how to have dio on raspberry

to give some precision, dio allow direct access to tty, .. exmple: $DEVICE="/dev/ttyS1"; $LOCK="/var/lock/lockdev/LCK..ttyS1";

----- $fd = dio_open($DEVICE, O_RDWR |O_NOCTTY | O_NONBLOCK ); if (! $fd ) { LogErrors($myErrors,"Error opening $DEVICE");ABORT("error opening $DEVICE ");}

$param = array( 'baud' => 9600, 'bits' => 8, 'stop' =>1, 'parity' => 0); if ( ! dio_tcsetattr($fd, $param) ) { dio_close($fd); ABORT("Error while dio_tcsetattr \n"); }

$rc = dio_write($fd, "\r"); sleep(1); while ($rs != ":" ) { $rs = dio_read($fd, 1); }

$rc = dio_write($fd, "E0\r");

$rs = ""; $x =0; while ($rs != ":" ) { $rs = dio_read($fd, 1); $x++; if ( $x > 10000 ) { LogErrors($myErrors,"Timeout waiting prompt");ABORT("Timeout waiting prompt\n"); } }

$rc = dio_write($fd, "SH\r");

Unless you find php7 dio package in the repository or in a ppa, you will need to compile your own php with dio support.

better, start at the beginning

I dont see that adds anything and it is less informative

Well the intro does say

Note:

longer bundled with PHP as of PHP 5.1.0.

That might be helpful to know...

Tht info was in the link I posted first as well.

As was the more imnporatnt note:

"It is not bundled anymore. See

Op 01-09-19 om 15:23 schreef ZOT:

Alternatively, just use fopen(), fclose(), fread(), fwrite(). Set port parameters with exec("stty -F [device] [parameters]"), see: man stty. Flushing the buffers at the right moment might be tricky, or it might work well automatically; I don't know.

Look at this old thing for inspiration:

I could not find it. Maybe we are seeing different text?

Yes, that's useful, but it's in a user note. This one is probably reliable though.