SLIP-Radio support for Econotag

[sdawans]

Kerry Lynn asked about supporting Slip-Radio on Econotag.

I look forward to getting this working with ingredients I have close at hand: namely the
Raspberry Pi with an Econotag radio.  If you already have this recipe handy
then please point me to it, otherwise I shall gain familiarity by first building
the 6lbr for an Ubuntu system and then move to Raspbian.

[sdawans]

What I replied:

You can indeed use the RPi as 6LBR host platform, and the Econotag as a SLIP-radio. 
The application we use for slip-radio is the one in /examples/ipv6/slip-radio and you can build 
it for the econotag target.
Just a small detail - in slip-radio, the border router sends '!C' to the mode to set the 802.15.4 
channel number. Setting the channel number isn't part of the Contiki Radio API, and the 
slip-radio example uses cc2420_set_channel(). We modified the slip-radio example in the 
6LBR repository to support another platform, which has an RF230 radio.
In slip-radio.c, we select a command handler depending on the platform:
    #ifdef CONTIKI_TARGET_SKY
    int cmd_handler_cc2420(const uint8_t *data, int len);
    #elif CONTIKI_TARGET_NOOLIBERRY
    int cmd_handler_rf230(const uint8_t *data, int len);
    #endif /* CONTIKI_TARGET */
An the rest is implemented in target-specific files ( slip-radio-rf230.c and slip-radio-cc2420.c). 
I haven't tested building slip-radio for econotag, but it should be straightforward to build it, and 
fairly easy to add an extra #if and source file to implement econotag-specific channel switching.
My collegue Laurent who is reading this list couldn't stop himself from testing this modification 
as we speak, so half of my email is already outdated :)
We will let you know when it's ready.

[sdawans]

implemented by @laurentderu in 06458cc

[sdawans]

06458cc could be pulled into Contiki as is.
so can 5cca059 (slip radio for nooliberry)

@laurentderu do the top 2 commits on https://github.com/cetic/contiki/tree/slip-radio-platforms look sane to you?

Also, what about modifications in contiki-sky-main.c c67bf67 + 6af36bc ? Do we need this for other slip-radio platforms in 6lbr?

[jonwigwag]

How, do you burn slip-radio_econotag.bin to the econotag. I tried using the ./mcburn.sh that i normally use to flash the econotag. Now in the process when I need to reset ship to start program the econotag doesnt reset. Is there a different way i need to flash econotag?