MT32Pi not detected

chriz
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MT32Pi not detected

Unread post by chriz »

Hi Guys,

i am using a RPI4 with the MiSTer MT32-Pi Hat v2.1

Everything is booting up and working in the Display

When I am starting the AO486 Core the Mister Logo does not come up and the Menu is missing.

Any Idea how to debug this?

Chriz
Xbytez
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Re: MT32Pi not detected

Unread post by Xbytez »

The github page for setting up the mt32-pi with MiSTer is an excellent place to start, make sure you have setup the .ini files correctly on the RPi micro SD card. The length of the USB3 cable you use is also important, less than 30cms is recommended. Also check which IO board version you have as early IO boards require modification to work correctly, this is also mentioned in the setup guide linked below.

MiSTer FPGA User Port Connection Setup

https://github.com/dwhinham/mt32-pi/wik ... connection

RPi for MiSTer Setup

https://github.com/dwhinham/mt32-pi/wik ... tion#setup

MT32Pi FAQ

https://github.com/dwhinham/mt32-pi/wiki/FAQ

Flynnsbit MiSTer AO486 MT32Pi Setup Integration with MiSTer

https://www.youtube.com/watch?v=GEyNDPc2Bug

Hope these help you get setup.
chriz
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Re: MT32Pi not detected

Unread post by chriz »

Thanks for your support

I just found the Board Version, is a V6, the Cable came with the hat
In my opinon I did all the things you mentioned
so shell i buy a new io board then?
Stupid Dufus
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Re: MT32Pi not detected

Unread post by Stupid Dufus »

I had a similar issue with my mt32pi. OLED would display, but MiSTer wouldn't recognize it the device.

Silly as it is, turned out to I wasn't plugging the USB cable fully in to the mt32pi itself. Ugh. After I pushed it in just a bit further everything worked.

Try that I guess. Ensure you have a good cable.
H6rdc0re
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Re: MT32Pi not detected

Unread post by H6rdc0re »

Insufficient power from the USB perhaps due to a wrong setting in INI? I had that problem myself.
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Re: MT32Pi not detected

Unread post by legacypixels »

Do you have an eBay/AliExpress IO board? If so, you may have pins missing on the IO board, see blog post below (not my site)
https://ozmistermods.com/blogs/news/psa ... n-the-wild
US based seller of MiSTer addon boards. Visit https://www.legacypixels.com/mister
chriz
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Re: MT32Pi not detected

Unread post by chriz »

It seems the V6 Board from Ali is not suitable. Just ordered another from UK
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Re: MT32Pi not detected

Unread post by venice »

chriz wrote: Fri Jul 09, 2021 1:49 pm Any Idea how to debug this?
...had the same issue.
It was the cable. One line was broken.
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Re: MT32Pi not detected

Unread post by SpotAnime »

I had a similar issue with mine, I could not get to work, tried multiple cables and everything. No display on the OLED at all. My MicroSD card came formatted FAT32, and when it didn't work I reformatted it to see if that was the issue. Sadly, it did not fix the issue. I even tried multiple SD cards. I was starting to think my hat got damaged in transit from the UK. Then when searching troubleshooting I decided to triage my PI 3A+, and I went to the Raspberry Pi page and downloaded the OS installer from there. That program formatted the SD card and installed the OS on the card, including creating the necessary partitions.

Knowing I was in over my head, I stopped there, deleted the partitions and reformatted the card. On a whim, I copied the MT32pi files back on the SD card and inserted it back on my Pi 3A+, booted up MiSTer, turned on the hat and voila! Magically the OLED screen on the hat came to life! It's been working like a charm since.

My take on it is that when the RPi install program formatted the card and created the partitions, that ended up cleaning any leftover data that was causing some issue. Even though I had used guiformat, for some reason that alone didn't do the trick.

Long story short - cables are frequently a problem, but also make sure to check your MicroSD card.
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