diff --git a/Readme.md b/Readme.md
index 0bf9476..7dd5897 100644
--- a/Readme.md
+++ b/Readme.md
@@ -1,5 +1,8 @@
 # Arduino Joystick With Force Feedback Library
 
+
+Fix DinamicHID for compile with Arduino DUE.
+
 ## Statement
 
 ### This is a joy library for Atmega32UX chip with force feedback, which can be used to make game handle with vibration, game steering wheel with force feedback, etc.Multi-axis-force-feedback feature is added.
diff --git a/src/DynamicHID/DynamicHID.cpp b/src/DynamicHID/DynamicHID.cpp
index e052da0..d5bb0c3 100644
--- a/src/DynamicHID/DynamicHID.cpp
+++ b/src/DynamicHID/DynamicHID.cpp
@@ -20,12 +20,16 @@
  */
 
 #include "DynamicHID.h"
+#include "Arduino.h"
 
 #if defined(USBCON)
 
 #ifdef _VARIANT_ARDUINO_DUE_X_
 #define USB_SendControl USBD_SendControl
 #define USB_Send USBD_Send
+#define USB_Recv USBD_Recv
+#define USB_RecvControl USBD_RecvControl
+#define USB_Available USBD_Available
 #endif
 
 DynamicHID_& DynamicHID()
@@ -111,7 +115,7 @@ int DynamicHID_::RecvData(byte* data)
 {
 	int count = 0;
 	while (usb_Available()) {
-		data[count++] = (byte)USB_Recv(PID_ENDPOINT_OUT);
+		data[count++] = USB_Recv(PID_ENDPOINT_OUT);
 	}
 	return count;
 }
@@ -141,7 +145,8 @@ bool DynamicHID_::GetReport(USBSetup& setup) {
 	if (report_type == DYNAMIC_HID_REPORT_TYPE_FEATURE) {
 		if ((report_id == 6))// && (gNewEffectBlockLoad.reportId==6))
 		{
-			_delay_us(500);
+			//_delay_us(500);
+			delayMicroseconds(500);
 			USB_SendControl(TRANSFER_RELEASE, pidReportHandler.getPIDBlockLoad(), sizeof(USB_FFBReport_PIDBlockLoad_Feature_Data_t));
 			pidReportHandler.pidBlockLoad.reportId = 0;
 			return (true);
@@ -189,6 +194,7 @@ bool DynamicHID_::SetReport(USBSetup& setup) {
 		  return true;
 		  }*/
 	}
+	return (false);
 }
 
 bool DynamicHID_::setup(USBSetup& setup)
@@ -237,6 +243,7 @@ bool DynamicHID_::setup(USBSetup& setup)
 	return false;
 }
 
+
 DynamicHID_::DynamicHID_(void) : PluggableUSBModule(PID_ENPOINT_COUNT, 1, epType),
                    rootNode(NULL), descriptorSize(0),
                    protocol(DYNAMIC_HID_REPORT_PROTOCOL), idle(1)
@@ -246,6 +253,7 @@ DynamicHID_::DynamicHID_(void) : PluggableUSBModule(PID_ENPOINT_COUNT, 1, epType
 	PluggableUSB().plug(this);
 }
 
+
 int DynamicHID_::begin(void)
 {
 	return 0;
diff --git a/src/DynamicHID/DynamicHID.h b/src/DynamicHID/DynamicHID.h
index 4f373f8..a9230dc 100644
--- a/src/DynamicHID/DynamicHID.h
+++ b/src/DynamicHID/DynamicHID.h
@@ -107,8 +107,8 @@ class DynamicHIDSubDescriptor {
   DynamicHIDSubDescriptor(const void *d, const uint16_t l, const void* pid_d, const uint16_t pid_l, const bool ipm = true) : data(d), length(l),pid_data(pid_d), pid_length(pid_l), inProgMem(ipm) { }
 
   const void* data;
-  const void* pid_data;
   const uint16_t length;
+  const void* pid_data;
   const uint16_t pid_length;
   const bool inProgMem;
 };
@@ -135,7 +135,11 @@ class DynamicHID_ : public PluggableUSBModule
   uint8_t getShortName(char* name);
 
 private:
-  uint8_t epType[2];
+  #ifdef _VARIANT_ARDUINO_DUE_X_
+      uint32_t epType[2];
+  #else
+      uint8_t epType[2];
+  #endif
 
   DynamicHIDSubDescriptor* rootNode;
   uint16_t descriptorSize;
diff --git a/src/Joystick.cpp b/src/Joystick.cpp
index 0e30657..efe0810 100644
--- a/src/Joystick.cpp
+++ b/src/Joystick.cpp
@@ -560,7 +560,7 @@ int32_t Joystick_::getEffectForce(volatile TEffectState& effect,Gains _gains,Eff
 void Joystick_::forceCalculator(int32_t* forces) {
     forces[0] = 0;
     forces[1] = 0;
-        int32_t force = 0;
+        //int32_t force = 0;
 	    for (int id = 0; id < MAX_EFFECTS; id++) {
 	    	volatile TEffectState& effect = DynamicHID().pidReportHandler.g_EffectStates[id];
 	    	if ((effect.state == MEFFECTSTATE_PLAYING) &&
diff --git a/src/Joystick.h b/src/Joystick.h
index 9aced73..9e28ac1 100644
--- a/src/Joystick.h
+++ b/src/Joystick.h
@@ -58,9 +58,15 @@
 #define DIRECTION_ENABLE                   0x04
 #define X_AXIS_ENABLE                      0x01
 #define Y_AXIS_ENABLE                      0x02
+
+#ifndef FFB_AXIS_COUNT
 #define FFB_AXIS_COUNT                     0x02
+#endif
+
 #define FORCE_FEEDBACK_MAXGAIN              100
+#ifndef DEG_TO_RAD
 #define DEG_TO_RAD              ((float)((float)3.14159265359 / 180.0))
+#endif
 
 struct Gains{
     uint8_t totalGain         = FORCE_FEEDBACK_MAXGAIN;