Texas Instruments TMS320 - Page 254

Selecting Among Multiple Streams
7-24
Example 7-14. Polling Two Streams
SIO_Handle stream0;
SIO_Handle stream1;
SIO_Handle streamtab[2];
Uns mask;
...
streamtab[0] = stream0;
streamtab[1] = stream1;
while ((mask = SIO_select(streamtab, 2, 0)) == 0) {
`I/O would block, do something else`
}
if (mask & 0x1) {
`service stream0`
}
if (mask & 0x2) {
`service stream1`
}