Add CustomRF / SubGhz (help needed)

[eadmaster]

compatibile with flipper sub files
https://github.com/Zero-Sploit/FlipperZero-Subghz-DB

possibly reuse code from my repo.

I am looking for a way to convert sub raw codes to the format supported by the rc-switch lib, if you have some example code, please post here.

[bmorcelli]

what's up @eadmaster ,I really liked your suggestions and I've spoken to pr3y about what you are doing.

We are expecting your Pull Request to merger your Serial CLI solution into Bruce in the next update.

Feel free to contact us on Discord! @bmorcelli or Pirata#5263

[eadmaster]

no problem, i still have to test if the changes i've made did break some other feature (e.g. badUSB)
EDIT: added a test build here.

Regarding this issue, maybe i've found something here, i will try to see if it works.

[bmorcelli]

Nicee!!! I Pulled your repo this morning and I'm making changes over it regarding other Settings and other stuff..

[eadmaster]

I've managed to add an experimental implementation via a new "Custom Subghz" menu, but has some important limitations:

• only 433mhz freq. is supported, due to the RF433T module
• only ASK/OOK supported, for the same reason

Switching to a CC1101 would remove these limitations, but there is no easy way to connect it via a Groove connector afaik.

In order to test if my current implementation is working correctly i need either:

• rtl_433 -a 4 output of one of the remote signals in this repo
• a raw .sub file ripped with a FlipperZero from a remote i own (look for the lines containing RfSend in this file)
• a donation to buy a FlipperZero myself (prolly too much to ask, but will try anyway)

As a bonus, i've added a "Recent" menu to quickly select previously sent commands, but it is still not working correctly (suggestions are welcomed).

[Petitoursbr1]

Hi Mr. Eadmaster,

On this project https://github.com/bmorcelli/io433, you can find a diagram for the connection of a CC1101 to an M5Stick C+.

I don't know if it helps, but I'm trying because I'm very hyped about the project.

[eadmaster]

There are no free Gpio pins on the cardputer, i think i need another solution like this:
https://www.reddit.com/r/M5Stack/comments/17lwkrd/i_was_disappointed_with_the_number_of_useful_pin/
(Which i'd like to avoid)

Maybe a bridge like this would be better, but i am not sure if fast enought for this use case:
https://www.dfrobot.com/product-2002.html
https://learn.adafruit.com/adafruit-mcp23017-i2c-gpio-expander/arduino

[bmorcelli]

We intend to use the ext I/O from M5Stack to integrate with cc1101, but there's a lot of things to consider to make it work, like:

• Voltage issue,going from 5 to 3,3V
• Mimic SPI communication with the Ext I/O (something that needs a lot of study)

Other thing that should work (easily I think) is programming a ESP32S3 mini to interface with CC1101 through SPI and with Cardputer/StickCs with I2C(Grove port)... It would be an easy port though, but will need to buy an extra mcu ..

I have all these devices at home, but need time to make things happen

[eadmaster]

I am not very fond of this solution because:

• would need an extra module + a lot of wiring, reducing the portability of the whole thing (unless a custom PCB or case is also made)
• need to (partially) rewrite the RcSwitch lib to make use of it. May not work correctly for RAW signal streaming due to the higher latency.
• i already have a CC1101 connected via SPI to a regular ESP32 running this Tasmota fork.

Another solution could be using one of these modules, since they only require 1 data pin, you could re-purpose the SDA and SCL pins on the groove connector to drive them directly (e.g G1->TX, G2->RX). I actually have 1 set of these so i might give it a try in the future.

Btw in the meanwhile i'll stick to the RF433T module i already have. Since It is able to use the same codes i've captured on Tasmota (tested with this serial cmd), I am going to add an unofficial protocol to the Subghz File Format to support these codes directly. e.g.:

Filetype: Flipper SubGhz Key File
Version: 1
Frequency: 433920000
Preset: FuriHalSubGhzPresetOok270Async
Protocol: RcSwitch
Bit: 24
Key: 44 55 33
TE: 174

This should correspond to {"Data":"0x445533","Bits":24,"Protocol":1,"Pulse":174,"Repeat":10}'

I've also made this script to generate raw codes, but it not working as expected, so i will use these custom sub files in the meanwhile.

[bmorcelli]

Me neither.. but the only downside of the M5modules and these single pinned modules is that they work only in 433Mhz..

But the thing is, we keep developing for what we have in hand, that are the M5 RF433T and R (that will work with the cheaper ones, regarding the pin setting)

I'm very curious and excited to see your code running in this project..