned char Pwmtemp; Pwmtemp = CCPR1L; CCPR1L = 0; Delay(500); Nop(); ADCON0bits.DONE = 1; Nop(); while(ADCON0bits.DONE); CCPR1L = Pwmtemp; adl = ADRESL; adh = ADRESH; return; } void Delay(unsigned int count) { while(count--); return; } #pragma code InterruptVectorHigh = 0x08 void InterruptVectorHigh (void) { _asm goto InterruptHandlerHigh _endasm } #pragma code #pragma interrupt InterruptHandlerHigh void InterruptHandlerHigh (void) { INTCONbits.GIE = 0; if(PIR1bits.TMR2IF == 1) { PIR1bits.TMR2IF = 0; mTimer++; if(mTimer >= 100) { mTimer = 0; mTimer2++; if(mTimer2 >= 4) { Control.Pwm = 1; mTimer2 = 0; mTimer3++; if(mTimer3 >= 10) { mTimer3 = 0; Control.Display = 1; } } } } PIR1bits.ADIF = 0; INTCONbits.GIE = 1; return; } void WriteEEProm(unsigned char Data, unsigned char Address) { EEADR = Address; EEDATA = Data; EECON1bits.EEPGD=0; EECON1bits.CFGS=0; EECON1bits.WREN=1; INTCONbits.GIE=0; // This is the required sequence EECON2=0x55; EECON2=0xAA; EECON1bits.WR=1; Nop(); INTCONbits.GIE=1; while(EECON1bits.WR); EECON1bits.WREN=0; return; } unsigned char ReadEEProm(unsigned char Adress) { EEADR = Adress; EECON1bits.EEPGD = 0; EECON1bits.CFGS = 0; EECON1bits.RD = 1; Nop(); return EEDATA; } void LoadData(void) { Pointer = ReadEEProm(0); temp1 = ReadEEProm(1); temp2 = ReadEEProm(2); T1 = (((unsigned int)temp2 * 256) + (unsigned int)temp1); temp1 = ReadEEProm(3); temp2 = ReadEEProm(4); T2 = (((unsigned int)temp2 * 256) + (unsigned int)temp1); temp1 = ReadEEProm(5); temp2 = ReadEEProm(6); T3 = (((unsigned int)temp2 * 256) + (unsigned int)temp1); if(Pointer == 1)setpoint = T1; if(Pointer == 2)setpoint = T2; if(Pointer == 3)setpoint = T3; }