Code does not compile

[lesept777]

I want to try a code found here : https://techtutorialsx.com/

Here is the error message
`Arduino : 1.8.9 (Windows 10), Carte : "LOLIN D32, Default, 80MHz, 921600, None"

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:259:32: error: field 'call' has incomplete type 'tcpip_api_call_data'

 struct tcpip_api_call_data call;

                            ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:259:12: note: forward declaration of 'struct tcpip_api_call_data'

 struct tcpip_api_call_data call;

        ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp: In function 'esp_err_t _tcp_output(tcp_pcb*)':

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:295:70: error: invalid conversion from 'err_t ()(tcpip_api_call_data) {aka signed char ()(tcpip_api_call_data)}' to 'tcpip_api_call_fn {aka signed char ()(tcpip_api_call)}' [-fpermissive]

 tcpip_api_call(_tcp_output_api, (struct tcpip_api_call_data*)&msg);

                                                                  ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:295:70: error: cannot convert 'tcpip_api_call_data*' to 'tcpip_api_call*' for argument '2' to 'err_t tcpip_api_call(tcpip_api_call_fn, tcpip_api_call*)'

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:259:12: note: class type 'tcpip_api_call_data' is incomplete

 struct tcpip_api_call_data call;

        ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp: In function 'esp_err_t _tcp_write(tcp_pcb*, const char*, size_t, uint8_t)':

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:311:69: error: invalid conversion from 'err_t ()(tcpip_api_call_data) {aka signed char ()(tcpip_api_call_data)}' to 'tcpip_api_call_fn {aka signed char ()(tcpip_api_call)}' [-fpermissive]

 tcpip_api_call(_tcp_write_api, (struct tcpip_api_call_data*)&msg);

                                                                 ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:311:69: error: cannot convert 'tcpip_api_call_data*' to 'tcpip_api_call*' for argument '2' to 'err_t tcpip_api_call(tcpip_api_call_fn, tcpip_api_call*)'

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:259:12: note: class type 'tcpip_api_call_data' is incomplete

 struct tcpip_api_call_data call;

        ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp: In function 'esp_err_t _tcp_recved(tcp_pcb*, size_t)':

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:326:70: error: invalid conversion from 'err_t ()(tcpip_api_call_data) {aka signed char ()(tcpip_api_call_data)}' to 'tcpip_api_call_fn {aka signed char ()(tcpip_api_call)}' [-fpermissive]

 tcpip_api_call(_tcp_recved_api, (struct tcpip_api_call_data*)&msg);

                                                                  ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:326:70: error: cannot convert 'tcpip_api_call_data*' to 'tcpip_api_call*' for argument '2' to 'err_t tcpip_api_call(tcpip_api_call_fn, tcpip_api_call*)'

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:259:12: note: class type 'tcpip_api_call_data' is incomplete

 struct tcpip_api_call_data call;

        ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp: In function 'esp_err_t _tcp_connect(tcp_pcb*, ip_addr_t*, uint16_t, tcp_connected_fn)':

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:342:71: error: invalid conversion from 'err_t ()(tcpip_api_call_data) {aka signed char ()(tcpip_api_call_data)}' to 'tcpip_api_call_fn {aka signed char ()(tcpip_api_call)}' [-fpermissive]

 tcpip_api_call(_tcp_connect_api, (struct tcpip_api_call_data*)&msg);

                                                                   ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:342:71: error: cannot convert 'tcpip_api_call_data*' to 'tcpip_api_call*' for argument '2' to 'err_t tcpip_api_call(tcpip_api_call_fn, tcpip_api_call*)'

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:259:12: note: class type 'tcpip_api_call_data' is incomplete

 struct tcpip_api_call_data call;

        ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp: In function 'esp_err_t _tcp_close(tcp_pcb*)':

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:356:69: error: invalid conversion from 'err_t ()(tcpip_api_call_data) {aka signed char ()(tcpip_api_call_data)}' to 'tcpip_api_call_fn {aka signed char ()(tcpip_api_call)}' [-fpermissive]

 tcpip_api_call(_tcp_close_api, (struct tcpip_api_call_data*)&msg);

                                                                 ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:356:69: error: cannot convert 'tcpip_api_call_data*' to 'tcpip_api_call*' for argument '2' to 'err_t tcpip_api_call(tcpip_api_call_fn, tcpip_api_call*)'

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:259:12: note: class type 'tcpip_api_call_data' is incomplete

 struct tcpip_api_call_data call;

        ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp: In function 'esp_err_t _tcp_abort(tcp_pcb*)':

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:371:69: error: invalid conversion from 'err_t ()(tcpip_api_call_data) {aka signed char ()(tcpip_api_call_data)}' to 'tcpip_api_call_fn {aka signed char ()(tcpip_api_call)}' [-fpermissive]

 tcpip_api_call(_tcp_abort_api, (struct tcpip_api_call_data*)&msg);

                                                                 ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:371:69: error: cannot convert 'tcpip_api_call_data*' to 'tcpip_api_call*' for argument '2' to 'err_t tcpip_api_call(tcpip_api_call_fn, tcpip_api_call*)'

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:259:12: note: class type 'tcpip_api_call_data' is incomplete

 struct tcpip_api_call_data call;

        ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp: In function 'esp_err_t _tcp_bind(tcp_pcb*, ip_addr_t*, uint16_t)':

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:386:68: error: invalid conversion from 'err_t ()(tcpip_api_call_data) {aka signed char ()(tcpip_api_call_data)}' to 'tcpip_api_call_fn {aka signed char ()(tcpip_api_call)}' [-fpermissive]

 tcpip_api_call(_tcp_bind_api, (struct tcpip_api_call_data*)&msg);

                                                                ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:386:68: error: cannot convert 'tcpip_api_call_data*' to 'tcpip_api_call*' for argument '2' to 'err_t tcpip_api_call(tcpip_api_call_fn, tcpip_api_call*)'

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:259:12: note: class type 'tcpip_api_call_data' is incomplete

 struct tcpip_api_call_data call;

        ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp: In function 'tcp_pcb* _tcp_listen_with_backlog(tcp_pcb*, uint8_t)':

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:401:70: error: invalid conversion from 'err_t ()(tcpip_api_call_data) {aka signed char ()(tcpip_api_call_data)}' to 'tcpip_api_call_fn {aka signed char ()(tcpip_api_call)}' [-fpermissive]

 tcpip_api_call(_tcp_listen_api, (struct tcpip_api_call_data*)&msg);

                                                                  ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:401:70: error: cannot convert 'tcpip_api_call_data*' to 'tcpip_api_call*' for argument '2' to 'err_t tcpip_api_call(tcpip_api_call_fn, tcpip_api_call*)'

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:259:12: note: class type 'tcpip_api_call_data' is incomplete

 struct tcpip_api_call_data call;

        ^

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp: In member function 'void AsyncClient::_dns_found(ip_addr*)':

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:643:33: error: invalid use of incomplete type 'struct ip_addr'

     connect(IPAddress(ipaddr->u_addr.ip4.addr), _connect_port);

                             ^

In file included from C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.cpp:24:0:

C:\Users\Chuwi\Documents\Arduino\libraries\AsyncTCP\src\AsyncTCP.h:46:8: note: forward declaration of 'struct ip_addr'

struct ip_addr;

    ^

Plusieurs bibliothèque trouvées pour "WiFi.h"
Utilisé : C:\Users\Chuwi\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.0\libraries\WiFi
Non utilisé : C:\Program Files (x86)\Arduino\libraries\WiFi
exit status 1
Erreur de compilation pour la carte LOLIN D32

Ce rapport pourrait être plus détaillé avec
l'option "Afficher les résultats détaillés de la compilation"
activée dans Fichier -> Préférences.
`

And here is the code
#include "WiFi.h"
#include <FS.h>
#include <AsyncTCP.h>
#include "ESPAsyncWebServer.h"

const char* ssid = "---";
const char* password = "---";

AsyncWebServer server(80);

void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);
Serial.printf("Connecting to %s ", ssid);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.print("\nServer IP: ");
Serial.println(WiFi.localIP());
Serial.println("\n\n");

server.on("/hello", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(200, "text/plain", "Hello World");
});

server.on("/printIp", HTTP_GET, [](AsyncWebServerRequest * request) {
request->send(200, "text/plain", "ok");
Serial.print("Received request from client with IP: ");
Serial.println(request->client()->remoteIP());
});

server.on(
"/post", HTTP_POST, [](AsyncWebServerRequest * request) {}, NULL,
[](AsyncWebServerRequest * request, uint8_t *data, size_t len, size_t index, size_t total) {
for (size_t i = 0; i < len; i++) Serial.write(data[i]);
Serial.println();
request->send(200);
});

server.begin();
}

void loop() {}

I'm using the latest IDE version 1.8.9 (but I had the same issue with v1.8.0) and selected either LOLIN D32 or ESP32 dev module

[gtalusan]

I'm having the same problem using the ESP32 1.0.3-rc1 Arduino package. Reverting 6fab772 in this repository makes it compile.

[atanisoft]

If you are still encountering this with arduino-esp32 1.0.2 or 1.0.3-rc1 you are not compiling against that version. You will need to clear the arduino IDE cached libraries and platform versions and ensure it is compiling against the latest versions.

[lesept777]

I went back to 1.8.5 and everything is fine now, thanks

[atanisoft]

@lesept777 if your issue is fixed please consider closing this issue.