STM32WBA23KE SPI Bootloader

[Oren ERM]

Hello,

 

We’re trying to program a STM32WBA23KE controller using SPI. We use the same function for STM32WB10 over SPI and it works.

We’ve connected the SPI bootloader pins PA0/PA5/PB8/PB9 according to AN2606, where it mentions these are the pins used for QFN32 packages.

We’ve also replaced an older part with an old date code to date code 620 because of the bootloader issue mentioned in the errata (should have been fixed since date code 614).

We also have the PH3-BOOT0 pin connected and the NRESET.

 

Still, we can’t get the bootloader to respond to the SPI sync command. What are we missing?

[Issamos]

Hello ​@Oren ERM 

Are you using the pattern 6 to activate the Bootloader (used for STM32WB10)?

If so, try to follow the pattern 12 (the one that you should follow for your STM32WBA2 as mentioned on the AN2606.

Best Regards.

II