I have following setup -
3.3v atmega connected to arduino board - only 3.3,gnd,tx,rx - which is connected to pc-usb on com3
Nodemcu with mongoose connected to pc usb on com5
Tx0 and gnd connected to aforementioned atmega setup
Now I have written c code for mongoose to write "1" on uart. I have also disabled debug.stdout Nd debug.stderr by setting them to -1
Problem is - that uart data shows up in mos webconsole connected via port 5 but does not arrive at either atmega or arduino board on com3
Please help me if there is any solution to this strange issue.