Hi, I want to use the google api to get the geolocation of the nano33iot board via wifi. When I curl the request I get a normal response - api key is not restricted in any way, on arduino however i alwas get false when i call client.connect("www.googleapis.com", 443). I have tried with other SSL sites (https://jsonplaceholder.typicode.com/posts/1), where the connection works normally.
Any help or ideas will be much appreciated!
The whole code:
#include <WiFiNINA.h>
#include <ArduinoJson.h>
#include "secrets.h"
// Server details
const char* server = "www.googleapis.com";
const int port = 443;
void setup() {
Serial.begin(9600);
// Connect to Wi-Fi
Serial.print("Connecting to ");
Serial.println(SECRET_SSID);
WiFi.begin(SECRET_SSID, SECRET_PASS);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.print(".");
}
Serial.println("\nConnected to WiFi");
// Get location
getLocation();
}
void loop() {
// put your main code here, to run repeatedly:
}
void getLocation() {
// Scan for Wi-Fi networks
int numNetworks = WiFi.scanNetworks();
if (numNetworks == -1) {
Serial.println("Failed to scan WiFi networks");
return;
}
// Create JSON request payload
StaticJsonDocument<1024> doc;
JsonArray wifiAccessPoints = doc.createNestedArray("wifiAccessPoints");
for (int i = 0; i < numNetworks; i++) {
uint8_t bssid[6];
WiFi.BSSID(i, bssid);
JsonObject wifiObject = wifiAccessPoints.createNestedObject();
wifiObject["macAddress"] = macToString(bssid);
wifiObject["signalStrength"] = WiFi.RSSI(i);
}
String requestBody;
serializeJson(doc, requestBody);
// Make HTTPS request to Google Geolocation API
WiFiSSLClient client;
if (!client.connect(server, port)) {
Serial.println("Connection to server failed");
return;
}
// Send HTTP POST request
client.println("POST /geolocation/v1/geolocate?key=" + String(SECRET_GOOGLE_API) + " HTTP/1.1");
client.println("Host: " + String(server));
client.println("Content-Type: application/json");
client.println("Connection: close");
client.print("Content-Length: ");
client.println(requestBody.length());
client.println();
client.println(requestBody);
// Read response
while (client.connected() || client.available()) {
if (client.available()) {
String line = client.readStringUntil('\n');
if (line == "\r") {
break;
}
}
}
String response = "";
while (client.available()) {
response += client.readString();
}
client.stop();
// Parse response
StaticJsonDocument<1024> responseDoc;
DeserializationError error = deserializeJson(responseDoc, response);
if (error) {
Serial.print("deserializeJson() failed: ");
Serial.println(error.f_str());
return;
}
float latitude = responseDoc["location"]["lat"];
float longitude = responseDoc["location"]["lng"];
float accuracy = responseDoc["accuracy"];
// Print location data
Serial.print("Latitude: ");
Serial.println(latitude, 7);
Serial.print("Longitude: ");
Serial.println(longitude, 7);
Serial.print("Accuracy: ");
Serial.println(accuracy);
}
String macToString(const uint8_t* mac) {
String macStr = "";
for (int i = 0; i < 6; ++i) {
if (mac[i] < 0x10) {
macStr += "0";
}
macStr += String(mac[i], HEX);
if (i < 5) {
macStr += ":";
}
}
return macStr;
}