RS-485 and IO-Link

利用STM32 USART 实现对RS-485和IO-Link 的驱动使能信号的管理
AN3070
Application note
Managing the Driver Enable signal for RS-485 and IO-Link
communications with the STM32’s USART

Introduction
RS-485 and IO-Link are half-duplex communication protocols that offer easy ways of
implementing the physical layer in industrial networks.
The STM32F10x, which comes with up to 5 UART interfaces and features fast DMA transfer
and low interrupt latency, meets the RS-485 and IO-Link timing specifications.
This application note aims at providing timing measurements of th