Re: Testing ad9833 with Diolan DLN2 adapter

Gaston Gonzalez
2019-03-15T13:41:48Z

On Fri, Mar 15, 2019 at 07:19:22AM +0000, Ardelean, Alexandru wrote:
> On Thu, 2019-03-14 at 17:21 -0300, Gaston Gonzalez wrote:
> > [External]
> >
> >
> > On Thu, Mar 14, 2019 at 01:44:50PM +0000, Ardelean, Alexandru wrote:
> > > On Thu, 2019-03-14 at 15:39 +0200, Alexandru Ardelean wrote:
> > > > [External]
> > > >
> > > >
> > > > On Wed, Mar 13, 2019 at 9:36 PM Gaston Gonzalez <gascoar@gmail.com>
> > > > wrote:
> > > > >
> > > > > Hi,
> > > > >
> > > > > I am trying to test an ad9833 module like the one in [1] using
> > > > > Diolan
> > > > > DLN2
> > > > > adapter and the driver ad9834.c
> > > > >
> > > > > So far I get the DLN2 adapter correctly registered as master device
> > > > > (below the spi debug output) but the ad9833 driver doesn't even
> > > > > probe.
> > > > >
> > > > > Below the spi log output and pin connections. I'm using the testing
> > > > > branch of the iio repo. The ad9834 and dln2 drivers were compiled
> > > > > as
> > > > > modules.
> > > > >
> > > > > The question is: should this setup probe or extra steps are needed?
> > > >
> > > > Hey,
> > > >
> > > > I'm assuming you enabled the driver in the kernel ?
> > > > How does your device-tree look ?
> > > >
> > > > There is some documentation about this chip/driver:
> > > >
> > >
> > >
> https://wiki.analog.com/resources/tools-software/linux-drivers/iio-dds/ad9834
> > > >
> > > > The old doc still assumes that the driver is using the old
> > > > platform-data mechanism.
> > > > It needs a bit of updating, but some info should still be useful.
> > >
> > > There's this device-tree overlay example/reference for the Raspberry
> > > PI:
> > >
> > >
> https://github.com/analogdevicesinc/linux/commit/7e0b66336ed05dab97c5663f7bc43822c79199dd
> > >
> > > A lot of our chips/eval-boards are interface with the PI.
> > >
> >
> > Hi Alexandru,
> >
> > Thank you for your reply.
> >
> > Yes, I inserted the driver, but I didn't use any device-tree for this
> > device.
> >
> > To be completely honest I read the AD9834 Analog wiki page, I thought
> > about
> > adding the ad9834_platform_data and spi_board_info but then I saw that
> > the
> > ad9834_platform_data structure was removed in commit 80109c32, so I
> > thought
> > 'I'm missing something...' that's why I asked.
> >
> > I will try using the files in the Analog tree you pointed to.
>
> I updated the wiki page.
> If you see issues with it, feel free to point them out.
>
> We keep wanting to do a refresh of the entire wiki, but that's a big effort
> right now (given new things we have to do). But, if we do it on-demand
> (like this) it also helps us get a feel for what's being used.
>
> Thanks
> Alex
>

That's great.

Thank you, it is really appreciated.

Gaston

> >
> > Thanks a lot!
> >
> > Gaston
> >
> > > >
> > > > Thanks
> > > > Alex
> > > >
> > > > >
> > > > > Any help appreciated.
> > > > >
> > > > > Thanks,
> > > > >
> > > > > Gaston
> > > > >
> > > > > Hardware device
> > > > > ---------------
> > > > >
> > > > > [1]
> > > > >
> https://www.amazon.com/Alloet-AD9833-Generator-Programmable-Triangle/dp/B07GS1CDXZ/ref=sr_1_1?keywords=ad9833&qid=1550752799&s=gateway&sr=8-1
> > > > >
> > > > > Kernel tree: IIO, testing branch.
> > > > >
> > > > > DLN2 - AD983 connections
> > > > > ------------------------
> > > > >
> > > > > - SS -> FSY
> > > > > - SCK -> CLK
> > > > > - MOSI -> DAT
> > > > > - GND -> GND
> > > > > - VCC_OUT -> VCC
> > > > >
> > > > > SPI debug output
> > > > > ----------------
> > > > >
> > > > > [65465.572149] usb 1-1.2: New USB device found, idVendor=a257,
> > > > > idProduct=2013, bcdDevice= 1.00
> > > > > [65465.572155] usb 1-1.2: New USB device strings: Mfr=1, Product=2,
> > > > > SerialNumber=0
> > > > > [65465.572158] usb 1-1.2: Product: Diolan DLN2
> > > > > [65465.572160] usb 1-1.2: Manufacturer: Diolan
> > > > > [65466.553970] dln2 1-1.2:1.0: Diolan DLN2 serial 33629166
> > > > > [65466.554925] usbcore: registered new interface driver dln2
> > > > > [65466.733716] dln2-spi dln2-spi.3.auto: cs_num = 5
> > > > > [65466.734198] dln2-spi dln2-spi.3.auto: freq_min = 2000, freq_max
> > > > > =
> > > > > 18000000
> > > > > [65466.734453] dln2-spi dln2-spi.3.auto: bpw_mask = 0xFF80
> > > > > [65466.735044] dln2-spi dln2-spi.3.auto: registered master spi0