Show pageOld revisionsBacklinksAdd to bookExport to PDFBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== GPIO on Radxa ====== * [[http://radxa.com/Rock/extension_header|Headers schema]] * [[http://android.serverbox.ch/?p=972|Android APP that read GPIO]] Power on blue led <code bash> echo default-on > /sys/class/leds/blue/trigger </code> Power off <code bash> echo none > /sys/class/leds/blue/trigger </code> Header J8 |1|2| |3|4| |5|6| |7 OUT|8| |9 IN|10| |11|12| ^name^n^pin^header^ |0_A7|167|7|J8| |0_B1|169|9|J8| |PWM2|285|11|J8| Input on pin 169 (GPIO0_B1) (pin n°9 su J8) <code bash> # input on pin 9 echo 169 > /sys/class/gpio/export echo in > /sys/class/gpio/gpio169/direction echo rising > /sys/class/gpio/gpio169/edge cat /sys/class/gpio/gpio169/value # output on pin 7 echo 167 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio167/direction # on echo 1 > /sys/class/gpio/gpio167/value # off echo 0 > /sys/class/gpio/gpio167/value </code> tips/radxa/gpio.txt Last modified: 2015/02/21 10:40by scipio