I have a few basic question on setting the channel.
I am using firmware-tbeam-US-0.7.11.bin
and android 0.7.93
Can the lora frequency be set (I assume it is currently fixed 915MHz on the US firmware) ?
This would be to allow multiple channels frequencies, in-addition to the channel name.
Does the channel options set a Spread Factor ?
Do all devices display what freq and channel option (mode) they are set to ?
I have a follow-on question … concerning what frequency does the country builds
actually specify.
In the master readme.md it has various supported hardware depending on what
country. This leads to a selection of which compiled firmware to choose based on
several supported countries.
This maybe follows the https://github.com/meshtastic/Meshtastic-device/blob/post1/docs/radio-settings.md
Then the code in https://github.com/meshtastic/Meshtastic-device/blob/post1/src/mesh/MeshRadio.h
seems sort of related. It defines variables such as define CH0, CH_SPACING, NUM_CHANNELS
Questions…
I saw a post somewhere … but can’t find it… about changing the android channel name to append it to reflect the actual frequency/mode…
I get lost trying to follow the flow of the various variables.
EDIT: changed the links…
The channel name is hashed and modded to select a channel number, starting from the first channel (CH0).
In my build I show the country identifier and frequency range on the splash screen. Happy to put in a PR if that’s of interest.
I did find something in watching the serial port during startup/reset, there is a line
Starting meshradio init…
Set radio: name=Default, config=3, ch=6, power=23
RF95 init result 0
So I think it is starting at frequency channel 6 which might be
903.08 + (2.16 * 6) = 916.04 MHz