Enable the UART2 Peripheral Clock

[JLIND.1]

Hello, I am doing a UART example and I need to find the command to Enable the UART2 Peripheral Clock. I have enabled the GPIO clock:

__HAL_RCC_GPIOA_CLK_ENABLE(); // stm32f4xx_hal_rcc.h

and now I need to enable the UART2 Clock Peripheral.

Can anyone please help me.

Thank you,

Joe

[JLIND.1]

I see a command: __HAL_RCC_USART2_CLK_ENABLE

but that is for the USART2, not UART2.

[Tesla DeLorean]

Correct it is USART2, but you're using the simpler async only library​, which supports a subset of functionality common between UART and USART peripheral IP.

[JLIND.1]

Hello, thank you very much for responding to my message. What async library should I be using or is this okay for now?

I am going though a Udemy class on the FreeRTOS: "Mastering RTOS: Hands on FreeRTOS and STM32Fx with Debugging" which is very good course. The course instructor uses the System Workbench IDE and he uses the Standard Peripheral Library but I was not able to download or add in that library so I must do what he is doing but use the HAL libraries. I have attached my first project using Tasks.

Thank you,

Joe

[JLIND.1]

Could you help me one more time. What is the equivalent HAL command for :

GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF7_USART2)

GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF7_USART3)

I'm trying to set up the Alternate Function for pins 2 and 3.

Can you please help me.

Thank you

[JLIND.1]

I forgot to add that I am using the Nucleo-F446RE Board.

[Piranha]

HAL doesn't have direct equivalent, but the functionality is provided by HAL_GPIO_Init().

https://github.com/STMicroelectronics/STM32CubeF4/blob/master/Projects/STM32446E-Nucleo/Examples/UART/UART_Printf/Src/stm32f4xx_hal_msp.c

A closer equivalents are LL_GPIO_SetAFPin_0_7() and LL_GPIO_SetAFPin_8_15() from LL driver.

[JLIND.1]

Thank you very much. I finally got things working.

[Tesla DeLorean]

https://community.st.com/s/question/0D53W000004HOa7SAG/what-function-in-hal-is-similar-to-the-standard-peripheral-library-gpiopinafconfig