nqrEzAmH

1#include <FS.h>                   //this needs to be first, or it all crashes and burns...
2 
3#include <ESP8266WiFi.h>          //https://github.com/esp8266/Arduino
4 
5//needed for library
6#include <DNSServer.h>
7#include <ESP8266WebServer.h>
8#include <WiFiManager.h>          //https://github.com/tzapu/WiFiManager
9 
10#include <ArduinoJson.h>          //https://github.com/bblanchon/ArduinoJson
11 
12#define TRIGGER_PIN 0
13 
14//define your default values here, if there are different values in config.json, they are overwritten.
15 
16char api_key[7] = "TOKEN";
17 
18//flag for saving data
19bool shouldSaveConfig = false;
20 
21//callback notifying us of the need to save config
22void saveConfigCallback () {
23  Serial.println("Should save config");
24  shouldSaveConfig = true;
25}
26 
27void setup() {
28  // put your setup code here, to run once:
29  Serial.begin(115200);
30  Serial.println();
31  pinMode(TRIGGER_PIN, INPUT);
32 
33  if (SPIFFS.begin()) {
34    Serial.println("mounted file system");
35    if (SPIFFS.exists("/config.json")) {
36      //file exists, reading and loading
37      Serial.println("reading config file");
38      File configFile = SPIFFS.open("/config.json", "r");
39      if (configFile) {
40        Serial.println("opened config file");
41        size_t size = configFile.size();
42        // Allocate a buffer to store contents of the file.
43        std::unique_ptr<char[]> buf(new char[size]);
44        configFile.readBytes(buf.get(), size);
45        DynamicJsonBuffer jsonBuffer;
46        JsonObject& json = jsonBuffer.parseObject(buf.get());
47        json.printTo(Serial);
48        if (json.success()) {
49          Serial.println("\nparsed json");
50          strcpy(api_key, json["api_token"]);
51        } else {
52          Serial.println("failed to load json config");
53        }
54        configFile.close();
55      }
56    }
57  } else {
58    Serial.println("failed to mount FS");
59  }
60  
61  WiFi.mode(WIFI_STA);
62  
63  WiFiManagerParameter custom_api_key("key", "api key", api_key, 7);
64  
65  WiFiManager wifiManager;
66  wifiManager.setSaveConfigCallback(saveConfigCallback);
67  wifiManager.addParameter(&custom_api_key);
68 
69  if (!wifiManager.autoConnect("AutoConnectAP", "password")) {
70    Serial.println("failed to connect and hit timeout");
71    delay(3000);
72    //reset and try again, or maybe put it to deep sleep
73    ESP.reset();
74    delay(5000);
75  }
76 
77  //if you get here you have connected to the WiFi
78  Serial.println("connected...yeey :)");
79 
80  //read updated parameters
81  strcpy(api_key, custom_api_key.getValue());
82 
83  //save the custom parameters to FS
84  if (shouldSaveConfig) {
85    Serial.println("saving config");
86    DynamicJsonBuffer jsonBuffer;
87    JsonObject& json = jsonBuffer.createObject();
88 
89    json["api_key"] = api_key;
90 
91    File configFile = SPIFFS.open("/config.json", "w");
92    if (!configFile) {
93      Serial.println("failed to open config file for writing");
94    }
95 
96    json.printTo(Serial);
97    json.printTo(configFile);
98    configFile.close();
99    //end save
100  }
101
102  Serial.println(WiFi.localIP());
103 
104}
105 
106void loop() {
107  if ( digitalRead(TRIGGER_PIN) == LOW ) {
108    WiFi.mode(WIFI_AP_STA);
109    WiFi.softAP("Rsenso");
110    WiFiManager wifiManager;
111   
112    if (!wifiManager.startConfigPortal()) {
113      Serial.println("failed to connect and hit timeout");
114      delay(3000);
115      //reset and try again, or maybe put it to deep sleep
116      ESP.reset();
117      delay(5000);
118  }
119}