Platformio: multiple definition of [duplicate] - c++

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multiple definition in header file
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multiple definition error c++
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I'm using VS Code with Platformio Plugin for an Arduino that is communicating with an Raspberry.
I receive the error "multiple definition of... (see below).
I can´t see that I'm importing my own file multiple times and I can't get the link to the function requestEvent().
my main:
#include <Arduino.h>
#include <Wire.h>
#include <comm.cpp>
#define SLAVE_ADDRESS 0x08
volatile boolean receiveFlag = false;
char temp[32];
//String command;
const char* message_event = "init";
RaspiArduStatus comm_status{false};
void requestEvent() {
Wire.write(message_event);
}
void receiveEvent(int howMany) {
for (int i = 0; i < howMany; i++) {
temp[i] = Wire.read();
temp[i + 1] = '\0'; //add null after ea. char
}
for (int i = 0; i < howMany; ++i)
temp[i] = temp[i + 1];
receiveFlag = true;
}
void setup() {
Wire.begin(8); // join i2c bus with address #8
Wire.onRequest(requestEvent); // register event
// initialize i2c as slave
Wire.begin(SLAVE_ADDRESS);
// define callbacks for i2c communication
Wire.onReceive(receiveEvent);
Serial.begin(9600);
}
void loop() {
Serial.println("Registering event");
message_event = "event";
Wire.onRequest(requestEvent); // register event
Serial.println("Receiving");
if (receiveFlag == true) {
Serial.println(temp);
receiveFlag = false;
if (strcmp (temp, "test")==0)
{
Serial.println("Erkannt");
message_event = "Erkannt";
Wire.onRequest(requestEvent);
}
}
delay(2000);
}
my included file:
class RaspiArduStatus {
bool status_;
public:
explicit RaspiArduStatus(bool s) : status_{s} {}
void set_low();
void set_high();
bool get_status() const;
};
void RaspiArduStatus::set_high()
{
status_ = true;
}
void RaspiArduStatus::set_low()
{
status_ = false;
}
and theres the error:
Building in release mode
Compiling .pio/build/nanoatmega328/src/comm.cpp.o
Compiling .pio/build/nanoatmega328/src/main.cpp.o
Linking .pio/build/nanoatmega328/firmware.elf
.pio/build/nanoatmega328/src/main.cpp.o (symbol from plugin): In function `requestEvent()':
(.text+0x0): multiple definition of `RaspiArduStatus::set_high()'
.pio/build/nanoatmega328/src/comm.cpp.o (symbol from plugin):(.text+0x0): first defined here
.pio/build/nanoatmega328/src/main.cpp.o (symbol from plugin): In function `requestEvent()':
(.text+0x0): multiple definition of `RaspiArduStatus::set_low()'
.pio/build/nanoatmega328/src/comm.cpp.o (symbol from plugin):(.text+0x0): first defined here
collect2: error: ld returned 1 exit status
*** [.pio/build/nanoatmega328/firmware.elf] Error 1
I already copied the content of my included file to my main.cpp and removed the include. Didn't change anything.