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发表于 2011-8-28 04:54:27
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my code, following the same line:
=======lcd_hw.c================
#include <htc.h> //we use picc
#include "lcd_hw.h" //we use onboard hardware lcd
//global variable
//initialize the lcd
void lcd_init(void) {
//set up lcdcon
LCDEN = 0; //turn off the lcd
SLPEN = 1; //no lcd drive in sleep mode
VLCDEN = 1; //enable lcd bias voltage
CS1=0, CS0=0; //0b00 -> Fosc / 8192. 0b01 = Timer1/32, 0b1x = LFINTOSC(31khz)/32
LMUX1=(LCD_COM & LCD_COM2) >> 1;
LMUX0=(LCD_COM & LCD_COM1); //0b00 -> static(COM0); 0b01 -> 1/2 (COM0..1); 0b10 -> 1/3 (COM0..2); 0b11 -> 1/4 (COM0..3)
//set up lcdps
WFT = 0; //1=wave form change on the boundary, 0=in between
switch (LCD_COM) {
case LCD_COM0: BIASMD = 0; break; //has to be set to 0
case LCD_COM1: BIASMD = 1; break; //1=1/2 bias. 0=1/3 bias
case LCD_COM2: BIASMD = 0; break; //1=1/3 bias. 0=1/2 bias
case LCD_COM3: BIASMD = 0; break; //has to be set to 0
}
//LCDA=1, WA=1; //set the status bits
//set up the prescaler
LP3=(LCD_PS & 0x08) >> 3;
LP2=(LCD_PS & 0x04) >> 2;
LP1=(LCD_PS & 0x02) >> 1;
LP0=(LCD_PS & 0x01) >> 0; //lcd prescaler. 1:1(0b0000) -> 16:1 (0b1111)
//enable the segments - need customization
LCDSE0 = 0xff; //enable lcd0..7
LCDSE1 = 0xff; //enable lcd8..15
LCDSE2 = 0xff; //enable lcd16..23
//LCDSE3 = 0xff; //enable lcd24..31
//LCDSE4 = 0xff; //enable lcd32..39
//LCDSE5 = 0xff; //enable lcd40..47
//enable the output - set by lcdsex automatically
//TRISA = 0x00; //porta as output
//TRISB = 0x00; //portb as output
//TRISC = 0x00; //portc as output
//TRISD = 0x00; //portd as output
//TRISE = 0x00; //porte as output
LCDEN = 1; //enable the lcd
}
//display data on lcd
void lcd_display(unsigned char * vRAM) {
unsigned char index;
const unsigned char _7seg_font[]={
0x3f, //'0'
0x06, //'1'
0x5b, //'2'
0x4f, //'3'
0x66, //'4'
0x6d, //'5'
0x7d, //'6'
0x07, //'7'
0x7f, //'8'
0x6f, //'9'
0x77, //'A'
0x7c, //'b'
0x39, //'C'
0x5e, //'d'
0x79, //'E'
0x71, //'F'
0x40}; //' '
//set up the data - will need triming
//vRAM[] is numerical
LCDDATA0 = _7seg_font[vRAM[0]];
LCDDATA1 = _7seg_font[vRAM[1]];
LCDDATA2 = _7seg_font[vRAM[2]];
LCDDATA3 = _7seg_font[vRAM[3]];
LCDDATA4 = _7seg_font[vRAM[4]];
LCDDATA5 = _7seg_font[vRAM[5]];
LCDDATA6 = _7seg_font[vRAM[6]];
LCDDATA7 = _7seg_font[vRAM[7]];
LCDDATA8 = _7seg_font[vRAM[8]];
LCDDATA9 = _7seg_font[vRAM[9]];
LCDDATA10 = _7seg_font[vRAM[10]];
LCDDATA11 = _7seg_font[vRAM[11]];
} |
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