Difference between revisions of "A13-SOM"

(Python)
(A13-SOM-512)
 
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*3.3V input power supply
 
*3.3V input power supply
 
*PCB dimensions: 61 x 33 mm
 
*PCB dimensions: 61 x 33 mm
 
+
<br>
 
== Official Images from OLIMEX ==
 
== Official Images from OLIMEX ==
  
Line 22: Line 22:
 
=== Linux ===
 
=== Linux ===
  
Torrent of Debian release 1: [[Media:A13_SOM_Debian_kernel_34_90_100kHz_I2C_WIFI_USB_LAN_X_touch_256MB_release_1.torrent‎|A13-SOM-256 Debian Linux with kernel 3.4.90+]]
+
==A13-SOM-256==
  
'''Direct download location of Debian release 1: [https://drive.google.com/file/d/0B-bAEPML8fwleUpCV3lJSzZHc0U/edit?usp=sharing A13-SOM-256 Debian 4GB SD-card image release-1 with hardware accelerated video and more]'''
+
'''Newest official Debian releases (recommended):'''
  
Torrent of Debian release 1: [[Media:A13_SOM_Debian_kernel_34_90_100kHz_I2C_WIFI_USB_LAN_X_touch_512MB_release_1.torrent‎‎|A13-SOM-512 Debian Linux with kernel 3.4.90+]]
+
Direct FTP download location of Debian release #2: [https://ftp.olimex.com/Allwinner_Images/A13-SOM/Outdated%20Sunxi%20Images/sd/A13_SOM_Debian_kernel_34_90_100kHz_I2C_WIFI_USB_LAN_X_touch_256MB_release_2.zip Debian 4GB SD-card image release 2 with hardware accelerated video and more]
  
'''Direct download location of debian release 1: [https://drive.google.com/file/d/0B-bAEPML8fwlRXFEZXRkVnNNdm8/edit?usp=sharing A13-SOM-512 Debian 4GB SD-card image release-1 with hardware accelerated video and more]'''
+
Build instructions for the latest image: https://github.com/OLIMEX/OLINUXINO/blob/master/SOFTWARE/A13/A13-SOM-build/A13_SOM_kernel_3.4.90_building_description_with_mainline_u-boot_2.txt
 +
 
 +
'''Older Debian releases (not recommended):'''
 +
 
 +
Direct download location of Debian release #1: [https://ftp.olimex.com/Allwinner_Images/A13-SOM/Outdated%20Sunxi%20Images/sd/A13_SOM_Debian_kernel_34_90_100kHz_I2C_WIFI_USB_LAN_X_touch_256MB_release_1.7z A13-SOM-256 Debian 4GB SD-card image release-1 with hardware accelerated video and more]
 +
 
 +
==A13-SOM-512==
 +
 
 +
'''Please note that the RAM memory of A13-SOM-512 was changed again in revision G to SAMSUNG K4B4G1646D-BYK0 (previously it used memories SAMSUNG K4B2G0846Q and even older hardware reviisons used HYNIX H5TQ2G83CFR, older boards might require older Linux images).'''
 +
 
 +
'''Newest official Debian releases (recommended):'''
 +
 
 +
Direct download of release 4 preliminary Linux image - suitable for boards with SAMSUNG K4B4G1646D-BYK0 DDR3 RAM memory: [https://ftp.olimex.com/Allwinner_Images/A13-SOM/Outdated%20Sunxi%20Images/sd/A13_SOM_Debian_kernel_34_90_512MB_mainline_u-boot_21042015_release_4_preliminary.zip A13-SOM-512 Debian Linux with kernel 3.4.90+] in case of problems test with the previous release 3.
 +
 
 +
The build instructions for the latest Debian images might be found in this wiki article: [[A13-SOM-building-latest-Debian|building Debian for A13-SOM-256 and A13-SOM-512 (with support for HYNIX or SAMSUNG RAM memory)]]
 +
 
 +
'''Older Debian releases (not recommended):'''
 +
 
 +
Direct download of release 3 preliminary Linux image - suitable for boards with SAMSUNG K4B2G0846Q DDR3 RAM memory: [https://ftp.olimex.com/Allwinner_Images/A13-SOM/Outdated%20Sunxi%20Images/sd/A13_SOM_Debian_kernel_34_90_mainline_u-boot_21042015_release_3_preliminary.7z A13-SOM-512 Debian Linux with kernel 3.4.90+] in case of problems test with the previous release 2.
 +
 
 +
Direct download location for Debian release 2 image - suitable for boards with SAMSUNG K4B2G0846Q DDR3 RAM memory: [https://ftp.olimex.com/Allwinner_Images/A13-SOM/Outdated%20Sunxi%20Images/sd/A13_SOM_Debian_kernel_34_90_512MB_mainline_u-boot_04022015_release_2.7z A13-SOM-512 Debian Linux with kernel 3.4.90+, suitable for boards with SAMSUNG DDR3 RAM]
 +
 
 +
Direct download location for Debian release 1 - suitable for boards with HYNIX H5TQ2G83CFR DDR3 RAM memory: : [https://ftp.olimex.com/Allwinner_Images/A13-SOM/Outdated%20Sunxi%20Images/sd/A13_SOM_Debian_kernel_34_90_100kHz_I2C_WIFI_USB_LAN_X_touch_512MB_release_1.7z A13-SOM-512 Debian Linux with kernel 3.4.90+, suitable for boards with HYNIX DDR3 RAM]
  
 
The image features:
 
The image features:
  
 
*Linux Kernel 3.4.90+
 
*Linux Kernel 3.4.90+
*XFCE4 desktop environment
+
*LXDE desktop environment
 
*Mplayer CLI
 
*Mplayer CLI
 
*GCC 4.6
 
*GCC 4.6
Line 86: Line 108:
 
=== Android ===
 
=== Android ===
  
Note that the Android is suitable only for the [https://www.olimex.com/Products/SOM/A13/A13-SOM-512/ A13-SOM-512] version of the board (the 256 version of the board is not equipped with enough RAM to run Android smoothly). To upload the Android to the NAND you would also need [https://www.olimex.com/Products/SOM/A13/A13-SOM-WIFI-4GB/open-source-hardware A13-SOM-WIFI-4GB] (to extend the board with NAND flash memory).
+
The Android images are suitable only for the [https://www.olimex.com/Products/SOM/A13/A13-SOM-512/ A13-SOM-512] version of the board (the 256 version of the board is not equipped with enough RAM to run Android smoothly). You can boot Android from SD card or the on-board NAND memory. However, in order to upload the Android to the NAND you would also need [https://www.olimex.com/Products/SOM/A13/A13-SOM-WIFI-4GB/open-source-hardware A13-SOM-WIFI-4GB] (to extend the board with NAND flash memory).
 +
 
 +
The Android images don't have software buttons implemented, use the HOME/UBOOT button to navigate back if you are stuck in a menu and want to return to the main screen!
 +
 
 +
The board would enter "Sleep" mode after 30 minutes. If you wish to keep it awake start the AutoStartService application in the APPS section. You have to start it again after power down. You can try with other applications - keep alive and keep screen on applications from Google Play Store.
 +
<br>
 +
==== Android for NAND ====
 +
 
 +
Torrent of Android 4.2.2 release 1 for NAND memory with 720p HDMI and 800x480 (7 inch display) video support: [https://ftp.olimex.com/Allwinner_Images/A13-SOM/Android/nand/A13_SOM_512/A13_SOM_android_4.22_NAND_release_1.img A13-SOM-512 Android for NAND with HDMI and 7 inch display support]
  
Torrent of Android 4.2.2 release 1 for NAND memory: [[Media:A13_SOM_android_4.22_NAND_release_1.torrent‎‎‎|A13-SOM-512 Android for NAND]]
+
Torrent of Android 4.2.2 release 1 for NAND memory with 720p HDMI and 1024x600 (10 inch display) video support: [https://ftp.olimex.com/Allwinner_Images/A13-SOM/Android/nand/A13_SOM_512/A13_SOM_android_4.22_NAND_LCD10_release_1.img ‎A13-SOM-512 Android for NAND with HDMI and 10 inch display support]
  
Direct download of Android 4.2.2 release 1 NAND memory: [https://drive.google.com/file/d/0B-bAEPML8fwlLU15am9tVFRIclE/edit?usp=sharing A13-SOM-512 Android for NAND]
+
The build instructions for the latest Android images might be found in this wiki article: [[A13-SOM-building-Android-NAND|building Android for A13-SOM-512 (with support for HYNIX or SAMSUNG RAM memory)]]
  
 
The image is with these features:
 
The image is with these features:
 
*Android 4.2.2
 
*Android 4.2.2
*NAND image i.e. will work only on [A13-SOM-512+A13-SOM-WIFI-4GB]
+
*NAND image will work only on '''A13-SOM-512+A13-SOM-WIFI-4GB'''
*Supports [https://www.olimex.com/Products/OLinuXino/A13/A13-LCD7-TS 7" LCD 800x480 pixels]
+
*MicroSD card image will work on '''A13-SOM-512+A13-SOM-WIFI''' and '''A13-SOM-512+A13-SOM-WIFI-4GB'''
 +
*Different images support [https://www.olimex.com/Products/OLinuXino/LCD/LCD-OLinuXino-7/open-source-hardware 7" LCD 800x480 pixels] and [https://www.olimex.com/Products/OLinuXino/LCD/LCD-OLinuXino-10TS/open-source-hardware 10" LCD 1024x600 pixels]  
 
*Touchscreen supported
 
*Touchscreen supported
 
*GPIO support
 
*GPIO support
Line 107: Line 138:
 
*Buttons
 
*Buttons
 
<br>
 
<br>
 +
 +
==== Android for microSD card ====
 +
Direct download for A13-SOM-512 Android 4.2.2 release 1 for microSD card with 800x480 (7 inch display) video support: [https://drive.google.com/open?id=0BwplT87k9SCgWFBKV2hkcE8yckU A13-SOM-512 Android for microSD card 7 inch display support]
 +
 +
Direct download for A13-SOM-512 Android release 1 for microSD card with 480x272 (4.3 inch display) video support: [[https://ftp.olimex.com/Allwinner_Images/A13-SOM/Android/sd/A13_SOM_Android_SD_4_3_inches_LCD.zip Torrent A13-SOM-512 Android for microSD card 4.3 inch display support]]
 +
 +
Extract and download the image the same way as Debian for microSD card (Win32DiskImager or "dd") as explained above.
 +
 +
== Notable unofficial images ==
 +
 +
Below you would find locations to images released by the community. These are not officially supported by Olimex, however, some of these releases are pretty good and worth a try:
 +
 +
*A13-SOM has support in armbian by Igor Pečovnik. The configuration might be found here: https://github.com/igorpecovnik/lib/tree/master/config/boards ; beginner help can be found in the documentation and in the forums: https://docs.armbian.com/
 +
  
 
== Documents ==
 
== Documents ==
Line 122: Line 167:
  
  
A13-SOM can be powered from:
+
If used as a stand-alone board A13-SOM can be powered from:
  
*+3.3V voltage applied to GPIO-1
+
*+3.3V power source, applied to GPIO-1 connector
 +
<br>
 +
Typical power consumption is as follows:
  
Power consumption is as follows:
+
*A13-SOM-512 + A13-SOM-WIFI-4GB running Debian - consumption: 0.45A @ 5V
*
+
*A13-SOM-512 + A13-SOM-WIFI-4GB + A13-LCD7-TS running Debian - consumption: 0.75A @ 5V
 +
*A13-SOM-512 + A13-SOM-WIFI-4GB + A13-LCD7-TS running Android - consumption: 0.40A @ 5V
 +
<br>
 +
Additionally, if used together with A13-SOM-WIFI the whole setup can be powered from:
 +
 
 +
*+5V via miniUSB cable, applied to USB_OTG connector
 +
 
 +
*+5V power source, applied to the +5V pin near the red PWR_LED
 +
<br>
  
 
===Board dimensions===
 
===Board dimensions===
Line 140: Line 195:
 
A13-SOM-WIFI schematic and CAD files are at [https://github.com/OLIMEX/SOM/tree/master/A13/A13-SOM-WIFI GitHub]
 
A13-SOM-WIFI schematic and CAD files are at [https://github.com/OLIMEX/SOM/tree/master/A13/A13-SOM-WIFI GitHub]
  
The CAD product used to design A13-SOM-WIFI is Eagle and you can download evaluation free version from their [http://www.cadsoftusa.com/ web].
+
The CAD product used to design A13-SOM-WIFI is Eagle and you can download evaluation free version from their [http://www.cadsoftusa.com/ web-site].
 
 
  
 
===Board Layout===
 
===Board Layout===
Line 159: Line 213:
 
[https://pypi.python.org/pypi/pyA13SOM Link to pyA13SOM package at python.org]
 
[https://pypi.python.org/pypi/pyA13SOM Link to pyA13SOM package at python.org]
  
===GPIO under Linux===
+
===GPIO under Debian Linux===
 +
 
 +
The GPIOs are defined in the script.bin of the Debian distribution. If you edit the script.bin you can change the names of the GPIOs. You can also remove the definitions for certain pins or add additional ones that we might have missed.
 +
 
 +
Inside the Debian Linux the GPIOs are located in /sys/class/gpio directory. Before using a GPIO you would need to export it.
 +
 
 +
There is an easy way to export all GPIOs:
 +
 
 +
  mount -t debugfs none /sys/kernel/debug
 +
  for i in `seq 1 1 230`; do echo $i > /sys/class/gpio/export; done
 +
 
 +
To list all available GPIOs write:
  
'''GPIO''' - they are located in /sys/class/gpio directory. Note that first you have to export GPIOs. For example: to add PB03
+
  cat /sys/kernel/debug/gpio
 +
 
 +
This would return:
 +
 
 +
  gpio-1  (sysfs              ) in  hi
 +
  gpio-2  (sysfs              ) in  hi
 +
  gpio-3  (sysfs              ) out hi
 +
  gpio-4  (sysfs              ) in  lo
 +
  gpio-5  (sysfs              ) in  lo
 +
  gpio-6  (sysfs              ) in  lo
 +
  gpio-7  (sysfs              ) in  lo
 +
  gpio-8  (sysfs              ) in  lo
 +
  gpio-9  (sysfs              ) in  lo
 +
  gpio-10  (sysfs              ) in  hi
 +
  gpio-11  (sysfs              ) in  lo
 +
  gpio-12  (sysfs              ) in  lo
 +
  gpio-13  (sysfs              ) in  hi
 +
  gpio-14  (sysfs              ) in  lo
 +
 
 +
The rest of the GPIOs have to be defined in the fex. Refer to this wiki article: [[How_to_edit_board_configurations_and_definitions_in_the_official_Debian_Linux|how to edit board configurations and definitions]]
 +
 
 +
An example for a single port add is below (PB03):
  
 
     root@A13:~# echo 1 > /sys/class/gpio/export
 
     root@A13:~# echo 1 > /sys/class/gpio/export
Line 176: Line 262:
  
 
     root@A13:~# echo 0 > /sys/class/gpio/gpio1_pb3/value
 
     root@A13:~# echo 0 > /sys/class/gpio/gpio1_pb3/value
 
Full list with supported GPIOs is:
 
 
    gpio12_pg9  gpio1_pb3  gpio4_pe4  gpio7_pe7
 
    gpio10_pe10  gpio13_pg10  gpio2_pb4  gpio5_pe5  gpio8_pe8
 
    gpio11_pe11  gpio14_pg11  gpio3_pb10  gpio6_pe6  gpio9_pe9
 
  
 
note that:
 
note that:
Line 189: Line 269:
 
== How To? ==
 
== How To? ==
  
===How to correctly power off OLinuXino running from NAND Flash===
 
[http://olimex.wordpress.com/2014/01/24/how-to-correctly-power-off-olinuxino-running-android/ In this Blog post] we explain what are the problems. This is common problem for all computers running OS. [http://www.linux-mtd.infradead.org/doc/ubifs.html#L_ubifs_mlc Here] you can read more about MLC NAND Flash and Linux file system.
 
 
===How to generate boot-able SD-card Debian Linux image for A13-SOM? ===
 
===How to generate boot-able SD-card Debian Linux image for A13-SOM? ===
  
The building instructions might be found in this document: [https://drive.google.com/file/d/0B-bAEPML8fwla3NhVGdwbGthOXM/edit?usp=sharing Google drive mirror]
+
The building instructions for the latest images might be found in this wiki article: [[A13-SOM-building-latest-Debian|building Debian for A13-SOM-256 and A13-SOM-512 (with support for XYNIX or SAMSUNG RAM memory)]]
  
Official Wordpress post on Debian image release: [https://olimex.wordpress.com/2014/06/23/a13-som-xxx-debian-build-with-kernel-3-4-90-and-many-new-features/ Wordpress post]
+
Wordpress post on the building the previous (now outdated) Debian image (suitable only for boards with HYNIX memories, does not work properly with boards with SAMSUNG memories): [https://olimex.wordpress.com/2014/06/23/a13-som-xxx-debian-build-with-kernel-3-4-90-and-many-new-features/ wordpress post]
  
 
===How do I write the Linux image to a micro SD card to use with my A13-SOM board?===
 
===How do I write the Linux image to a micro SD card to use with my A13-SOM board?===
Line 205: Line 283:
 
*Select file
 
*Select file
 
*Click "write"
 
*Click "write"
 
  
 
To write a Linux image to an SD card under Linux:
 
To write a Linux image to an SD card under Linux:
Line 215: Line 292:
 
* # cp debian_2g.img /dev/sdX
 
* # cp debian_2g.img /dev/sdX
  
 +
where X is the uSD card.
  
where X is the uSD card.
+
===How to change HDMI, VGA and LCD resolutions under Debian?===
  
===How to change HDMI, VGA and LCD resolutions?===
+
The default SD card setup is made with settings for 7 inch LCD 800x480.
  
The default SD card setup is made with settings for HDMI 720p/60Hz. If you want to change to some other LCD, VGA or HDMI resolution then you have to start change_display.sh script file in /root directory.
+
If you want to change to video output to other LCD (or in rare cases VGA) resolution under Debian then you have to start change_display.sh script file in /root directory.
  
Type:
+
For Linux Debian you would need to execute a shell script to be able to change the resolution. It is very good idea to use a serial cable for connection to the board from a personal computer since in this case you are dependent on a video resolution (a cable like USB-SERIAL-CABLE-F). If you want to change to some other LCD, VGA or HDMI resolution then you have to start change_display.sh script file in /root directory. When you are logged as super user in the board type:
    ./change_display*
 
or
 
    ./change_display_A13.sh
 
and press "Enter". 
 
  
Then choose the resolution and the interface(LCD, HDMI or VGA). Note that the selection of a specific resolution is done by navigating with the arrow keys and pressing "space" button. Make sure the asterisk marks your selection properly.
+
  For Debian Wheezy releases: ./change_display* (* = press 'tab' to auto-complete)
 +
  For Debian Jessie releases: change_display* (* = press 'tab' to auto-complete)
  
The supported resolutions are:
+
and press "Enter".
  
'''For LCD:'''
+
'''Note that the script should be executed as super user. Under the command line interface you are automatically logged as super user (user "root", password "olimex"). However, under the graphical environment you are not auto-logged as super user and you must type "sudo" before the command (in the GUI the super-user is "olimex" and the password is "olimex")'''
  
*1. 4.3" (480x272)
+
Choose the resolution and the interface (LCD or VGA). Note that VGA output is hard to implement and requires both additional hardware and good soldering experience. The supported resolutions are:
*2. 7" (800x480)
 
*3. 10" (1024x600)
 
*4. 15.6" (1366x768)
 
  
Important: initially the boards are calibrated for a specific display. If you re-write the image (no matter whether the SD card or the NAND memory) you would need to use a mouse to calibrate the display initially. It might be impossible to calibrate it via touching the display.
+
For LCD:
  
'''For HDMI:'''
+
# 4.3" (480×272)
 +
# 7" (800×480)
 +
# 10" (1024×600)
  
*0. 480i
 
*1. 576i
 
*2. 480p
 
*3. 576p
 
*4. 720p50
 
*5. 720p60
 
*6. 1080i50
 
*7. 1080i60
 
*8. 1080p24
 
*9. 1080p50
 
*10. 1080p60
 
  
'''For VGA:''' (note that the VGA signals are routed to custom 6 pin connector and you need from adapter to standard VGA connector)
+
For VGA (A13-SOM lacks VGA support on hardware level):
  
*0. 1680x1050
+
# 1680×1050
*1. 1440x900
+
# 1440×900
*2. 1360x768
+
# 1360×768
*3. 1280x1024
+
# 1280×1024
*4. 1024x768
+
# 1024×768
*5. 800x600
+
# 800×600
*6. 640x480
+
# 640×480
*7. 1920x1080
+
# 1920×1080
*8. 1280x720
+
# 1280×720
 
<br>
 
<br>
  
===How to control PWM under Linux? ===
+
===How to edit board configurations and definitions in the official Debian Linux? ===
There is an article here: [[how to add pwm]]
+
 
 +
There is a separate article on the subject here: [[How_to_edit_board_configurations_and_definitions_in_the_official_Debian_Linux|editing the script.bin  configurations]]
 +
 
 +
===How to properly calibrate a display under Debian===
 +
If the problem is under Debian Linux make sure you are properly logged in the LXDE interface! Else applying calibration would not happen for the current user - if you are calibrating from the X graphical interface make sure that you are logged as user “olimex” (if calibrating without the X, the user is “root”).
 +
 
 +
  #su olimex
 +
enter the olimex password:olimex
  
===How to edit board configurations and definitions in the official Debian Linux? ===
+
    #sudo ts_calibrate
 +
calibrate the touch screen and reboot the board
  
The biggest part of the board configuration might be edited, changed or improved in a file called script.bin
+
    #sudo reboot
  
The script.bin file can usually be found in the main directory of a microSD card prepared with official Debian image. The folder containing the script can be inspected under both Windows, Linux or Mac.
+
It would be a good idea to test with Android or another Debian image also, it has a built-in calibration application by default.
  
You can't directly edit binary file so you would need to convert it to text format (it is called fex in this case), then edit the parameters via a text editor and finally switch it back to binary format.
+
===How to control PWM under Linux? ===
 +
There is an article here: [[how to add pwm]]
  
The different options for the script are explained here: [http://linux-sunxi.org/Fex_Guide SUNXI FEX GUIDE]
+
===How to correctly power off OLinuXino running from NAND Flash===
 +
[http://olimex.wordpress.com/2014/01/24/how-to-correctly-power-off-olinuxino-running-android/ In this blog post] we explain what are the problems of sudden power down. This is common problem for all computers running an OS made specifically for handheld devices. [http://www.linux-mtd.infradead.org/doc/ubifs.html#L_ubifs_mlc Here] you can read more about MLC NAND Flash and Linux file system.
  
IMPORTANT! ADJUSTING SCRIPT.BIN WITH IMPROPER VALUES MIGHT BREAK YOUR DEBIAN IMAGE AND IT IS ALWAYS RECOMMENDED TO KEEP A BACK-UP OF YOUR DEFAULT SCRIPT.BIN
+
===How to restore the Android image on NAND Flash===
  
To convert back and fort the script.bin you might use different tools. You can find Windows tools here: [https://github.com/OLIMEX/OLINUXINO/tree/master/SOFTWARE/fex-bin-convertor-windows SUNXI TOOLS FOR WINDOWS] . For Linux convertors please check the sunxi tools here: [https://github.com/linux-sunxi/sunxi-tools SUNXI TOOLS]
+
Android corruption might happen if the A13-SOM-512 and A13-SOM-WIFI setup loses suddenly all power supply. In that case you can restore the Android image. Download an Android image from above (there are two images available one for 7 inch display and the other for 10 inch display), then follow the algorithm:
  
Note that it is possible to change the script.bin in a running Debian image in newest releases! More information might be found at the end of the document! Not all releases feature the live method of changing fex to bin so if you board doesn't have it follow the other methods.
+
1. Install and run LiveSuit software (can be found here: [https://docs.google.com/file/d/0B7WHuNCASY8cWlZ2djh4X0QtV0U/edit?usp=sharing]).
  
Changing script.bin file without removing the microSD card:
+
2. Go to “SelectImg” tab of the program and point to a valid Android image (the latest official one may also be downloaded above).
  
The tools for script.bin changing are located in /opt/sunxi-tools directory
+
3. Disconnect the power supply and USB cable from the A13 board.
<nowiki># cd /opt/sunxi-tools</nowiki>
 
<nowiki># ./chscr.sh</nowiki>
 
This will convert script.bin file from sdcard to script.fex file and the file  will be opened using nano editor.
 
Now you can change the board modules and parameters, save the changes and exit from nano editor
 
<nowiki># ./wrscr.sh</nowiki>
 
this will convert script.fex to script.bin and the script.bin file will be written to sdcard.
 
  
===How to properly calibrate a display under Debian===
+
4. Press and hold HOME button, apply power supply 5V, release HOME button.
If the problem is under Debian Linux make sure you are properly logged in the XFCE interface! Else applying calibration would not happen for the current user - if you are calibrating from the X graphical interface make sure that you are logged as user “olimex” (if calibrating without the X, the user is “root”).
 
  
  #su olimex
+
5. Connect USB cable to the mini USB connector.
enter the olimex password:olimex
 
  
    #sudo ts_calibrate
+
6. You will be asked for drivers for the bootloader. Navigate to the folder where you extracted the LiveSuit and install the drivers from the respective executable (or manually point the installer to the drivers folder in the LiveSuit’s installation path).
calibrate the touch screen and reboot the board
 
  
    #sudo reboot
+
7. LiveSuit will detect the board and would ask for the method of writing the image. Choose method of writing the image and confirm your wish to write the image.
  
It would be a good idea to test with Android or another Debian image also, it has a built-in calibration application by default.  
+
8. Wait till upgrade succeeds
  
 
===How to add STK1160 video capture driver support in Kernel 3.4===
 
===How to add STK1160 video capture driver support in Kernel 3.4===

Latest revision as of 00:03, 8 December 2021

A13-SOM-1.jpeg A13-SOM-2.jpeg


A13-SOM-XXX features:

  • A13 Cortex-A8 CPU and Mali 400 GPU
  • 256 or 512MB DDR3 RAM memory
  • Power supply managment
  • 1x LCD connector
  • 3x GPIO connectors
  • MicroSD card connector
  • DEBUG-UART connector for console debug with USB-SERIAL-CABLE-F
  • status LED
  • Power LED
  • RESET button
  • 3.3V input power supply
  • PCB dimensions: 61 x 33 mm


Official Images from OLIMEX

Linux

A13-SOM-256

Newest official Debian releases (recommended):

Direct FTP download location of Debian release #2: Debian 4GB SD-card image release 2 with hardware accelerated video and more

Build instructions for the latest image: https://github.com/OLIMEX/OLINUXINO/blob/master/SOFTWARE/A13/A13-SOM-build/A13_SOM_kernel_3.4.90_building_description_with_mainline_u-boot_2.txt

Older Debian releases (not recommended):

Direct download location of Debian release #1: A13-SOM-256 Debian 4GB SD-card image release-1 with hardware accelerated video and more

A13-SOM-512

Please note that the RAM memory of A13-SOM-512 was changed again in revision G to SAMSUNG K4B4G1646D-BYK0 (previously it used memories SAMSUNG K4B2G0846Q and even older hardware reviisons used HYNIX H5TQ2G83CFR, older boards might require older Linux images).

Newest official Debian releases (recommended):

Direct download of release 4 preliminary Linux image - suitable for boards with SAMSUNG K4B4G1646D-BYK0 DDR3 RAM memory: A13-SOM-512 Debian Linux with kernel 3.4.90+ in case of problems test with the previous release 3.

The build instructions for the latest Debian images might be found in this wiki article: building Debian for A13-SOM-256 and A13-SOM-512 (with support for HYNIX or SAMSUNG RAM memory)

Older Debian releases (not recommended):

Direct download of release 3 preliminary Linux image - suitable for boards with SAMSUNG K4B2G0846Q DDR3 RAM memory: A13-SOM-512 Debian Linux with kernel 3.4.90+ in case of problems test with the previous release 2.

Direct download location for Debian release 2 image - suitable for boards with SAMSUNG K4B2G0846Q DDR3 RAM memory: A13-SOM-512 Debian Linux with kernel 3.4.90+, suitable for boards with SAMSUNG DDR3 RAM

Direct download location for Debian release 1 - suitable for boards with HYNIX H5TQ2G83CFR DDR3 RAM memory: : A13-SOM-512 Debian Linux with kernel 3.4.90+, suitable for boards with HYNIX DDR3 RAM

The image features:

  • Linux Kernel 3.4.90+
  • LXDE desktop environment
  • Mplayer CLI
  • GCC 4.6
  • 4.3"(480x272), 7"(800x480), 10" (1024x600) and 15.6" (1366x768) LCD and touchscreen support
  • GPIO
  • I2C
  • USB WIFI RTL8188CU, Ethernet AX88772B
  • dpkg
  • git
  • i2c-tools
  • perl
  • xorg
  • Python 2.7
  • USB-ETHERNET-AX88772B
  • MOD-WIFI-RTL8188
  • A13-LCD 4.3″TS 4.3″ LCD with backlight and touchscreen 480×272 pixels
  • A13-LCD7″TS 7″ LCD with backlight and touchscreen 800×480 pixels
  • A10-LCD10″TS 10.1″ LCD with backlight and touchscreen 1024×600 pixels
  • Micro SD card
  • OTG USB
  • HIGH SPEED HOST1 USB
  • I2C2(100KHz)
  • I2C1(100KHz)
  • Default Login: root/olimex


Tested board peripherals with this image:

  • GPIO - located at /sys/class/gpio
  • LCD - supported are A13-LCD4.3TS, A13-LCD7TS, A13-LCD10TS
  • Touch screen - you need calibrate LCD before using touch screen. Type: ts_calibrate and then test it with ts_test
  • ASIX 8877 USB-LAN - USB-ETHERNET-AX88772B
  • RTL8188CU - MOD-WIFI-RTL8188
  • USB_OTG - works as OTG device and Low/Full/High USB host
  • USB_HOST - works as Low/Full/High USB host
  • mico_SD_card - allow Linux boot
  • I2C2(100KHz) - /dev/i2c-2
  • I2C1(100KHz) - /dev/i2c-1


Note: the A13-SOM-Debian-SD card which we have in our web store contains the same image on 4GB Class10 fast micro SDcard, if you want to use this image please use card of Class10 speed or the performance of Linux will be very slow.

Note: in the previous Debian releases the Ethernet was auto-detected and initialized during boot BUT this was causing big delays in the start-up of the board if you didn't want to use Ethernet or if there wasn't Ethernet cable connected.

You can enable it by following these two steps:

1. To check under what name the LAN is associated write "ifconfig –a"

2. If, for example, it is under eth0 name, then write: "dhclient eth0"

This should enable the Ethernet and then SSH would also be available.

Android

The Android images are suitable only for the A13-SOM-512 version of the board (the 256 version of the board is not equipped with enough RAM to run Android smoothly). You can boot Android from SD card or the on-board NAND memory. However, in order to upload the Android to the NAND you would also need A13-SOM-WIFI-4GB (to extend the board with NAND flash memory).

The Android images don't have software buttons implemented, use the HOME/UBOOT button to navigate back if you are stuck in a menu and want to return to the main screen!

The board would enter "Sleep" mode after 30 minutes. If you wish to keep it awake start the AutoStartService application in the APPS section. You have to start it again after power down. You can try with other applications - keep alive and keep screen on applications from Google Play Store.

Android for NAND

Torrent of Android 4.2.2 release 1 for NAND memory with 720p HDMI and 800x480 (7 inch display) video support: A13-SOM-512 Android for NAND with HDMI and 7 inch display support

Torrent of Android 4.2.2 release 1 for NAND memory with 720p HDMI and 1024x600 (10 inch display) video support: ‎A13-SOM-512 Android for NAND with HDMI and 10 inch display support

The build instructions for the latest Android images might be found in this wiki article: building Android for A13-SOM-512 (with support for HYNIX or SAMSUNG RAM memory)

The image is with these features:

  • Android 4.2.2
  • NAND image will work only on A13-SOM-512+A13-SOM-WIFI-4GB
  • MicroSD card image will work on A13-SOM-512+A13-SOM-WIFI and A13-SOM-512+A13-SOM-WIFI-4GB
  • Different images support 7" LCD 800x480 pixels and 10" LCD 1024x600 pixels
  • Touchscreen supported
  • GPIO support
  • USB-Ethernet ASIX 88772
  • USB-WIFI RTL8188
  • USB-OTG support USB device and USB host with Low/Full/High speed
  • USB-HOST-top Low/Full/High speed
  • micro SD card
  • I2C1
  • I2C2
  • Buttons


Android for microSD card

Direct download for A13-SOM-512 Android 4.2.2 release 1 for microSD card with 800x480 (7 inch display) video support: A13-SOM-512 Android for microSD card 7 inch display support

Direct download for A13-SOM-512 Android release 1 for microSD card with 480x272 (4.3 inch display) video support: [Torrent A13-SOM-512 Android for microSD card 4.3 inch display support]

Extract and download the image the same way as Debian for microSD card (Win32DiskImager or "dd") as explained above.

Notable unofficial images

Below you would find locations to images released by the community. These are not officially supported by Olimex, however, some of these releases are pretty good and worth a try:


Documents

A13 Datasheet

A13 datasheet

A13 User Manual

A13 Users manual

Hardware

Power supply and consumption

If used as a stand-alone board A13-SOM can be powered from:

  • +3.3V power source, applied to GPIO-1 connector


Typical power consumption is as follows:

  • A13-SOM-512 + A13-SOM-WIFI-4GB running Debian - consumption: 0.45A @ 5V
  • A13-SOM-512 + A13-SOM-WIFI-4GB + A13-LCD7-TS running Debian - consumption: 0.75A @ 5V
  • A13-SOM-512 + A13-SOM-WIFI-4GB + A13-LCD7-TS running Android - consumption: 0.40A @ 5V


Additionally, if used together with A13-SOM-WIFI the whole setup can be powered from:

  • +5V via miniUSB cable, applied to USB_OTG connector
  • +5V power source, applied to the +5V pin near the red PWR_LED


Board dimensions

A13-SOM-XXX basic dimensions might be seen in the picture here: A13-SOM board dimensions

Schematic

A13-SOM-256/512 schemaitc is available at GitHub

A13-SOM-WIFI schematic and CAD files are at GitHub

The CAD product used to design A13-SOM-WIFI is Eagle and you can download evaluation free version from their web-site.

Board Layout

A13-SOM-512.png

Software

Linux Commands

Linux-Commands Brief Linux Command reference

Python

The Debian Linux Python package for A13-SOM is called pyA13SOM. It is installed in the default Debian image. More information and examples on how it can be used might be found here:

Link to pyA13SOM package at python.org

GPIO under Debian Linux

The GPIOs are defined in the script.bin of the Debian distribution. If you edit the script.bin you can change the names of the GPIOs. You can also remove the definitions for certain pins or add additional ones that we might have missed.

Inside the Debian Linux the GPIOs are located in /sys/class/gpio directory. Before using a GPIO you would need to export it.

There is an easy way to export all GPIOs:

 mount -t debugfs none /sys/kernel/debug
 for i in `seq 1 1 230`; do echo $i > /sys/class/gpio/export; done

To list all available GPIOs write:

 cat /sys/kernel/debug/gpio

This would return:

 gpio-1   (sysfs               ) in  hi
 gpio-2   (sysfs               ) in  hi
 gpio-3   (sysfs               ) out hi
 gpio-4   (sysfs               ) in  lo
 gpio-5   (sysfs               ) in  lo
 gpio-6   (sysfs               ) in  lo
 gpio-7   (sysfs               ) in  lo
 gpio-8   (sysfs               ) in  lo
 gpio-9   (sysfs               ) in  lo
 gpio-10  (sysfs               ) in  hi
 gpio-11  (sysfs               ) in  lo
 gpio-12  (sysfs               ) in  lo
 gpio-13  (sysfs               ) in  hi
 gpio-14  (sysfs               ) in  lo

The rest of the GPIOs have to be defined in the fex. Refer to this wiki article: how to edit board configurations and definitions

An example for a single port add is below (PB03):

   root@A13:~# echo 1 > /sys/class/gpio/export

to make PB03 output

   root@A13:~# echo out > /sys/class/gpio/gpio1_pb3/direction

to make PB03 high level(3.3V)

   root@A13:~# echo 1 > /sys/class/gpio/gpio1_pb3/value

to make PB03 low level(0V)

   root@A13:~# echo 0 > /sys/class/gpio/gpio1_pb3/value

note that:

There might be multiplexing on some of the pins especially if you are using a shield! Consider that when picking a GPIO. Refer to the schematics of the board and the shield for clearer view of the possible multiplexing locations.

How To?

How to generate boot-able SD-card Debian Linux image for A13-SOM?

The building instructions for the latest images might be found in this wiki article: building Debian for A13-SOM-256 and A13-SOM-512 (with support for XYNIX or SAMSUNG RAM memory)

Wordpress post on the building the previous (now outdated) Debian image (suitable only for boards with HYNIX memories, does not work properly with boards with SAMSUNG memories): wordpress post

How do I write the Linux image to a micro SD card to use with my A13-SOM board?

To write a Linux image to an SD card under Windows we use Win32 Disk Imager):

  • Download Win32 Disk Imager Win32 Disk Imager
  • Insert card
  • Start program
  • Select file
  • Click "write"

To write a Linux image to an SD card under Linux:

For instance you have an image with the file name of "debian_2g.img". It would be downloaded to the SD card connected to a Linux machine using one of the following commands:

  • # dd bs=4M oflag=sync if=debian_2g.img of=/dev/sdX

or

  • # cp debian_2g.img /dev/sdX

where X is the uSD card.

How to change HDMI, VGA and LCD resolutions under Debian?

The default SD card setup is made with settings for 7 inch LCD 800x480.

If you want to change to video output to other LCD (or in rare cases VGA) resolution under Debian then you have to start change_display.sh script file in /root directory.

For Linux Debian you would need to execute a shell script to be able to change the resolution. It is very good idea to use a serial cable for connection to the board from a personal computer since in this case you are dependent on a video resolution (a cable like USB-SERIAL-CABLE-F). If you want to change to some other LCD, VGA or HDMI resolution then you have to start change_display.sh script file in /root directory. When you are logged as super user in the board type:

  For Debian Wheezy releases: ./change_display* (* = press 'tab' to auto-complete)
  For Debian Jessie releases: change_display* (* = press 'tab' to auto-complete)

and press "Enter".

Note that the script should be executed as super user. Under the command line interface you are automatically logged as super user (user "root", password "olimex"). However, under the graphical environment you are not auto-logged as super user and you must type "sudo" before the command (in the GUI the super-user is "olimex" and the password is "olimex")

Choose the resolution and the interface (LCD or VGA). Note that VGA output is hard to implement and requires both additional hardware and good soldering experience. The supported resolutions are:

For LCD:

  1. 4.3" (480×272)
  2. 7" (800×480)
  3. 10" (1024×600)


For VGA (A13-SOM lacks VGA support on hardware level):

  1. 1680×1050
  2. 1440×900
  3. 1360×768
  4. 1280×1024
  5. 1024×768
  6. 800×600
  7. 640×480
  8. 1920×1080
  9. 1280×720


How to edit board configurations and definitions in the official Debian Linux?

There is a separate article on the subject here: editing the script.bin configurations

How to properly calibrate a display under Debian

If the problem is under Debian Linux make sure you are properly logged in the LXDE interface! Else applying calibration would not happen for the current user - if you are calibrating from the X graphical interface make sure that you are logged as user “olimex” (if calibrating without the X, the user is “root”).

  #su olimex

enter the olimex password:olimex

   #sudo ts_calibrate

calibrate the touch screen and reboot the board

   #sudo reboot

It would be a good idea to test with Android or another Debian image also, it has a built-in calibration application by default.

How to control PWM under Linux?

There is an article here: how to add pwm

How to correctly power off OLinuXino running from NAND Flash

In this blog post we explain what are the problems of sudden power down. This is common problem for all computers running an OS made specifically for handheld devices. Here you can read more about MLC NAND Flash and Linux file system.

How to restore the Android image on NAND Flash

Android corruption might happen if the A13-SOM-512 and A13-SOM-WIFI setup loses suddenly all power supply. In that case you can restore the Android image. Download an Android image from above (there are two images available one for 7 inch display and the other for 10 inch display), then follow the algorithm:

1. Install and run LiveSuit software (can be found here: [1]).

2. Go to “SelectImg” tab of the program and point to a valid Android image (the latest official one may also be downloaded above).

3. Disconnect the power supply and USB cable from the A13 board.

4. Press and hold HOME button, apply power supply 5V, release HOME button.

5. Connect USB cable to the mini USB connector.

6. You will be asked for drivers for the bootloader. Navigate to the folder where you extracted the LiveSuit and install the drivers from the respective executable (or manually point the installer to the drivers folder in the LiveSuit’s installation path).

7. LiveSuit will detect the board and would ask for the method of writing the image. Choose method of writing the image and confirm your wish to write the image.

8. Wait till upgrade succeeds

How to add STK1160 video capture driver support in Kernel 3.4

STK1160 driver backport by Dimitar Tomov


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