Write to waveform record using PVUtil.writePV

["Abdalla Ahmad" <abdalla.ahmad@sesame.org.jo>]

Hello all,

 

Recently we created a waveform record that holds a firmware for a device. We read the firmware from a binary file and put every 4 bytes as unsigned integer into an array of integers. We found out that in order for arrays to be passed to the writePV API using a Python script, it must be a float array (either array or jarray). Can be done something like this:

 

Data = "" [], 'f' )

 

Now since we need to send unsigned integers, something like this won't work:

 

Data = "" [], 'l' )

 

Or anything other than 'f' or 'd' will give error:

 

java.lang.RuntimeException: Unsupported type for CA: class [J

 

Why does the writePV API does not accept any array other than float or double array array? The bytes to be sent are unpacked from the bin file with a specific bit pattern that should not be changed or the device is rendered unusable and needs restart.

 

Best Regards,

 

Abdalla Ahmad

Control Engineer

SESAME

Allan, Jordan.

Tel: (+962-5) 3511348 , ext. 265

Fax: (+962-5) 3511423

Mob: (+962-7)88183296

www.sesame.org.jo