Default HSI Calibration Value wrong in STM32CubeIde

[iduque]

Hello,

I am using the STM32L412, when I activate the HSI clock in the .ioc, HSI Calibration Value is set to 16 (0x10).

Looking at stm32l4xx_hal_rcc.h:

#if defined(RCC_ICSCR_HSITRIM_6)
 
#define RCC_HSICALIBRATION_DEFAULT   0x40U     /*!< Default HSI calibration trimming value 64 on devices other than STM32L43x/STM32L44x/STM32L47x/STM32L48x */
 
#else
 
#define RCC_HSICALIBRATION_DEFAULT   0x10U     /*!< Default HSI calibration trimming value 16 on STM32L43x/STM32L44x/STM32L47x/STM32L48x devices */
 
#endif /* RCC_ICSCR_HSITRIM_6 */

So, with STM32L412, the default value set by the device configuration tool should be 60 (0x40).

With default value USART was failing, once changed everything was working good for me.

[TDK · Accepted solution]

It should be set to 0x40 based on what's in the repo right now:

https://github.com/STMicroelectronics/STM32CubeL4/blob/5e1553e07706491bd11f4edd304e093b6e4b83a4/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l412xx.h#L5498

[iduque]

Ups you are right, I've created a new test project with the same target and it is set to 0x40 by default. I don't know what could had happen with the other project.

Thanks for the response 🙂

[TDK]

It has been a bug in the past for other families and possibly this family. Perhaps you were using an older version.