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Test with GD32F405RTG6 and DFU mode #125

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repetto74 opened this issue Apr 30, 2022 · 28 comments
Closed

Test with GD32F405RTG6 and DFU mode #125

repetto74 opened this issue Apr 30, 2022 · 28 comments

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@repetto74
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repetto74 commented Apr 30, 2022 •
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I have mounted a GD32F405RTG6 on the Kung Fu Flash PCB.
I would like to program it via USB but despite having shorted J1 and B0 / +3.3v of J4 I cannot get in DFU mode with the Dfuse software.
Is there any way to force DFU mode or is GD32 clone not compatible with DFU mode?
I would like to explore all possibilities and trials before buying an ST link V2 programmer.
Thanks
Rick
@jgilcas
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jgilcas commented May 3, 2022

I have tried with two of them, they programmed well (I did it with the stlink v2) even the led blinked but in the C64 always black screen, I don't know if they are the two of mine that are false or that they are not totally compatible.

@jgilcas
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jgilcas commented May 3, 2022

I tried with DFU also but the drivers issue is different, you have to install the GD32 DFU drivers, the STM32 ones are not valid.

@repetto74
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repetto74 commented May 3, 2022 via email •
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@repetto74
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repetto74 commented May 3, 2022 via email •
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@repetto74
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Hi jgilcas,
Installed drivers for GD32 and successfully uploaded the firmware in DFU mode.
Unfortunately same results as you. Blinking led and black screen. I do not think those Ali chips are fake as the supplier looks reliable.
Most probably the GD32 cannot be a direct substitute on this KFF project.

@jgilcas
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jgilcas commented May 6, 2022

Using same board i replaced GD32 with a STM32, reprogramed with stlinkv2 and are working like a charm. Unfortunately i think is not a good replacement :(

@repetto74
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repetto74 commented May 6, 2022 via email •
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@chuckcaley
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I to have tried the GD32 and all i got also was a blank screen and a blinking led. Programmed ok on the STlink.

@repetto74
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repetto74 commented May 10, 2022 •
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Hi chuckcaley,
Conclusion is that GD32 is not a direct replacement for the STM32 at least not for the KFF project.
Grab an STM32 and it will work good ;-).

@KimJorgensen
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Thank you for testing this.
I have added a note to the release that the GD32F405 will not work as a replacement

@Sgw32
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Sgw32 commented Jun 4, 2022

Any chance GD32 version will exist?
I've ordered 10 pcs cartridges not so long ago and now I'm struggling with the same trouble 😄
I'll start debugging it this summer but I'm not sure I'll do it until the end. Here is an errata for GD32F405:

http://easyelectronics.ru/img/ARM_kurs/STvsGD/Migration/compatibility%20sumup%20between%20GD32%20and%20STM32_V2.0.pdf

@repetto74
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Just to confirm the incompatibility again. I have replaced the GD32 with the STM32 and now the KFF will just work flawlessly on first boot :-)

@Sgw32
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Sgw32 commented Jun 4, 2022

Yes, but STM32 chips are now expensive and hard to find.

@repetto74
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I sourced it from Aliexpress for 12 euro which is still acceptable if you are not producing large quantities.

@Sgw32
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Sgw32 commented Jun 4, 2022

It's good, but often they supply defective parts along with working - and that's what I really beware. Especially AVR series, but STM32 too. Anyway LCSC is still better but more expensive.
And it allows automated assembly.

@repetto74
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Here is the Aliexpress shop where I sourced the STM32.
https://www.aliexpress.com/item/1005003616330034.html?spm=a2g0o.order_list.0.0.7ad01802IGFixS
Comments are positive and it looks they deliver genuine STM components.

@Sgw32
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Sgw32 commented Jun 4, 2022

Thanks!
I have ~2-3 STM32s in my stock, however would be great to adopt GD32... I've started debugging and seems like it is stuck here:

if (!(TIM1->SR & TIM_SR_CC1IF) || TIM1->CCR1 < 160 || TIM1->CCR1 > 170)

CCR1 is 0 on GD32, TIM1 SR has bit CC1IF reset and that's why it does not work.

GD32 has TIM0 instead of TIM1, however real addresses in hardware are the same, same for registers.
For now I do not know why it does not work. If someone can adopt GD32 to this project, I can pay for this work
@KimJorgensen do you have any ideas, maybe you can fix firmware for GD32 for some price?

@KimJorgensen
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@Sgw32 No, I have never tried to use a GD32 and it is not really something that has my interest. However, if somebody manages to get it working I'll be happy to add a link to their port.

@Sgw32
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Sgw32 commented Jun 28, 2022

After some work my colleague has found that ARR register is not set for GD32 and that's why it does not count 1 MHz clock. That was the first issue it just blinks. Now it looks like it boots and even reset is not zero, but there is still a black screen and GAME=0, EXROM=1. I hope we'll make a fix for GD32 soon, after that I'll publish PR.

@Sgw32
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Sgw32 commented Jul 7, 2022

GD32 version is almost ready. Working +- correctly on C64(not C64C, there are some troubles on its motherboard). I'll make pull request within a week.
For now I've seen that at least EasyFlash cartridge is not functioning on it.

@repetto74
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That’s a wonderfull news!! 😜. Il have a GD32 sitting there and ready to be mounted on another KFF.

@KimJorgensen
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@Sgw32 Just to avoid misunderstandings; I'm not interested in maintaining new variants of the Kung Fu Flash hardware and therefore will not accept such a pull request.
However, you are of course free to do your own fork, and as said, I'll be happy to link to that once you get it working

@Sgw32
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Sgw32 commented Jul 10, 2022

@KimJorgensen @repetto74 here is GD32 version with a release file:
https://github.com/Sgw32/KungFuFlashGD32

You can mention it on a page if needed. Hardware is the same.

@repetto74
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Hi Sgw32 :-)

That awesome!! :-D. I will mount another KFF with the GD32 I have in stock and give it a try. I can be the Beta tester and report how it works.

@repetto74
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Is there already a patched firmware available or do we need to compile it?

@Sgw32
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Sgw32 commented Jul 10, 2022

Check releases

@KimJorgensen
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@Sgw32 Great. I have added a link to your fork here https://github.com/KimJorgensen/KungFuFlash/releases/tag/rev.2

@repetto74
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Got it! Thanks Sgw32 :-D!

@KimJorgensen KimJorgensen mentioned this issue Sep 4, 2022
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@KimJorgensen KimJorgensen mentioned this issue Sep 8, 2023
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5 participants
@KimJorgensen @Sgw32 @chuckcaley @jgilcas @repetto74