STM32WL5MOC bootloader mode

[User2501]

Hello, 

I'm looking for advices to place the module STM32WL5MOC in bootloader mode from different methods :

• Through BOOT0 and NRST but I can not find the communication interface that I can communicate with (for example UART) this specific mcu in the application note AN2606.
• Also, I'm interested to know how can I access to the new firmware stored in the External memory flash for firmware update as the flash that is in the dev board B-WL5M-SUBG1 using as an example.
• Is it possible to place this module in bootloader mode in the software if I can not have access to the BOOT0 and NRST from an external device that can control it?
• Any example to do FUOTA point to point if I want to use the SubGHz modulation and not LoRaWAN server?

[STTwo-32 · Accepted solution]

Hello @User2501 

• The STM32WL5MOC is a module based on the STM32WL55JC. So, you can find all details on boot operation for this module on the chapter 84 of the AN2606. 
• Unfortunately, there is not such an example on a board that include the STM32WL.
• Follow the Pattern 13 of the table 2 of the AN2606 to know how to that.
• There is not a P2P FUOTA application, you can use the LoRaWAN implementation and try to build your own in a P2P context. 

Best Regards.

STTwo-32