octave:38> sif0 = "/dev/pts/2";
octave:39> sif1 = "/dev/pts/3";
octave:40> s0 = serial(sif0, 115200);
octave:41> s1 = serial(sif1, 115200);
octave:42>
octave:42> # Example 1: blocking read, returns exactly 6 bytes (old behavior)
octave:42> srl_flush(s0); srl_flush(s1); srl_write(s0, "Hello1!"); [data, count] = srl_read(s1, 7); char(data), count
ans = Hello1!
count =  7
octave:43>
octave:43> # Example 2: non-blocking read, returns 6 bytes from buffer immediately (n.b. tried to read up to 10, only 6 written to the buffer)
octave:43> srl_timeout(s1, 0); srl_flush(s0); srl_flush(s1); srl_write(s0, "Hello2!"); sleep(1); tic(); [data, count] = srl_read(s1, 10); toc(); char(data), count
Elapsed time is 0.00022 seconds.
ans = Hello2!
count =  7
octave:44>
octave:44> # Example 3: non-blocking read, returns 6 bytes after a timeout of 3.0 seconds (n.b. tried to read up to 10)
octave:44> srl_timeout(s1, 30); srl_flush(s0); srl_flush(s1); srl_write(s0, "Hello3!"); sleep(1); tic(); [data, count] = srl_read(s1, 10); toc(); char(data), count
Elapsed time is 3 seconds.
ans = Hello3!
count =  7
octave:45>
octave:45> # Example 4: non-blocking read, returns no data after timeout of 3.0 seconds (n.b. there was no data available to the interface before reading)
octave:45> srl_flush(s0); srl_flush(s1); sleep (1); tic(); [data, count] = srl_read(s1, 10); toc(); char(data), count,  srl_close(s0); srl_close(s1);
Elapsed time is 3 seconds.
ans =
count = 0
octave:46>