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→How to use Telit Modem
A detailed guide on how use UARTS can be found by following this link: [[How to use UARTs]]
== How to use Telit Modem LEDs =={| align="right" cellspacing="1" cellpadding="1" border="1" width="200"|-| [[Image:IGEP0022 Modem with antenna.png|200px]] | [[Image:Igepv2expcardreader.PNG|right|200px]]|-| GSM-GPRS antenna (highly recommended) | SIM card reader|} IGEPv2 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 IGEPv2 Expansion. Configure this [[How_do_I_edit_my_kernel_command_line | adding following kernel cmdline parameter]] buddy.modem=yes *Power up the modem using the next commands:<pre>$ echo 0 > /sys/class/gpio/gpio140/value$ echo 1 > /sys/class/gpio/gpio141/value$ sleep 1$ echo 0 > /sys/class/gpio/gpio141/value</pre> *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:<pre>$ microcom -s 115200 /dev/ttyO1</pre> *To check the modem status use the command:<br><pre>at</pre> *Answer should be OK.<br> *Now unlock it by inserting your SIM card PIN number. Use the command:<pre>at+cpin=<PIN></pre> *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.<br>''From [[How to use Telit Modem]]''
== How to use TVP5151 Video Decoder ==