Firmware for the new STM32L412KB based RS41

[videobuff]

The latest recoverd sonde (from the german Bundeswehr) contains the STM32L412KB chip and is a device with Ultra-low-power with FPU Arm Cortex-M4 MCU 80 MHz with 128 Kbytes of Flash memory. Looks the same (bottom one on the picture)
The current firmware RS41ng is written for the STM32F100. And that is an M3 MCU.
Hence you cannot flash it with the current firmware.

Is there already a process to port the current firmware for the new sondes ?

My knowledge is not enough to port the current firmware so I am keen to find out if someone is already on to it.
If needed i could donate one of the new sondes.

Erik

[kd2eat]

Erik, if you happen to get a few spares of the new model and felt like mailing one to the States, let me know. I was involved in the hardware side of the DFM-17 port, and could take a swipe at this too. I just don't have access to one.

[videobuff]

Michael I will do. Please tell me your address where to ship it to. I’ll use DHL or FEDEX. Erik. PA0ESH Verzonden via Gmail Mobile Op vr 17 mei 2024 om 14:23 schreef Mike Hojnowski ***@***.***>

…

Erik, if you happen to get a few spares of the new model and felt like mailing one to the States, let me know. I was involved in the hardware side of the DFM-17 port, and could take a swipe at this too. I just don't have access to one. — Reply to this email directly, view it on GitHub <#92 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAX44GJFDUJV5SRLRHODRWDZCXZEVAVCNFSM6AAAAABH3CEUROVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDCMJXGQ4DENJXGM> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[kd2eat]

Erik, Thanks so much. I emailed my address to your email account listed in QRZ. Let me know, here, if you don't get it. Thanks! Mike / KD2EAT.

[kd2eat]

I've received the sonde from Erik (thanks!). I've done some preliminary research on the processor. This could be in the "Big Deal" category. The processor is an STM32L41R8T6, A few differences from the existing RS41:

CPU speed: 24 mhz vs 80 mhz
SRAM: 8k vs 40k

The processors for both the classic RS41 and the DFM17 were in the "Medium Value Line" according to the HAL defines in the source code. It's not clear that this processor would be. I also haven't researched whether this processor is even supported by the existing HAL code. That will be the next step. It's likely that we'll either (at best) have a different CMAKEFILE for the new RS41, or at worst, deal with a different HAL library that supports it. We may be forced into the STM32CubeMX libraries if there isn't support in the current library.