stm32f4 HSE use bypass clock source bug

[liu yong]

Posted on October 27, 2017 at 04:26

Cube Version: STM32Cube_FW_F4_V1.17.0

When I use bypass clock source for HSE,cube(4.23.0) generate init code:

RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI |RCC_OSCILLATORTYPE_HSE;

RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;

I find two solutions for this bug:

1. RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI

   |RCC_OSCILLATORTYPE_HSE;

   RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;

   RCC_OscInitStruct.HSIState = RCC_HSI_ON;

2. RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI

   |RCC_OSCILLATORTYPE_HSE;

   RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;

which one is right?

Thank you!

[Amel NASRI]

Posted on October 27, 2017 at 12:43

Hi

yong.Liu.003

‌,

Please share your .ioc file. I don't reproduce such issue.

-Amel

[liu yong]

Posted on October 30, 2017 at 10:25

st.mcu

‌

When I new a cube project in version

4.0, there is no problem. The attached ico project is created in cube version 4.0, and I migrate it to 4.0, than the bugoccurs.