[OpenTRV-dev] LoRa

[Bo Herrmannsen]

Hi mike....

have been thinking... you say that the HAB guys use the LoRa radio... are
you sure about that? was on an IRC chat and james said that they have
rejected it on the grounds that its not open source



2015-12-31 11:20 GMT+01:00 Mike Stirling <mail at mikestirling.co.uk>:

> Hi Bo,
>
> The MAC layer (LoRAWAN), which I think Jeremy is referring to, is a public
> spec, but the underlying modulation is not.  You can therefore currently
> only implement a LoRA system using one of Semtech's radios or a module
> based on their IP (e.g. Microchip).  The modulation is some sort of chirp
> spread spectrum system so is non-trivial to reverse engineer, but efforts
> are ongoing in the community.  Once that happens it would be possible to
> implement the physical layer in a software radio if that's what you want.
>
> Note that you can use a LoRA radio without the LoRAWAN MAC (as the HAB
> guys currently do).  In this case it just becomes a proprietary data pipe
> like the RFM22B or RFM12, but with longer range.
>
> Mike
>
> On 29/12/15 10:03, Jeremy Poulter wrote:
>
> From what I understand there is a component that is signed and you can not
> change it but I believe the source will be available at some point. This is
> the component that deals with the time slicing and transmitting so you can
> not send more than you are supposed to.
>
> Jeremy
>
> On 28 December 2015 at 13:37, Bo Herrmannsen <bo.herrmannsen at gmail.com>
> wrote:
>
>> Hi
>>
>> on the topic of using LoRa i have been told that parts of it are closed
>> source in the way that you send data off by AT commands and then "magic"
>> happens
>>
>> Have i been told wrong?
>>
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>>
>
>
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