STM32F103C8T6 Clock Configuration - STM32CubeIDE

Forum|Forum|3 years ago
November 4, 2022
3 replies
7147 views

I'm wondering why I can't configure 72MHz clock in the Clock configuration panel in CubeIDE

for the STM32F103C8T6 (blue pill) board.

From my understanding it has an 8 MHz quartz connected to pins 5,6 and choosing these pins as RCC OSC_IN/OUT doesn't seem to allow me to choose the external HSE clock and switch to PLL internally.

This topic has been closed for replies.

Best answer by chriskuku

I solved it. Had to enable external HSE crystal osc. in the RCC setting first. Then the HSE option got avaiable in the clock configuration panel.

chriskukuAuthorAnswer

Senior II

I solved it. Had to enable external HSE crystal osc. in the RCC setting first. Then the HSE option got avaiable in the clock configuration panel.

Foued_KH

ST Employee

Hello @chriskuku,

If u want to choose the external HSE clock, I recommend you try to:

Enable the HSE as: Crystal/Ceramic Resonator.

Now you can manage your clock tree: choose the external HSE clock and switch to PLL internally.

Hope my answer helped you!

When your question is answered, please close this topic by choosing Select as Best.

This will help other users find that answer faster.

Foued

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

chriskukuAuthor

Senior II

Thank you, Foued, for giving more details. But I posted the solution already a few minutes before your post. Thanks anyway.

Foued_KH

ST Employee

@chriskuku You are welcome :beaming_face_with_smiling_eyes:

Foued

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

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