I'm trying to request mavlink joystick data, but couldn't get it to work, my message request looks like this, i can see the heartbeat but no mnual control data on the bus:
mavlink_message_t data_request_message;
uint8_t system_id = 1;
uint8_t component_id = 1;
uint8_t stream_id = MAVLINK_MSG_ID_MANUAL_CONTROL;
uint16_t message_rate = 10;
uint8_t on_off = 1;
mavlink_msg_data_stream_pack( system_id,
component_id,
&data_request_message,
stream_id,
message_rate,
on_off );
port->write_message(data_request_message);