Method read

lantz/drivers/labjack/_internal/u12.py:534–545

(self, numBytes = 8)

            return writeBuffer
            
    def read(self, numBytes = 8):
        if ON_WINDOWS:
            pass
        else:
            if self.handle is None:
                raise U12Exception("The U12's handle is None. Please open a U12 with open()")
            newA = (ctypes.c_byte*numBytes)()
            readBytes = staticLib.LJUSB_Read(self.handle, ctypes.byref(newA), numBytes)
            # return a list of integers in command/response mode
            result = [(newA[i] & 0xff) for i in range(readBytes)]
            if self.debug: print("Received:", hexWithoutQuotes(result))
            return result


    # Low-level helpers