158 lines
4.7 KiB
C++
158 lines
4.7 KiB
C++
#include <FS.h> //this needs to be first, or it all crashes and burns...
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#include <ESP8266WiFi.h> //https://github.com/esp8266/Arduino
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//needed for library
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#include <DNSServer.h>
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#include <ESP8266WebServer.h>
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#include <WiFiManager.h> //https://github.com/tzapu/WiFiManager
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#include <ArduinoJson.h> //https://github.com/bblanchon/ArduinoJson
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//define your default values here, if there are different values in config.json, they are overwritten.
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char mqtt_server[40];
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char mqtt_port[6] = "8080";
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char blynk_token[34] = "YOUR_BLYNK_TOKEN";
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//flag for saving data
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bool shouldSaveConfig = false;
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//callback notifying us of the need to save config
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void saveConfigCallback () {
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Serial.println("Should save config");
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shouldSaveConfig = true;
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}
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void setup() {
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// put your setup code here, to run once:
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Serial.begin(115200);
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Serial.println();
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//clean FS, for testing
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//SPIFFS.format();
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//read configuration from FS json
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Serial.println("mounting FS...");
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if (SPIFFS.begin()) {
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Serial.println("mounted file system");
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if (SPIFFS.exists("/config.json")) {
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//file exists, reading and loading
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Serial.println("reading config file");
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File configFile = SPIFFS.open("/config.json", "r");
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if (configFile) {
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Serial.println("opened config file");
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size_t size = configFile.size();
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// Allocate a buffer to store contents of the file.
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std::unique_ptr<char[]> buf(new char[size]);
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configFile.readBytes(buf.get(), size);
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DynamicJsonBuffer jsonBuffer;
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JsonObject& json = jsonBuffer.parseObject(buf.get());
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json.printTo(Serial);
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if (json.success()) {
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Serial.println("\nparsed json");
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strcpy(mqtt_server, json["mqtt_server"]);
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strcpy(mqtt_port, json["mqtt_port"]);
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strcpy(blynk_token, json["blynk_token"]);
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} else {
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Serial.println("failed to load json config");
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}
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configFile.close();
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}
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}
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} else {
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Serial.println("failed to mount FS");
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}
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//end read
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// The extra parameters to be configured (can be either global or just in the setup)
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// After connecting, parameter.getValue() will get you the configured value
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// id/name placeholder/prompt default length
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WiFiManagerParameter custom_mqtt_server("server", "mqtt server", mqtt_server, 40);
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WiFiManagerParameter custom_mqtt_port("port", "mqtt port", mqtt_port, 6);
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WiFiManagerParameter custom_blynk_token("blynk", "blynk token", blynk_token, 32);
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//WiFiManager
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//Local intialization. Once its business is done, there is no need to keep it around
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WiFiManager wifiManager;
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//set config save notify callback
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wifiManager.setSaveConfigCallback(saveConfigCallback);
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//set static ip
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wifiManager.setSTAStaticIPConfig(IPAddress(10,0,1,99), IPAddress(10,0,1,1), IPAddress(255,255,255,0));
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//add all your parameters here
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wifiManager.addParameter(&custom_mqtt_server);
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wifiManager.addParameter(&custom_mqtt_port);
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wifiManager.addParameter(&custom_blynk_token);
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//reset settings - for testing
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//wifiManager.resetSettings();
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//set minimu quality of signal so it ignores AP's under that quality
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//defaults to 8%
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//wifiManager.setMinimumSignalQuality();
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//sets timeout until configuration portal gets turned off
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//useful to make it all retry or go to sleep
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//in seconds
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//wifiManager.setTimeout(120);
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//fetches ssid and pass and tries to connect
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//if it does not connect it starts an access point with the specified name
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//here "AutoConnectAP"
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//and goes into a blocking loop awaiting configuration
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if (!wifiManager.autoConnect("AutoConnectAP", "password")) {
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Serial.println("failed to connect and hit timeout");
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delay(3000);
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//reset and try again, or maybe put it to deep sleep
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ESP.reset();
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delay(5000);
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}
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//if you get here you have connected to the WiFi
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Serial.println("connected...yeey :)");
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//read updated parameters
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strcpy(mqtt_server, custom_mqtt_server.getValue());
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strcpy(mqtt_port, custom_mqtt_port.getValue());
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strcpy(blynk_token, custom_blynk_token.getValue());
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//save the custom parameters to FS
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if (shouldSaveConfig) {
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Serial.println("saving config");
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DynamicJsonBuffer jsonBuffer;
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JsonObject& json = jsonBuffer.createObject();
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json["mqtt_server"] = mqtt_server;
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json["mqtt_port"] = mqtt_port;
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json["blynk_token"] = blynk_token;
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File configFile = SPIFFS.open("/config.json", "w");
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if (!configFile) {
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Serial.println("failed to open config file for writing");
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}
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json.printTo(Serial);
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json.printTo(configFile);
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configFile.close();
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//end save
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}
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Serial.println("local ip");
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Serial.println(WiFi.localIP());
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}
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void loop() {
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// put your main code here, to run repeatedly:
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}
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