HAL&Uart example ?

Hi all

I cant find example for uart with HAL http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/sad.gif

I have two RS232 uarts (uart232,uart0)

1&#39;st i connect to stdin stdout and use it for debuging (uart232)

2&#39;nd i try to make workable (uart0)

My goal is :

create interrupt for uart0 which execute when uart0 recive data and in interrupt function i want transsmit received data from uart0 to uart232

data->uart0->uart232

I can&#39;t understand why that code hang&#39;s

void isr_uart0(void* context, alt_u32 id) // uart0 interrupt handler

{

alt_u32 status;

// status = IORD_ALTERA_AVALON_UART_STATUS(base);

printf("%s",IORD_ALTERA_AVALON_UART_RXDATA(UART0_BASE));//read data from uart0 and write to uart232

}

void ALEX_UART_TRY() //uart routines (initialization , irq register )

{

void *puart0 = (void*) UART0_BASE; // set pointer to uart0

alt_u32 divisor = (ALT_CPU_FREQ/115200)-1; // calculate divisor

IOWR_ALTERA_AVALON_UART_DIVISOR(UART0_BASE, divisor); // assign bbrate

IOWR_ALTERA_AVALON_UART_CONTROL(UART0_BASE, // enable interrupt

ALTERA_AVALON_UART_CONTROL_RRDY_MSK // Enable interrupt for a read ready

);

alt_irq_register(UART0_IRQ, puart0, isr_uart0); //register irq (nios2 hangs after that )

char* msg = "hello world"; // test uart0 by sending "Hello wold" (it work fine )

FILE* fp;

fp = fopen (UART0_NAME, "w");

if (fp)

{

fprintf(fp, "%s",msg);

fclose(fp);

}

}

void main()

{

ALEX_UART_TRY();

}