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#include <FS.h> //this needs to be first, or it all crashes and burns... | |
#include <ESP8266WiFi.h> //https://github.com/esp8266/Arduino | |
//needed for library | |
#include <DNSServer.h> | |
#include <ESP8266WebServer.h> | |
#include <WiFiManager.h> //https://github.com/tzapu/WiFiManager | |
#include <ArduinoJson.h> //https://github.com/bblanchon/ArduinoJson | |
#include <BlynkSimpleEsp8266.h> | |
//define your default values here, if there are different values in config.json, they are overwritten. | |
char blynk_token[33] = "YOUR_BLYNK_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); | |
DynamicJsonBuffer jsonBuffer; | |
JsonObject& json = jsonBuffer.parseObject(buf.get()); | |
json.printTo(Serial); | |
if (json.success()) { | |
Serial.println("\nparsed json"); | |
strcpy(blynk_token, json["blynk_token"]); | |
} else { | |
Serial.println("failed to load json config"); | |
} | |
} | |
} | |
} 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_blynk_token("blynk", "blynk token", blynk_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); | |
//add all your parameters here | |
wifiManager.addParameter(&custom_blynk_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("BlynkNode", "password")) { | |
Serial.println("failed to connect and hit timeout"); | |
delay(3000); | |
//reset and try again, or maybe put it to deep sleep | |
ESP.reset(); | |
delay(5000); | |
} | |
//if you get here you have connected to the WiFi | |
Serial.println("connected...yeey :)"); | |
//read updated parameters | |
strcpy(blynk_token, custom_blynk_token.getValue()); | |
//save the custom parameters to FS | |
if (shouldSaveConfig) { | |
Serial.println("saving config"); | |
DynamicJsonBuffer jsonBuffer; | |
JsonObject& json = jsonBuffer.createObject(); | |
json["blynk_token"] = blynk_token; | |
File configFile = SPIFFS.open("/config.json", "w"); | |
if (!configFile) { | |
Serial.println("failed to open config file for writing"); | |
} | |
json.printTo(Serial); | |
json.printTo(configFile); | |
configFile.close(); | |
//end save | |
} | |
Blynk.config(blynk_token); | |
} | |
void loop() { | |
// put your main code here, to run repeatedly: | |
Blynk.run(); | |
} | |
boolean lit = false; | |
//REFRESH BUTTON v3 | |
BLYNK_WRITE(3) { | |
lit = !lit; | |
//LED on V1 | |
Blynk.virtualWrite(1, lit * 255); | |
Serial.println("refresh"); | |
} |
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