What should be RCC configuration as it is failing in initialisation?

I am using custom designed board having STM32H745BIT6 and 25MHz external crystal with LDO and SMPS pins connected as seen in attached snippet.

I have created, compiled new STM32 project using CubeIDE and CubeMX software for LED blinking.

Attached .IOC file for same as well.

Mainly I don't know about which supply source to select in POWER parameters under RCC section as per my custom board pin connection.

This topic has been closed for replies.

Best answer by Foued_KH

Hello @NDham.1 ,

Below is diagram from reference manual showing different hardware configurations for power supply:

So, you can choose the "PWR_LDO_SUPPLY" as Supply source:

Foued.

Foued_KHBest answer

ST Employee

Hello @NDham.1 ,

Below is diagram from reference manual showing different hardware configurations for power supply:

So, you can choose the "PWR_LDO_SUPPLY" as Supply source:

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.

Sign up