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Posted at 6/18/2018 16:12:09     
Dear colleadgues,
I'm trying to read the RX reception of the spi in my kernel code.
The TX and RX signal appear in the oscilloscope but the function "spi_w8r8" and "spi_write_then_read" always returns 0. Why does this happen? Any suggestions?
thank you very much.

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