Re: [avr-gcc-list] Problem with UART1 for Atmega128...

[Marc Wetzel]

The following code works fine for me...

void InitUarts(void) {

    // MOBILE
    outp(0, UBRR0H);
    outp((u_char)((u_long)cpu_clock/8736L/16L)-1,
UBRR0L);

    outp((1<<RXEN) | (1<<TXEN), UCSR0B);
    outp((1<<UPM1)|(3<<UCSZ0),UCSR0C);
    while ( !( inp(UCSR0A) & (1<<UDRE)) );
   

    // SIM
    outp(0, UBRR1H);
    outp((u_char)((u_long)cpu_clock/8736L/16L)-1,
UBRR1L);
    
    outp((1<<RXEN) | (1<<TXEN), UCSR1B);
    outp((1<<UPM1)|(3<<UCSZ0),UCSR1C);
    while ( !( inp(UCSR1A) & (1<<UDRE))
);

    NutRegisterInterrupt(IRQ_UART_RX0, RxComplete0,
0);
    NutRegisterInterrupt(IRQ_UART_RX1, RxComplete1,
0);
    
    outp(BV(RXCIE)| BV(RXEN) | BV(TXEN), UCSR0B);
    outp(BV(RXCIE)| BV(RXEN) | BV(TXEN), UCSR1B);
}



At 15:25 24.04.2002 +0200, =?iso-8859-2?Q?S=B3awomir_Kawa=B3ek?=
wrote:
> Hello!
>
>  
>
> I have problem with UART1 for atmega128.
>
>  
>
> Does anybody use successfuly UART1 for atmega128 with
> interrupts???
>
>  
>
> My UART 0 works fine, but.... UART 1 works in strange way.
>
> I have tested it on device and on the simulator.
>
>  
>
> Probably there is some problem durring initialization.
>
>
>
> The best will be help with some examples.
>
>  
>
> Slawomir Kawalek
>
>  
>
>
>
> avr-gcc-list at
> http://avr1.org

---
Marc R. Wetzel
Oppenhoffallee 145
52066 Aachen
Tel:   +49 241 7014155
Mobil: +49 177 3903870
mailto://mwse@gmx.de