max80_fw/esp32/max80/wifi.cpp

#include "Arduino.h"
#include "ArduinoOTA.h"
#include "WiFi.h"
#include "wifi.h"
#include "storage.h"
#include "httpd.h"

String ssid        = "";
String password    = "";
String otaPassword = "";
String hostname    = "max80";

bool inOTA = false;

static void start_services(void)
{
    my_httpd_start();
}

static String wifi_local_ip(void)
{
    return WiFi.localIP().toString();
}

static void WiFiEvent(WiFiEvent_t event, WiFiEventInfo_t info)
{
    bool retry = false;
    bool connected = false;

    switch (event) {
    case ARDUINO_EVENT_WIFI_READY:
	printf("[WIFI] Interface ready\n");
	break;
    case ARDUINO_EVENT_WIFI_SCAN_DONE:
	printf("[WIFI] Completed scan for access points\n");
	break;
    case ARDUINO_EVENT_WIFI_STA_START:
	printf("[WIFI] Client started\n");
	break;
    case ARDUINO_EVENT_WIFI_STA_STOP:
	printf("[WIFI] Clients stopped\n");
	break;
    case ARDUINO_EVENT_WIFI_STA_CONNECTED:
	printf("[WIFI] Connected to access point\n");
	break;
    case ARDUINO_EVENT_WIFI_STA_DISCONNECTED:
	printf("[WIFI] Disconnected from WiFi access point\n");
	retry = true;
	break;
    case ARDUINO_EVENT_WIFI_STA_AUTHMODE_CHANGE:
	printf("[WIFI] Authentication mode of access point has changed\n");
	break;
    case ARDUINO_EVENT_WIFI_STA_GOT_IP:
	printf("[WIFI] Obtained IP address: %s\n", wifi_local_ip().c_str());
	connected = true;
	break;
    case ARDUINO_EVENT_WIFI_STA_LOST_IP:
	printf("[WIFI] Lost IP address and IP address is reset to 0\n");
	retry = true;
	break;
    case ARDUINO_EVENT_WPS_ER_SUCCESS:
	printf("[WIFI] WiFi Protected Setup (WPS): succeeded in enrollee mode\n");
	break;
    case ARDUINO_EVENT_WPS_ER_FAILED:
	printf("[WIFI] WiFi Protected Setup (WPS): failed in enrollee mode\n");
	break;
    case ARDUINO_EVENT_WPS_ER_TIMEOUT:
	printf("[WIFI] WiFi Protected Setup (WPS): timeout in enrollee mode\n");
	break;
    case ARDUINO_EVENT_WPS_ER_PIN:
	printf("[WIFI] WiFi Protected Setup (WPS): pin code in enrollee mode\n");
	break;
    case ARDUINO_EVENT_WIFI_AP_START:
	printf("[WIFI] Access point started\n");
	break;
    case ARDUINO_EVENT_WIFI_AP_STOP:
	printf("[WIFI] Access point stopped\n");
	break;
    case ARDUINO_EVENT_WIFI_AP_STACONNECTED:
	printf("[WIFI] Client connected\n");
	break;
    case ARDUINO_EVENT_WIFI_AP_STADISCONNECTED:
	printf("[WIFI] Client disconnected\n");
	break;
    case ARDUINO_EVENT_WIFI_AP_STAIPASSIGNED:
	printf("[WIFI] Assigned IP address to client\n");
	break;
    case ARDUINO_EVENT_WIFI_AP_PROBEREQRECVED:
	printf("[WIFI] Received probe request\n");
	break;
    case ARDUINO_EVENT_WIFI_AP_GOT_IP6:
	printf("[WIFI] AP IPv6 is preferred\n");
	break;
    case ARDUINO_EVENT_WIFI_STA_GOT_IP6:
	printf("[WIFI] STA IPv6 is preferred\n");
	connected = true;
	break;
    case ARDUINO_EVENT_ETH_GOT_IP6:
	printf("[ETH] Ethernet IPv6 is preferred\n");
	connected = true;
	break;
    case ARDUINO_EVENT_ETH_START:
	printf("[ETH] Ethernet started\n");
	break;
    case ARDUINO_EVENT_ETH_STOP:
	printf("[ETH] Ethernet stopped\n");
	break;
    case ARDUINO_EVENT_ETH_CONNECTED:
	printf("[ETH] Ethernet connected\n");
	break;
    case ARDUINO_EVENT_ETH_DISCONNECTED:
	printf("[ETH] Ethernet disconnected\n");
	retry = true;
	break;
    case ARDUINO_EVENT_ETH_GOT_IP:
	printf("[ETH] Obtained IP address: %s\n", wifi_local_ip().c_str());
	connected = true;
	break;
    default:
	break;
    }

    /* Maybe need to do these in a different thread? */

    if (connected) {
	start_services();
    }

    if (retry) {
	WiFi.disconnect();
	WiFi.begin();
    }
}

void SetupWiFi() {
    ssid = GetWifiSSID();
    password = GetWifiPassword();
    hostname = GetHostname();
    inOTA = false;

    printf("[INFO] Setting up WiFi\n");
    printf("[INFO] SSID: %s\n", ssid.c_str());

    WiFi.onEvent(WiFiEvent);

    if (WiFi.getMode() != WIFI_STA) {
	WiFi.mode(WIFI_STA);
	delay(10);
    }

    if (WiFi.SSID() != ssid || WiFi.psk() != password) {
	printf("[INFO] WiFi config changed.\n");
	// ... Try to connect to WiFi station.
	WiFi.begin(ssid.c_str(), password.c_str());
    } else {
	WiFi.begin();
    }

    WiFi.setAutoReconnect(true);
    WiFi.setHostname(hostname.c_str());
}

void SetupOTA() {
    // Start OTA server.
    ArduinoOTA.setHostname((const char *)hostname.c_str());

    ArduinoOTA.onStart([]() {
	    inOTA = true;
	    printf("[INFO] OTA Update Start\n");
	});

    ArduinoOTA.onEnd([]() {
	    printf("[INFO] OTA Update End\n");
	});

    ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
	    printf("[INFO] Progress: %u%%\n", (unsigned int)((progress*100ULL)/total));
	});

    ArduinoOTA.onError([](ota_error_t error) {
	    printf("[ERROR] %u: ", error);
	    if (error == OTA_AUTH_ERROR) printf("Auth failed\n");
	    else if (error == OTA_BEGIN_ERROR) printf("Start Failed\n");
	    else if (error == OTA_CONNECT_ERROR) printf("Connection failed\n");
	    else if (error == OTA_RECEIVE_ERROR) printf("Receive Error\n");
	    else if (error == OTA_END_ERROR) printf("End Fail\n");
	});

    ArduinoOTA.begin();
}