emoncms - php raspberrypi_run.php halts with no error

Submitted by tdereus on Sat, 16/03/2013 - 11:11

Been struggling to get my raspberrypi to populate the data it is receiving from my emontx. Using minicom I can confirm that the raspberrypi is receiving the power data from emontx.

 10 76 0 80 0 81 0 0 95 100 206 100 206 100 206 100 206                                              
 10 73 0 80 0 79 0 235 94 100 206 100 206 100 206 100 206                                            
 10 69 0 94 0 72 0 22 95 100 206 100 206 100 206 100 206
 10 69 0 92 0 68 0 255 94 100 206 100 206 100 206 100 206

The raspberrypi_run.php scripts halts with no error and never exits as I presume it is supposed to. Here is an example if i run this from command line (note crontab is not running):

pi@pieater /var/www/emoncms/Modules/raspberrypi $ php raspberrypi_run.php
Remote upload enabled - details correct

Any ideas?

Re: emoncms - php raspberrypi_run.php halts with no error

Submitted by tdereus on Sat, 16/03/2013 - 11:34.

Just did some troubleshooting and seems the script is getting stuck whilst trying open the stream to the serial port:

  // Open the stream for read and write and use it.
  $f = fopen($filename, "r+", false, $c);

Re: emoncms - php raspberrypi_run.php halts with no error

Submitted by Barry Broom (not verified) on Sun, 17/03/2013 - 14:12.

Hi Tim,

I have a similar problem with mine. Everything is working except for the PHP script that interfaces with the R-Pi receiver. This is entirely of a problem of my own making as I have installed it on Arch Linux ARM instead of Raspian as recommended. I'll let you know if I make any progress.

Barry

Re: emoncms - php raspberrypi_run.php halts with no error

Submitted by Barry Broom (not verified) on Tue, 19/03/2013 - 19:17.

Okay, I got emonCMS with the Raspberry Pi extension running on Arch Linux. I didn't have Python installed or the required modules including Serial and GPIO. This fixed it for me.

Re: emoncms - php raspberrypi_run.php halts with no error

Submitted by Jérôme on Wed, 20/03/2013 - 09:45.

@tdereus : Could it be that the COM port is already open (by minicom for instance) ? Or the path is wrong (I don't see any reason why) ?

if (PATH_SEPARATOR != ";") {
$filename = "dio.serial:///dev/ttyAMA0";
} else {
$filename = "dio.serial://dev/ttyAMA0";
}

// Open the stream for read and write and use it.
$f = fopen($filename, "r+", false, $c);
if ($f)

@Barry : Unless you're using the (still work-in-progress) python script, I don't think you need those python dependencies. Which gateway script (php or python ?) and which version (master, dev ?) are you using ?

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