ICT 433MHz Transmitter

Peppy_on_Tour · August 30, 2022, 4:50pm

FM (FSK) 433.92MHz - Deviation 10 kHz - which isn’t supported by Flipper (yet). Is there a way to implement other deviation / Bandwidth-Options to Flipper? Have some Trouble with an other remote too. Wrong deviation.

Rgds
Marco.

puffyfish · August 30, 2022, 5:33pm

I see, is there a doc you are referencing for this info? I wasn’t able to find anything with google searching.
As for custom presets, I think this merged PR may have implemented what we’re looking for? https://github.com/flipperdevices/flipperzero-firmware/pull/1398

I don’t really know how the registers work, or how to use this PR to add new presets though

Peppy_on_Tour · August 30, 2022, 5:54pm

Have to take a look. indeed it is implemented… will try some configs and post my results.

Spildit · August 30, 2022, 6:48pm

Example …

github.com

UberGuidoZ/Flipper/blob/main/Sub-GHz/Settings/setting_user

Filetype: Flipper SubGhz Setting File
Version: 1
#
# Add All Standard frequencies
Add_standard_frequencies: false
#
# Default Frequency: used as default for "Read" and "Read Raw"
Default_frequency: 433920000
#
# Frequencies used for "Read", "Read Raw" and "Frequency Analyzer" - they added after default ones if enabled in Add_standard_frequencies
Frequency: 300000000
Frequency: 302757000
Frequency: 303875000
Frequency: 304250000
Frequency: 307000000
Frequency: 307500000
Frequency: 307800000
Frequency: 309000000
Frequency: 310000000
Frequency: 312000000

This file has been truncated. show original

Need to edit settings_user on sdcard. This adds Honda1 and Honda2 presets. Don’t have a clue about how to implement your specific deviation.

And yes … no luck with your files …

puffyfish · August 30, 2022, 7:03pm

hmmm, i see that this is the settings for the built in modulations:

github.com

flipperdevices/flipperzero-firmware/blob/e7a5d19f9c919c1bc5c49f53f93b6ac8bec03b2b/firmware/targets/f7/furi_hal/furi_hal_subghz_configs.h

#pragma once

#include <cc1101.h>

static const uint8_t furi_hal_subghz_preset_ook_270khz_async_regs[][2] = {
    // https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz-group/sub-1-ghz/f/sub-1-ghz-forum/382066/cc1101---don-t-know-the-correct-registers-configuration

    /* GPIO GD0 */
    {CC1101_IOCFG0, 0x0D}, // GD0 as async serial data output/input

    /* FIFO and internals */
    {CC1101_FIFOTHR, 0x47}, // The only important bit is ADC_RETENTION, FIFO Tx=33 Rx=32

    /* Packet engine */
    {CC1101_PKTCTRL0, 0x32}, // Async, continious, no whitening

    /* Frequency Synthesizer Control */
    {CC1101_FSCTRL1, 0x06}, // IF = (26*10^6) / (2^10) * 0x06 = 152343.75Hz

    // Modem Configuration

This file has been truncated. show original

idk how to apply that to the settings_user file though…

Peppy_on_Tour · August 30, 2022, 8:13pm

#2-FSK 200khz BW / 135kHz Filter/ 12.69Khz Deviation + Ramping
Custom_preset_name: FSK12k
Custom_preset_module: CC1101
Custom_preset_data: 02 0D 03 47 08 32 0B 06 15 30 14 00 13 00 12 00 11 32 10 A7 18 18 19 1D 1D 92 1C 00 1B 04 20 FB 22 17 21 B6 00 00 00 12 0E 34 60 C5 C1 C0

This works for my remote… FM / 2-FSK / 10kHz Deviation.

EDIT: Correct 2-FSK-Parameter for Flipper incl. TX

puffyfish · August 30, 2022, 9:12pm

Are you using read or raw?

Still not able to read with “Read” option.
Heres the raw that i’m picking up:
FSK10k.sub (14.1 KB)

Peppy_on_Tour · August 31, 2022, 4:07am

I use read. If you own a sdr receiver, you can take a Look in the spectrum and see if it is fm or am. Maybe i’m wrong with fm for your remote.

Spildit · August 31, 2022, 7:41am

Maybe @Skorp can help us out ?
Maybe the problem is not with modulation/frequency but with protocol itself like your remote using something different from the supported keeloq ?

SkorP · August 31, 2022, 8:46am

maybe I can help. but from the photo I can tell that hcs300 is Keelog. but the antenna is attached to another K110 chip, I don’t know what it is. in full it is possible that the transmission is not in AM modulation. to say for sure, I need to record the package in the sdrsharp program. everything will be visible there. and the frequency and modulation of the signal. and you can record at the same frequency in URH. to be able to reproduce it. but I don’t know how to name it on coffee grounds

SkorP · August 31, 2022, 8:49am

and looking at this graph, I only ask you to assume that the modulation is not AM there

Peppy_on_Tour · August 31, 2022, 1:01pm

This is 2FSK. So if jou get this image in RF Spectrum with your SDR Receiver, then you can be sure this is FM.

And this is ASK / OOK

puffyfish · August 31, 2022, 1:36pm

I see, sadly I don’t have access to a sdr, maybe I’ll get one soon and continue this thread. But I appreciate the help y’all have provided

puffyfish · August 31, 2022, 3:17pm

Found some more info about the k110B3 chip.
It looks like it appeared in a car remote: key problem | Peugeot Forums
And in that forum the person included the datasheet!
infineon-tdk5100-ds-v01-01-en-2802267.pdf (616.1 KB)

And based on the pinout and the PCB it looks like all the ASK pins are disconnected, so it seems like it indeed is operating on FSK

SkorP · August 31, 2022, 4:18pm

very strange chip) but it’s still unclear what the deviation of the signal is

puffyfish · August 31, 2022, 4:29pm

Ok, I placed an order for an SDR, hopefully should have more results in coming days.

Peppy_on_Tour · August 31, 2022, 6:43pm

Typical deviation for this Chip is 30khz.

Spildit · August 31, 2022, 7:23pm

Would you be able to provide a Custom_preset for the 30khz deviation, 2-FSK ? Maybe @puffyfish can try that ?

Peppy_on_Tour · September 1, 2022, 4:29am

#2-FSK 200khz BW / 135kHz Filter/ 12.69Khz Deviation + Ramping
Custom_preset_name: FSK12k
Custom_preset_module: CC1101
Custom_preset_data: 02 0D 03 47 08 32 0B 06 15 30 14 00 13 00 12 00 11 32 10 A7 18 18 19 1D 1D 92 1C 00 1B 04 20 FB 22 17 21 B6 00 00 00 12 0E 34 60 C5 C1 C0

#2-FSK 200khz BW / 135kHz Filter/ 25.39Khz Deviation + Ramping
Custom_preset_name: FSK25k
Custom_preset_module: CC1101
Custom_preset_data: 02 0D 03 47 08 32 0B 06 15 40 14 00 13 00 12 00 11 32 10 A7 18 18 19 1D 1D 92 1C 00 1B 04 20 FB 22 17 21 B6 00 00 00 12 0E 34 60 C5 C1 C0

#2-FSK 200khz BW / 135kHz Filter/ 31.73Khz Deviation + Ramping
Custom_preset_name: FSK31k
Custom_preset_module: CC1101
Custom_preset_data: 02 0D 03 47 08 32 0B 06 15 42 14 00 13 00 12 00 11 32 10 A7 18 18 19 1D 1D 92 1C 00 1B 04 20 FB 22 17 21 B6 00 00 00 12 0E 34 60 C5 C1 C0

Here are my custom presets for narrow FM. one of these should work.

Rgds - Marco.

Spildit · September 1, 2022, 7:46am

Very cool ! Thanks for sharing that !