//****************************************************************************************** // PIC18F14K50 Sample Program // Project : // Program Name : // Programer : // Create date : Version 1.0 H22.11.02 // 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 Demo02(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_SCR_CLR(void); void LCD_SCR_DSP(unsigned char); void LCD_SCR_DSPS(unsigned char *, unsigned int); void InitUART(void); void SendUART(char); void ReciveUART(char *); void SendUART_s(char *); // #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_LCD_bufsize 8 unsigned int G_LCD_IDX = 0; unsigned char G_LCD_BUFH[PI_LCD_bufsize]; unsigned char G_LCD_BUFL[PI_LCD_bufsize]; void main(void) { unsigned char tmp_char; static unsigned char msg[]=" PIC18F14K50 Connected OK> "; unsigned char flg = 0; // ***************************** // 1.Initialized Segment // ***************************** // (1)Define I/O port PORTA = 0x00; PORTB = 0x00; PORTC = 0x00; TRISA = 0b11111111; TRISB = 0b11111111; TRISC = 0b00000000; ANSEL = 0b00000000; //All Degital PORT ANSELH = 0b00000000; //All Degital PORT // (2)Initialized LCD Init_LCD(); // (3)Initialize USART InitUART(); // ***************************** // 2.Program main // ***************************** // (1)Demo Program; Demo01(); SendUART_s(msg); while(1){ ReciveUART(&tmp_char); SendUART(tmp_char); if(flg==0){ LCD_CLR(); flg=1; } LCD_SCR_DSP(tmp_char); } } //****************************************************************************************** // Function name : Demo01 // Title : // Input : // Output : //****************************************************************************************** void Demo01(void) { // ******************* // Start Pic 18 表示 // ******************* // (1)領域0を選択 Init_POS0(); // (2)表示 LCD_Disp('S'); LCD_Disp('t'); LCD_Disp('a'); LCD_Disp('r'); LCD_Disp('t'); LCD_Disp(' '); LCD_Disp('P'); LCD_Disp('I'); // // (3)領域1を選択 Init_POS1(); // (4)表示 LCD_Disp('C'); LCD_Disp('1'); LCD_Disp('8'); LCD_Disp(' '); LCD_Disp(' '); LCD_Disp(' '); LCD_Disp(' '); LCD_Disp(' '); // (5)少し待つ Wait_10mS(100); // ******************* // 18F14K50 OK> 表示 // ******************* // (0)画面クリア LCD_CLR(); // (1)領域0を選択 Init_POS0(); // (2)表示 LCD_Disp('P'); LCD_Disp('I'); LCD_Disp('C'); LCD_Disp('1'); LCD_Disp('8'); LCD_Disp('F'); LCD_Disp('1'); LCD_Disp('4'); // // (3)領域1を選択 Init_POS1(); // (4)表示 LCD_Disp('K'); LCD_Disp('5'); LCD_Disp('0'); LCD_Disp(' '); LCD_Disp('O'); LCD_Disp('K'); LCD_Disp('>'); LCD_Disp(' '); // (5)少し待つ Wait_10mS(200); // ******************* // 画面クリア // ******************* // LCD_CLR(); } //****************************************************************************************** // Function name : LCD_SCR_DSPS // Title : スクロール表示（文字列） // Input : // Output : //****************************************************************************************** void LCD_SCR_DSPS(unsigned char in_str[], unsigned int int_time) { unsigned int lp=0; while(1){ lp=0; while( in_str[lp] != 0x00){ LCD_SCR_DSP(in_str[lp]); Wait_10mS(int_time); lp++; } } } //****************************************************************************************** // Function name : LCD_SCR_CLR // Title : スクロール表示（クリア） // Input : // Output : //****************************************************************************************** void LCD_SCR_CLR(void) { G_LCD_IDX = 0; LCD_CLR(); Init_POS0(); } //****************************************************************************************** // Function name : LCD_SCR_DSP // Title : スクロール表示（キャラクタ） // Input : // Output : //****************************************************************************************** void LCD_SCR_DSP(unsigned char in_char) { unsigned int lp; if(G_LCD_IDX < PI_LCD_bufsize){ if(G_LCD_IDX == 0) Init_POS0(); LCD_Disp(in_char); G_LCD_BUFL[G_LCD_IDX] = in_char; G_LCD_IDX++; }else if(G_LCD_IDX < (PI_LCD_bufsize * 2)){ if(G_LCD_IDX == PI_LCD_bufsize) Init_POS1(); LCD_Disp(in_char); G_LCD_BUFH[(G_LCD_IDX - PI_LCD_bufsize)] = in_char; G_LCD_IDX++; }else{ for(lp=0;lp<( PI_LCD_bufsize - 1);lp++){ G_LCD_BUFL[lp] = G_LCD_BUFL[lp+1]; } G_LCD_BUFL[( PI_LCD_bufsize - 1)] = G_LCD_BUFH[0]; for(lp=0;lp<( PI_LCD_bufsize - 1);lp++){ G_LCD_BUFH[lp] = G_LCD_BUFH[lp+1]; } G_LCD_BUFH[( PI_LCD_bufsize - 1)] = in_char; Init_POS0(); 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 : SendUART_s // Title : // Input : // Output : // Description : Write TXREG //****************************************************************************************** void SendUART_s(char *put_string) { while(*put_string!=0x00){ SendUART(*put_string); put_string++; } } //****************************************************************************************** // Function Name : InitUART // Title : // Input : // Output : // Description : Fosc:48MHz, Baud Rate:9600BPS, 16-bit Baud Rate //****************************************************************************************** void InitUART(void) { // ******************************************************* // 0.Define ANSELH(ANALOG SELECT REGISTER 2) // ANSELH(3) ANS11: RB5 Analog Select Control bit // 0 = Digital input buffer of RB5 is enabled // ******************************************************* ANSELH = ANSELH & 0b11110111; // ******************************************************* // 1.Define TXSTA(TRANSMIT STATUS AND CONTROL) Register // TXSTA(7) CSRC: Clock Source Select bit // Asynchronous mode:Don’t care // TXSTA(6) TX9: 9-bit Transmit Enable bit // 1 = Selects 9-bit transmission // 0 = Selects 8-bit transmission // TXSTA(5) TXEN: Transmit Enable bit(1) // 1 = Transmit enabled // 0 = Transmit disabled // TXSTA(4) SYNC: EUSART Mode Select bit // 1 = Synchronous mode // 0 = Asynchronous mode // TXSTA(3) SENDB: Send Break Character bit // Asynchronous mode: // 1 = Send Sync Break on next transmission (cleared by hardware upon completion) // 0 = Sync Break transmission completed // TXSTA(2) BRGH: High Baud Rate Select bit // Asynchronous mode: // 1 = High speed // 0 = Low speed // TXSTA(1) TRMT: Transmit Shift Register Status bit // 1 = TSR empty // 0 = TSR full // TXSTA(0) TX9D: Ninth bit of Transmit Data // Can be address/data bit or a parity bit. // ******************************************************* TXSTA = 0b00100100; // ******************************************************* // 2.Define RCSTA(RECEIVE STATUS AND CONTROL) Register // RCSTA(7) SPEN: Serial Port Enable bit // 1 = Serial port enabled (configures RX/DT and TX/CK pins as serial port pins) // 0 = Serial port disabled (held in Reset) // RCSTA(6) RX9: 9-bit Receive Enable bit // 1 = Selects 9-bit reception // 0 = Selects 8-bit reception // RCSTA(5) SREN: Single Receive Enable bit // Asynchronous mode: // Don’t care // RCSTA(4) CREN: Continuous Receive Enable bit // Asynchronous mode: // 1 = Enables receiver // 0 = Disables receiver // RCSTA(3) ADDEN: Address Detect Enable bit // Asynchronous mode 9-bit (RX9 = 1): // 1 = Enables address detection, enable interrupt and load the receive buffer when RSR<8> is set // 0 = Disables address detection, all bytes are received and ninth bit can be used as parity bit // Asynchronous mode 8-bit (RX9 = 0): // Don’t care // RCSTA(2) FERR: Framing Error bit // 1 = Framing error (can be updated by reading RCREG register and receive next valid byte) // 0 = No framing error // RCSTA(1) OERR: Overrun Error bit // 1 = Overrun error (can be cleared by clearing bit CREN) // 0 = No overrun error // RCSTA(0) RX9D: Ninth bit of Received Data // This can be address/data bit or a parity bit and must be calculated by user firmware. // ******************************************************* RCSTA=0b10010000; // ******************************************************* // 3.Define BAUDCON(BAUD RATE CONTROL) Register // BAUDCON(7) ABDOVF: Auto-Baud Detect Overflow bit // Asynchronous mode: // 1 = Auto-baud timer overflowed // 0 = Auto-baud timer did not overflow // BAUDCON(6) RCIDL: Receive Idle Flag bit // Asynchronous mode: // 1 = Receiver is Idle // 0 = Start bit has been detected and the receiver is active // BAUDCON(5) DTRXP: Data/Receive Polarity Select bit // Asynchronous mode: // 1 = Receive data (RX) is inverted (active-low) // 0 = Receive data (RX) is not inverted (active-high) // BAUDCON(4) CKTXP: Clock/Transmit Polarity Select bit // Asynchronous mode: // 1 = Idle state for transmit (TX) is low // 0 = Idle state for transmit (TX) is high // BAUDCON(3) BRG16: 16-bit Baud Rate Generator bit // 1 = 16-bit Baud Rate Generator is used (SPBRGH:SPBRG) // 0 = 8-bit Baud Rate Generator is used (SPBRG) // BAUDCON(2) Unimplemented: Read as ‘0’ // BAUDCON(1) WUE: Wake-up Enable bit // Asynchronous mode: // 1 = Receiver is waiting for a falling edge. No character will be received but RCIF will be set on // the falling edge. WUE will automatically clear on the rising edge. // 0 = Receiver is operating normally // BAUDCON(0) ABDEN: Auto-Baud Detect Enable bit // Asynchronous mode: // 1 = Auto-Baud Detect mode is enabled (clears when auto-baud is complete) // 0 = Auto-Baud Detect mode is disabled // ******************************************************* BAUDCON = 0b00001000; // ******************************************************* // 3.Define BRG(EUSART Baud Rate Generator Register) Register // ******************************************************* // BRG = 48000000(Hz)/4/9600(BPS)-1 ==> 0d1249 ==> 0x4E1 // (1)Define SPBRGH(EUSART Baud Rate Generator Register, High Byte) Register SPBRGH = 0x4; // (2)Define SPBRG(EUSART Baud Rate Generator Register, Low Byte) Register SPBRG = 0xE1; } //****************************************************************************************** // Function Name : SendUART // Title : // Input : // Output : // Description : Write TXREG //****************************************************************************************** void SendUART(char put_data) { char chk_flg; // *************************** // 1.Check Send Flag // *************************** while(1){ chk_flg = TXSTA & 0x02; //0000,0010 TXSTA(TRMT) if(chk_flg != 0x00)break; } // *************************** // 2.Set data // *************************** TXREG = put_data; } //****************************************************************************************** // Function Name : ReciveUART // Title : // Input : // Output : // Description : Read RCREG //****************************************************************************************** void ReciveUART(char *get_data) { char chk_flg; // **************************** // 1.Check Recvive Flag // **************************** while(1){ chk_flg = PIR1 & 0x20; //0010,0000 PIR1(RCIF) if(chk_flg != 0x00)break; } // **************************** // 2.Check error // **************************** chk_flg = RCSTA & 0x06; //0000,0110 RCSTA(FERR,OERR) if(chk_flg != 0x00){ *get_data = 0x00; return; } // **************************** // 3.Set Recive Data // **************************** *get_data = RCREG; }