Olimex Support Forum

OLinuXino Android / Linux boards and System On Modules => A13 => Topic started by: Ricardo Brandão on January 20, 2013, 12:09:49 am

Title: A13-Olinuxino-WiFi - First Steps
Post by: Ricardo Brandão on January 20, 2013, 12:09:49 am
Hi all,

I acquired a A13 with WiFi and tried to boot it.

First with VGA:
. NAND Boot: It appears an Android Logo and after nothing happens
. SD Bood: Nothing happens.

So I connect a USB-Serial.

Then I got the boot messages on the console, but I didn't get the prompt in both cases.

The step-by-step and logs are on my blog: http://www.programonauta.com.br/en/a13-olinuxino-wifi-fisrtsteps/ (Sorry for poor english).

By the way, how can I connect it through WiFi?

Thanks

Ricardo
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: jwischka on January 20, 2013, 12:21:36 am
Do you happen to have a 4gb card? If so, you might flash one of my images on it, to make sure that it's not a problem with the image you have (Linux). Also, you might move your UART to UART0 instead of UART1 (I would try this first).

Very good step by step post though - much easier to see exactly what you are doing.

Quote from: Ricardo Brandão on January 20, 2013, 12:09:49 am
Hi all,

I acquired a A13 with WiFi and tried to boot it.

First with VGA:
. NAND Boot: It appears an Android Logo and after nothing happens
. SD Bood: Nothing happens.

So I connect a USB-Serial.

Then I got the boot messages on the console, but I didn't get the prompt in both cases.

The step-by-step and logs are on my blog: http://www.programonauta.com.br/en/a13-olinuxino-wifi-fisrtsteps/ (Sorry for poor english).

By the way, how can I connect it through WiFi?

Thanks

Ricardo
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: Ricardo Brandão on January 20, 2013, 12:30:20 am
Jwischka,

My card is a Samsung 2GB that I bought from Olimex with board.

To move from UART1 to UART0 I must solder a connector on the board (beside GPIO-1). Correct?

Ricardo
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: olimex on January 20, 2013, 12:35:05 am
what power supply do you use?
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: Ricardo Brandão on January 20, 2013, 01:52:29 am
Power Supply: 12V / 500mA

Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: jwischka on January 20, 2013, 06:03:44 am
Quote from: Ricardo Brandão on January 20, 2013, 12:30:20 am
Jwischka,

My card is a Samsung 2GB that I bought from Olimex with board.

To move from UART1 to UART0 I must solder a connector on the board (beside GPIO-1). Correct?

Ricardo


I don't think so? I have a Rev. B board, but my uart0 is on the UEXT connector.

Do you have a 4GB card that you could burn a different image to? I wouldn't burn it on top of your "stock" card.
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: JohnS on January 20, 2013, 10:17:23 am
I have a Rev C WiFi and the uart with the pins on the board top near the VGA is the right one.
Just works.  115200 baud.

I agree it's best not to overwrite your current SD card if you have another.

I'd start with the headless build Jeff just sent me as it's the ONLY one that has worked for me (except when I could have a LiPo connected).

John
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: JohnS on January 20, 2013, 01:48:42 pm
Extra: with Android, what happens on the VGA monitor when you boot and watch it for a while?

Does the Android logo animate (change its highlight)?

Do you get past the logo to the Android screen (dark blue)?  Do you have the padlock?
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: jwischka on January 20, 2013, 02:46:21 pm
Quote from: JohnS on January 20, 2013, 10:17:23 am
I have a Rev C WiFi and the uart with the pins on the board top near the VGA is the right one.
Just works.  115200 baud.

I agree it's best not to overwrite your current SD card if you have another.

I'd start with the headless build Jeff just sent me as it's the ONLY one that has worked for me (except when I could have a LiPo connected).

John


Lovely how things change - but yes, I'd try a different image, just to eliminate that.

Ricardo - let me know if you need the build I sent John
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: vinifr on January 20, 2013, 04:09:24 pm
Hi Ricardo,

There is something strange here...  :o You connected the serial cable on UART0 (UART1 is written but it is actually the UART0! Check schematic), but should have connected to UART1! Use connector UEXT,pins 1, 2, 3 and 4. http://dl.dropbox.com/u/22273442/A13/uart1.png (http://dl.dropbox.com/u/22273442/A13/uart1.png)
You can not use the UART0 and SD simultaneously. https://www.olimex.com/forum/index.php?topic=420.msg2449#msg2449 (https://www.olimex.com/forum/index.php?topic=420.msg2449#msg2449)

UART1: http://dl.dropbox.com/u/22273442/A13/UEXT_UART1.jpg (http://dl.dropbox.com/u/22273442/A13/UEXT_UART1.jpg)
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: JohnS on January 20, 2013, 04:43:56 pm
I think some changes were done, and bear in mind that ttyS0 is uart1 not uart0

John
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: Ricardo Brandão on January 20, 2013, 06:34:56 pm
Hi guys,

I post a video with a VGA monitor connected, so JohnS you can see what happens (or not happens) after the Android Logo.

https://plus.google.com/photos/110946956363850223802/albums/5835564081207872449/5835564086547575842?authkey=CJHe27LAkLLj_gE

Vinicius, I tried to connect in UEXT and the same happens. But once I got a message that the board will boot again in 10 secs.

Thanks a lot.

Ricardo
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: Ricardo Brandão on January 20, 2013, 06:38:12 pm
Hi,

I'll try to build another image too. Tomorrow I'll buy a new SD to don't rewrite this one.

Jwishka, yes I appreciate if you can send me an image.

Thanks

Ricardo
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: vinifr on January 20, 2013, 06:50:48 pm
Quote from: Ricardo Brandão on January 20, 2013, 06:34:56 pm
Hi guys,

I post a video with a VGA monitor connected, so JohnS you can see what happens (or not happens) after the Android Logo.

https://plus.google.com/photos/110946956363850223802/albums/5835564081207872449/5835564086547575842?authkey=CJHe27LAkLLj_gE

Vinicius, I tried to connect in UEXT and the same happens. But once I got a message that the board will boot again in 10 secs.

Thanks a lot.

Ricardo


Can you post log error?
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: JohnS on January 20, 2013, 07:25:39 pm
Quote from: Ricardo Brandão on January 20, 2013, 06:34:56 pm
Hi guys,

I post a video with a VGA monitor connected, so JohnS you can see what happens (or not happens) after the Android Logo.

https://plus.google.com/photos/110946956363850223802/albums/5835564081207872449/5835564086547575842?authkey=CJHe27LAkLLj_gE

Vinicius, I tried to connect in UEXT and the same happens. But once I got a message that the board will boot again in 10 secs.

Thanks a lot.

Ricardo

Can you describe it a bit please as I can't view it for some hours / tomorrow at the earliest otherwise.
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: Ricardo Brandão on January 20, 2013, 07:33:43 pm
Vinicius,

I didn't get repeat this msg error (reboot in 10 seconds).

But in my blog I posted both logs (boot from NAND and SD).

As soon I get the message "boot in 10 secs" I'll post the log in my blog.

http://www.programonauta.com.br/en/a13-olinuxino-wifi-fisrtsteps/

Ricardo
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: Ricardo Brandão on January 20, 2013, 07:35:39 pm
Vinicius,

I didn't get repeat this msg error (reboot in 10 seconds).

But in my blog I posted both logs (boot from NAND and SD).

As soon I get the message "boot in 10 secs" I'll post the log in my blog.

http://www.programonauta.com.br/en/a13-olinuxino-wifi-fisrtsteps/

Ricardo
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: Ricardo Brandão on January 20, 2013, 07:40:42 pm
John,

In the video, I connect a monitor on VGA connector remove the SD Card power the board. So, appears an Android logo (Robot) for few seconds, after another Android Logo (The word "Android"), and nothing more happens. The monitor lost the signal.

After, I disconnect the power suplly, insert the SD card, power the board again, few seconds after, the "No Signal" message disappears on monitor, more few seconds the "No signal" message appear again.

By the way, what is the expected behavior when I boot from NAND and from SD? In both cases I reach the command prompt?

Thanks
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: jwischka on January 21, 2013, 03:27:11 am
Ricardo -

I've updated my images to contain a headless version, which may help you get booting.
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: Ricardo Brandão on January 29, 2013, 03:36:30 am
Hi guys

The problem was the power supply.

I changed and everything works fine.

Android and Linux with boot through UART, LCD and VGA.

Ricardo
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: jwischka on January 29, 2013, 06:11:31 am
Quote from: Ricardo Brandão on January 29, 2013, 03:36:30 am
Hi guys

The problem was the power supply.

I changed and everything works fine.

Android and Linux with boot through UART, LCD and VGA.

Ricardo


Glad to hear you got it working.
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: LubOlimex on January 29, 2013, 09:20:04 am
Quote from: Ricardo Brandão on January 29, 2013, 03:36:30 am
Hi guys

The problem was the power supply.

I changed and everything works fine.

Android and Linux with boot through UART, LCD and VGA.

Ricardo


Glad the change of the power supply did make a difference. I was getting really biased over here comparing the boot logs.

Regards,
Lub/OLIMEX
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: Ricardo Brandão on January 29, 2013, 10:06:20 am
Hi,

I'm really "rusty" in terms of electronic issues.

I forgot the "golden rule" of electronic: "90% of electronic issues is due power supply or bad contact".

Ricardo
Title: Re: A13-Olinuxino-WiFi - First Steps
Post by: Ricardo Brandão on January 30, 2013, 03:33:50 am
I Published the photos on my blog:

http://www.programonauta.com.br/en/a13-olinuxino-conclusion/