Goal: Send a command through a serial port to a mote to make it send a 6P packet.
...
- set /dev/myAwesomeMote 6pAdd [6,7]
This would send the following bytes over the serial bus towards the mote:
- [67, 9, 2, 6, 7] in decimal
Explanation:
- 67 indicates the char 'C', the mote can recognize this is a command, rather a packet send to mote. https://github.com/openwsn-berkeley/openwsn-sw/blob/develop/software/openvisualizer/openvisualizer/moteConnector/OpenParser.py#L22
- 9 is the commandId for 6pAdd https://github.com/openwsn-berkeley/openwsn-sw/blob/develop/software/openvisualizer/openvisualizer/moteState/moteState.py#L416
- 2 is the length of the payload of 6pAdd command (in bytes)
- 6 and 7 are the two bytes of data.
Now we are going to send it over a ZMQ socket. To do that we will use the following script:
| Code Block | ||
|---|---|---|
| ||
#!/usr/bin/env python import zmq zmq_inject_port = 60000 d = {"signal": "cmdToMote", "data": {"action": ["imageCommand", "6pAdd", "[6,7]"], "serialPort": "/dev/ttyUSB1myAwesomeMote"}, "sender": "mySender"} context = zmq.Context() publisher = context.socket(zmq.REQ) publisher.connect("tcp://localhost:60000"%d" % zmq_inject_port) publisher.send_json(d) |
You can tell whether a given 6P request passed or failed depending on the its return code that are . Return codes are documented there:
https://github.com/openwsn-berkeley/openwsn-fw/blob/develop/openstack/02b-MAChigh/sixtop.h