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STM32F446VET7, SystemClock_Config(); FAULT

testbenchmark
Associate III

I used STM32F446VET7 on the board I PCB printed. When I use HSI, I can debug without any problem, but when I want to use HSE, SystemClock_Config(); function enters ErrorHandler().

Can you help me?

1 ACCEPTED SOLUTION

Accepted Solutions
TDK
Guru

Can you show the HSE portion of your schematic?

In particular, the load caps on the crystal oscillator must be chosen correctly.

cd00221665-oscillator-design-guide-for-stm8af-al-s-stm32-mcus-and-mpus-stmicroelectronics.pdf

 

Roughly speaking, load caps should be around

CL1 = CL2 = 2 * (CL - 5 pF)

where CL is the load capacitance of the crystal.

If you feel a post has answered your question, please click "Accept as Solution".

View solution in original post

5 REPLIES 5

So step through the code in SystemClock_Config(), and see where the error happens.

Did you set up your clocks using CubeMX (standalone or within CubeIDE)? If not, try that ...

 

EDIT:

Have you tried your code on a known-good board; eg,

https://www.st.com/en/evaluation-tools/nucleo-f446re.html

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.
TDK
Guru

Can you show the HSE portion of your schematic?

In particular, the load caps on the crystal oscillator must be chosen correctly.

cd00221665-oscillator-design-guide-for-stm8af-al-s-stm32-mcus-and-mpus-stmicroelectronics.pdf

 

Roughly speaking, load caps should be around

CL1 = CL2 = 2 * (CL - 5 pF)

where CL is the load capacitance of the crystal.

If you feel a post has answered your question, please click "Accept as Solution".

I use 16 MHz ECS-160-12-33-AGN-TR with 2x12pF cap.

 

testbenchmark_0-1722026716115.png

 

Debug the code, see where and why it's entering ErrorHandler.

HSE design seems fine.

If you feel a post has answered your question, please click "Accept as Solution".

The error was in hardware. I resolder components and its work just fine.

 

Thank you guys!