Scratch socket communication

oliver.w.chen · November 30, 2018, 6:47pm

Hi, I was able to use the Intel Movidus Neural Compute Stick with Scratch and the GrovePI using remote sensors functionality for one I am labeling as NCS; however, I see in the Scratch Controller window messages like:

GrovePi Scratch: Error <type ‘exceptions.ValueError’>
Rx: NCS
Ignoring ncs
Rx: Infer …
Ignoring infer …

The extra messages are from my python code to interface with the NCS.

Is there a way to change the verbosity of the Scratch Controller, so this isn’t shown. It’s distracting to first time coders.

Is there documentation on what messages the GrovePi uses over socket communications like interfacing with the PICam that I found? I would like to reuse code if it is already there.

cleoqc · November 30, 2018, 7:39pm

The "Ignoring " comes from this line:

github.com

DexterInd/GrovePi/blob/master/Software/Scratch/GrovePiScratch.py#L377


            print("Issue with espeak")


    # PIVOTPI
    elif pivotpi_available==True and PivotPiScratch.isPivotPiMsg(msg):
        pivotsensors = PivotPiScratch.handlePivotPi(msg)
        # print "Back from PivotPi",pivotsensors
        s.sensorupdate(pivotsensors)


    else:
        if en_debug:
            print "Ignoring: ",msg




                
except KeyboardInterrupt:
    running= False
    print "GrovePi Scratch: Disconnected from Scratch"
    break
except (scratch.ScratchConnectionError,NameError) as e: #bug fix simonw 22Mar18
    while True:
        #thread1.join(0)

It means your broadcast has not been recognised as a valid Scratch command. If you change

github.com

DexterInd/GrovePi/blob/master/Software/Scratch/GrovePiScratch.py#L71


cameraFolder = defaultCameraFolder




# Pi user ID Number - used for setting permissions
pi_user=1000
pi_group=1000


# used is GrovePi is actually connected - allows for testing without a GrovePi
en_grovepi=1
# print debugging statements
en_debug=1


try:
s = scratch.Scratch()
if s.connected:
    print "GrovePi Scratch: Connected to Scratch successfully"
#else:
#sys.exit(0)
except scratch.ScratchError:
print "GrovePi Scratch: Scratch is either not opened or remote sensor connections aren't enabled"
#sys.exit(0)

so it reads en_debug=0 it will take care of the majority, if not all, of the messages.