Proteus CodeVision problem?

[Gigica]

#asm(sei)

Hi, I have a problem with Proteus simulating LCD with c code compiled with CodeVision. Here is schematic and c code .

/*****************************************************
This program was produced by the
CodeWizardAVR V1.25.3 Professional
Automatic Program Generator
© Copyright 1998-2007 Pavel Haiduc, HP InfoTech s.r.l.
[url]http://www.hpinfotech.com[/url]


Chip type           : AT90S2313
Clock frequency     : 8.000000 MHz
Memory model        : Tiny
External SRAM size  : 0
Data Stack size     : 32
*****************************************************/

#include <90s2313.h>
#include <delay.h> 


void clearDisplay()
{
PORTB=0x08;
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=0;
PORTB=0x18;
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=PORTB&0xf7;
delay_ms(5);
}

void entryModeSet(char inc_dec,char shift_normal)
{PORTB=0x08;
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=0;
PORTB=0x48|(inc_dec<<5)|(shift_normal<<4);
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=PORTB&0xf7;
delay_us(40);
}

void displayOnOff(char display_on,char cursor_on,char blink_on)
{PORTB=0x08;
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=0;
PORTB=0x88|(display_on<<6)|(cursor_on<<5)|(blink_on<<4);
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=PORTB&0xf7;
delay_us(40);
} 

void cursorOrDisplayShift(char displayShift_cursorShift,char right_left)
{PORTB=0x18;
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=PORTB&0xf7;
PORTB=0x08|(displayShift_cursorShift<<7)|(right_left<<6);
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=PORTB&0xf7;
delay_us(40);
}

void functionSet(char data_length,char one_two_rows,char dimension_char)
{PORTB=0x28|(data_length<<4);
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=PORTB&0xf7;
PORTB=0x08|(one_two_rows<<7)|(dimension_char<<6);
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=PORTB&0xf7;
delay_us(40); 
}



void setDDRAMaddress(char address)
{PORTB=(0x88|address)&0xfd;
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=PORTB&0xf7;
PORTB=0x08|(address<<4);
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=PORTB&0xf7;
delay_us(40);
}

void writeData(char data)
{PORTB=0x0a|data;
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=PORTB&0xf7;
PORTB=0x0a|(data<<4);
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=PORTB&0xf7;
delay_us(40);
}

initLCD()
{delay_ms(15);
PORTB=0x38;
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=0;
delay_ms(5);
PORTB=0x38;
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=0;
delay_us(160);
PORTB=0x38;
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=0;
delay_us(160);
PORTB=0x28;
#asm("cli")
delay_us(1);
#asm("sei")
PORTB=0; 
delay_us(160);
//functionSet(0,1,0); 
functionSet(0,1,0); 
delay_ms(1);
displayOnOff(0,0,0);
delay_us(160);
displayOnOff(1,1,0);
delay_us(160);
entryModeSet(1,0);
delay_us(160);

}

void printMessage(flash char*message)
{while(*message)writeData(*message++);}
// Declare your global variables here


                                      
void main(void)
{ 
// Port B initialization
// Func0=Out Func1=Out Func2=Out Func3=Out Func4=Out Func5=Out Func6=Out Func7=Out 
// State0=0 State1=0 State2=0 State3=0 State4=0 State5=0 State6=0 State7=0 
DDRB=0xff;
PORTB=0xff;

// Port D initialization
// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In 
// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T
DDRD=0x00; 
PORTD=0x00;

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: 7.813 kHz
TCCR0=0x00;
TCNT0=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer 1 Stopped
// Mode: Normal top=FFFFh
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;


// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
GIMSK=0x00;
MCUCR=0x00;

// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x00;


// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
// Analog Comparator Output: Off
ACSR=0x80;
// Global enable interrupts 
initLCD(); 
 
while (1)
{
 clearDisplay();
 printMessage("first row");
 delay_ms(1500);
 setDDRAMaddress(0x40);
 printMessage("second row");
 delay_ms(1500);    
}  
}

I have used AT90S2313 in this example .

The point is that this works in reality (with different AVR-s) but not in Proteus .

link for shematic

 

[wahabmalik]

delay_ms codevision example

Proteus is not 100% reliable. I do have similar problem with external interrupt (logic change mode/ATMega16). My code works fine in actual but didn't work on Proteus.

 

[svicent]

problem with data types in codevisionavr

CodeVision has library functions to facilitate the handling of LCD modules built with the Hitachi HD44780 chip or equivalent, why not use it?

 

[Iain]

codewizardavr v1.25.3 professional

Possibly this is a sync issue with 4-bit mode.

As I understand it, when initialising the LCD to be 4-bit mode the LCD is actually in 8-bit mode. This, in turn means that you should not poll for a busy signal here but rather implement a manual delay.

Following that instruction, the LCD state is settled and all writes/ reads should be nibble wide.

I know that most times in hardware an 'incorrect' firmware implementation will work this will be dependant on clock speed.

A 'C' implementation of 4-bit mode can be found in the ../Samples/ directory of the Proteus installation.


Iain.

 

[Gigica]

Re: codewizardavr v1.25.3 professional

In the meantime I use lcd.h library included in CodeVision with LCD connections as required and have no problems nither with Proteus simulation nor in reality

 

[nandhu015]

Normally proteus will work well with lcd's. Im using proteus for long time.

The problem seems to be delays you have given init_lcd routine

Refer the datasheet for proper delays