Error Initializing Objects in C++

The following code will cause an error.

US>Error Contents
main.cpp:5:44:error:use of deleted function 'SerialPrint::SerialPrint()'
SerialPrint_serialPrint=SerialPrint();

main.cpp

#include "main.h"
// SerialPrint_serialPrint;

void setup() {
    SerialPrint_serialPrint=SerialPrint();
    _serialPrint.beginPrint(DEBUG_PORT_RX, DEBUG_PORT_TX, DEBUG_PORT_BAUDRATE);
}

void loop() {

}

main.h

#pragmaonce
# include "Arduino.h"
# include "SerialPrint.h"

#define DEBUG_PORT_RX11
#define DEBUG_PORT_TX12
#define DEBUG_PORT_BAUDRATE 4800

void setup();
void loop();

SerialPrint.cpp

#include "SerialPrint.h"
# include <string.h>

/**
 * US>Serial port initialization for console display
 * */

voidSerialPrint::beginPrint(uint8_trx,uint8_ttx,longbaudrate){
    _serial=SoftwareSerial(rx,tx);
    _serial.begin(baudrate);
}

voidSerialPrint::print(const char*message){
    _serial.print(message);
}

voidSerialPrint::print(String message){
    _serial.print(message);
}

voidSerialPrint::println(const char*message){
    _serial.println(message);
}

voidSerialPrint::println(String message){
    _serial.println(message);
}

SeriapPrint.h

#pragmaonce
# include <SoftwareSerial.h>


classSerialPrint {
public:
    void beginPrint(uint8_trx, uint8_ttx, long border);
    // static void cmpStr(const char*str1, const char*str2, char*buf);
    void print(const char*message);
    void println(const char*message);
    void print (String message);
    void println(String message);
private:
    SoftwareSerial_serial;
};

c++ arduino

2022-09-30 21:43

1 Answers

in the setup() function in main.cpp

SerialPrint_serialPrint=SerialPrint();

In , you are generating an instance of the SerialPrint class.All member variables in the SerialPrint class are also initialized.In this case, SoftwareSerial_serial; is also initialized. We did not create a default constructor for SerialPrint(), so all members are initialized with the default constructor.

The Arduino documentation suggests that the SoftwareSerial class does not have a default constructor.As a result, SoftwareSerial_serial; cannot be initialized, resulting in an error.

In fact, the SerialPrint::beginPrint() method passes arguments to the SoftwareSerial constructor, so you can do this with the SoftwareSerial.

2022-09-30 21:43

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