On 2021-10-06 5:17 p.m., Tellrell White wrote:
So, just to clarify, if its "required" is there no way of disabling it
or removing??
The project I'm working on is based on using the Open CPI framework,
which is basically an opensource framework for developing and
executing component based apps on embedded platforms. With that being
said, my task isn't tightly bound to using UHD, therefore, I would
like to disable or remove MPM for a custom application.
So, you're using the N310 as a really expensive single-board computer,
or you're doing all your own FPGA+device programming, bypassing UHD
entirely? That seems
like a tough hill to climb, but it's your hill, not mine.
It's likely that MPM is being restarted by systemd when you kill it (my
recollection is that the N310 system image uses systemd, much like any other
Linux system these days).
It really is *absolutely* necessary if you're using UHD for its intended
purpose.
On Wednesday, October 6, 2021, 03:54:37 PM EDT, Marcus D. Leech
<patchvonbr...@gmail.com> wrote:
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> <mailto: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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