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Nucleof446 UART

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harry123
Senior

‎2024-09-25 01:54 AM - last edited on ‎2024-09-25 03:37 AM by

Hi

  • I am trying to communicate between arm processor and nucleo board through uart 
  • The processor has a type b usb , to interface with computer.
  • For the same usb I am connecting my Nucelo board through usb type B mini and sending the data through it
  • When i connect the device to laptop/computer the communication happens, and when i connect nucleo the communication does not happen.
  • Im giving both power supply and uart communication from usb cable.1.jpeg
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harry123
Senior
In response to Andrew Neil

‎2024-09-25 08:33 PM

  •     Yes It supports a hub
  •      Will the same STM UART transmit receive code that is used for VCP  i.e teraterm/putty works for AT91SAM
  •      As the Processor is outdated anything to be installed or modification to drivers is difficult
  •      So wanted to find easy way to interface Stm and AT91SAM with the already existing setup.
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Andrew Neil
Guru
In response to harry123

‎2024-09-26 02:53 AM - edited ‎2024-09-26 03:02 AM

@harry123 wrote:
  •      Will the same STM UART transmit receive code that is used for VCP  i.e teraterm/putty works for AT91SAM

The whole point of the standard USB device profiles is that the device is completely oblivious to the nature of the host - it neither knows nor cares whether the host is a PC or a Mac or some  sort of Linux or whatever.

Similarly the Host is completely oblivious to the nature of the device - it just sees a standard Virtual Serial Port.

So the question is: does your SAM board support a VCP?

You can easily find out by just plugging it in - does a VCP device appear?)

It will probably appear as a /dev/ttyACMx (maybe a /dev/ttyUSBx) ::(:(:(

https://community.st.com/t5/stm32-mcus-products/communication-between-nucleo-f411re-and-raspberry-pi-using-st/m-p/721528/highlight/true#M261168

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