UmTRX firmware update

Alexander Chemeris alexander.chemeris at gmail.com
Tue Jun 25 10:17:25 UTC 2013


Hi all,

If you use the latest UHD sources, you should update your ZPU firmware
to the latest version:
http://people.osmocom.org/ipse/umtrx-v2/fpga_bitsream/2013-06-25-2f3817a9/

You could update your FPGA image as well, but ZPU part is critical for
the smooth operation with the latest host side code. If you don't
update ZPU, all UHD utilities will exist on startup. The reason is
that the new host code sends a command to ZPU which older ZPUs does
not understand, so the host side code raises exception and exits.

A new feature which is the reason for the breakage is that now you
could not only set, but also read back the current value of the TCXO
calibration DAC. If you run this utility without any parameters, it
will autodetect UmTRX and read the DAC value from it.
https://github.com/fairwaves/umtrx_scripts/blob/master/python_lib/umtrx_vcxo.py
This is praticularly useful when you calibrate using GPS and want to
store this value to EEPROM to use it when GPS is not available.

--
Regards,
Alexander Chemeris.
CEO, Fairwaves LLC / ООО УмРадио
http://fairwaves.ru




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