I have just basic user knowledge of Raspberry but if I understand it correctly, the driver should allow non-root access to GPIO pins: https://github.com/raspberrypi/linux/blob/rpi-4.4.y/drivers/char/broadcom/bcm2835-gpiomem.c I use Rpi3 with Fedora 25 for running Home Assistant and I would like to meassure temperature and humidity directly on Rpi3. I have discovered the gpiomem module while looking into the source code of DHT22 driver from Adafruit: https://github.com/adafruit/Adafruit_Python_DHT/blob/master/source/Raspberry_Pi_2/pi_2_mmio.c int fd = open("/dev/gpiomem", O_RDWR | O_SYNC); Then I googled little bit more and realized, that the gpiomem driver is used quite often: https://www.npmjs.com/package/rpio http://wiringpi.com/wiringpi-update-to-2-29/ Michal _______________________________________________ arm mailing list -- arm@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to arm-leave@xxxxxxxxxxxxxxxxxxxxxxx
