on_new_messages.py

def on_new_messages(self, messages):
    if 'brake' in messages:
        print("Braking signal received...")
        print(messages['brake'].data)
        brake_action = messages['brake'].data
        if brake_action:
            self.cm.DVA_write(self.brake_quant, 1)
        else:
            self.cm.DVA_write(self.brake_quant, 0)
    if 'steer_sign' in messages:
        print("Steering message received..")
        print("steering value " + str(messages['steer_sign'].data))
        self.cm.DVA_write(self.steer_quant, messages['steer_sign'].data)