2 weeks ago - I obtained BeagleBone black. I uninstalled completelly the following services:
Following commands works well:
echo 39 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio39/direction
echo 1 > /sys/class/gpio/gpio39/value
But the GPIO ports flashes with frequency approximatelly 2 HZ. I cannot stop that. The timers aren't initialized. Additionally - I tested with external MMC card and Amstrong image. The situation is the same. I suppose - the processor has hardware defect.
Can you advice me - how to proceed?