I have several DS18B20 sensors wired to my Raspberry Pi and wrote a python script to read them all. I've had the script running for months without a problem. Last week I performed an update and an upgrade while my script was running and the pi crashed. The SD card was corrupted and I had to build a new one and now I do not see any of the devices at
/sys/bus/w1/devices. When I type
ls i get nothing, not even the
I have a Raspberry Pi Model B, Revision 2.0, RAM 512 MB, Maker Sony. I am running Linux raspberrypi 3.18.7+ #755 PREEMPT Thu Feb 12 17:14:31 GMT 2015 armv6l GNU/Linux. I double checked my wiring to make sure that there are no shorts or opens. I even got a new sensor and wired it to the pi by itself with same result. Could I have fouled something up while performing the update & upgrade while the script was running? Is there a way to test the GPIO port?