RS485
ESP32 Open IoT and IIoT Gateways (P01 & P02)
Link to repositories:
In this example:
- transceiver 1 (A1 and B1 pins) is configured as a receiver
- transceiver 2 (A2 and B2 pins) is configured as a transmitter
Connect the ports as shown in the picture.
In this way there is a possibility to do a test and adapt to working with external devices. On the developer side there is an option to configure serial port parameters.
Default settings:
- baud rate: 115200
- data bits: 8
- parity bits: 0
- stop bits: 1
- receiver timeout: 3s
Voltage levels in RS485 standard are equal to MCU logic levels 0-3.3 V
After flashing, open serial port monitor and find out if the demo works properly.
