Paul French asked 4 years ago
I am new to coding and controllers, so apologies if this is an elementary question. I could not find anything on web to explain.
I am trying to use a keypad.h library and a wifi library which require 9600 and 115200. How do I handle this? I’m using NodeMCU ESP32s and simple 4×4 keypad. I have the wifi library working ok and now trying to implement keypad to my project. Many thanks!
Paul
Sara Santos Staff answered 4 years ago
Hi.
Are you referring to the Serial Monitor baud rate?
You don’t need to worry about that.
Choose one of those baud rates, and it should work.
Or are you asking about a different issue?
Regards,
Sara
Steve Mercer answered 4 years ago
If the keypad uses serial with a different baud rate you will require a separate serial port. The ESP32 has 3 UART controllers so it would be just a matter of connecting the wires to the correct pins.
Paul French answered 4 years ago
Yes, the keypad.h library seems to require 9600 and the wifi.h library seems to require 115200. So assuming I connect to the correct UART pins, I can use different baud rates?? Thanks!
Steve Mercer answered 4 years ago
Yes. Connect to one of the UART’s that the USB port is not using then each connection can use different baud rates.