search

merbanan / rtl_433

Program to decode radio transmissions from devices on the ISM bands (and other frequencies)
GNU General Public License v2.0
6.15k stars 1.33k forks source link

variant of the somfy-rts protocol? #3038

Open xjazzor opened 3 months ago

xjazzor commented 3 months ago

Hi there, I have some Roller Shades at home, which seem to be using the Somfy-RTS protocoll. I sniffed some packets with the rtl_433-plugin for SDR# as seen here: grafik You can see, everything is recognised except Lines 8 and up. These are the lines, where I want to program a new remote onto the shade. If I press the same "buttons" on the virtual remote from the great EspSomfy (https://github.com/rstrouse/ESPSomfy-RTS) I get the following: grafik Are my shades on a different protocol, or do I need to edit something? I can provide more info if needed and want to solve this riddle :D

zuckschwerdt commented 3 months ago

If you can try listening with current rtl_433. Try -R 167:vv to get the raw packets also. There are some senders with extra data or slightly different meaning, see https://github.com/merbanan/rtl_433/blob/master/src/devices/somfy_rts.c

xjazzor commented 3 months ago

Thank you for your help! I pulled the data from rtl_433 and attached the readout as a file. As an excerpt, here are some readouts from down, stop, up and then program: (Attention: the examples below are not directly one after the other. The counter increments in single steps)

` time : 2024-08-21 20:00:55 model : Somfy-RTS id : C5154A Control : Down (8) Counter : 1086 Retransmission: 1 Integrity : CHECKSUM [pulse_slicer_pcm] Somfy RTS codes : {179}f0f0f0f0f0f0f0fe696a965a966a9996a95aaa695a5a0 [pulse_slicer_pcm] Somfy RTS codes : {139}f0f0fe696a965996699996a95aaa695a5a0 [somfy_rts_decode] seed=0x98, chksum=0x5

time : 2024-08-21 20:00:58 model : Somfy-RTS id : C5154A Control : Stop (5) Counter : 1088 Retransmission: 1 Integrity : CHECKSUM [pulse_slicer_pcm] Somfy RTS codes : {180}f0f0f0f0f0f0f0fe6999969996a9a6a99665955665650 [somfy_rts_decode] seed=0x95, chksum=0x0

time : 2024-08-21 20:01:00 model : Somfy-RTS id : C5154A Control : Up (6) Counter : 1089 Retransmission: 1 Integrity : CHECKSUM [pulse_slicer_pcm] Somfy RTS codes : {180}f0f0f0f0f0f0f0fe6996969a96aaa6a99665955665650 [somfy_rts_decode] seed=0x96, chksum=0x2

time : 2024-08-21 20:01:16 model : Somfy-RTS id : C5154A Control : ? (12) Counter : 1091 Retransmission: 1 Integrity : CHECKSUM [pulse_slicer_pcm] Somfy RTS codes : {180}f0f0f0f0f0f0f0fe695a969696a6a6a99665955665650 [somfy_rts_decode] seed=0x9c, chksum=0xa

time : 2024-08-21 20:01:16 model : Somfy-RTS id : C5154A Control : ? (12) Counter : 1091 Retransmission: 1 Integrity : CHECKSUM [pulse_slicer_pcm] Somfy RTS codes : {180}f0f0f0f0f0f0f0fe695a969696a6a6a99665955665650 [somfy_rtsdecode] seed=0x9c, chksum=0xa _`

From my - somewhat limited perspective - it looks, like the remote just spams its id with another seed code - Before it was 0x95 now its 0x9c. I'm just gessing here. ;)

somfy-like-packets.txt

zuckschwerdt commented 3 months ago

Those codes are great to analyze this. Maybe @matthiasseemoo (original author in #1496) and @Velocet (good info in #2356) can help?

xjazzor commented 2 months ago

Should I provide more packets/ recordings? Can I help in any way? My second remote died and I can't find any shop to buy a new one. Therefore I want this to work. ;)

Velocet commented 1 month ago

There are many RTS variants (at least 5 .. RTS, RTD, RTDS, RTW, RTN..). In case of RTS there are two different protocol modes which differ in length but are compatible to one and another.

You can find my notes i did for somfy-rts here: RTx: Somfy RTS and its different versions

xjazzor commented 1 month ago

There are many RTS variants (at least 5 .. RTS, RTD, RTDS, RTW, RTN..). In case of RTS there are two different protocol modes which differ in length but are compatible to one and another.

I am with you that they are nearly compatible. Sadly I can't get espsomfy to be paired with my blinds because that parts seems to differ. Maybe in this protocol the pairing sequence is only the remote-id repated 7times?

gdt commented 3 weeks ago

Where are we on this? Is there a path to a PR to improve rtl_433, or should we just close it?

xjazzor commented 3 weeks ago

I would love to see a PR to improve rtl_433, as I believe it could benefit not only me but others as well.