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Remember selected file after power loss

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Gabriel Augendre 2023-01-04 11:02:19 +01:00
parent 70f47e8668
commit aed9942c02
1 changed files with 22 additions and 12 deletions
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34
src/main.cpp
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@ -7,6 +7,7 @@
#include <Wire.h> #include <Wire.h>
#include <Adafruit_GFX.h> #include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h> #include <Adafruit_SSD1306.h>
#include <Preferences.h>
// Toggle on to switch to AP mode. // Toggle on to switch to AP mode.
// Leave commented for wifi station mode. // Leave commented for wifi station mode.
@ -50,6 +51,7 @@ String selectedFile = "";
AsyncWebServer server(80); AsyncWebServer server(80);
Audio audio; Audio audio;
Preferences preferences;
byte buttonLastState = HIGH; byte buttonLastState = HIGH;
byte currentVolume = 12; byte currentVolume = 12;
@ -123,6 +125,7 @@ void onSelectFile(AsyncWebServerRequest *request)
if (request->hasParam("fileName", true)) if (request->hasParam("fileName", true))
{ {
selectedFile = request->getParam("fileName", true)->value(); selectedFile = request->getParam("fileName", true)->value();
preferences.putString("selectedFile", selectedFile);
Serial.print(selectedFile); Serial.print(selectedFile);
displayText("Selectionne : " + selectedFile); displayText("Selectionne : " + selectedFile);
} }
@ -160,6 +163,8 @@ void setup()
pinMode(LED, OUTPUT); pinMode(LED, OUTPUT);
digitalWrite(LED, LOW); digitalWrite(LED, LOW);
preferences.begin("buzzer", false);
// Screen // Screen
if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS))
{ {
@ -197,21 +202,26 @@ void setup()
return; return;
} }
File root = SD.open("/"); selectedFile = preferences.getString("selectedFile", "");
File file = root.openNextFile(); if (selectedFile == "" || !fileIsValid(selectedFile))
while (file)
{ {
String fileName = file.name(); File root = SD.open("/");
if (fileIsValid(fileName)) File file = root.openNextFile();
while (file)
{ {
selectedFile = fileName; String fileName = file.name();
Serial.println("Selected " + fileName); if (fileIsValid(fileName))
display.println("Selectionne : " + fileName); {
display.display(); selectedFile = fileName;
break; Serial.println("Selected " + fileName);
display.println("Selectionne : " + fileName);
display.display();
break;
}
file.close();
file = root.openNextFile();
} }
file.close(); root.close();
file = root.openNextFile();
} }
display.clearDisplay(); display.clearDisplay();