Hello, I set up the environment by This. Now I can ping the device on the raspberry pi. How ever, When I run the python client example on My ubuntu-14.04 and try to connect the bluetooth. the result is "aiocoap.error.RequestTimedOut".
I connect the rpi to my pc by a cable and each of them can ping each other. My connection is like this:
PC<-cable->RPI <-bluetooth->PCA10028