Question : Targetting several tags

[PierreAuriau]

Hello,

Is it possible to target more than one tag with the function set_read_plan ?

Thank you,

Pierre

[gotthardp]

Hello. It is not possible at this moment, unfortunately.

[PierreAuriau]

Ok, thank you very much !

[gotthardp]

I will keep this issue open until it is fixed. (No date promised.)

[gotthardp]

Question: Does somebody need this, or it it just a nice to have feature?

[PierreAuriau]

It could be nice to have the feature because targetting a tag is much more efficient and faster than reading all tags and searching for the good ones !

[gotthardp]

Hello again. I finally understood and implemented the multi-filters, but it's a bit complicated, so I am not sure if I got the API right. Have a look and let me know what you think.

[PierreAuriau]

Thank you very much for your work and sorry to answer lately. I achieved to create a filter and to apply it with the function set_read_plan() but after that, the function reader.read() does not work anymore (with the error "Unsupported operation"). Do you know where this error comes from ? Shall I use asynchronous reading ?

[gotthardp]

Hello. This used to be a problem of one of the previous commits. Please get the very latest code (comited few secs ago), build it and don't forget to install it. The error shall disappear.

[PierreAuriau]

Re, I reinstall twice the wrapper but I still have the same issue. I may make a mistake, here my two-lign code :

epc_targets = [{'epc':b'1', 'bit':32}, {'epc':b'2', 'bit':32}]
reader.set_read_plan([1], 'GEN2',epc_targets, bank = ['epc'], read_power = 2900 )
reader.read()

Thank you !

[gotthardp]

This b'1' and b'2' is what you really use?

[PierreAuriau]

No no it was just an example in order to make my code clearer

[gotthardp]

My code is

reader.set_read_plan(reader.get_antennas(), "GEN2", bank=["epc"], epc_target=[{'epc':b'000000000000221612000631'}, {'epc':b'000000000000228510000023'}])

or even

reader.set_read_plan(reader.get_antennas(), "GEN2", bank=["epc"], epc_target=[b'000000000000221612000631',b'000000000000228510000023'])

[PierreAuriau]

Hello ! Sorry, I forgot to answer you but thanks a lot, it is now working for me ! But, when I try to select more than 3 tags, I get the same error as before. Here is my code : reader.set_read_plan([1],'GEN2', bank=['epc'], epc_target = [b'201909180000000000000006', b'201909180000000000000008', b'201909180000000000000002', b'201909180000000000000010']) reader.read() And I get the error : RuntimeError : Unsupported operation

Thank you in advance