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- Sun May 14, 2023 7:58 am
- Forum: General discussion
- Topic: Serial port part add RS485 chip DE pin control
- Replies: 6
- Views: 2174
Re: Serial port part add RS485 chip DE pin control
When the TXD serial port is being sent, an I/O can automatically change to high level. When the TXD port is sent, it automatically changes to low level. In this way, you can control the sending and receiving of the RS485 chip In RS485 communication, the TXD (transmit data) line is responsible for t...