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Altera_Forum
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21 years ago

Nios II UART Troubles

OK, I am porting some code from Nios 1 to Nios 2 and I am stuck on the UART code. Here is the original code: char poll_uart_rx( void ) { int i; i = nr_uart_rxchar( na_uart_0 ); if( ...
Altera_Forum's avatar
Altera_Forum
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21 years ago

I open device uart in non blocking mode:

static int fdterm; // FILEDESCRIPTOR RETURNED BY OPEN

..

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

..

reading is done by

..

res=read(fdterm,uart1_tempbuff,sizeof(uart1_tempbuff)-1);

if(res>0) {

... we have received some bytes

}