[Arm-dev] pcDuino Nano lite

Robert Moskowitz rgm at htt-consult.com
Mon Jan 4 16:25:40 UTC 2016


Fixing the subject line...

On 01/04/2016 11:03 AM, Troy Dawson wrote:
>
>
> On Mon, Jan 4, 2016 at 8:26 AM, Robert Moskowitz <rgm at htt-consult.com 
> <mailto:rgm at htt-consult.com>> wrote:
>
>     Got my Nano Lite running Fedora23 which is the first step before
>     testing with Centos7.  On caveat, see below:
>
>     On 12/25/2015 01:58 PM, Troy Dawson wrote:
>>
>>
>>     On Fri, Dec 25, 2015 at 11:31 AM, Robert Moskowitz
>>     <rgm at htt-consult.com <mailto:rgm at htt-consult.com>> wrote:
>>
>>
>>
>>         On 12/25/2015 11:18 AM, Troy Dawson wrote:
>>>         Hi,
>>>         Have you looked at the pcduino3 nano lite.
>>>         $15 and it looks like it meets all your specs.
>>>
>>>         http://www.amazon.com/pcDuino-pcDuino3-Nano-Lite/dp/B00ZEPZGQO/ref=sr_1_1?ie=UTF8&qid=1451059734&sr=8-1&keywords=pcduino3+nano+lite
>>>
>>>         It has everything in the kernel and uboot and works with
>>>         Fedora 23 with no modifications.
>>>         I've got Yor Linux armv7 build working on it, so I'm quite
>>>         certain it will work with CentOS arm build, but I have not
>>>         tested it.
>>>
>>>         There are two downsides to this board.
>>>         1 - the sata (and power cable) are sold separately
>>
>>         Ah, I see it does have a sata port.  I missed that the first
>>         time.
>>
>>         And it looks like it has the 5V power out that will hopefully
>>         power any HD up to 1A.
>>
>>         If it uses the same uboot as the pcduino 3 nano, then I can
>>         take the Cubietruck image and dd the appropriate uboot and boot.
>>
>>         Have you tested it?   The big test is to only have uboot on a
>>         4Gb mSD and the whole image on the Sata HD and see if it
>>         switches over like the Cubieboard does. Otherwise there is a
>>         lot of customization needed.
>>
>>
>>     Yes, I've tested it.  It used the same uboot and kernel dtd as
>>     the pcduino 3 nano.
>>     I have a couple of the pcduino 3 nano machines and ordered a
>>     couple of the lite's, so I've used both.  I used the nano uboot
>>     on the lite and it worked with no modifications.  I also did
>>     nothing with the kernel and it worked great.
>>
>>
>>         I am assuming those 3 posts off to the side are for the
>>         serial console.  Nice that they put it off to the side.  But
>>         that would mess up a case somewhat.
>>
>
>     I cannot get the serial console working.  I have follow the
>     schematic at:
>
>     http://learn.linksprite.com/pcduino/quick-start/pcduino8/explanation-of-headers-of-pcduino3-nano/
>
>     To connect a USB/TTL adapter and run (as I do for my Cubieboards)
>
>     screen /dev/ttyUSB0 115200
>
>     And nothing.  So I really want to have this working to bring up C7
>     on it for testing.
>
>
>
>
> I don't have an adaptor for the serial ports, so I've just been using 
> the hdmi, which works great.  But I guess then you have to hook up a 
> hdmi and usb keyboard, which might make things harder, depending on 
> your setup.

I also have connected that way, but it is a pain not being able to 
cut-n-paste from notes on how to configure C7.  I can ssh in, but with 
the console I know I can get away with a lot.  Plus I can save the 
console session and review it for problems.  A lot of items I have 
detected through the console session logs.

You can get the converters really cheap on ebay.  Every board I have has 
one permanently installed, so I can always get into the console.  I buy 
them in a 5 unit lot from a china supplier at $5 for the lot.


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