Error: ambiguous overload for 'operator='

[ronibandini]

If you get this error

C:\Users\R\Documents\Arduino\libraries\DFRobot_DF1201S-master\src\DFRobot_DF1201S.cpp:65:21: error: ambiguous overload for 'operator=' (operand types are 'arduino::String' and 'char') playMode = str[10]; ^ Open DFRobot_DF1201S.cpp

And replace playMode = str[10]; by playMode = (const char*)str[10];

If you want to use DfPlayer Pro with UNO R4 Minima, replace in the Play.ino example

if defined(ARDUINO_AVR_UNO) || defined(ESP8266)

include "SoftwareSerial.h"

SoftwareSerial DF1201SSerial(2, 3); //RX TX

else

define DF1201SSerial Serial1

endif

by

SoftwareSerial DF1201SSerial(2, 3);

[qsjhyy]

Thank you very much for the tip

[zongone]

Same problem occurs with Raspberry PI Pico under Arduino. The correct replacement should be: playMode = str[10]; to: playMode += str[10];

playMode = (const char*)str[10]; -> works incorrectly in my case

[sbarabe]

Same here with Arduino Every on PlatformIO.

Changed to: playMode = String(str[10]); and it works

playMode = (const char*)str[10]; -> also works for me