[PIC] lcd problem(mb162abc)

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polinde

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Hi
iam using pic16f877a with lcd (lmb162abc) and write small programme to test the lcd but not work i test this programme and this connection on proteus simulator and work fine but not work in real circuit
i use 10Mhz crystal and use 4bit connection

this is my code 
Code C - [expand]
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sbit LCD_RS at RD2_bit;
sbit LCD_EN at RD3_bit;
sbit LCD_D4 at RD4_bit;
sbit LCD_D5 at RD5_bit;
sbit LCD_D6 at RD6_bit;
sbit LCD_D7 at RD7_bit;
sbit LCD_RS_Direction at TRISD2_bit;
sbit LCD_EN_Direction at TRISD3_bit;
sbit LCD_D4_Direction at TRISD4_bit;
sbit LCD_D5_Direction at TRISD5_bit;
sbit LCD_D6_Direction at TRISD6_bit;
sbit LCD_D7_Direction at TRISD7_bit;
 
 void main()
 {
   TRISD = 0;
    PORTD = 0xFF;
    TRISD = 0xff;
 
         LCD_Init();       
 
        LCD_Cmd(_LCD_CLEAR);       // Clear display
        LCD_Cmd(_LCD_CURSOR_OFF);  // Turn cursor off
        while(1)
        {
 Lcd_out(1,1,"hello") ;
 
        }
}

please help me
 
Last edited by a moderator:

I think you need to provide more detail. Are these calls 'LCD_Init', 'LCD_Cmd', and 'Lcd_out' functions you created, or do they come with some library? It looks like you are setting all the port D pins as inputs, so that won't work (unless those other functions are changing this). Is there a schematic?
 

As PORTD is used for LCD remove the below mentioned two lines from the code.

Code C - [expand]
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PORTD = 0xFF;
    TRISD = 0xff;
 

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