On 03/25/2017 11:48 AM, Dean Hall wrote:
I have used the Semtech SX127x chip that has the proprietary LoRa chirp spread
spectrum modulation (in addition to a few other common modulations, such as
FSK). There are plenty of affordable eval boards, such as this:
https://www.tindie.com/products/DORJI_COM/868mhz-915mhz-sx1276-data-radio-modem-drf1276dm/
(Search for other LoRa products, there are eval boards in Arduino, Raspberry Pi
and Xbee form factors)
The chip has a 256 byte buffer which accommodates 802.15.4, but has no
802.15.4-specific features such as PAN filtering to reduce CPU load. The chip
also has poor timing control of the radio… it’s hard to start a transmission
with microsecond control like you can with some TI radios. So it isn’t exactly
suitable for a protocol with tight timing control.
Thanks for pointing that chip out.
The CC1310 MCU+radio seems great for longer range with 40kbps data throughput, and has a relatively short lock time for changing
frequencies, so hopping modes should be efficient power wise. Some mention of porting CC1310 has been made here.
Any more progress running riot-os on CC1310?
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