//****************************************************************************************** // PIC18F14K50 Sample Program // Project : // Program Name : // Programer : // Create date : Version 1.0 H23.09.10 // Replace date : // History : // Laungage : MPLAB C18 //****************************************************************************************** // Description // // 1)Define I/O PORT // PORTC(0) : DCM16117A(E) // PORTC(1) : DCM16117A(RS) // PORTC(7-4) : DCM16117A(DB7-4) // // PORTC(2) : Terminal(0) // PORTB(4) : Terminal(1) // PORTB(6) : Terminal(2) // // PORTB(5) : Serial PORT(Rx) // PORTB(7) : Serial PORT(Tx) // // 2)OSC // 48MHz (12MHz Crystal * PLL4) // //****************************************************************************************** #include #include #include #include #include #include #include #include // //Define configration // #pragma config CPUDIV=NOCLKDIV //CPU System Clock Selection bit(No CPU System Clock divide) #pragma config USBDIV = OFF //USB Clock Selection bit(USB Clock comes directly from the OSC1/OSC2 oscillator block; no divide) #pragma config FOSC = HS //Oscillator Selection bits(HS oscillator) #pragma config PLLEN = ON //X PLL Enable bit(Oscillator multiplied by 4) #pragma config PCLKEN = OFF //Primary Clock Enable Bit(Primary clock is under software control) #pragma config FCMEN = OFF #pragma config IESO = OFF //Internal/External Oscillator Switchover bit(Oscillator Switchover mode disabled) #pragma config PWRTEN = OFF,BOREN = OFF,BORV = 19 #pragma config WDTEN = OFF,WDTPS = 1 #pragma config MCLRE = OFF //MCLR Pin Enable bit(RE3 input pin enabled; MCLR disabled) #pragma config HFOFST = OFF,STVREN = OFF,LVP = OFF,BBSIZ = OFF,XINST = OFF #pragma config CP0 = OFF,CP1 = OFF,CPB = OFF,CPD = OFF,WRT0 = OFF,WRT1 = OFF,WRTB = OFF,WRTC = OFF,WRTD = OFF,EBTR0 = OFF,EBTR1 = OFF,EBTRB = OFF // //Define function // void Demo01(void); void Init_POS0(void); void Init_POS1(void); void Init_LCD(void); void LCD_Disp(unsigned char); void LCD_CLR(void); void LCD_SETH(unsigned char); void LCD_SETL(unsigned char); void BCF(unsigned int); void BSF(unsigned int); void mnop(unsigned int); void Wait_10mS(unsigned int); void Timer(void); void LCD_Disp_S(unsigned char *, unsigned char); void LCD_SCR_CLR(void); void LCD_SCR_DSP(unsigned char); void LCD_SCR_DSPS(unsigned char *, unsigned int); void Dsp(unsigned int); void InitADC(void); void GetADC(unsigned int *); // #define LCD_E 0 #define LCD_RS 1 #define LCD_DB4 4 #define LCD_DB5 5 #define LCD_DB6 6 #define LCD_DB7 7 #define TERM_0 2 #define TERM_1 4 #define TERM_2 6 #define PI_NORMAL 0 #define PI_FAILURE 1 #define PI_POS0 0 #define PI_POS1 1 #define PI_POSN 2 // // volatile unsigned int G_int_counter=0; volatile unsigned int G_counter=0; volatile unsigned int G_flag=0; void main(void) { unsigned int adc_data; unsigned int adc_max; unsigned int adc_min; unsigned int ac_data; unsigned int lp; // ***************************** // 1.Initialized Segment // ***************************** // (1)Define I/O port ANSEL = 0b00000000; //All Degital PORT ANSELH = 0b00000000; //All Degital PORT TRISA = 0b11111111; TRISB = 0b11111111; TRISC = 0b00001100; PORTA = 0x00; PORTB = 0b00; PORTC = 0x00; // (2)Initialized LCD Init_LCD(); // (3)Initialized A/D Converter InitADC(); // (4)Define Timer // Int_Timer(); // ***************************** // 2.Program main // ***************************** // (1)Send Message Demo01(); while(1){ adc_min = 1024; adc_max = 0; // for(lp=0;lp<65534;lp++){ for(lp=0;lp<20000;lp++){ GetADC(&adc_data); if(adc_data < adc_min) adc_min = adc_data ; if(adc_data > adc_max) adc_max = adc_data ; } adc_data = adc_max - adc_min ; // ac_data = (float)((float)5000 * (float)adc_data / (float)1023 + (float)0.5); //PK-PK ac_data = (float)((float)5000 * (float)adc_data / (float)1023 * (float)10 / (float)14 / (float)2 + (float)0.5); //AC-VOLT Dsp(ac_data); Wait_10mS(100); } } //****************************************************************************************** // Function name : Demo01 // Title : // Input : // Output : //****************************************************************************************** void Demo01(void) { unsigned char msg[9]; strcpypgm2ram(msg," Start P"); LCD_Disp_S(msg,PI_POS0); strcpypgm2ram(msg,"IC18F14 "); LCD_Disp_S(msg,PI_POS1); Wait_10mS(100); // LCD_CLR(); strcpypgm2ram(msg,"AC Watt "); LCD_Disp_S(msg,PI_POS0); strcpypgm2ram(msg," "); LCD_Disp_S(msg,PI_POS1); Wait_10mS(100); } //****************************************************************************************** // Function name : Dsp // Title : // Input : // Output : //****************************************************************************************** void Dsp(unsigned int t_data) { unsigned int tmp_i; unsigned char tmp_line[20]; LCD_CLR(); strcpypgm2ram(tmp_line,"AC Watt "); LCD_Disp_S(tmp_line,PI_POS0); // tmp_i = (unsigned int)(t_data); sprintf(tmp_line, "%2d",tmp_i); LCD_Disp_S(tmp_line,PI_POS1); strcpypgm2ram(tmp_line,"[W]"); LCD_Disp_S(tmp_line,PI_POSN); } //****************************************************************************************** // Function Name : InitADC // Title : // Input : // Output : // Description : Analog Channel Select (AN11) //****************************************************************************************** void InitADC(void) { // ******************************************************* // 0.Define ANSEL(ANALOG SELECT REGISTER) and ANSELH(ANALOG SELECT REGISTER 2) // ANSEL[7] ANS7: RC3 Analog Select Control bit // 1 = Digital input buffer of RC3 is disabled // 0 = Digital input buffer of RC3 is enabled // ANSEL[6] ANS6: RC2 Analog Select Control bit // 1 = Digital input buffer of RC2 is disabled // 0 = Digital input buffer of RC2 is enabled // ANSEL[5] ANS5: RC1 Analog Select Control bit // 1 = Digital input buffer of RC1 is disabled // 0 = Digital input buffer of RC1 is enabled // ANSEL[4] ANS4: RC0 Analog Select Control bit // 1 = Digital input buffer of RC0 is disabled // 0 = Digital input buffer of RC0 is enabled // ANSEL[3] ANS3: RA4 Analog Select Control bit // 1 = Digital input buffer of RA4 is disabled // 0 = Digital input buffer of RA4 is enabled // ANSEL[2-0] Unimplemented: Read as ‘0’ // // ANSELH[7-4] Unimplemented: Read as ‘0’ // ANSELH[3] ANS11: RB5 Analog Select Control bit // 1 = Digital input buffer of RB5 is disabled // 0 = Digital input buffer of RB5 is enabled // ANSELH[2] ANS10: RB4 Analog Select Control bit // 1 = Digital input buffer of RB4 is disabled // 0 = Digital input buffer of RB4 is enabled // ANSELH[1] ANS9: RC7 Analog Select Control bit // 1 = Digital input buffer of RC7 is disabled // 0 = Digital input buffer of RC7 is enabled // ANSELH[0] ANS8: RC6 Analog Select Control bit // 1 = Digital input buffer of RC6 is disabled // 0 = Digital input buffer of RC6 is enabled // ******************************************************* ANSEL = 0b00000000; ANSELH = 0b00001000; //Select ANS11 // ******************************************************* // 1.Define ADCON0(A/D CONTROL REGISTER 0) Register // ADCON0(7-6) Unimplemented: Read as ‘0’ // ADCON0(5-2) CHS<3:0>: Analog Channel Select bits // 0000 = Reserved // 0001 = Reserved // 0010 = Reserved // 0011 = AN3 // 0100 = AN4 // 0101 = AN5 // 0110 = AN6 // 0111 = AN7 // 1000 = AN8 // 1001 = AN9 // 1010 = AN10 // 1011 = AN11 // 1100 = Reserved // 1101 = Reserved // 1110 = DAC // 1111 = FVR // ADCON0(1) GO/DONE: A/D Conversion Status bit // 1 = A/D conversion cycle in progress. Setting this bit starts an A/D conversion cycle. // This bit is automatically cleared by hardware when the A/D conversion has completed. // 0 = A/D conversion completed/not in progress // ADCON0(0) ADON: ADC Enable bit // 1 = ADC is enabled // 0 = ADC is disabled and consumes no operating current // ******************************************************* ADCON0 = 0b00101101; //Select AN11 // ******************************************************* // 2.Define ADCON1(A/D CONTROL REGISTER 1) Register // ADCON1(7-4) Unimplemented: Read as ‘0’ // ADCON1(3-2) PVCFG<1:0>: Positive Voltage Reference select bit // 00 = Positive voltage reference supplied internally by VDD. // 01 = Positive voltage reference supplied externally through VREF+ pin. // 10 = Positive voltage reference supplied internally through FVR. // 11 = Reserved. // ADCON1(1-0) NVCFG<1:0>: Negative Voltage Reference select bit // 00 = Positive voltage reference supplied internally by VSS. // 01 = Positive voltage reference supplied externally through VREF- pin. // 10 = Reserved. // 11 = Reserved. // ******************************************************* ADCON1 = 0b00000000; // ******************************************************* // 3.Define ADCON2(A/D CONTROL REGISTER 2) Register // ADCON2(7) ADFM: A/D Conversion Result Format Select bit // 1 = Right justified // 0 = Left justified // ADCON2(6) Unimplemented: Read as ‘0’ // ADCON2(5-3) ACQT<2:0>: A/D Acquisition time select bits. Acquisition time is the duration that the A/D charge // holding capacitor remains connected to A/D channel from the instant the GO/DONE bit is set until // conversions begins. // 000 = 0(1) // 001 = 2 TAD // 010 = 4 TAD // 011 = 6 TAD // 100 = 8 TAD // 101 = 12 TAD // 110 = 16 TAD // 111 = 20 TAD // ADCON2(2-0) ADCS<2:0>: A/D Conversion Clock Select bits // 000 = FOSC/2 // 001 = FOSC/8 // 010 = FOSC/32 // 011 = FRC(1) (clock derived from a dedicated internal oscillator = 600 kHz nominal) // 100 = FOSC/4 // 101 = FOSC/16 // 110 = FOSC/64 // 111 = FRC(1) (clock derived from a dedicated internal oscillator = 600 kHz nominal) // ******************************************************* ADCON2 = 0b10111110; } //****************************************************************************************** // Function Name : GetADC // Title : // Input : // Output : // Description : //****************************************************************************************** void GetADC(unsigned int *adc_data) { unsigned char Dat_L,Dat_H; // ***************** // 1.Start ADC // ***************** // GO/DONE: A/D Conversion Status bit ADCON0 = ADCON0 | 0b00000010; // ***************** // 2.Get data // ***************** while((ADCON0 & 0b00000010)!=0); Dat_H = ADRESH; Dat_L = ADRESL; // ***************** // 3.Edit data // ***************** *adc_data = Dat_H * 256 + Dat_L; } //****************************************************************************************** // Function name : LCD_Disp_S // Title : // Input : // Output : //****************************************************************************************** void LCD_Disp_S(unsigned char in_str[], unsigned char flg) { unsigned int lp; unsigned int no; if(flg == PI_POS0){ Init_POS0(); }else if(flg == PI_POS1){ Init_POS1(); } no=strlen(in_str); for(lp=0;lp: Timer1 Input Clock Prescale Select bits // 11 = 1:8 Prescale value // 10 = 1:4 Prescale value // 01 = 1:2 Prescale value // 00 = 1:1 Prescale value //* T1CON(3) T1OSCEN: Timer1 Oscillator Enable bit // 1 = Timer1 oscillator is enabled // 0 = Timer1 oscillator is shut off // The oscillator inverter and feedback resistor are turned off to eliminate power drain. //* T1CON(2) T1SYNC: Timer1 External Clock Input Synchronization Select bit // When TMR1CS = 1: // 1 = Do not synchronize external clock input // 0 = Synchronize external clock input // When TMR1CS = 0: // This bit is ignored. Timer1 uses the internal clock when TMR1CS = 0. //* T1CON(1) TMR1CS: Timer1 Clock Source Select bit // 1 = External clock from the T13CKI pin (on the rising edge) // 0 = Internal clock (FOSC/4) //* T1CON(0) bit 0 TMR1ON: Timer1 On bit // 1 = Enables Timer1 // 0 = Stops Timer1 // ******************************************************* T1CON = 0b10110001; // 16-bit Read/Write Mode, 1:8 Prescale value // ******************************************************* // 2.Define TMR1 Register // Caution(16-bit Read/Write Mode) !!!!: // (a)Writing to TMR1H does not directly affect Timer1. // Instead, the high byte of Timer1 is updated with the contents of TMR1H when a write occurs to TMR1L. // This allows all 16 bits of Timer1 to be updated at once. // (b)A read from TMR1L will load the contents of the high byte of Timer1 into the Timer1 high byte buffer. // This provides the user with the ability to accurately read all 16 bits of Timer1 without the need to // determine whether a read of the high byte, followed by a read of the low byte, has become invalid due // to a rollover or carry between reads. // ******************************************************* // TMR1 data ( OSC:12MHz, 4X PLLON, 1:8 Prescale value, 0.01[S];100Hz ) // 10mS(100Hz): 12MHz * 4(PLLON) / 4(PIC) / 8(Prescale) / 100(100Hz)==> 0d15,000(Count) ==> 0x3A98(Count) // TMR1 = 0xFFFF - 0x3A98 ==> 0xC567 // TMR1H = 0xC5; TMR1L = 0x67; // ******************************************************* // 3.Timer // ******************************************************* PIR1bits.TMR1IF = 0; while(1){ if(PIR1bits.TMR1IF != 0 )break; } }