STM32L4 training: 05.1 Communication peripherals - USART theory

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Please see below hands-on mandatory pre-requisites and additional links.

Hands-on technical pre-requisites:
- PC with admin rights running Windows 7 or higher
- Mini USB cable


  1. STMicroelectronics
  2. STM32L4
  3. STMicroelectronics
  4. ST
  5. STM32
  6. STMicro
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Hi. So i have a question about Multiprocessor Mode: master's Tx connects to several slaves' Rx lines and that is fine, but master's Rx connects to several slaves' Tx lines, which means the slaves have their Tx lines directly connected to each other, these lines being outputs... Do the MCU pins implement some kind of protection for these pins when UART is set to Multiprocessor Mode or do i need to use some hardwire of my own? Do i just connect those pins to each other directly?

lightofheavens