Help me about problem of LCD on ISIS Simulation

[ttlg59]

Hello everyone!
I have a problem with MikroC for AVR when i write code for LCD. Although it's compiled successful, but when i run simulation on ISIS, it notice error "[HD44780] Controller received data whilst busy" , LCD white screen and not display text i printed.

Code: Select all

sbit LCD_RS at PORTC2_bit;
sbit LCD_EN at PORTC3_bit;
sbit LCD_D7 at PORTC4_bit;
sbit LCD_D6 at PORTC5_bit;
sbit LCD_D5 at PORTC6_bit;
sbit LCD_D4 at PORTC7_bit;
sbit LCD_RS_Direction at DDC2_bit;
sbit LCD_EN_Direction at DDC3_bit;
sbit LCD_D7_Direction at DDC4_bit;
sbit LCD_D6_Direction at DDC5_bit;
sbit LCD_D5_Direction at DDC6_bit;
sbit LCD_D4_Direction at DDC7_bit;

void main() {
      Lcd_Init();
      Lcd_Cmd(_LCD_CLEAR);
      Lcd_Cmd(_LCD_CURSOR_OFF);
      Delay_ms(500);
      UART1_Init(9600);
      Delay_ms(100);
      Lcd_Out(1,1,"UART TEST");
      while (1) { 
            Lcd_Chr(2,1,"DISPLAY TEST");
            Delay_ms(1000);
      }
}

Please help me! Thank you!

[biljana.nedeljkovic]

Hello,

I suggest to try to program your code on the hardware, I have tested it on EasyAVR v7 without problem. Make sure you initialize LCD correctly, and check the example code written for UART written in the compiler.

Make sure to have enough delay to avoid signals' interference.

Best regards,
Biljana