AVR Freaks

here is the code:

automatic code generated by CVAVR 

i changed if else as my design

// USART Receiver interrupt service routine
interrupt [USART_RXC] void usart_rx_isr(void)
{
char status;
char data;

status=UCSR0A;
data=UDR0;

if (status & 0x10) // framing error
bReset = 1;
else
ucData[ucIndex++] = data;
}

// USART Receiver interrupt service routine
interrupt [USART_RXC] void usart_rx_isr(void)
{
    char status;
    char data;
    
    status=UCSR0A;
    data=UDR0;
    
    if (status & 0x10) // framing error
        bReset = 1;
    else
        ucData[ucIndex++] = data;
}

i need my code ignore reset pulse, just buffer input data

for normal data it works nice, every data is correct
but can not handle reset pulse, cause Frame Error not work, 

and interprete reset pulse as 2 data : 00, E0 and puts in buffer by mistake,

hmm , yes its possible,

for now just simulating is available for me, for test on real IC i must wait a few days 

#include <mega328p.h>

bit bReset;
unsigned char ucData[256];
unsigned char ucIndex, ucWriteIndex;

// USART Receiver interrupt service routine
interrupt [USART_RXC] void usart_rx_isr(void)
{
    char status;
    char data;
    
    status=UCSR0A;
    data=UDR0;
    
    if (status & 0x10) // framing error
        bReset = 1;
    else
        ucData[ucIndex++] = data;
}

#include <stdio.h>

void main(void)
{
// Crystal Oscillator division factor: 1
#pragma optsize-
CLKPR=0x80;
CLKPR=0x00;
#ifdef _OPTIMIZE_SIZE_
#pragma optsize+
#endif

// Input/Output Ports initialization
// Port B initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 
PORTB=0x00;
DDRB=0x00;

// Port C initialization
// Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 
// State6=T State5=T State4=T State3=T State2=T State1=T State0=T 
PORTC=0x00;
DDRC=0x00;

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

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=FFh
// OC0A output: Disconnected
// OC0B output: Disconnected
TCCR0A=0x00;
TCCR0B=0x00;
TCNT0=0x00;
OCR0A=0x00;
OCR0B=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer1 Stopped
// Mode: Normal top=FFFFh
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;

// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer2 Stopped
// Mode: Normal top=FFh
// OC2A output: Disconnected
// OC2B output: Disconnected
ASSR=0x00;
TCCR2A=0x00;
TCCR2B=0x00;
TCNT2=0x00;
OCR2A=0x00;
OCR2B=0x00;

// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
// Interrupt on any change on pins PCINT0-7: Off
// Interrupt on any change on pins PCINT8-14: Off
// Interrupt on any change on pins PCINT16-23: Off
EICRA=0x00;
EIMSK=0x00;
PCICR=0x00;

// Timer/Counter 0 Interrupt(s) initialization
TIMSK0=0x00;
// Timer/Counter 1 Interrupt(s) initialization
TIMSK1=0x00;
// Timer/Counter 2 Interrupt(s) initialization
TIMSK2=0x00;

// USART initialization
// Communication Parameters: 8 Data, 1 Stop, No Parity
// USART Receiver: On
// USART Transmitter: On
// USART0 Mode: Asynchronous
// USART Baud Rate: 250000
UCSR0A=0x00;
UCSR0B=0x98;
UCSR0C=0x06;
UBRR0H=0x00;
UBRR0L=0x03;

// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
ADCSRB=0x00;

// Global enable interrupts
#asm("sei")

    bReset = 0;
    ucIndex = 0;
    ucWriteIndex = 0;
    
    while (1)
    {
        if (ucWriteIndex != ucIndex)
        {
            putchar(ucData[ucWriteIndex++]);
        }
        
        if (bReset)
        {
            ucWriteIndex = ucIndex;
            bReset = 0;
        }
    }
}

code is auto generated by CVAVR

I added if else 

it works nice for normal data

yes, I exactly want to deploy FE to detect break,

I got reply from support team,
they have fixed the problem and sent new dll for avr model
my project works fine with new model

problem solved !

yes as I mentioned before , I tested on real chip.

project works fine on real chip.

nothing wrong with avr and my code.

the other possibilities were:

1. problem in AVR model on Proteus 

2. user problem (me!) in using Proteus

they sent me new AVR2.DLL file , so problem established and fixed , it was Proteus model.

now my code works fıne on both simulated model on Proteus and real chip of ATmega88 and ATmega328P