Bootup Delay on STM32F446

Nibesh · ‎2024-05-23

Hello,

I am running simple LED Blinking on STM32F446RE.
I want to measure the Bootup Delay once it is Hard Reset.
I have conducted the following test through Oscilloscope and Logic Analyzer.
I want to know and prove this through calculation.
Is there any supporting documents for it.
i. What will be the Time Periods, once it is Reset

ii. How much time it will take to Jump to Application Code, when it is Powered and HardReset.

I hope to hear from you soon.
BR

Nibesh

waclawek.jan · ‎2024-05-23

This is the time until the first instruction pointed to by the Reset vector gets fetched and executed.

Add to this the time spent in your startup code (i.e. initializing/clearing global/static variables, maybe other functionalities if you've set it so), until it gets to executing first instruction corresponding to beggining of your main().

JW

View solution in original post

waclawek.jan · ‎2024-05-23

This is the time until the first instruction pointed to by the Reset vector gets fetched and executed.

Add to this the time spent in your startup code (i.e. initializing/clearing global/static variables, maybe other functionalities if you've set it so), until it gets to executing first instruction corresponding to beggining of your main().

JW