weatherstation/firmware/libraries/WiFiManager/examples/Parameters/LittleFS/LittleFSParameters.ino

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2022-09-16 09:20:19 +02:00
/**
* Basic example using LittleFS to store data
*/
#include <Arduino.h>
#include <LittleFS.h>
#include <FS.h>
String readFile(fs::FS &fs, const char * path){
Serial.printf("Reading file: %s\r\n", path);
File file = fs.open(path, "r");
if(!file || file.isDirectory()){
Serial.println("- empty file or failed to open file");
return String();
}
Serial.println("- read from file:");
String fileContent;
while(file.available()){
fileContent+=String((char)file.read());
}
file.close();
Serial.println(fileContent);
return fileContent;
}
void writeFile(fs::FS &fs, const char * path, const char * message){
Serial.printf("Writing file: %s\r\n", path);
File file = fs.open(path, "w");
if(!file){
Serial.println("- failed to open file for writing");
return;
}
if(file.print(message)){
Serial.println("- file written");
} else {
Serial.println("- write failed");
}
file.close();
}
int data = 4;
#include <WiFiManager.h>
#define TRIGGER_PIN 2
int timeout = 120; // seconds to run for
void setup() {
if (!LittleFS.begin()) { //to start littlefs
Serial.println("LittleFS mount failed");
return;
}
data = readFile(LittleFS, "/data.txt").toInt();
WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP
// put your setup code here, to run once:
pinMode(TRIGGER_PIN, INPUT_PULLUP);
WiFiManager wm;
//wm.resetSettings();
bool res;
res = wm.autoConnect("Setup");
if(!res) {
Serial.println("Failed to connect");
// ESP.restart();
}
}
void loop() {
if ( digitalRead(TRIGGER_PIN) == LOW) {
WiFiManager wm;
//wm.resetSettings();
wm.setConfigPortalTimeout(timeout);
if (!wm.startConfigPortal("Sharmander")) {
Serial.println("failed to connect and hit timeout");
delay(3000);
ESP.restart();
delay(5000);
}
Serial.println("connected...yeey :)");
}
}