I posted this topic in the R1CBU group but not much going on there so I thought I'd throw it out here to see if were any thoughts on it.
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I have a 6100 (unit 1) using the R1CBU v.28 firmware with great results. I picked up another second hand 6100 (unit 2) and loaded the v.28 firmware. While it loaded fine and some of the features work, unit 2 will not transmit or receive. FYI, the factory tx/rx works fine w/o the R1CBU firmware installed.
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I compared the factory app/base firmware in each unit and find the following:
Unit 1:
App v.1.1.7 8/25/23
Base v.1.1.6 3/7/23
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Unit 2:
App v.1.1.4 2/16/22
Base v.1.1.4? 2/15/22
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My question to the group:
Does the R1CBU firmware rely on the factory firmware in some respects and could the fact that the unit 2 firmware is outdated be the reason for the lack of tx/rx on unit 2? I will update unit 2 firmware if needed.
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Any thoughts would be appreciated.?
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Bob K1FRA
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Re: X6100 BASE firmware with compressor/noise gate
Thank you. I guess it might be due to high mic gain "moves" EMI from gate branch to compressor branch of the transfer curve - and it became amplified stronger,? that without compression. I did some measurements and will try to replace peak detector to RMS detector within the compressor. I guess it will allow to mitigate such situations.
On Fri, Apr 11, 2025 at 01:42 AM, Georgy Dyuldin wrote:
but feedback is appreciated
All seems well with this 1.1.6 base modification. The only thing i noticed is that i have to turn my mic gain down for it to not feedback or make strange sounds (over driven?). I use to run mic gain at 45 with stock mic, now i¡¯m running it at 20-25. If that¡¯s normal with compression enabled, then no issues to report. Thanks much.
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Re: X6100 BASE firmware with compressor/noise gate
On Fri, Apr 11, 2025 at 01:42 AM, Georgy Dyuldin wrote:
but feedback is appreciated
All seems well with this 1.1.6 base modification. The only thing i noticed is that i have to turn my mic gain down for it to not feedback or make strange sounds (over driven?). I use to run mic gain at 45 with stock mic, now i¡¯m running it at 20-25. If that¡¯s normal with compression enabled, then no issues to report. Thanks much.
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Re: Color modified v0.29.2 x6100_gui and sdcard.img
If you had downloaded this on friday or saturday it¡¯s the wrong sdcard.img. I somehow mistakenly uploaded the version i had made before i added Franco¡¯s styles feature. The correct new-theme-sdcard.img is now available from the same link above. Sorry about that.?
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Re: No-code styles customization for R1CBU/R2RFE firmware
Here¡¯s a simple flat gray theme i made with Franco¡¯s new styles feature. Just place the attached styles_custom.txt in your DATA partition of SD card and restart the GUI to activate it.
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Re: Color modified v0.29.2 x6100_gui and sdcard.img
I've released a new sdcard.img with a new theme and Franco's no-code style customization was added as well. It's loosely based on the Simple theme. Download here: ?
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Have a great weekend.
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Re: X6100 BASE firmware with compressor/noise gate
Thanks! I'll give it a good test over the weekend and report any findings good or bad.
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Cheers
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Re: X6100 BASE firmware with compressor/noise gate
1.1.6 with compressor, increased 3 times FM modulation depth and 160 Hz low frequency filter.
Also, I created a branch for patching 1.1.6 in repo above.
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I did only quick testing - looks like all working as expected, but feedback is appreciated.
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Georgy // R2RFE
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Re: X6100 BASE firmware with compressor/noise gate
On Thu, Apr 10, 2025 at 11:44 AM, Georgy Dyuldin wrote:
I'm not sure about simple way to move 1.1.6 NR logic to 1.1.8
Ah, bummer. 1.1.6 with your FM, 160, and Comp additions would be awesome also, but i understand if it can¡¯t be done or is too time consuming with all the other things you have going on. I just live in a high noise floor area and need NR enabled 99% of the time to pull weaker stations out cleanly.
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Cheers
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Re: X6100 BASE firmware with compressor/noise gate
On Thu, Apr 10, 2025 at 07:36 PM, wicknix wrote:
Using the others it sounds like everybody is "under water"
Changing AGC threshold on 1.1.8 is affecting NR effect. I'm not sure about simple way to move 1.1.6 NR logic to 1.1.8
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Georgy // R2RFE
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Re: X6100 BASE firmware with compressor/noise gate
Very cool. I tested it out. Seemed to work ok in my brief testing. However i went back to 1.1.6 base as i dislike the 1.1.7 and 1.1.8 bases because their NR is horrible. The NR in 1.1.6 works and sounds fantastic. Using the others it sounds like everybody is "under water". Any way you could fix 1.1.8 to use 1.1.6¡¯s NR values?
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Cheers
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Re: X6100 BASE firmware with compressor/noise gate
- source code, used for patching.
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Georgy // R2RFE
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Re: X6100 BASE firmware with compressor/noise gate
On Thu, Apr 10, 2025 at 04:19 PM, Daniel Baker wrote:
What¡¯s the easiest way to upgrade this? I do not want to ¡°brick¡± the radio in the process ?
You need to copy this file to transceiver's file system and update with menu of OEM firmware. I described procedure hereGood luck!
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Georgy // R2RFE
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Re: X6100 BASE firmware with compressor/noise gate
On Thu, Apr 10, 2025 at 03:34 PM, Franco Venturi wrote:
Did you compile your code for the STM32 separately as a new function, and then appended it at the end of Xiegu's firmware, and also modified some function pointers to call the new code?
If so, did you also figure out the function call sequence used to process the input from the microphone?
Yes. I created a project with stm32cubemx for target MCU, add offset to the .text section (file size + small gap for helper code) within LD script. Within this project I created 2 c functions - compressor and a function to initialize memory area (fill it with zeros). Also, I created a small ASM file with sections for jump instructions, some wrapper code (save/restore registers) and dummy sections for created functions. This asm was compiled and linked to correct address. Last step is just combine original file, compiled instructions and asm helper. To store compressor state - I move stack pointer at the start of the firmware.
I'll upload my code to the github.
Firstly, I tried to make the same using STM32 black pill board - created simple firmware, created a new logic and move it to compiled bin firmware. Much safer, than experimenting on the transceiver)
I'm not sure how to better share data from ghidra. for 1.1.8:
0x08024e62 - decimate tx audio (96 khz -> 12 khz)
008024e74, 0x08024e86 ?- apply bandpass filters
then - depending on modulation I and Q signals creates.?
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Georgy // R2RFE
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Re: No-code styles customization for R1CBU/R2RFE firmware
On Thu, Apr 10, 2025 at 02:47 PM, W8ISM wrote:
With all the tariff nonsense, I can't see upgrading to a new transceiver any time soon
You can try to build an improved "analogue of X6100" TRX "Brass" - this is a completely open project. All schemes and firmware are open.
You can stretch the assembly for some time, and it is not so painful financially (;
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73!
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Re: X6100 BASE firmware with compressor/noise gate
Georgy ¨C
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Many thanks for this implementation~!
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I¡¯m still running stock Xiegu firmware from a revision or two ago ¨C not the most recent version. What¡¯s the easiest way to upgrade this? I do not want to ¡°brick¡± the radio in the process
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Thanks & 73 ¨C
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Daniel
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From: [email protected] <[email protected]>
On Behalf Of Georgy Dyuldin via groups.io
Sent: Thursday, April 10, 2025 12:58 AM
To: [email protected]
Subject: [xiegu-x6100] X6100 BASE firmware with compressor/noise gate
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I added a compressor to the X6100 BASE firmware. This version also have extended to 160 Hz low bound of band pass filter and increased modulation level for FM.
As far as OEM GUI application doesn't have an option to control compressor - it's enabled by default for USB/LSB/AM/FM (and disabled for digital modes and CW). I need to check, but I guess alternative GUI (R1CBU) will be able to control
it with next version, at least on/off, but maybe also a compressor ratio.
In the signal processing chain it's after applying microphone gain and before band pass filters and modulation. As far as it's contain a gate - it's might be useful to adjust mic level to match gate threshold:
* Press PTT in a silent environment
* Check, that there is no or very low signal on the spectrum/waterfall
* Increase or decrease mic gain
I have OEM microphone with replaced capsule (it requires ~30 mic gain) and microphone from X6200 (it requires ~ 16 mic gain).
Compressor has 4:1 fixed compression ratio and 4:1 gate ratio. Attack time is 5ms, release - 300ms. Also, it contains a delay line for 5ms to prevent overloading on attack. Threshold level for gate and compressor configured to prevent increasing
internal radio noise on pauses.
Compressor code was written from scratch, I can share python/C sources, if it will be helpful for someone, let me know.
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Re: X6100 BASE firmware with compressor/noise gate
Georgy,
I am really amazed that you were able to change the base firmware of the X6100 to add a compressor!
I would really like to learn how you did it.
Did you compile your code for the STM32 separately as a new function, and then appended it at the end of Xiegu's firmware, and also modified some function pointers to call the new code?
If so, did you also figure out the function call sequence used to process the input from the microphone?
I am very interested in understanding the internals of the X6100 baseband firmware, and any information you would like to share would be very useful.
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Thanks again for all your work on this radio and on the new X6200!
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73,
Franco K4VZ
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Re: No-code styles customization for R1CBU/R2RFE firmware
This is great! Thanks to all of you. I figured the X6100 was at a dead end, but with all the gui changes it feels like a new device. With all the tariff nonsense, I can't see upgrading to a new transceiver any time soon, so thanks again.? ?
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Re: No-code styles customization for R1CBU/R2RFE firmware
On Thu, Apr 10, 2025 at 04:44 AM, Franco Venturi wrote:
I wrote this enhancement so people can share their ideas, what they tried, perhaps share their config files with others and just have fun doing it.
This does not contradict. Nothing prevents you from implementing "simple config files" through Python scripts. Like here, for example https://github.com/strijar/brass_gui/blob/main/rootfs/usr/share/brass/python/gui_const.py Scripts have many advantages - you can change not only the appearance, but also modify/expand the functionality (for example, automatically change the color scheme depending on the time of day). The sooner you think about it, the easier it will be later. Especially since you do not need to implement from scratch. You can easily use my developments.
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I am currently leading my project in the direction that it would be possible to create firmware for any Linux-based transceiver (working title OpenTRX). Separate the specifics of working with hardware and logic/GUI as much as possible. And Python scripts help a lot with this.
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Another point. Python is a very popular language now. Finding a Python developer is much easier than embedded. Even if he is not a radio amateur, he can be very helpful in developing such a project.
73!
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Re: X6100 BASE firmware with compressor/noise gate
Disclaimer: this firmare is provided "as-is". In theory, it might not works as expected.
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If something will be wrong:
On alternative GUI (R1CBU) - long press to lock button to reset BASE. Then you can reboot to OEM and flash another version.
On OEM GUI - fastest way is got to FW upgrade menu and do an upgrade (don't forget to plug external power). Resetting BASE is a first step of FW upgrade procedure.
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Georgy // R2RFE
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wicknix