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echo 750 > /sys/devices/platform/leds-gpio/leds/d240\:green/delay_off
</pre>
Now the selected led is configured with a timer consisting of 250 miliseconds ON and 750 miliseconds OFF.<br>
= How to use RS-485 =
Follow the link to the extensive article: [[How_to_use_RS485_on_IGEP0020_board|How to use RS-485 on IGEP0020 board]]<br>