ESP32 +8720 Ethernet module+ EWebServer - linker error - multiple definitions #68
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Hi sir, could you help me figure my mistake out? and etc, and etc.... |
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Replies: 2 comments 4 replies
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Hi @sergshadrap Without an MRE, I'm afraid nobody can guess what's wrong with your code. Especially you didn't specify which Ethernet and how you're using the libraries I suggest you start from the simple ESP32 example, such as AdvancedWebServer_ESP32_SPI2 to be sure everything is OK at your end (settings, versions, etc.), then moving on gradually, small step-by-step. Good Luck, |
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Thank you for your attention! #include <Arduino.h>
#include <EthernetWebServer.h>
#ifndef MPPPARAMETERS_H_
#define MPPPARAMETERS_H_
class MppParameters {
public:
MppParameters(EthernetWebServer* webServer);
String getParameter(const char *name);
bool hasParameter(const char *name);
String getParameterName(int i);
String getParameter(int i);
int getParameterCount();
unsigned getUnsignedParameter(const char* name);
float getFloatParameter(const char* name);
int getIntParameter(const char* name);
bool getBoolParameter(const char* name);
String getAsQuery();
ethernetHTTPUpload& getUpload() { return webRequest->upload(); }
protected:
private:
EthernetWebServer* webRequest;
};
#endif /* MPPPARAMETERS_H_ */I would share all the code with you , but there are 7 files with thousand strings of the code.... and further - ETH.begin(ETH_ADDR, ETH_POWER_PIN, ETH_MDC_PIN, ETH_MDIO_PIN, ETH_TYPE, ETH_CLK_MODE)Once again- All your samples has being compiled successfully. |
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That's why I'm so confused. Sorry. You don't need this library for ESP32 + LAN8720, such as WT32_ETH01 Use my WebServer_WT32_ETH01 library with built-in ESP32's WebServer. As specified in Currently supported Ethernet shields/modules, this library is only supporting W5x00, ENC28J60, Teensy 4.1 QNEthernet and Portenta_H7 Ethernet. Good Luck, |
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Ou! Thanks ! That works. BTW in different examples you've got different class name , that is a mistake or they are aliased ? |
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They are totally different classes. WiFiServer, even with more sophisticated name, is simpler with simple features, defined in WiFiServer.h, provides lower level functions, such as void send(int code, const char* content_type = NULL, const String& content = String(""));
void send(int code, char* content_type, const String& content);
void send(int code, const String& content_type, const String& content);
void send(int code, const char* content_type, const char* content);While WebServer, defined in WebServer.h, provides more complex server.on(F("/"), handleRoot);
server.on(F("/test.svg"), drawGraph);
server.on(F("/inline"), []()
{
server.send(200, F("text/plain"), F("This works as well"));
});
server.onNotFound(handleNotFound);
server.begin(); |
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Ok. Got it. Thanks again. |
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That's why I'm so confused. Sorry.
You don't need this library for ESP32 + LAN8720, such as WT32_ETH01
Use my WebServer_WT32_ETH01 library with built-in ESP32's WebServer.
As specified in Currently supported Ethernet shields/modules, this library is only supporting W5x00, ENC28J60, Teensy 4.1 QNEthernet and Portenta_H7 Ethernet.
Good Luck,