Adding some delays/stuff to avoid ugly noises when powering off/on

src/AudioPlayer.cpp

@@ -168,9 +168,15 @@ void AudioPlayer_SetupVolume(void) {
             #endif
 
             #ifdef GPIO_PA_EN
+                while (millis() < 500) {
+                    delay(10);  // Wait a bit in order to avoid ugly noises when enabling amp
+                }
                 Port_Write(GPIO_PA_EN, true, true);
             #endif
             #ifdef GPIO_HP_EN
+                while (millis() < 500) {
+                    delay(10);  // Wait a bit in order to avoid ugly noises when enabling amp
+                }
                 Port_Write(GPIO_HP_EN, false, true);
             #endif
         } else {

src/System.cpp

@@ -7,6 +7,7 @@
 #include "Log.h"
 #include "Mqtt.h"
 #include "SdCard.h"
+#include "Port.h"
 
 constexpr const char prefsRfidNamespace[] PROGMEM = "rfidTags";     // Namespace used to save IDs of rfid-tags
 constexpr const char prefsSettingsNamespace[] PROGMEM = "settings"; // Namespace used for generic settings
@@ -186,6 +187,14 @@ void System_DeepSleepManager(void) {
             return;
         }
 
+        // Disable amps in order to avoid ugly noises when powering off
+        #ifdef GPIO_PA_EN
+            Port_Write(GPIO_PA_EN, false);
+        #endif
+        #ifdef GPIO_HP_EN
+            Port_Write(GPIO_HP_EN, false);
+        #endif
+
         System_Sleeping = true;
         Log_Println((char *) FPSTR(goToSleepNow), LOGLEVEL_NOTICE);