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pythonusbcythonhidapi

cython hidapi write error

I am trying to write to a USB device attached to raspberry pi 3 installed with raspbian.

Error:

  File "<stdin>", line 1
    h.write([81 80 73 71 83 183 169 13])
                 ^
SyntaxError: invalid syntax

code

#!/usr/bin/python
import hid

h = hid.device()
h.open(0x0665, 0x5161)
h.set_nonblocking(1)  // Returns 0
h.write([0, 63, 35, 35] + [0] * 61) // Returns -1

h.write([81 80 73 71 83 183 169 13]) //Throws error above.

Whats wrong with this code? Based on the documentation in the library, it accepts any list of integers.

I used this as a ref: https://github.com/trezor/cython-hidapi/blob/master/try.py

Solution

  • Missing comma separation in the list.

    List should be ,(comma) separated,

    Change h.write([81 80 73 71 83 183 169 13])

    to

    h.write([81, 80, 73, 71, 83, 183, 169, 13])