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I am getting a problem while burning the code in LPC2148 interfacing with GLCD. Flash Magic is showing an error- failed to autobaud. I want to know if we can directly connect GPIO pins of LPC2148 to 8 pin data bus of 128*64 GLCD???? Please reply immediately or as soon as possible...... I have to summit my project within a week.
I have connected PO.0 - P0.7 of LPC2148 to 8 pin data bus of GLCD and RS, RW, EN, CS1, CS2 to P1.16 - P1.20 respectively of LPC2148.
The code we are using.... #include <LPC214X.H>
#include "font.h"
unsigned char c; unsigned char z=0;
void ctrloff() {
IOSET1=0x00000000; //rs=rw=en=cs1=cs2=0; }
//DELAY FUNCTION void delay(unsigned int j) { int k; for(k=0;k<=j;k++) { long i; for(i=0;i<90000;i++); } }
void displayon() { ctrloff(); IOSET0=0x0000003F; IOSET1=0x001C0000; delay(5); IOSET0=0x0000003F; IOSET1=0x000C0000; }
void displayoff() { ctrloff(); IOSET0=0x0000003E; IOSET1=0x001C0000; delay(5); IOSET0=0x0000003E; IOSET1=0x000C0000; }
void setcolumn(unsigned char y) { if(y<64) { ctrloff(); c=y; IOSET0=0x00000040 |(y&63); //0x40 represents Column 0 IOSET1=0x00140000; delay(5); IOSET0=0x00000040 |(y&63); IOSET1=0x00040000; } else { ctrloff(); c=y; IOSET0=0x00000040|((y-64)&63); //0x40 represents Column 0 IOSET1=0x00180000; delay(5); IOSET0=0x00000040|((y-64)&63); IOSET1=0X00080000; } }
void setpage(unsigned char x) { ctrloff(); IOSET0=0x000000B8|x; //0xb8 represents Page 0 IOSET0=0x001C0000; delay(5); IOSET0=0x000000B8|x; //0xb8 represents Page 0 IOSET1=0x000C0000; }
//Function to Scroll Strings void setstartline(unsigned char z) { ctrloff(); IOSET0=0x000000C0|z; //0xc0 represents Line 0 IOSET1=0x001C0000; delay(5); IOSET0=0x000000C0|z; //0xc0 represents Line 0 IOSET1=0x000C0000; }
void lcddata(unsigned char *value,unsigned int limit) { unsigned int i; for(i=0;i<limit;i++) { if(c<64) { IOSET0=value[i]; IOSET1=0x00150000; delay(5); IOSET0=value[i]; IOSET1=0x00050000; c++; } else { setcolumn(c); IOSET0=value[i]; IOSET1=0x00160000; delay(5); IOSET0=value[i]; IOSET1=0x00060000; c++; } if(c>127) return; } }
void lcdputs(unsigned char y,unsigned char x,unsigned char *str) { unsigned char i; unsigned int a; setcolumn(y); setpage(x); for(i=0;str[i]!=0;i++) { a=(*(str+i)-32); a*=5; lcddata(&font5x7[a],5); } }
void clrlcd() { unsigned char i,j; for (i=0;i < 8;i++) { setpage(i); setcolumn(0); for (j= 0 ;j < 128; j++) lcddata(&z,1); } }
unsigned char ar0[]="*************** "; unsigned char ar1[]="MINOR PROJECT"; unsigned char ar2[]="ELECTRONICS AND COMMUNICATION "; unsigned char ar3[]="************** ";
int main() { IODIR1=0xffffffff; IOCLR1=0xffffffff; IODIR0=0xffffffff; IOCLR0=0xffffffff; { unsigned char i; clrlcd(); displayon(); setcolumn(0); setpage(0); lcdputs(0,1,ar0); lcdputs(0,2,ar1); lcdputs(0,3,ar2); lcdputs(0,4,ar3); delay(65); delay(65);
for(i=0;i<5;i++) { displayoff(); delay(65); displayon(); delay(65); delay(65); } i=0; while(1) { setstartline(i++); //Function to Scroll Strings delay(40); } } }