help to change portd to portb

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dodo_ur_4u

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please help;i' trying to connect lcd in 4 bits mode on portb only and leave portb.0 empty because i need it for interrupt so i tried to modify file lcd.c
as follow

void
lcd_write(unsigned char c)
{
__delay_us(40);

PORTB = ( c & 0xF0 );
LCD_STROBE();
PORTB = ( ( c << 4 ) & 0xF0 );

LCD_STROBE();
}

but no output!!!!!!!!!!!!!!!!!!!!
 

Check input/output configuration of pins in PORTB, also check you have correctly connected 4 data lines and RS,RW,E lines to LCD.
 

i have tried every thing possible because i'm using program for simulating " Real pic simualtor", it workes for the first connection but didn't work for my program

i want to ask you if you talk about Mikroc or hi-tech? because i use both for programming
 

Hi,

Whatever the compiler check-list in previous post is valid.
If you can, slow down the simulating speed and check whether 4-data lines, RS, RW & E lines output (high or low) correctly.
At the same time you can observe value in PORTB register and register relevant to RS,RW,E lines change accordingly.
 

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