umtrx_update spi readback from firmware not working

fairwaves / UHD-Fairwaves

Fairwaves version of the UHD drivers, tweaked to support Fairwaves UmTRX.

http://umtrx.org

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umtrx_update spi readback from firmware not working #8

Closed guruofquality closed 9 years ago

guruofquality commented 9 years ago

The spi core is working ok from the host so runtime behavior is not an issue. However, the firmware (on boot time) is always reading back zeros. This could be an issue with:

Something on the lms6 isnt enabled at fw boot time
Bug in the firmware spi.c that wraps talking to spi core
Bug in the settings bus between wishbone and spi core
And or the readback mux

guruofquality commented 9 years ago

The LMS6 was in reset mode: https://github.com/fairwaves/UHD-Fairwaves/commit/35522afed133394b40f44e967cd4984ee6f705f0