AN3070管理驱动程序启用的STM32™的USART的RS-485和IO-Link的通信信号

AN3070管理驱动程序启用的STM32™的USART的RS-485和IO-Link的通信信号

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