diff --git a/.gitignore b/.gitignore
index 759b739..775e4b3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,4 @@ my*.h
 compile_commands.json
 newcode.txt.old
 UserAddin.txt
+platformio.ini
diff --git a/IO_I2CDFPlayer.h b/IO_I2CDFPlayer.h
index c291b56..466ce3e 100644
--- a/IO_I2CDFPlayer.h
+++ b/IO_I2CDFPlayer.h
@@ -511,6 +511,7 @@ public:
       if (pin == 0) { // Do nothing if not vPin 0
         return _playing;
       }
+      return _playing; // fix for compile error: "control reaches end of non-void function [-Wreturn-type]"
     }
 
   void _display() override {
@@ -549,8 +550,8 @@ private:
     setChecksum(out);
 
       // Prepend the DFPlayer command with REG address and UART Channel in _outbuffer
-      _outbuffer[0] = REG_THR << 3 | _UART_CH << 1; //TX FIFO and UART Channel      
-      for ( int i = 1; i < sizeof(out)+1 ; i++){
+      _outbuffer[0] = REG_THR << 3 | _UART_CH << 1; //TX FIFO and UART Channel            
+      for ( uint8_t i = 1; i < sizeof(out)+1 ; i++){
         _outbuffer[i] = out[i-1];
       }
 
@@ -616,6 +617,14 @@ private:
     uint16_t _divisor = (_sc16is752_xtal_freq/PRESCALER)/(BAUD_RATE * 16);  // Calculate _divisor for baudrate
     TEMP_REG_VAL = 0x08; // UART Software reset
     UART_WriteRegister(REG_IOCONTROL, TEMP_REG_VAL);
+
+    // Extra delay when using low frequency xtal after soft reset
+    // Test when using 1.8432 Mhz xtal
+    if(_sc16is752_xtal_freq == SC16IS752_XTAL_FREQ_LOW){
+      _timeoutTime = micros() + 10000UL;  // 10mS timeout      
+      _awaitingResponse = true;
+    }
+
     TEMP_REG_VAL = 0x00; // Set pins to GPIO mode
     UART_WriteRegister(REG_IOCONTROL, TEMP_REG_VAL);
     TEMP_REG_VAL = 0xFF; //Set all pins as output
diff --git a/platformio.ini b/platformio.ini
index 1ea33de..9797748 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -11,11 +11,11 @@
 [platformio]
 default_envs = 
 	mega2560
-	uno
-	nano
-	ESP32
-	Nucleo-F411RE
-	Nucleo-F446RE
+;	uno
+;	nano
+;	ESP32
+;	Nucleo-F411RE
+;	Nucleo-F446RE
 src_dir = .
 include_dir = .
 
diff --git a/version.h b/version.h
index 36c1338..8fd1185 100644
--- a/version.h
+++ b/version.h
@@ -6,6 +6,8 @@
 #define VERSION "5.5.8"
 // 5.5.8  - EXSensorCam clean up to match other filters and
 //        - avoid need for config.h settings
+//        - Test: IO_I2CDFPlayer.h inserted 10mS deleay in Init_SC16IS752() just after soft-reset for board with 1.8432 Mhz xtal
+//        - IO_I2CDFPlayer.h: fixed 2 compiler errors as the compilers are getting stricter
 // 5.5.7  - ESP32 bugfix packet buffer race (as 5.4.1)
 // 5.5.6  - Fix ESP32 build bug caused by include reference loop
 // 5.5.5  - Railcom implementation with IO_I2CRailcom driver