I’m really confused.
I tried using the Software Serial Monitor sketch and the Hardware Serial Monitor. Neither seems to work for me.
Once I determined that R2 can’t use software-based serial, I stuck with the Hardware Monitor. All I’m trying to so is type some AT commands in the Arduino IDE’s serial monitor screen and then see the results back from the ESP8266. I believe that’s what the serial monitor sketch is intended to do. Can’t make it work.
Looking at the schematic for the R2, it looks like the internal serial connection between the ATmega chip and the ESP8266 is on D0/D1. The same pins used for uploading code and any Serial.print (etc) I/O. So how can the posted sketches that use both Serial. And Serial1. Work if they’re addressing the same pins? Or, if Serial1 doesn’t use D0/D1, what pins does it use and why isn’t the ESP8266 connected to them?