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__TOC__
$ <pre>echo 0 > /sys/class/gpio/gpio145/value $ echo 1 > /sys/class/gpio/gpio163/value $ sleep 1 $ echo 0 > /sys/class/gpio/gpio163/value</pre>
/bin/$ ip link set can0 up type can bitrate 125000
→How to Telit Modem
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= Overview =
We will learn some basic tasks.
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= What can I do =
By default, Seiko screen is supported in IGEP BERLIN. However open igep.ini, you can do this [[How_do_I_edit_my_kernel_command_line | checking following kernel cmdline parameter]]:
<pre>omapdss.def_disp=lcd-70</pre><br><br>
Finally, edit file: (rootfs)/etc/X11/xorg.conf to enable default touchscreen calibration, xorg.conf touchscreen and ServerLayout sections should look like this:
<pre>Section "InputDevice"
Identifier "Seiko Touchscreen"
Driver "evdev"
Option "Device" "/dev/input/touchscreen0"
# Option "Calibration" "138 3923 311 3962"
EndSection </pre>
<pre>Section "ServerLayout"
Identifier "Builtin Default Layout"
Screen "Builtin Default fbdev Screen 0"
InputDevice "Seiko Touchscreen"
Option "BlankTime" "0"
Option "StandbyTime" "0"
Option "SuspendTime" "0"
Option "OffTime" "0"
EndSection</pre>
== How to use DVI ==
*Power up the modem using the next commands:
*Once the modem is on (led near power button is blinking now), you can interact with it via UART 2.
Now you can set up the interface (on all boards when using multiple IGEP BERLIN <span lang="en" id="result_box" class="short_text"><span title="Click for alternate translations" class="hps">connected to a CAN network simultaneously)</span></span>:<br>
If you want to receive CAN data, use:
$ candump can0
If you want to send CAN data, use:
$ cansend can0 -i 0x123 0xaa 0xbb 0xcc 0xdd
On the receiver side, you must see the following messages:
External Audio input devices, such as a powered microphone or the audio output of a PC or MP3 player, can be connected to the via a 3.5mm jack (Audio IN).
Note that the board has been designed to use Line In for the audio input which means users need to add some type of pre-amp for a microphone to work or use a powered microphone. For a pre-amp for a microphone you can use MAX9812. Enable capture: $ amixer -c 0 sset 'Analog Right AUXR' cap $ amixer -c 0 sset 'Analog Left AUXL' cap You can record audio in with the application arecord, for [http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/Samples/AFsp/M1F1-int32WE-AFsp.wav example]:
$ arecord -t wav -c 2 -r 44100 -f S16_LE -v audio-in.wav
A detailed guide on how use wifi can be found by following this link: [[Using USB ethernet gadget to communicate]]
== How to read analog values (ADC) ==
IGEP BERLIN provides 2 analog inputs on J1206: Maximum allowed analog voltage is 1V8.
[[Image:BASE_BERLIN_CONNECTORS.png|right|300px]]
To protect the ADC input for higher voltages than 1V8, exist a diode protection (Z300). See diagram on the right side.
[[Image:BERLIN_ADC_SCHEMA.png|right|300px]]
To prove the lectures, you have examples codes written in phyton in the ISEE GIT.
[http://git.isee.biz/?p=pub/scm/igep_qa.git;a=blob_plain;f=igep_qa/helpers/madc.py;hb=HEAD Downlaod Python example]
[http://git.isee.biz/?p=pub/scm/igep_qa.git;a=tree;f=igep_qa/helpers;h=e0671966af9f539bdd7628e101c181d8e74dc506;hb=HEAD ->Link to GIT directory]
To read the ADC2 or ADC3 you have to modify one line of code at end of document for the channel 2 or 3.
madc = QMadc(2) or madc = QMadc(3)
You have another example written in c.
[[File:BERLIN_ADC.tar.gz]]
Warning: There is a small deviation in reading values near to 1V8 due to this protection.
The TPS65950 datasheet describes chip can support up to 2.5V at the ADC input .
Datasheet: http://www.ti.com/lit/ds/symlink/tps65950.pdf
Under his responsibility can desolder for more accurate readings.
== How to operate USER LED's ==
On BASE0010 the two leds are available via gpio 19 and 22. See the example below:
=== For D103 LED USER1(GPIO22): ===
We publish the virtual file system to configure elements of the chip via the Linux kernel
mount -t debugfs none /sys/kernel/debug/omap_mux
Set the pin as function gpio22
echo 0x104 > /sys/kernel/debug/omap_mux/etk_d8
Do gpio22 accessible
echo 22 > /sys/class/gpio/export
Configure the pin as output
echo out > /sys/class/gpio/gpio22/direction
LED ON: echo 1 > /sys/class/gpio/gpio22/value
LED OFF:echo 0 > /sys/class/gpio/gpio22/value
=== For D103 LED USER2 (GPIO19): ===
echo 19 > /sys/class/gpio/export
echo out>/sys/class/gpio/gpio19/direction
LED ON: echo 1 > /sys/class/gpio/gpio19/value
LED OFF:echo 0 > /sys/class/gpio/gpio19/value
{{Template:Navigation/IGEP Technology Guides/What can I do/Ending}}
[[Category:IGEP Technology Devices Guides]]
