What can I do with IGEP0022
From IGEP - ISEE Wiki
(work in progress)
Contents
How to enable IGEP0022 support
The required kernel command line option here is
buddy=igep0022
Getting VGA output
The required kernel command line option here is omapfb.mode followed by the desired resolution, make sure to select a video mode compatible with your monitor
For example:
omapdss.def_disp=dvi omapfb.mode=dvi:1024x768-16@60
Note that you could connect both a VGA monitor and a DVI-D monitor and see the same image, as long as the video mode is compatible with both monitors.
Using TFT and Touchscreen
Seiko 7.0 inch WVGA (800 x RGB x 480) TFT:
omapdss.def_disp=lcd-70
Powertip 4.3 inch (480 x RGB x 272) TFT:
omapdss.def_disp=lcd-43
To configure the touchscreen, add "Configured Touchscreen" in "ServerLayout" section and remove "Configured Mouse"
Section "ServerLayout" Identifier "Default Layout" Screen "Default Screen" InputDevice "Generic Keyboard" # InputDevice "Configured Mouse" InputDevice "Configured Touchscreen" Option "AllowEmptyInput" "no" EndSection
calibrate it yourself until you are happy with the result, for example:
/etc/init.d/xserver-nodm stop TSLIB_CALIBFILE=/etc/pointercal TSLIB_TSDEVICE=/dev/input/touchscreen0 TSLIB_CONSOLEDEVICE=none ts_calibrate /etc/init.d/xserver-nodm start
Using Telit Modem
The IGEP0022 expansion board provides a Telit GE865<span style="text-decoration: underline;" /> GSM/GPRS modem which is connected to the OMAP via some GPIO pins and UART 2.
Here you have the official manuals from the manufacturer's webpage:
Here there are a few instructions in order to introduce the Telit modem:
Enable Telit Modem support
If this is your first time accessing Telit Modem, you must add the following line at the kernel file (igep.ini) in order to enable GE865 support :
buddy.modem=yes
Power Up
The manufacturer hardware user guide explains the complete sequence to power up the modem.
The modem is connected to 3 GPIO pins from the OMAP, which are: <omap_pin_name (modem_function)>
- GPIO_140 (Reset)
- GPIO_141 (On_Off)
- GPIO_157 (PWRMON)
You can power up your modem using the following sequence:
(Note: instructions are correctly 'toggled' do to pull-up resistors)
echo 0 > /sys/class/gpio/gpio140/value # Sets to '1' the modem Reset pin echo 1 > /sys/class/gpio/gpio141/value # Sets to '0' the modem On_Off pin echo 0 > /sys/class/gpio/gpio141/value # Sets to '1' the modem On_Off pin
Setting up
Once the modem is on, 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/ttyS1 # GE865 has auto baud rate detection, so you can use a different speed
Using TVP5151 Video Decoder
Using EEPROM
The IGEP0022 expansion board provides an AT24C01B serial EEPROM memory which is connected to the OMAP via I2C.
You can use easily simple reads/writes to access to the eeprom:
echo "hello world!" > /sys/devices/platform/i2c_omap.2/i2c-2/2-0050/eeprom cat /sys/devices/platform/i2c_omap.2/i2c-2/2-0050/eeprom
Or read/write from userspace using i2c-tools:
i2cget <bus> <chip> <register> i2cset <bus> <chip> <register> <value>
For example, the following writes the value 0x22 to register 0x10 of device 0x50 on i2c bus 2:
i2cset -f -y 2 0x50 0x10 0x22 i2cget -f -y 2 0x50 0x10
See also: i2dump(8), i2cget(8) and i2cset(8) man page
Using CAN bus
Several tools are provided by socketCAN:
- candump: dump traffic on a CAN network
- cansend: simple command line tool to send CAN-frames via CAN_RAW sockets
- cangen: CAN frames generator for testing purpose
- canplayer: send CAN frames from a file to a CAN interface
/sbin/ip link set can0 up type can bitrate 125000
On the receiver side:
candump can0
On the sender side:
cansend can0 123#AABBCCDD cansend can0 123#R cansend can0 1F334455#1122334455667788 cansend can0 1F334455#R
On the receiver side, you must see the following messages:
can0 123 [4] AA BB CC DD can0 123 [0] remote request can0 1F334455 [8] 11 22 33 44 55 66 77 88 can0 1F334455 [0] remote request
Switch roles and do again
