Hello guys I hope you are doing very well. I was doing the car robot project and the code throws me the variable error. Could you help me what is missing in the declaration
Im using esp8266 
wifi_robot:51:3: error: ‘ledcSetup’ was not declared in this scope
51 | ledcSetup(pwmChannel, freq, resolution);
 
wifi_robot:54:3: error: ‘ledcAttachPin’ was not declared in this scope
54 | ledcAttachPin(enable1Pin, pwmChannel);
 
wifi_robot:58:3: error: ‘ledcWrite’ was not declared in this scope
58 | ledcWrite(pwmChannel, dutyCycle);