search

oxan / esphome-stream-server

Stream server (serial-to-wifi bridge) for ESPHome
Other
179 stars 72 forks source link

Support for UART hardware flow control (serial data flow control)? #1

Closed Hedda closed 3 years ago

Hedda commented 3 years ago

Does this stream server custom component have support for UART hardware flow control (serial data flow control)?

This feature has also been requested here -> https://github.com/esphome/feature-requests/issues/1126

Some devices require flow control when communicating via UART. In this case, it will be useful to add the ability to configure flow control in the UART component. ESP8266 has a hardware implementation of flow control(RTS, CTS, DTR, DSR), which is enabled through the UARTCONF register. This improvement will make it possible to use MAX485 for communication under the RS485 protocol.

PS: Example of MCU serial devices that can support hardware flow control with the correct firmware is Zigbee SMD modules. Ex:

https://github.com/tube0013/tube_gateways

https://www.tubeszb.com/shop/coordinators/2

https://github.com/zigpy/zigpy/discussions/584

https://github.com/zigpy/zigpy/discussions/743

oxan commented 3 years ago

Not specifically. This component doesn't do anything UART-specific at all, it leaves that to ESPHome. So theoretically if ESPHome sets up the UART with hardware flow control, it should work.

oxan commented 3 years ago

I'm going to close this, as I don't think there's anything actionable here.