Hi community. I M trying to write new EPC values to tags with the m7e and Thingmagic app
I want to write something like V20002 for a tag but it doesn’t ever write the correct value. Has anyone been able to make this work?
I realize that the output will be in hex. I can change it back to ASCII in my arduino app
if “The Thingmagic app” is the mercuryAPi, there is the example writetag.c. if you use the Sparkfun library there is example3 for the EPC. Or are you using the URA (universal Reader assistant ) ? I have just tried that (HEX 45313233) and that worked. On the URA make sure to set the read and write power to a low level ( 5dbM) and put the tag on top off of the on-board antenna.
It is the URA. I will try and lower the power! Thanks!
Ok, I changed the power on read and write down to 5dbm. I am trying to write the tag EPC and I get an error gen2 memory overrun -bad pc
Here is what i had set in the app
PC stands for Protocol Control word. It is stored in the EPC memory space and contains information about the length of the EPC ( in words so 1 word = 2 bytes) , whether or not USER memory is available, whether there is an Extended Protocol control word and GEN2 of GEN1 tag. See whether “configure GEN2 settings” can help.
All resolved, lowered the write power and its great now.