Re: Testing ad9833 with Diolan DLN2 adapter

Ardelean, Alexandru
2019-03-15T07:19:33Z

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

>
> 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