2024-09-06 11:37 AM
This is mostly a post to help people who try to google this later since I couldn't find anything. If you look at AN2606 table 197, it lists the minimum startup time for the bootloader on a bunch of different STM32 microcontrollers. For some reason, just two MCUs have "NA" listed including the chip I'm currently working with - the STM32L4R. So if anyone is wondering, my testing has shown that it takes ~90ms from reset/powerup to when the chip will ACK the 0x7F message on USART.
I am curious though, does anyone know why no time is listed for these chips?
Solved! Go to Solution.
2024-09-11 02:01 AM
Hi @Ben Freudberg ,
After an internal cross-check with the Bootloader team, we confirm this is a missing.
An internal ticket number 190555 is submitted in order to fix this.
(PS: This internal ticket number 190555 is only for reference, not available outside of ST)
Thank you again for having reported the point.
2024-09-09 03:08 AM
Hello @Ben Freudberg ,
Thank you for bringing this to our attention.
I will check that and comeback to you soon with update.
2024-09-11 02:01 AM
Hi @Ben Freudberg ,
After an internal cross-check with the Bootloader team, we confirm this is a missing.
An internal ticket number 190555 is submitted in order to fix this.
(PS: This internal ticket number 190555 is only for reference, not available outside of ST)
Thank you again for having reported the point.