What can I do with IGEP BERLIN
From IGEP - ISEE Wiki
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Contents
- 1 Overview
- 2 What can I do
Overview
This is the 2/3 chapter of IGEP BERLIN Expansion Tutorial Guide.
We will learn some basic tasks.
What can I do
How to use TFT and Touchscreen
IGEP BERLIN Expansion supports SEIKO 7” LCD screen. Use J200, J203 and J204 connectors to attach screen. See image for more details.Seiko screen is supported by default in IGEP BERLIN, but make sure that it is enable using the following steps:
Edit igep.ini file to configure your touch screen, you can do this adding following kernel cmdline parameter
- Add the following line:
omapdss.def_disp=lcd-70
How to use DVI
IGEP BERLIN has a HDMI connector with a DVI-D interface. IGEP Firmware configures video output with touch screen resolution. For that reason, you should change this configuration parameter to adapt resolution for HDMI output, you can edit following kernel cmdline parameter.
;omapdss.def_disp=lcd-70 omapfb.mode=dvi:1280x720MR-16@60
How to Telit Modem
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| GSM-GPRS antenna (highly recommended) | SIM card reader |
IGEP BERLIN Expansion integrates a GSM/GPRS modem to make phone calls or to send SMS or to write and read data from it, etc. Telit modem is not supported by default in IGEP BERLIN. Configure this adding following kernel cmdline parameter
buddy.modem=yes
- Power up the modem using the next commands:
echo 0 > /sys/class/gpio/gpio145/value echo 1 > /sys/class/gpio/gpio163/value sleep 1 echo 0 > /sys/class/gpio/gpio163/value
- Once the modem is on (led near power button is blinking now), you can interact with it via UART 2.
You can use Microcom to comunicate with it from the serial debug console:
microcom -s 115200 /dev/ttyO1
- To check the modem status use the command:
at
- Answer should be OK.
- Now unlock it by inserting your SIM card PIN number. Use the command:
at+cpin=<PIN>
- If you correctly inserted the PIN number, the answer should be OK. If you fail more than 3 times, your SIM card will lock and you will have to insert PUK number.
- Now you are ready to use the GSM/GPS modem.
How to use to use TVP5151 Video Decoder
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IGEP COM MODULE AND IGEP BERLIN doesn't support video decoder |
Configure TVP5151
- Plug some peripheral with video composite output in J402 rca connector, see the image for more details.
- Connect a screen, for example HDMI monitor.
- Refresh repositories and accept it.
zypper ref
- Install video4linux2 plugin
zypper in gst-plugins-good-video4linux2
Play with TVP5151
- Load OMAP ISP kernel module
modprobe omap3-isp
- Configure ISP, for PAL resulution use 720x576 for NTSC resolution use 720x480 for IGEP BERLIN:
media-ctl -r -l '"tvp5150 3-005d":0->"OMAP3 ISP CCDC":0[1], "OMAP3 ISP CCDC":1->"OMAP3 ISP CCDC output":0[1]' media-ctl -v --set-format '"tvp5150 3-005d":0 [UYVY 720x480]' media-ctl -v --set-format '"OMAP3 ISP CCDC":0 [UYVY 720x480]' media-ctl -v --set-format '"OMAP3 ISP CCDC":1 [UYVY 720x480]'
- Export display
export DISPLAY=:0.0
- Launch gstreamer
gst-launch-0.10 -v v4l2src device=/dev/video2 queue-size=8 ! video/x-raw-yuv,format=\(fourcc\)UYVY,width=720,height=480 ! ffmpegcolorspace ! autovideosink
- Now you can see in your IGEP screen a result similar like this
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From How to setup tvp5151 video decoder
How to use EEPROM
IGEP BERLIN Expansion includes a serial EEPROM, provides 1KB of user data storage. EEPROM is connected through I2C2 of OMAP3 processor at address 0x50.
The following example writes the value 0x22 to register 0x10 of device 0x50 on i2c bus 3:
i2cset -f -y 3 0x51 0x10 0x22 i2cget -f -y 3 0x51 0x10
From How to use EEPROM
How to use CAN Bus
You have to connect the two boards like this:
IGEP BERLIN 1 IGEP BERLIN 2 .--- .--- | 1 |------------------| 1 | CANH : CAN High-Level Voltage I/O | 2 |------------------| 2 | CANL: CAN Low-Level Voltage I/O | 3 |------------------| 3 | GND : Ground | 4 |-X X-| 4 | | 5 |-X X-| 5 | .--- .---
Now you can set up the interface (on all boards when using multiple IGEP BERLIN connected to a CAN network simultaneously):
/bin/ip link set can0 up type can bitrate 125000
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:
can0 123 [4] aa bb cc dd
Switch roles and try it again
How to use serial console
- 115200
- 8N1
- no flow control (either software or hardware)
Open the serial port and the debug shell prompt should appear.
A detailed guide on how to connect via serial debug port can be found by following this link: Using serial debug port to communicate
How to use RS-485
This How-To is meant to be a starting point for people to learn to use RS-485 port on IGEP devices as quickly and easily as possible. We use IGEP YOCTO Firmware and RS485 example which describe how to setup and write data on the RS-485 port.
A detailed guide on how use UARTS can be found by following this link: How to use RS485
Get sound in (audio in)
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).
You can record audio in with the application arecord, for example:
$ arecord -t wav -c 2 -r 44100 -f S16_LE -v audio-in.wav
Following output is expected on console:
Recording WAVE 'audio-in.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo Plug PCM: Hardware PCM card 0 'TWL4030' device 0 subdevice 0 Its setup is: stream : CAPTURE access : RW_INTERLEAVED format : S16_LE subformat : STD channels : 2 rate : 44100 exact rate : 44100 (44100/1) msbits : 16 buffer_size : 32768 period_size : 2048 period_time : 46439 tick_time : 7812 tstamp_mode : NONE period_step : 1 sleep_min : 0 avail_min : 2048 xfer_align : 2048 start_threshold : 1 stop_threshold : 32768 silence_threshold: 0 silence_size : 0 boundary : 1073741824
When ever you think you want to stop recording just press CTRL+C
Get sound out (audio out)
Connect an external output audio device to the 3.5mm jack Audio Out connector in the board, such as external stereo powered speakers.
The amplifiers for the headset output are disabled by default, so the first thing you'll do is enable these amplifiers with:
$ amixer set -D hw:0 'Headset' 0dB $ amixer set -D hw:0 'HeadsetL Mixer AudioL2' on $ amixer set -D hw:0 'HeadsetR Mixer AudioR2' on
Then you can easily play a *.wav sound with the application Aplay, for example:
$ aplay audio-in.wav
You have successfully completed this chapter of the guide.
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