GPIO-7 and GPIO-8 not working

We are trying to use GPIO-7 and GPIO-8 of J12 connector. Exported the gpio pins(gpio4/gpio7) and set the values to high and low. However they are not working.

To make these pins work do we need to change fex file?

Appreciate quick response!!

Regards, Sudhir

you can try wiringpi, refer to

We did try and the values are changing from 1 to 0 and 0 to 1. However the there is no change on voltage at pin level.

are you use M1+ or M1 board.???

GPIO7 and GPIO8 of J12 are GND, try with beside header CON3