//****************************************************************************************** // PIC18F14K50 Sample Program // Project : // Program Name : // Programer : // Create date : Version 1.0 H22.12.01 // 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_tmper(unsigned int, unsigned int, unsigned char ); void InitADC(void); void GetADC(unsigned int *); void Int_Timer(void); void isr (void); // #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 #define PI_DSP_ANL 1 #define PI_DSP_PRN 2 #define PI_data_MAX 100 // volatile unsigned int G_tmper_data[PI_data_MAX]; 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 tmper_data; unsigned int lp; unsigned char msg[9]; // ***************************** // 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(); // ***************************** // 2.Program main // ***************************** // (1)Send Message Demo01(); // (2)Start Program while(1){ if((PORTB & 0b01010000) == 0b00000000){ }else{ if((PORTB & 0b01000000) != 0x00){ if(G_flag==0){ Int_Timer(); G_flag=1; } }else{ T1CON = T1CON & 0b11111110; //Stop Timer 1 INTCON = INTCON & 0b00111111; //Interrupt disables for(lp=0;lp: 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; } } //****************************************************************************************** // Function Name : Int_Timer // Title : // Input : // Output : //****************************************************************************************** void Int_Timer(void) { // ******************************************************* // 1.Define Interrupts // Timer1 interrupt, if enabled, is generated on overflow, which is latched in the TMR1IF // interrupt flag bit of the PIR1 register. This interrupt can be enabled or disabled // by setting or clearing the TMR1IE Interrupt Enable bit of the PIE1 register. // ******************************************************* // (1)Define INTCON(INTERRUPT CONTROL)Register // INTCON(7) GIE/GIEH(Global Interrupt Enable bit) // INTCON(6) PEIE/GIEL(Peripheral Interrupt Enable bit) // 1 = Enables, 0 = Disables INTCON = INTCON | 0b11000000; // (2)Define PIR1(PERIPHERAL INTERRUPT REQUEST)Register // PIR1(0) TMR1IF(TMR1 Overflow Interrupt Flag bit) // 1 = Enables, 0 = Disables PIR1 = PIR1 | 0b00000001; // (3)Define PIE1(PERIPHERAL INTERRUPT ENABLE)Register // PIE1(0) TMR1IE(TMR1 Overflow Interrupt Enable bit) // 1 = Enables, 0 = Disables PIE1 = PIE1 | 0b00000001; // (4)Define IPR1(PERIPHERAL INTERRUPT PRIORITY REGISTER 1) // IPR1(0) TMR1IP(TMR1 Overflow Interrupt Priority bit) // 1 = High priority, 0 = Low priority // IPR1 = IPR1 | 0b00000001; IPR1 = IPR1 | 0b00000000; // ******************************************************* // 2.Define T1CON(TIMER1 CONTROL REGISTER) Register //* T1CON(7) RD16: 16-bit Read/Write Mode Enable bit // 1 = Enables register read/write of TImer1 in one 16-bit operation // 0 = Enables register read/write of Timer1 in two 8-bit operations //* T1CON(6) T1RUN: Timer1 System Clock Status bit // 1 = Main system clock is derived from Timer1 oscillator // 0 = Main system clock is derived from another source //* T1CON(5-4)T1CKPS<1:0>: 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 // ******************************************************* // 3.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; } //****************************************************************************************** // Function Name : isr // Title : interrupt // Input : // Output : //****************************************************************************************** #pragma code Int_addr=0x8 void Int_function (void) { _asm GOTO isr _endasm } #pragma code #pragma interruptlow isr void isr (void) { unsigned char tmp_line[20]; unsigned int adc_data; unsigned int lp; // ******************* // 1. 1 Second // ******************* if(G_int_counter < 100){ TMR1H = 0xC5; TMR1L = 0x67; PIR1bits.TMR1IF = 0; G_int_counter++; }else if(G_counter >= PI_data_MAX){ T1CON = T1CON & 0b11111110; //Stop Timer 1 INTCON = INTCON & 0b00111111; //Interrupt disables }else{ // ******************* // 2. Else // ******************* // (1)Set timer TMR1H = 0xC5; TMR1L = 0x67; PIR1bits.TMR1IF = 0; G_int_counter = 0; // (2)Get A/D-data GetADC(&adc_data); G_tmper_data[G_counter] = (float)((float)5000 * (float)adc_data / (float)1023 + (float)0.5); // (3)Display Dsp_tmper(G_tmper_data[G_counter], G_counter, PI_DSP_ANL); G_counter++; } }