About TBran.3

TBran.3 · 2023-10-24

Has anyone out there done OTA with the WB1M? Did you write your own OTA bootloader from scratch, modify the WB55 Nucleo example from CubeWB, or some combination of the two? Any tips?I started trying to modify the example but I think the low level stu...

TBran.3 · 2023-10-21

Flash on the STM32WB1M is supposed to be 320K long, as advertised as well as in the ref manual RM0473 and in the Memory Manager in CubeMx. But the default linker script out of CubeMx only gives 110K flash section length. If I try to put an emulated E...

TBran.3 · 2023-07-06

Hi all,Looking to implement FOTA on a custom board which uses the STM32WB55M module. I understand the principles of the FOTA solution and the services/characteristics and have looked over the relevant app note, but I have a couple of questions about ...

TBran.3 · 2023-10-24

Holy smokes dude, that was it! Thank you so much! I've been banging my head against the wall for so long.For everyone else, just to be clear, here is the setting in CubeMX that needs to be modified (must be LSE, not HSE):

TBran.3 · 2023-10-23

D'oh. Should have realized that when I was programming the BLE stack at 0x08021000...Thanks.

TBran.3 · 2023-10-18

Yeah I mean in my case (which IIRC is same as yours), the user app is never deleted because the OTA bootloader never makes it to the point of "erase and write". So on power cycle, the previous user FW indeed loads. It never makes it deep enough into ...

TBran.3 · 2023-10-04

Nope, the OTA loader application should erase the user application flash before writing the new program. If you think about it, you can't really erase the user application while you're still *in* it.

TBran.3 · 2023-09-28

Yep, you have to handle that write in custom_stm.c and custom_app.c, just like any other BLE data transaction. In custom_app.c, you should have a block that looks like this:(The while(1) isn't necessary)

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