I have a brand new install of raspian, fresh install of apache2 + php
+rrdools But the php script that ran well on a old version of rapian ( I had compiled both apache and php at that time) faile with '-- undefined function dio_open() ' So probably php is not compiled with dio! Is there a way to add these functionality to php without recompile? Many tanks to all
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.
-- //Aho
-- ?The ultimate result of shielding men from the effects of folly is to fill the world with fools.? Herbert Spencer
better, start at the beginning
I dont see that adds anything and it is less informative
-- It?s easier to fool people than to convince them that they have been fooled. Mark Twain
Well the intro does say
Note:
longer bundled with PHP as of PHP 5.1.0.
That might be helpful to know...
-- Ben.
Tht info was in the link I posted first as well.
-- ?It is hard to imagine a more stupid decision or more dangerous way of making decisions than by putting those decisions in the hands of people who pay no price for being wrong.? Thomas Sowell
As was the more imnporatnt note:
"It is not bundled anymore. See
-- ?it should be clear by now to everyone that activist environmentalism (or environmental activism) is becoming a general ideology about humans, about their freedom, about the relationship between the individual and the state, and about the manipulation of people under the guise of a 'noble' idea. It is not an honest pursuit of 'sustainable development,' a matter of elementary environmental protection, or a search for rational mechanisms designed to achieve a healthy environment. Yet things do occur that make you shake your head and remind yourself that you live neither in Joseph Stalin?s Communist era, nor in the Orwellian utopia of 1984.? Vaclav Klaus
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.
-- Ben.
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