ReMPU A1200

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arkadiusz.makarenko
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Re: ReMPU A1200

Post by arkadiusz.makarenko »

Basic stuff implemented.

Time to hook it up to logic analyser and check clock timings, signal, and check keyboard reset.
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arkadiusz.makarenko
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Re: ReMPU A1200

Post 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
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arkadiusz.makarenko
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Re: ReMPU A1200

Post 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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neilo40
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Re: ReMPU A1200

Post by neilo40 »

Nice work!
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PhilC
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Re: ReMPU A1200

Post by PhilC »

Nicely done
If it ain't broke, test it to Destruction.
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arkadiusz.makarenko
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Re: ReMPU A1200

Post 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).
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arkadiusz.makarenko
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Re: ReMPU A1200

Post by arkadiusz.makarenko »

I have ordered black pill which should give me USB HID option.
I need to learn Eagle...
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arkadiusz.makarenko
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Re: ReMPU A1200

Post 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.
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morten.dynamite
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Re: ReMPU A1200

Post 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.
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arkadiusz.makarenko
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Re: ReMPU A1200

Post 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.
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