Connect Dual HAT MMDVM to Raspberry Pi 4 via USB

MMDVM_HS Hat hardware
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wb0ktq
Posts: 4
Joined: Tue Aug 17, 2021 7:05 pm

Connect Dual HAT MMDVM to Raspberry Pi 4 via USB

Post by wb0ktq »

I have a generic Dual hat MMDVM with usb similar to https://www.amazon.com/AURSINC-Hotspot- ... ics&sr=1-6.
It is working fine by using GPIO connection.

I am wondering if somebody has successfully connect this hat to Raspberry Pi using USB (instead of GPIO), please share information on how to do that.
Read most of available documentation on web, but cannot make it to work. It is said to flash "specific" firmware using STLink.

Thank you!
WB0KTQ
wb0ktq
Posts: 4
Joined: Tue Aug 17, 2021 7:05 pm

Re: Connect Dual HAT MMDVM to Raspberry Pi 4 via USB

Post by wb0ktq »

KE7FNS wrote: Fri Sep 17, 2021 7:07 pm Theres also the issue that Pi-Star swaps the two USB uarts to make the GPIO serial port perform better, and doing so it might effect the USB, so you might have to reverse that modification.
Wow, seems lots of work to do. Will give it a shot when time permits...

Thanks!
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