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Re: ReMPU A1200

Posted: Fri Jun 19, 2020 8:13 pm
by arkadiusz.makarenko
Basic stuff implemented.

Time to hook it up to logic analyser and check clock timings, signal, and check keyboard reset.

Re: ReMPU A1200

Posted: Sat Jun 20, 2020 7:22 pm
by arkadiusz.makarenko
What I see on logic analyser looks promising. Reset, capslock led and other bits and bobs doesn't work yet as they should, but is time to set up Amiga 1200 for tests :)

Arek

Re: ReMPU A1200

Posted: Sun Jun 21, 2020 5:40 pm
by arkadiusz.makarenko
Yup, it works ok.
Notes: 10 key buffor is not enough, as phantom keypresses appear when it overflows. I will change it to 32.
Debouncing works great, depressed buttons works great. No delays or issues on only internal clock.
Some keys are not mapped correctly.

Better than expected on first run.

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Re: ReMPU A1200

Posted: Sun Jun 21, 2020 5:42 pm
by neilo40
Nice work!

Re: ReMPU A1200

Posted: Sun Jun 21, 2020 7:18 pm
by PhilC
Nicely done

Re: ReMPU A1200

Posted: Mon Jun 22, 2020 6:28 pm
by arkadiusz.makarenko
Firmware is more or less done.
All keys maped correctly now.
Debouncing routine working as expected, with posibility of changing amount of 1ms compare passes.
Handling ignore entries (in case button bounces)...
32 Keypresses... keyboard starts to get crazy after more or less 20 button presses anyway (could be due to too strict debouncing).

Re: ReMPU A1200

Posted: Thu Jun 25, 2020 5:34 pm
by arkadiusz.makarenko
I have ordered black pill which should give me USB HID option.
I need to learn Eagle...

Re: ReMPU A1200

Posted: Wed Jul 15, 2020 8:39 am
by arkadiusz.makarenko
Black pill is wired differently than blue pill.
This means that I am short of 2 GPIO pins.
Need to look at different dev board.

Re: ReMPU A1200

Posted: Thu Jul 30, 2020 8:42 pm
by morten.dynamite
Wow very nice.

There are some nice STM32F407 dev boards like https://github.com/mcauser/MCUDEV_DEVEBOX_F407VGT6 or https://stm32-base.org/boards/STM32F407 ... -V2.0.html

The MPU in my 1200 is acting up so this is really interesting.

Re: ReMPU A1200

Posted: Thu Jul 30, 2020 9:05 pm
by arkadiusz.makarenko
morten.dynamite wrote:
Thu Jul 30, 2020 8:42 pm
Wow very nice.

There are some nice STM32F407 dev boards like https://github.com/mcauser/MCUDEV_DEVEBOX_F407VGT6 or https://stm32-base.org/boards/STM32F407 ... -V2.0.html

The MPU in my 1200 is acting up so this is really interesting.
Yes, this project need proprietary pcb really with either f103 for basic or f7x0 series for dual keyboard+usb hid.
Firmware is ready and very easily ported to any stm32 f series.