New MD-UV380 or RT3S

[VK3KYY]

If the CPU chip has no markings, the firmware will not work, because the chip is not a real STM32F405

[VE2NCK]

one thing that bug me about all this is that i can load openrtx on it , and it will run it.. what is the missing part of code to have it supported by opengd77?
thx to everyone who is contributing to this endeavor

[VK3KYY]

one thing that bug me about all this is that i can load openrtx on it , and it will run it.. what is the missing part of code to have it supported by opengd77?
thx to everyone who is contributing to this endeavor

OpenRTX do not use the official STM hardware code libraries (HAL) or FreeRTOS etc

The code appears to be crashing somewhere inside either a HAL library or FreeRTOS

[VK3KYY]

I checked and STM32F405VTG CPUs are still available in China e.g.

https://www.aliexpress.com/item/1005004137675365.html

So this is just a cost saving exercise by TYT.

Perhaps someone needs to tell them, that the reason they are selling a lot of UV380 / RT3S is that people want to run OpenGD77 on these radios, and they should return to using the official STM32 CPU and not try to make more money by using an unmarked clone

FYI.

Retevis just rebrand the MD-UV380 and load their own, slighly modified firmware. But the hardware is made by TYT

[VE2NCK]

one thing that bug me about all this is that i can load openrtx on it , and it will run it.. what is the missing part of code to have it supported by opengd77?
thx to everyone who is contributing to this endeavor

OpenRTX do not use the official STM hardware code libraries (HAL) or FreeRTOS etc

The code appears to be crashing somewhere inside either a HAL library or FreeRTOS

i see thx for the information

[SA0BUX]

I have a non GPS rt3s arriving shortly, dunno the serial yet but I will notify here.

Will be interesting to see what MCU this one has, just arrived from Amazon in Germany.
It's a non GPS unit.
But I have some German beer first (Weiherer Landbier)

This serial number 2208R03S1100979 worked fine with OpenGD77 so I guess I was lucky, I had that feeling as it was s/n 2208R03 with a 2022 8 seal.

I wonder if the ones with a serial which seems earlier than the month on the seal was reworked or not completed at factory until later ? , maybe they had problems getting some components like the MCU.

[SA0BUX]

I checked and STM32F405VTG CPUs are still available in China e.g.

https://www.aliexpress.com/item/1005004137675365.html

So this is just a cost saving exercise by TYT.

Perhaps someone needs to tell them, that the reason they are selling a lot of UV380 / RT3S is that people want to run OpenGD77 on these radios, and they should return to using the official STM32 CPU and not try to make more money by using an unmarked clone

FYI.

Retevis just rebrand the MD-UV380 and load their own, slighly modified firmware. But the hardware is made by TYT

Or maybe they try to stop us using a non official firmware by installing a MCU that isn't standard ?

[VE2NCK]

I checked and STM32F405VTG CPUs are still available in China e.g.

https://www.aliexpress.com/item/1005004137675365.html

So this is just a cost saving exercise by TYT.

Perhaps someone needs to tell them, that the reason they are selling a lot of UV380 / RT3S is that people want to run OpenGD77 on these radios, and they should return to using the official STM32 CPU and not try to make more money by using an unmarked clone

FYI.

Retevis just rebrand the MD-UV380 and load their own, slighly modified firmware. But the hardware is made by TYT

Or maybe they try to stop us using a non official firmware by installing a MCU that isn't standard ?

tyt and boafeng got warn of heavy fines for selling unregulated radios, boafeng started implementing locks in there radio last fall
i.e.: amateur radio are restricted for tx only in the allowed freq. on 2m and 70cm, you can program "out-of-band" freq. but the radio won't transmit elsewhere same for the gmrs. i suppose tyt are doing something in that direction too, but this seem to be another issue as the radio still can be prog. and transmit out of the amateur bands. cost reduction seem to be the more realistic choice

[VK3KYY]

I don't think this has anything to do with prevening people using the radio on unregulated frequencies

You can still install OpenRTX and transmit wherever you like.

[VK3KYY]

I checked the availablilty of the CPU, and it looks like there is a global shortage of the genuine CPU

e.g. see

https://au.mouser.com/c/?q=stm32f405VGT

Which don't seem to be forecast to be resolved until the end of the year

So I think this will be the end of the firmware being compatible with any radios which are currently in production