Communication between Nucleo-F411RE and Raspberry Pi using ST-Link VCP

Forum|Forum|1 year ago
September 18, 2024
4 replies
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Hello, i am using STM32F411RE with raspberry pi 4. i want to communicate rasp with stm32 through usb cable from pi to CN1 of stm32. i want the communication both ways. could you please tell me how to do it?
Thank you in advance.

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Best answer by Andrew Neil

@suhfi wrote:
okay, we enable the usart connectivity, how do we connect them

The UART connection is carried over the USB link.

Whatever is sent from the UART on the STM32 will be received on the host via its Virtual COM Port; eg, COM13 on your PC or /dev/ttyACM0 on my Raspberry Pi
Whatever is sent to the Virtual COM Port on the host (eg,COM13 or /dev/ttyACM0) will be received at the UART on the STM32.

@suhfi wrote:
but i can say the stm32 nucleo board and raspberry pi 4 has voltage differences

That's all taken care of by the USB link

@suhfi wrote:
i dont want jumper pins to be connected.

The default configuration of the Nucleo board is that USART2 of the stm32f411re microcontroller chip is connected to the ST-Link's VCP - you shouldn't need to modify any links.

A

Andrew Neil

Super User

You need to give more details:

https://community.st.com/t5/community-guidelines/how-to-write-your-question-to-maximize-your-chances-to-find-a/ta-p/575228

@suhfi wrote:
CN1 of stm32.

STM32 is just the microcontroller chip - it has no CN1

Are you talking about a Nucleo-F411RE board ?

https://www.st.com/en/evaluation-tools/nucleo-f411re.html

In which case CN1 is the ST-Link connector.

So you're wanting to use the ST-Link's VCP (Virtual COM Port) for UART communication with your RPi?

https://www.st.com/resource/en/user_manual/um1724-stm32-nucleo64-boards-mb1136-stmicroelectronics.pdf#page=25

Does the ST-Link's VCP show up on the RPi when you plug it in?

M

mƎALLEm

Technical Moderator

Hello @suhfi ,

The title needs to provide a summury of your request. Putting "Communication" as a title doesn't give a clear information about your request. The title needs also to be concise. I'm updating your title then ..

I invite you to read these tips on how to post in this community.

Thank you for your understanding.

A

Andrew Neil

Super User

On using a direct UART connection:

https://community.st.com/t5/stm32-mcus-products/uart-transmission-and-reception-between-stm32-nucleo-64-and/td-p/213120

Or use a USB-to-UART converter ?

S

suhfiAuthor

Visitor II

yes, i want to know how to do the communication between stm32f411re and raspberry pi 4 using usb cable connected to raspberry pi 4 and CN1 of stm32f411re. how can i do that.
i have seen many blogs but none of them are clear how to do thatt.

i want two way communication between them.