WiFi not declared in this scope, couldn't get wifi to work in particle dev

Troubleshooting
1

Hi there,

im using the Particel Dev IDE (not the Web version) and trying to compile my code, but i get following error:

WiFi was not declared in this scope

but the spark_wiring_wifi.h is included. I also included the application.h in another file. Thanks for the help.

Here is the code part that where i get the error, in my socket.cpp file:


    /*
 */
#include "socket.h"
#include "spark_wiring_usbserial.h"
#include "spark_wiring_wifi.h"
#include "Header.h"
#include "MessageDecoder.h"

// An UDP instance to let us send and receive packets over UDP
UDP Udp;

// UDP Port used for two way communication
unsigned int port = 11337;

//mac address of the core
byte mac[6];

//receive buffer
#define MAX_SIZE 1024
char buffer[MAX_SIZE];

//ip for broadcast messages
IPAddress broadcastIp;

void initUdpSocket() {
    //get mac of core
    WiFi.macAddress(mac);

    //start udp server
    Udp.begin(port);
}

byte* getMacAddress() {
    return mac;
}

void setNewBroadcastIpFromWifi() {
    IPAddress myAddr = WiFi.localIP();

    byte first_octet = myAddr[0];
    byte second_octet = myAddr[1];
    byte third_octet = myAddr[2];
    byte fourth_octet = 255;

    broadcastIp = IPAddress(first_octet, second_octet, third_octet, fourth_octet);
    Serial.print("Broadcast address: ");
    Serial.println(broadcastIp);
}

int sendBroadcastMsg(unsigned char *b, int sizeInBytes) {
    //set broadcast address, zz jedesmal neu geholt. kostet glaub 10ms oder so,
    //aber sonst beim startup n race problem
    setNewBroadcastIpFromWifi();

    //send
    Udp.beginPacket(broadcastIp, port);
    Udp.write(b, sizeInBytes);
    Udp.endPacket();
}

void sendUDPMessage(unsigned char *b, int sizeInBytes) {
    setNewBroadcastIpFromWifi();
    Udp.beginPacket(broadcastIp, port);
    Udp.write(b, sizeInBytes);
    Udp.endPacket();
}

/**
 * Return 1 if package was available, otherwise 0
 */
int readUpdPackage() {
    int rcvd = Udp.parsePacket();
    if (rcvd > 0) {
        Serial.print("Received UPD packet, length: ");
        Serial.println(rcvd);
        // Read data
        Udp.read(buffer, rcvd);

        //decode
        decodeIncomingUdpPackage((unsigned char*)buffer, rcvd);

        //more bytes received
        if (rcvd > MAX_SIZE) {
            Serial.println("Too large packet");
            while (Udp.available())
                Udp.read();
        }

        Serial.println("Received UPD packet read successful");
        return 1;
    }
    return 0;
}

void flushUdpSocket() {
    Udp.flush();
}
2

You should #include "application.h" in every module you are using (either in the .cpp or an .h file that’s included therein).

3

uhh thanks, that did the trick…removed the

#include "spark_wiring_usbserial.h"
#include "spark_wiring_wifi.h"

and included

#include "application.h"

and it worked^^

thank you:) but why do have to use one global include everywhere in my code?

4

@Silence66, it is exactly like Arduino.h is included in arduino-compatible files.

5

ok thanks…didn’t know and it was my old code that worked in old spark times;)

6

@Silence66, even in “old spark times” we used “application.h”. However, now with the HAL abstraction layer, it makes it more important to use.

7

yap definitly noticed;)

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