COM AM35 Linux: Difference between revisions

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==<br/>FAQ ==
=== Ethernet does not work ===
Check if the line "allow-hotplug eth0" in the file "/etc/network/interfaces" is activated. You can activate the ethernet interface on a running system with the command:
:{| class="wikitable"
|<code>''ifconfig eth0 up''</code>
|}
=== How to set a Linux environment variable? ===
This example shows you how to configure the system to use a proxy-server with a environment variable.
:{| class="wikitable"
|<code>''export http_proxy=http://192.168.xxx.xxx:xxxx</code>
|}
==<br/>Debian system ==
==<br/>Debian system ==
=== Calibrating the touchscreen ===
=== Calibrating the touchscreen ===
$ TSLIB_TSDEVICE=/dev/input/event0 ts_calibrate
:{| class="wikitable"
|<code>''ts_calibrate''</code>
|}
:Check the enviroment variable "TSLIB_TSDEVICE=/dev/input/event0" with <code> printenv </code> if an error occurs.
 
===Running example Qt Apps ===
===Running example Qt Apps ===
Run demos with touch-screen as input device:
:{| class="wikitable"
|<code>''/usr/qt/demos/demoname/demoname -qws''</code>
|}
:For the Qt-Browser change <code>demoname</code> to <code>browser</code>
:If the touchscreen does not work please check the enviroment variable "QWS_MOUSE_PROTO=Tslib:/dev/input/event0" with <code> printenv</code>.


$ QWS_MOUSE_PROTO=Tslib:/dev/input/event0 /usr/qt/demos/demoname/demoname -qws
For the Qt-Browser change demoname to browser


Run demos with a usb-mouse as input device:
Run demos with a usb-mouse as input device:
$ QWS_MOUSE_PROTO=Auto:/dev/input/mice /usr/qt/demos/demoname/demoname -qws
:{| class="wikitable"
|<code>''/QWS_MOUSE_PROTO=Auto:/dev/input/mice /usr/qt/demos/demoname/demoname -qwsqws''</code>
|}
 


=== Login/Shutdown system ===
=== Login/Shutdown system ===
Login:
:{| class="wikitable" style="width: 120px"
  Name:     root
||Username: ||root
  password: foo
|-
   
||Password: ||foo
Shutdown:
  |}
  $ shutdown -h now
:{| class="wikitable"
|<code>''shutdown -h now''</code>
|}
 


==<br/>How to control the GPIOs ==
==<br/>How to control the GPIOs ==

Revision as of 08:31, 16 July 2012


FAQ

Ethernet does not work

Check if the line "allow-hotplug eth0" in the file "/etc/network/interfaces" is activated. You can activate the ethernet interface on a running system with the command:

ifconfig eth0 up

How to set a Linux environment variable?

This example shows you how to configure the system to use a proxy-server with a environment variable.

export http_proxy=http://192.168.xxx.xxx:xxxx


Debian system

Calibrating the touchscreen

ts_calibrate
Check the enviroment variable "TSLIB_TSDEVICE=/dev/input/event0" with printenv if an error occurs.

Running example Qt Apps

/usr/qt/demos/demoname/demoname -qws
For the Qt-Browser change demoname to browser
If the touchscreen does not work please check the enviroment variable "QWS_MOUSE_PROTO=Tslib:/dev/input/event0" with printenv.


Run demos with a usb-mouse as input device:

/QWS_MOUSE_PROTO=Auto:/dev/input/mice /usr/qt/demos/demoname/demoname -qwsqws


Login/Shutdown system

Username: root
Password: foo
shutdown -h now



How to control the GPIOs

DHCOM Name: alt. DHCOM Name: SO-DIMM Pin# Linux <GPIO#>
GPIO A 154 116
GPIO B 156 117
GPIO C 162 118
GPIO D 163 119
GPIO E 164 125
GPIO F 165 140
GPIO G 167 141
GPIO H 173 155
GPIO I 175 152
CIF HSYNC GPIO J 74 96
CIF PCLK GPIO K 72 94
CIF MCLK GPIO L 70 58
CIF VSYNC GPIO M 68 97
CIF D9 GPIO N 66 98
CIF D8 GPIO O 64 95
CIF D7 GPIO P 62 106
CIF D6 GPIO Q 60 105
CIF D5 GPIO R 58 104
CIF D4 GPIO S 56 103
CIF D3 GPIO T 54 102
CIF D2 GPIO U 52 101
CIF D1 GPIO V 50 100
CIF D0 GPIO W 48 99
Remark: Depending on your board configuration some of the additional gpios shared with the camera interface are not available on your system.
Export
echo <GPIO#> >/sys/class/gpio/export
Remark: Have a look into /sys/class/gpio/ for already configured gpios.
Set direction
echo in >/sys/class/gpio/gpio<GPIO#>/direction
echo out >/sys/class/gpio/gpio<GPIO#>/direction
Set state
echo 0 >/sys/class/gpio/gpio<GPIO#>/value
echo 1 >/sys/class/gpio/gpio<GPIO#>/value

Initialize and test CAN

Initialize:
  $ ip link set can0 up type can bitrate 500000

Send test message via cansend (part of can-utils):
  $ cansend can0 100#11.2233.44556677.88
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