9260 uart problem

Development Boards MicroMod
1

I have started playing with my 60 again and am having an interesting issue, when I step through my code it is fine, but if i run it it errors. I am just doing a simple echo through hyperterm.

        while(1)
        {
        	if(usart_IsDataAvailable(AT91C_BASE_US1))
        	{
        		print = usart_read_ascii(AT91C_BASE_US1);
                        usart_print_char(AT91C_BASE_US1, print);

        	}

        }

this is on the olimex 9260 board and I have used this setup in the past, any ideas?

2

er, a hint about the UART I/O code you’re using?

3 
unsigned char usart_IsDataAvailable(AT91S_USART *usart)
{
    if ((usart->US_CSR & AT91C_US_RXRDY) != 0) {

        return 1;
    }
    else {

        return 0;
    }
}

char usart_read_ascii (AT91S_USART *usart)
{

	char input;

	while (!(usart->US_CSR & AT91C_US_RXRDY));

	input = (char)usart->US_RHR;


	return input;
}

void usart_print_char (AT91S_USART *usart, char x)
{
	while (!(usart->US_CSR & AT91C_US_TXRDY));
	usart->US_THR = x;
}

void configure_usart1()
{
	AT91C_BASE_US1->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX;
	//AT91C_BASE_US1->US_CR = AT91C_US_RXDIS | AT91C_US_TXDIS;
	    /* Disable interrupts */
	AT91C_BASE_US1->US_IDR = 0xFFFFFFFF;

	//Setup for the ENDTX Interrupt (for DMA)
	AT91C_BASE_AIC->AIC_SVR[AT91C_ID_US1] = (unsigned long) ENDTX_handler;
	AT91C_BASE_AIC->AIC_SMR[AT91C_ID_US1] = AT91C_AIC_SRCTYPE_INT_LEVEL_SENSITIVE | AT91C_AIC_PRIOR_LOWEST;
	AT91C_BASE_AIC->AIC_ICCR = (1 << AT91C_ID_US1);

	//Enable Interrupt for ENDTX
	//AT91C_BASE_US1->US_IER = AT91C_US_TXBUFE;
	//AT91C_BASE_US1->US_IER = AT91C_US_ENDTX;

	//AT91C_BASE_AIC->AIC_IECR = (1 << AT91C_ID_US1);


	    /* Configure PIOs for USART1 */
	    AT91C_BASE_PIOB->PIO_ASR = AT91C_PB6_TXD1 | AT91C_PB7_RXD1;
	    AT91C_BASE_PIOB->PIO_BSR = 0;
	    AT91C_BASE_PIOB->PIO_PDR = AT91C_PB6_TXD1 | AT91C_PB7_RXD1;

	    /* === Configure serial link === */
	    /* Define the baud rate divisor register [BRGR = MCK / (BAUD RATE * 16)] */
	    AT91C_BASE_US1->US_BRGR = 7;   //27 for 230400 ## 54 for 115200 ## 108 for 57600 ## 647 for 9600 ## 1293 for 4800 ##7 for 921600
	    /* Define the USART mode */
	    AT91C_BASE_US1->US_MR = AT91C_US_PAR_NONE
								| AT91C_US_USMODE_NORMAL
								| AT91C_US_CLKS_CLOCK
								| AT91C_US_CHRL_8_BITS
								| AT91C_US_NBSTOP_1_BIT
								| AT91C_US_CHMODE_NORMAL;


	    /* Enable transmitter */ //and receiver :)
	    AT91C_BASE_US1->US_CR = AT91C_US_TXEN;
	    AT91C_BASE_US1->US_CR = AT91C_US_RXEN;

	    AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_US1;  //providing clock from the PMC
	    AT91C_BASE_PIOB->PIO_PPUER = AT91C_PB6_TXD1;
}