Problems with LCD driver by PIC 16F628.

[Boon]

I have problems with LCD driver. I use PIC 16F628. input data from scan barcode . How can i do?

[jds-pic]

[Boon]

Thanks for the suggestion. However, I want to also example by PIC C . Help me please.

[jds-pic]

[Boon]

normally i use 16F877. i will change to 16F628 . it's error when compile. i want to known . what wrong? this my code
+++++++++++++++++++++++++++++++++++++++++
#include<16f877.h>
#fuses HS,NOPROTECT,NOWDT,NOLVP
#use delay(clock=20000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)
#include <lcd.c>

int i,value,min,max,j=0,k=0;
char msg1[5]="HELP",msg2[7]="NORMAL",msg3[5]="STOP",msg4[10]="NO_LOAD",msg5[]="OVER_LOAD";

void main(void) // Begin Program
{



printf("Sampling:");

setup_port_a( ALL_ANALOG );
setup_adc( ADC_CLOCK_INTERNAL );
set_adc_channel( 0 );

do {

min=255;
max=0;
for(i=0;i<=30;++i)
{
delay_ms(10);
value = Read_ADC();
if(value<min)
min=value;
if(value>max)
max=value;

}

if (min<0x35) //**********NO_LOAD******************************************

{
j=j+1 ;
lcd_init() ;
lcd_getc(7,1) ;
printf(lcd_putc,msg1); // Output LCD HELP
lcd_getc(5,2) ;
printf(lcd_putc,msg4); // Output LCD NO_LOAD
delay_ms(1000);
printf(lcd_putc,"\f"); // Clear LCD


if (j >= 10 )
{
output_b(0x02);
lcd_getc(7,1) ;
printf(lcd_putc,msg3); // Output LCD STOP
lcd_getc(5,2) ;
printf(lcd_putc,msg4); // Output LCD NO_LOAD
break;
}
} //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
if (min>0x9a) //***********OVER_LOAD****************************************

{
j=j+1 ;
lcd_init() ;
lcd_getc(7,1) ;
printf(lcd_putc,msg1); // Output LCD HELP
lcd_getc(4,2) ;
printf(lcd_putc,msg5); // Output LCD OVER_LOAD
delay_ms(1000);
printf(lcd_putc,"\f"); // Clear LCD


if (j >= 10 )
{
output_b(0x02);
lcd_getc(7,1) ;
printf(lcd_putc,msg3); // Output LCD STOP
lcd_getc(4,2) ;
printf(lcd_putc,msg5); // Output LCD OVER_LOAD
break;

} //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*


}
else

{
if ((min>0x35)&&(min<0x9a)) //***** Reset j value****
{
k=k+1;
{
lcd_init() ;
lcd_getc(k,1) ;
printf(lcd_putc,msg2); // Output LCD NOMAL
lcd_getc(k,2) ;
printf(lcd_putc,msg2); // Output LCD NOMAL
delay_ms(1000);
printf(lcd_putc,"\f"); // Clear LCD

j=0;
if (k>16)
k=0;
}
}
}


printf("\n\rMin: %2X Max: %2X j: %2d k: %2d\r\n ",min,max,j,k);

}while (TRUE);
} // End Program ********************************************************

[jds-pic]

[Boon]

Error message is
1: Use parameter value is out of range Not a number :PIN_C6
2: Undefined identifier

One error message i understand i change port_c is port_b . When compile it's show lcd.c page and error second message. I don't understand.What happen?

[dyeatman]

The code compiles fine for the 16F877 but will not compile for the 16F628 because you are trying to use analog channels it does not have.....

This chip will not work for what you want....

[Boon]

Thank you .Yes,i know. this code for example . if i don't use analog channels .I want to know if i will use 16F628 for drive LCD. i will use LCD for show data. how i can do? i need help! please.....

[Guest]

Look at the data sheet for the 16F628 - there are differences when compared to the 16F877.

You should be showing us the code you have when trying to compile for the 16F628. Get rid of the analog stuff, get rid of the #use rs232 line because the 16F628 uses pins RB2 for transmit and RB1 for receive, and you need to use port b for the lcd.

[Boon]

I'm thank you Jds-pic, Dyeatman and Guest very much for the suggestion. Now i can use pic 16f628 with lcd . thank you very much