autoplant: implement enterprise wifi support

autoplant/autoplant.ino

@@ -45,6 +45,52 @@ PubSubClient mqtt;
 
 Adafruit_BME280 bme;	// I2C
 
+#ifdef WIFI_ENTERPRISE_ENABLED
+// Ref https://gist.github.com/Matheus-Garbelini/2cd780aed2eddbe17eb4adb5eca42bd6
+extern "C" {
+#include "user_interface.h"
+#include "wpa2_enterprise.h"
+#include "c_types.h"
+}
+#endif
+
+void connect_wifi() {
+	#ifndef WIFI_ENTERPRISE_ENABLED
+	WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
+	#else
+	// Ref https://gist.github.com/Matheus-Garbelini/2cd780aed2eddbe17eb4adb5eca42bd6
+	// Setting ESP into STATION mode only (no AP mode or dual mode)
+	wifi_set_opmode(STATION_MODE);
+
+	struct station_config wifi_config;
+
+	memset(&wifi_config, 0, sizeof(wifi_config));
+	strcpy((char*)wifi_config.ssid, WIFI_SSID);
+	strcpy((char*)wifi_config.password, WIFI_ENTERPRISE_PASSWORD);
+
+	wifi_station_set_config(&wifi_config);
+	// wifi_set_macaddr(STATION_IF,target_esp_mac);
+
+	wifi_station_set_wpa2_enterprise_auth(1);
+
+	// Clean up to be sure no old data is still inside
+	wifi_station_clear_cert_key();
+	wifi_station_clear_enterprise_ca_cert();
+	wifi_station_clear_enterprise_identity();
+	wifi_station_clear_enterprise_username();
+	wifi_station_clear_enterprise_password();
+	wifi_station_clear_enterprise_new_password();
+
+	wifi_station_set_enterprise_identity((uint8*)WIFI_ENTERPRISE_USERNAME, strlen(WIFI_ENTERPRISE_USERNAME));
+	wifi_station_set_enterprise_username((uint8*)WIFI_ENTERPRISE_USERNAME, strlen(WIFI_ENTERPRISE_USERNAME));
+	wifi_station_set_enterprise_password((uint8*)WIFI_ENTERPRISE_PASSWORD, strlen((char*)WIFI_ENTERPRISE_PASSWORD));
+
+
+	wifi_station_connect();
+	#endif
+}
+
+
 float read_analog(int channel) {
 	
 	const char* bin = std::bitset<8>(channel).to_string().c_str();
@@ -96,7 +142,8 @@ void setup() {
 	// https://gist.github.com/Matheus-Garbelini/2cd780aed2eddbe17eb4adb5eca42bd6
 	// TODO Add support for enterprise WiFi here so we can connect to eduroam
 	Serial.print("WIFI: ");
-	WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
+	
+	connect_wifi();
 	
 	int attempts = 0;
 	while (WiFi.status() != WL_CONNECTED) {

autoplant/settings.h.example

@@ -13,7 +13,7 @@
 // The port to connect to.
 // 1883 = unencrypted, 8883 = encrypted
 // Connections are encrypted by default. There isn't currently a way to disable it.
-#define MQTT_PORT		"8883"
+#define MQTT_PORT		8883
 // The username to authenticate with when connecting to the MQTT server.
 #define MQTT_USERNAME	"autoplant"
 // The password to authenticate with when connecting to the MQTT server.