Read from UART

Thanks for your help!

I modified my UART in SOPC-Builder, now it has the same properties (i took the values of jmastron) as my Hyperterminal (is there a better alternative?). Also i modified my source code , i took Fischers code example in the other thread about nonblocking stdin as base:

int fdterm; // FILEDESCRIPTOR RETURNED BY OPEN

FILE * fpterm; // FILE pointer returned by fdopen

int uart1_rxcount = 0;

char uart1_rxbuffer[255];

int main()

{

fdterm = open("/dev/uart1", O_RDWR | O_NONBLOCK | O_NOCTTY);

fpterm = fdopen(fdterm,"rw+");

uart1_rxcount=read(fdterm, &uart1_rxbuffer, sizeof(uart1_rxbuffer));

if(uart1_rxcount>0)

{

fprintf(fpterm,"received:%s\r\n",uart1_rxbuffer);

}

Now: my debugger says uart1_rxcount is always NULL http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/dry.gif , still nothing happens... Do i have to implement interrupts from the uart? And whats about this EPP port Jeroen was talking about?

Anyway, it´s funny to see that something happens with my board http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif

Hope to hear you...

Max