Error finding HardwareSerial.h

[mornindew]

Hi,

I am brand new to Arduino so apologies that this is probably a very simple issue.

I am pushing my code to arduino (rover car) and it is complaining that it cannot find a the hardwareSerial.h library. I don't know how to get it included in my library. I cannot find it in the library manager. Any help would be appreciated.

Error:

/tmp/600692549/SmartCar_Core_20200904/SmartCar_Core_20200904.ino:841:10: fatal error: hardwareSerial.h: No such file or directory
#include "hardwareSerial.h"
^~~~~~~~~~~~~~~~~~
compilation terminated.
exit status 1

Code Where the compilation is failing:

#include <IRremote.h>
#include <Servo.h>
#include <stdio.h>
#include "HardwareSerial.h"
#include "ArduinoJson-v6.11.1.h" //Use ArduinoJson Libraries

[anon57585045]

Why are you trying to include a standard part of the core? hardwareSerial is already included by default. Also you put it in quotes, which means it would have to be in your sketch folder.

[groundFungus]

All that you should need to be able to use the hardware serial is a Serial.begin(baud) function in setup() to initialize the Serial port.

What Arduino board are you using?

[mornindew]

Thank you for your responses. The code is actually the code provided by my Elegoo Smart robot 3.0. I purchased it to o with my son, I installed the first lesson (successfully) an then tried to revert back to the fully installed working robot (to confirm that I can always recover). I didn't actually write the code but I attached it here.

I am not a C/C++ expert but did think that the local reference was odd.

My board is an Uno Rev 3 but it all came as part of this kit. Amazon.com

Thanks again

SmartCar_Core_20200904.zip (35.3 KB)

[david_2018]

Using quotes should still search the default library folders if not found in the sketch folder. Unfortunately the library file starts with a capital letter, so would not match if the operating system is case-sensitive.