[Discuss-gnuradio] (Python) Source Block Outputs All 0's

[David Halls]

Hi All,

I have implemented a python source block:

    def __init__(self, kA1=4,kB1=4,k2=4,NA1=8,NB1=8,N2=8,M=8):
        gr.sync_block.__init__(self,
            name="blsd_enc_b",
            in_sig=None,
            out_sig=[numpy.uint8,numpy.uint8])


but I can't get it to output anything but 0's....

    def work(self, input_items, output_items):
        out_cA = output_items[0]
        out_cB = output_items[1]

        out_cA = [ 5, 6, 7, 8, 9, 10 ] #cA[0]
        out_cB = [ 5, 6, 7, 8, 9, 10 ] #cB[0]
        self.produce(0,len(out_cA))
        self.produce(1,len(out_cB))
        print 'out_cA = ', out_cA, ', len(out_cA) = ', len(out_cA)
        print 'out_cB = ', out_cB, ', len(out_cB) = ', len(out_cB)
        return -1 #-2


I connect both outputs to a file sync of type byte, and it stores 6 bytes but its all "\00\00\00\00\00\00"

The print lines give:

out_cA =  [5, 6, 7, 8, 9, 10] , len(out_cA) =  6
out_cB =  [5, 6, 7, 8, 9, 10] , len(out_cB) =  6

as expected.

Any advice?

Regards,

David

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