AnsweredAssumed Answered

SPIDEV without chip select

Question asked by hacke on Sep 9, 2015
Latest reply on Sep 10, 2015 by sonic

Hello

 

I have a SPI DA (DAC8420) converter with chipselect tied to ground, so it is always selected.

Instead it needs a positive load pulse to get the value out on the analog side

 

The load pulse pin is connected to the SPI MISO Pin (PF12)

 

I try to use the spidev driver from user space and managed to disable the MISO functionality

But is it possible to tell the driver not to use chipselect ??

When i remove

.chipselect

in my board file, the spidev disappears from /dev directory

 

Anyone who knows how to do it ??

 

best regards

  Håkan

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