GBA Multiboot from Flipper | Flipper Devices | Page 1

humble aspen Nov 24, 2022, 5:25 AM

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Starting the thread I think

jagged orchid Nov 24, 2022, 5:25 AM

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Howdy!

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You did it right, so dw

spring mesa Nov 24, 2022, 5:25 AM

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Hey guys I'm here too

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https://github.com/rodri042/gba-remote-play

Found this for reference

GitHub

GitHub - rodri042/gba-remote-play: Stream Raspberry Pi games to a G...

Stream Raspberry Pi games to a GBA via Link Cable. Contribute to rodri042/gba-remote-play development by creating an account on GitHub.

humble aspen Nov 24, 2022, 5:26 AM

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Lmao same reference

jagged orchid Nov 24, 2022, 5:26 AM

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humble aspen

Perfect!

spring mesa Nov 24, 2022, 5:26 AM

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Ye that image was in the GitHub link

jagged orchid Nov 24, 2022, 5:26 AM

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It's UART, which makes this a LOT easier since furi_hal supports UART IIRC

humble aspen Nov 24, 2022, 5:26 AM

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I've looked into that project a lot, high respect for him and tested it out before

jagged orchid Nov 24, 2022, 5:28 AM

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https://github.com/flipperdevices/flipperzero-firmware/blob/dev/firmware/targets/f7/furi_hal/furi_hal_uart.c#L0-L1

GitHub

flipperzero-firmware/furi_hal_uart.c at dev · flipperdevices/flippe...

Flipper Zero firmware source code. Contribute to flipperdevices/flipperzero-firmware development by creating an account on GitHub.

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^ UART stuff with furi_hal

humble aspen Nov 24, 2022, 5:31 AM

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I'm assuming using furi_hal I'd write something very similar to what is done in https://github.com/akkera102/gba_03_multiboot yes?

GitHub

GitHub - akkera102/gba_03_multiboot: Raspberry Pi GBA Loader

Raspberry Pi GBA Loader. Contribute to akkera102/gba_03_multiboot development by creating an account on GitHub.

jagged orchid Nov 24, 2022, 5:33 AM

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humble aspen I'm assuming using furi_hal I'd write something very similar to what is done in ...

Is this your code?

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or someone elses 🙃

humble aspen Nov 24, 2022, 5:33 AM

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Someone else's 100%

jagged orchid Nov 24, 2022, 5:34 AM

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So I'm looking at the pinout of the flipper

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and for sure, there are some GPIO pins dedicated to SPI https://github.com/flipperdevices/flipperzero-firmware/blob/90cefe7c7198d09c2bcaf43eff0e8ded54c761c3/firmware/targets/f7/furi_hal/furi_hal_resources.h

GitHub

flipperzero-firmware/furi_hal_resources.h at 90cefe7c7198d09c2bcaf4...

Flipper Zero firmware source code. Contribute to flipperdevices/flipperzero-firmware development by creating an account on GitHub.

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Pins 2 thru 6 have some SPI stuff on it

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so I think it would be possible AFAIK

humble aspen Nov 24, 2022, 5:38 AM

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Yep yep, looks like it

I'm kinda diving into this flipper stuff blind so it might take a bit for me to understand how to actually go about doing this. But hey, fun challenge?

jagged orchid Nov 24, 2022, 5:39 AM

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Yeeep

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Might write this out as a FAP (Flipper Application Package)

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and if we are really crazy

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You might be able to draw the Flipper onto the GBA

humble aspen Nov 24, 2022, 5:44 AM

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Terrifying idea but I hope that level of crazy is attainable

I mean. Actually. I guess the hard of that would just be writing the multiboot program right? Cause assuming we would have the Multiboot forwarder already built, we could make a rom that would interpret whatever the flipper is sending and display it

Maybe and added level to this craziness. It's got a dpad and buttons. Why not control the whole flipper from it?

jagged orchid Nov 24, 2022, 5:45 AM

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The hardest part is getting it to talk to the Flipper

humble aspen Nov 24, 2022, 5:48 AM

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I've got a lot of documentation reading to do 😅

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I hate to admit I think I'm way over my head.

Definitely not giving up, but. Wow. I've got a ways to go before I can realistically make this myself

peak bronze Nov 26, 2022, 4:51 PM

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what about trading for pokemon on gba? like connecting a link cable and send pokemons to the gba?

#GBA Multiboot from Flipper