Hi Adam
I'm looking at the CC13xx and as far as I remember is has a Coretex-M3
running. I have 2 CC1350's on my desk and will most likely start to run
them in the next 2 weeks, If all is goes well with my current projects.
We are running Contiki on our MSP430 with CC1120 and CC1190 (PA) for our
OpenWSN mesh network implementation. Debugging is a major issue on
Contiki so I will be loading RIOT and see what is required in terms of
porting
TI suggested that I wait for version 2 of the silicon of the CC1350 It
should have been release end of Q3 of this year, I'm still
waiting...... The TI rep will be here today I hope ......
Any suggestions on the porting process?
Kind regards
Ben
On 2015-11-14 04:33 PM, Adam Hunt wrote:
Has anyone taken a look at TI's CC2560 or C1310 processors? They're
both based on an a Cortex-M3 processor clocked up to 48 MHz and work
in the 2.4 GHz and sub-1 GHz bands respectively. I haven't had a
chance to read all the documentation yet but they appear similar to
the CC2538, aside from one part, they both have a Cortex-M0 based "RF
Core" softMAC supporting 802.15.4, 6lowpan, BLE, and ZigBee stacks..
Unfortunately, the datasheets state "The ARM Cortex-M0 processor is
not programmable by customers." While this may mean that it's not
possible to write a custom MAC or port RIOT's to the M0 these could
still prove to be useful chips. The documentation states that an image
for the softMAC is stored in an chip ROM but it does seem to be field
upgradeable but I'm not clear if this is only possible by patching the
image stored in ROM each boot or if the patch is permanent opening a
potential avenue for custom M0 firmware. The documentation doesn't
include complete register documentation for the M0 but it at least
includes the names of the registers. I'm not sure if debug access is
enabled on the M0 but I would be fairly surprised if it were.
Both chips also contain a "sensor controller" CPU that can be
configured to monitor various peripherals even while the main
processor is in standby mode which sounds like a nice way to further
reduce power consumption. I haven't had time to investigate how this
processor is configured and programmed.
Anyways, even if the embedded softMAC isn't user programmable these
look like interesting chips. Seeing as they only cost US$29 I'll
probably buy TI's CC2650 based "SensorTag"[1] dev platform and if I'm
feeling especially adventurous give porting RIOT to it a try.
--adam
[1] www.ti.com/sensortag <http://www.ti.com/sensortag>
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