weatherstation/firmware/libraries/WiFiManager/examples/Parameters/SPIFFS/AutoConnectWithFSParameters/AutoConnectWithFSParameters.ino
2022-09-15 10:23:02 +02:00

169 lines
5.4 KiB
C++

#include <FS.h> //this needs to be first, or it all crashes and burns...
#include <WiFiManager.h> //https://github.com/tzapu/WiFiManager
#ifdef ESP32
#include <SPIFFS.h>
#endif
#include <ArduinoJson.h> //https://github.com/bblanchon/ArduinoJson
//define your default values here, if there are different values in config.json, they are overwritten.
char mqtt_server[40];
char mqtt_port[6] = "8080";
char api_token[34] = "YOUR_API_TOKEN";
//flag for saving data
bool shouldSaveConfig = false;
//callback notifying us of the need to save config
void saveConfigCallback () {
Serial.println("Should save config");
shouldSaveConfig = true;
}
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
Serial.println();
//clean FS, for testing
//SPIFFS.format();
//read configuration from FS json
Serial.println("mounting FS...");
if (SPIFFS.begin()) {
Serial.println("mounted file system");
if (SPIFFS.exists("/config.json")) {
//file exists, reading and loading
Serial.println("reading config file");
File configFile = SPIFFS.open("/config.json", "r");
if (configFile) {
Serial.println("opened config file");
size_t size = configFile.size();
// Allocate a buffer to store contents of the file.
std::unique_ptr<char[]> buf(new char[size]);
configFile.readBytes(buf.get(), size);
#if defined(ARDUINOJSON_VERSION_MAJOR) && ARDUINOJSON_VERSION_MAJOR >= 6
DynamicJsonDocument json(1024);
auto deserializeError = deserializeJson(json, buf.get());
serializeJson(json, Serial);
if ( ! deserializeError ) {
#else
DynamicJsonBuffer jsonBuffer;
JsonObject& json = jsonBuffer.parseObject(buf.get());
json.printTo(Serial);
if (json.success()) {
#endif
Serial.println("\nparsed json");
strcpy(mqtt_server, json["mqtt_server"]);
strcpy(mqtt_port, json["mqtt_port"]);
strcpy(api_token, json["api_token"]);
} else {
Serial.println("failed to load json config");
}
configFile.close();
}
}
} else {
Serial.println("failed to mount FS");
}
//end read
// The extra parameters to be configured (can be either global or just in the setup)
// After connecting, parameter.getValue() will get you the configured value
// id/name placeholder/prompt default length
WiFiManagerParameter custom_mqtt_server("server", "mqtt server", mqtt_server, 40);
WiFiManagerParameter custom_mqtt_port("port", "mqtt port", mqtt_port, 6);
WiFiManagerParameter custom_api_token("apikey", "API token", api_token, 32);
//WiFiManager
//Local intialization. Once its business is done, there is no need to keep it around
WiFiManager wifiManager;
//set config save notify callback
wifiManager.setSaveConfigCallback(saveConfigCallback);
//set static ip
wifiManager.setSTAStaticIPConfig(IPAddress(10, 0, 1, 99), IPAddress(10, 0, 1, 1), IPAddress(255, 255, 255, 0));
//add all your parameters here
wifiManager.addParameter(&custom_mqtt_server);
wifiManager.addParameter(&custom_mqtt_port);
wifiManager.addParameter(&custom_api_token);
//reset settings - for testing
//wifiManager.resetSettings();
//set minimu quality of signal so it ignores AP's under that quality
//defaults to 8%
//wifiManager.setMinimumSignalQuality();
//sets timeout until configuration portal gets turned off
//useful to make it all retry or go to sleep
//in seconds
//wifiManager.setTimeout(120);
//fetches ssid and pass and tries to connect
//if it does not connect it starts an access point with the specified name
//here "AutoConnectAP"
//and goes into a blocking loop awaiting configuration
if (!wifiManager.autoConnect("AutoConnectAP", "password")) {
Serial.println("failed to connect and hit timeout");
delay(3000);
//reset and try again, or maybe put it to deep sleep
ESP.restart();
delay(5000);
}
//if you get here you have connected to the WiFi
Serial.println("connected...yeey :)");
//read updated parameters
strcpy(mqtt_server, custom_mqtt_server.getValue());
strcpy(mqtt_port, custom_mqtt_port.getValue());
strcpy(api_token, custom_api_token.getValue());
Serial.println("The values in the file are: ");
Serial.println("\tmqtt_server : " + String(mqtt_server));
Serial.println("\tmqtt_port : " + String(mqtt_port));
Serial.println("\tapi_token : " + String(api_token));
//save the custom parameters to FS
if (shouldSaveConfig) {
Serial.println("saving config");
#if defined(ARDUINOJSON_VERSION_MAJOR) && ARDUINOJSON_VERSION_MAJOR >= 6
DynamicJsonDocument json(1024);
#else
DynamicJsonBuffer jsonBuffer;
JsonObject& json = jsonBuffer.createObject();
#endif
json["mqtt_server"] = mqtt_server;
json["mqtt_port"] = mqtt_port;
json["api_token"] = api_token;
File configFile = SPIFFS.open("/config.json", "w");
if (!configFile) {
Serial.println("failed to open config file for writing");
}
#if defined(ARDUINOJSON_VERSION_MAJOR) && ARDUINOJSON_VERSION_MAJOR >= 6
serializeJson(json, Serial);
serializeJson(json, configFile);
#else
json.printTo(Serial);
json.printTo(configFile);
#endif
configFile.close();
//end save
}
Serial.println("local ip");
Serial.println(WiFi.localIP());
}
void loop() {
// put your main code here, to run repeatedly:
}