add support for ESP32

[proppy]

using the official esp32 arduino core:
https://github.com/espressif/arduino-esp32

[Ahmed-Talaat]

are there any updates on that?

[proppy]

@Ahmed-Talaat I'm experimenting in that branch: https://github.com/proppy/firebase-arduino/tree/esp32

Got it to compile, but still have TLS issue when making the actual request.

[danielcrowley]

Is there anything in particular that we can help with @proppy ?

[proppy]

@danielcrowley sure feel free to try out the branch, and let me know if you also get a TLS error ;)

[bestpika]

I got an error.

src/FirebaseArduino.h:22:65: fatal error: third-party/ArduinoHttpClient/src/ArduinoHttpClient.h: No such file or directory

[proppy]

@bestpika yes, you need to checkout https://github.com/arduino-libraries/ArduinoHttpClient in the third-party directory.

[bestpika]

@proppy I do it, but got another error (I use example FirebaseDemo_ESP8266 and change #include <WiFi.h>).

FirebaseDemo_ESP8266:43: error: 'Firebase' was not declared in this scope

   Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);

   ^

FirebaseDemo_ESP8266:50: error: 'Firebase' was not declared in this scope

   Firebase.setFloat("number", 42.0);

   ^

'Firebase' was not declared in this scope

So I use WiFiClientSecure to direct send data to <...>.firebaseio.com...

[sivakornb]

@proppy
My thing is the same Is there a way to fix it?

MacAddress:37: error: 'Firebase' was not declared in this scope

Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);

^
C:\Users\Sivakorn\Documents\Arduino\MacAddress\MacAddress.ino: In function 'void loop()':

MacAddress:45: error: 'Firebase' was not declared in this scope

Firebase.setFloat("number", 42.0);

^
<

[gepd]

There is any update on this?

I've tried to install the branch proposed by @proppy with not luck. There is any way how I could help?

[davidvasicek]

did anyone get the right solution? my error is: 'Firebase' was not declared in this scope

[davidvasicek]

@proppy
could you help us? Please.

[proppy]

That should be easier to implement now that they added an HTTPClient w/ SLL in the ESP32 arduino core that is supposed to match the API for the ESP8266:
https://github.com/espressif/arduino-esp32/commits/master/libraries/HTTPClient

[blotfi]

@proppy
Could you commit this to your branch https://github.com/proppy/firebase-arduino/tree/esp32
We really need a Firebase access with ESP32 Arduino
Thanls

[blotfi]

I had to add
extern FirebaseArduino Firebase;
at the end of FirebaseArduino.h
and there is a problem of
EmbeRec:92: error: no matching function for call to 'FirebaseArduino::setString(const char [14], String&)'
but it can be solved

but for

C:\Users\xxxx\Documents\Arduino\hardware\espressif\esp32\libraries\firebase-arduino-esp32\src\FirebaseArduino.cpp:36:66: error: no matching function for call to 'HttpClient::HttpClient()'

FirebaseArduino::FirebaseArduino(Client& client) : client_(client) {}

In file included from C:\Users\xxxx\Documents\Arduino\hardware\espressif\esp32\libraries\firebase-arduino-esp32\src\third-party/ArduinoHttpClient/src/ArduinoHttpClient.h:8:0,
.....
C:\Users\xxx\Documents\Arduino\hardware\espressif\esp32\libraries\firebase-arduino-esp32\src\third-party/ArduinoHttpClient/src/HttpClient.h:53:5: note: candidate: HttpClient::HttpClient(Client&, const IPAddress&, uint16_t)

HttpClient(Client& aClient, const IPAddress& aServerAddress, uint16_t aServerPort = kHttpPort);

I don't know how to deal with it

[proppy]

@blotfi I think my branch was using a patched version of ArduinoHttpClient:

diff --git a/src/HttpClient.cpp b/src/HttpClient.cpp
index b46f628..4fb7694 100644
--- a/src/HttpClient.cpp
+++ b/src/HttpClient.cpp
@@ -28,6 +28,17 @@ HttpClient::HttpClient(Client& aClient, const IPAddress& aServerAddress, uint16_
   resetState();
 }
 
+void HttpClient::begin(Client& aClient, const char* aServerName, uint16_t aServerPort)
+{
+  iClient = &aClient;
+  iServerName = aServerName;
+  iServerAddress = IPAddress();
+  iServerPort = aServerPort;
+  iConnectionClose = true;
+  iSendDefaultRequestHeaders = true;
+  resetState();
+}
+
 void HttpClient::resetState()
 {
   iState = eIdle;
diff --git a/src/HttpClient.h b/src/HttpClient.h
index e627b21..6cf21b6 100644
--- a/src/HttpClient.h
+++ b/src/HttpClient.h
@@ -46,10 +46,12 @@ public:
 // FIXME Write longer API request, using port and user-agent, example
 // FIXME Update tempToPachube example to calculate Content-Length correctly
 
+    HttpClient() {};
     HttpClient(Client& aClient, const char* aServerName, uint16_t aServerPort = kHttpPort);
     HttpClient(Client& aClient, const String& aServerName, uint16_t aServerPort = kHttpPort);
     HttpClient(Client& aClient, const IPAddress& aServerAddress, uint16_t aServerPort = kHttpPort);
 
+    void begin(Client& aClient, const char* aServerName, uint16_t aServerPort = kHttpPort);
     /** Start a more complex request.
         Use this when you need to send additional headers in the request,
         but you will also need to call endRequest() when you are finished.

[blotfi]

@proppy where canI get it so ?
or can you put all he stuf on ESP32 dev tree https://github.com/proppy/firebase-arduino/tree/esp32

[proppy]

@blotfi you need to make the same modification that I linked, but even after than there is still an SSL error we need to solve.

So it's not working yet.

[blotfi]

@proppy Do you have time to solve the issues? I am in Electrical Engineering / Teacher, so not a really good programmer ;-)
I can test of course to help you

[blotfi]

@proppy Hi, do you plan to start again the https://github.com/proppy/firebase-arduino/tree/esp32
Thanks

[blotfi]

@proppy Hi, is there any new dev for ESP32 ?
thanks

[blasco]

Same question, any future support for ESP32? Thanks for all development, I would also be willing to help!

[proppy]

One good way to support the ESP32 would be to standardize on the ArduinoHttpClient or the arduino Client interface https://www.arduino.cc/en/Reference/ClientConstructor interface, instead using of using the HttpClient in the esp8266 core.

Tracking this here: #344.

[Curclamas]

@proppy any news regarding ESP32 support?

[proppy]

@Curclamas I'd welcome some more testing on #353 if you want to give it a try.

[lucianoracing]

Ola a todos!
Utilisei o seguinte procedimento para logar ao firebase (ESP32 + FIREBASE):
Segue um exemplo de contador:

---

#include <WiFi.h>
#include <WiFiClientSecure.h>

const char* ssid = "xxxxxxxx"; // Sua rede WIFI
const char* password = "xxxxxxxx"; //Senha do wifi

const char* host = "xxxxxxxxxx.firebaseio.com"; //Login firebase
const char* firebase_auth = "xxxxxxxxx"; //Password firebase

String user_path = "usuario";// Usuario cadastrado no firebase database
int count = 0;

WiFiClientSecure client;

//**********************
void setup() {
Serial.begin(115200);

WiFi.begin( ssid, password );

Serial.print( "connecting" );
while ( WiFi.status() != WL_CONNECTED ) {
Serial.print(".");
delay(500);
}
Serial.println();
Serial.print( "connected: " );
Serial.println( WiFi.localIP() );

delay(2000);
}
//**********************
void loop() {
sendPatchRequest( "text", String( count ) );
count++;
if( count > 10 ) count = 0;
}
//******Firebase Realtime Database **************
void sendPatchRequest( String str1, String str2 ){
if( !client.connect( host, 443 ) ){
Serial.println( "Connection failed!" );
}else{
Serial.println( "Connected to server!" );
String req_url_str;
req_url_str = "PATCH /";
req_url_str += user_path;
req_url_str += ".json?auth=";
req_url_str += String( firebase_auth );
req_url_str += " HTTP/1.1\r\n";

String body = "{\"" + str1 + "\":\"" + str2 + "\"}";

String head;
head = "Host: ";
head += String( host ) + "\r\n";
head += "Connection: keep-alive\r\n";
head += "Content-Length: ";
head += String( body.length() ) + "\r\n";
head += "\r\n"; 

client.print( req_url_str );
client.print( head );
client.print( body );

Serial.println( "####### Solicitação de PATCH HTTP #######" );
Serial.print( req_url_str );
Serial.print( head );
Serial.println( body );

checkServerRespons();

delay(2);
client.stop(); 
delay(2);

}
}
//***********************************
void checkServerRespons(){
//É importante receber todas as respostas do servidor do Firebase
Serial.println("####### Firebase Server HTTP Resposta #######");
while( client.connected() ){
String resp_str = client.readStringUntil('\n'); //Ler a string
Serial.println( resp_str );
if( resp_str == "\r" ) { //Linha em branco
Serial.println("------------- Cabeçalho da Resposta");
break;
}
}
//Após o retorno do cabeçalho de resposta, a parte do corpo volta
while( client.available() ){
char c = client.read();
Serial.print( c );
}
Serial.println("\r\n----------- Corpo Recebido");
}

---

Fonte: https://www.mgo-tec.com
No fire base fica assim:

*****FIREBASE
Nome_Banco_de_dados
usuario
text:"0"

[robertomap]

Worked just fine! Thanks lucianoracing!

[a-ma-n]

can you please translate instructions into english?