On 2021-10-06 3:52 p.m., Tellrell White wrote:
Thanks for the clarification.
I tried disabling and stopping MPM in order to release the I2C device
that I want to read from. However, i'm still getting the same error
that I stated above("device or resource is busy"). Is there any way of
disabling or stopping MPM ?
On Wednesday, October 6, 2021, 02:50:06 PM EDT, Marcus D. Leech
<patchvonbr...@gmail.com> wrote:
On 2021-10-06 1:56 p.m., Tellrell White via USRP-users wrote:
Currently, I have an app that I've cross-compiled for the N310 and I'm
trying to read data from the I/O Expander(TCA6408a) on the
daughterboard, however, I'm getting an error stating that the "device
or resource is busy" which leads me to believe that there is a driver
already using the device. Does anyone have any insight on this?? Also,
is there any information on using I2C for the n3xx devices?
Pretty sure that MPM (part of the UHD environment) "owns" the I2C and
SPI interfaces.
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Given that MPM is *required* to allow UHD to operate and for you to do
SDRy things, I'm not sure that's the right approach.
You might look at the code of MPM and see if there's a way to squeeze
the functionality you want from doing I2C things into the way MPM does
things.
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