Picproje Elektronik Sitesi

#include <16LF1937.H>
#fuses INTRC_IO, NOWDT, BORV19, NOPUT, PLL_SW
#use delay(clock=32M)

// The LCD digits are numbered in the following way, 
// according to the Varitronix VIM-332-DP data sheet.
//            _    _    _
//        |  |_|  |_|  |_|
//        |  |_|  |_|  |_|
//                    
// Digit  4  3    2    1
//

// The CCS lcd_symbol() function will be used to display digits
// 1, 2, and 3. The following define statements tell the
// lcd_symbol() function which PIC pins are connected to the
// LCD segment pins.
// The connection data was derived from the Microchip file,
// seven_seg.h, which is in the sample code for the F1 board
// on the Microchip website.
//
// Digit segments  A        B        C        D        E        F        G        DP
//                b7      b6      b5      b4      b3      b2      b1      b0
#define DIGIT3  COM0+2,  COM0+4,  COM2+4,  COM3+2,  COM2+2,  COM1+2,  COM1+4,  COM3+1
#define DIGIT2  COM0+5,  COM0+10, COM2+10, COM3+5,  COM2+5,  COM1+5,  COM1+10, COM3+4
#define DIGIT1  COM0+12, COM0+16, COM2+16, COM3+12, COM2+12, COM1+12, COM1+16, COM3+10

// The following array tells the CCS lcd_symbol() function which
// segments to turn on, to display the numbers from 0 to 9.
//                            0    1    2    3    4    5    6    7    8    9
byte const Digit_Map[11] = {0xFC,0x60,0xDA,0xF2,0x66,0xB6,0xBE,0xE0,0xFE,0xE6,0xFF};


#define BLANK 0  // For a blank digit, don't turn on any segments.

#byte LCDDATA6 = 0x7A6
#bit  seg_4bc = LCDDATA6.1  // Controls left-most digit ("1")

int8 lcd_pos; 

//-----------------------------------------------
void lcd_putc(char c)
{
int8 segments;

if(c == '\f')
  {
  lcd_pos = 0;
  }
else
  {
  if((c >= '0') && (c <= '9'))
      segments = Digit_Map[c - '0'];
  else
      segments = BLANK;

  switch(lcd_pos)
    {
      case 1:          // 1000's digit (left-most digit on lcd)
        if(c == '1')        // Is the top digit = 1 ?
          seg_4bc = 1;    // If so, display it
        else                // If it's not = 1, don't display it.
          seg_4bc = 0;  
        break;
  
      case 2: lcd_symbol(segments, DIGIT3); break; // 100's digit
      case 3: lcd_symbol(segments, DIGIT2); break; // 10's digit
      case 4: lcd_symbol(segments, DIGIT1); break; // 1's digit
    }
  }

lcd_pos++;
}


//---------------------------
void clear_lcd(void)
{

#byte LCDDATA0 = 0x7A0;
#byte LCDDATA1 = 0x7A1;
#byte LCDDATA2 = 0x7A2;
#byte LCDDATA3 = 0x7A3;
#byte LCDDATA4 = 0x7A4;
#byte LCDDATA5 = 0x7A5;
#byte LCDDATA6 = 0x7A6;
#byte LCDDATA7 = 0x7A7;
#byte LCDDATA8 = 0x7A8;
#byte LCDDATA9 = 0x7A9;
#byte LCDDATA10 = 0x7AA;
#byte LCDDATA11 = 0x7AB;

LCDDATA0 = 0;
LCDDATA1 = 0;
LCDDATA2 = 0;
LCDDATA3 = 0;
LCDDATA4 = 0;
LCDDATA5 = 0;
LCDDATA6 = 0;
LCDDATA7 = 0;
LCDDATA8 = 0;
LCDDATA9 = 0;
LCDDATA10 = 0;
LCDDATA11 = 0;
}



//===================================
void main()
{
int16 number;

setup_adc_ports(NO_ANALOGS); // This fixes a bug in CCS start-up code

setup_oscillator(OSC_INTRC | OSC_PLL_ON | OSC_8MHZ);

setup_timer_1(T1_EXTERNAL_SYNC | T1_ENABLE_T1OSC  | T1_DIV_BY_1);
//delay_ms(5000);  // What is the start-up delay time for T1OSC ?

clear_lcd();

// Setup for a 1:4 mux LCD and enable 10 specific segment pins.
setup_lcd(LCD_TYPE_B | LCD_MUX14 | LCD_BIAS13 | LCD_REF_ENABLED
          | LCD_B_HIGH_POWER | LCD_TIMER1,
          0, 0x131437);

lcd_contrast(7);

number = 1876;


printf(lcd_putc,"\f%4lu",number);  // Always send 4 digits

while(1);
} 

#include <16LF1937.H>
#fuses INTRC_IO, NOWDT, BORV19, NOPUT, PLL_SW
#use delay(clock=32M)

#byte LCDPS = 0x792
#bit WFT = LCDPS.7

struct
{
int8 LP : 4;
int8 WA : 1;
int8 LCDA: 1;
int8 BIASMD: 1;
int8 WFT: 1;
}LCDPSbits;
#locate LCDPSbits = LCDPS

#byte T1CON = 0x18
#bit T1OSCEN=T1CON.3

#byte LCDSE0 = 0x798
#byte LCDSE1 = 0x799
#byte LCDSE2 = 0x79A

//-------------------------------------
void lcd_init(void)
{

    // Configure LCDPS
    // Wave form type A or B
    // Bias Mode
    // Prescaler
    // 1:16 - 1:1
    LCDPS = 0;
    WFT = 1;        // B type
    LCDPSbits.LP = 0;

    T1OSCEN = 1;    // activate the 32khz oscillator for our clock source

    /**********************************************/

    /* User is responsible to enable the needed segments   */

    /* Replace the code in the next 3 lines for your glass */

    /******************************************/
    LCDSE0 = 0x37;
    LCDSE1 = 0x14;
    LCDSE2 = 0x13;
.
.
.
// etc.
}

//==========================
void main()
{
lcd_init(); 

while(1);
}