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diff --git a/src/tusb_option.h b/src/tusb_option.h
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+/**************************************************************************/

+/*!

+    @file     tusb_option.h

+    @author   hathach (tinyusb.org)

+

+    @section LICENSE

+

+    Software License Agreement (BSD License)

+

+    Copyright (c) 2013, hathach (tinyusb.org)

+    All rights reserved.

+

+    Redistribution and use in source and binary forms, with or without

+    modification, are permitted provided that the following conditions are met:

+    1. Redistributions of source code must retain the above copyright

+    notice, this list of conditions and the following disclaimer.

+    2. Redistributions in binary form must reproduce the above copyright

+    notice, this list of conditions and the following disclaimer in the

+    documentation and/or other materials provided with the distribution.

+    3. Neither the name of the copyright holders nor the

+    names of its contributors may be used to endorse or promote products

+    derived from this software without specific prior written permission.

+

+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY

+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

+    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

+    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY

+    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

+    INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

+    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION HOWEVER CAUSED AND

+    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

+    INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS

+    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+

+    This file is part of the tinyusb stack.

+*/

+/**************************************************************************/

+

+#ifndef _TUSB_OPTION_H_

+#define _TUSB_OPTION_H_

+

+#define TUSB_VERSION_YEAR   00

+#define TUSB_VERSION_MONTH  00

+#define TUSB_VERSION_WEEK   0

+#define TUSB_VERSION_NAME   "alpha"

+#define TUSB_VERSION        XSTRING_(TUSB_VERSION_YEAR) "." XSTRING_(TUSB_VERSION_MONTH)

+

+/** \defgroup group_mcu Supported MCU

+ * \ref CFG_TUSB_MCU must be defined to one of these

+ *  @{ */

+#define OPT_MCU_LPC11UXX       1 ///< NXP LPC11Uxx series

+#define OPT_MCU_LPC13XX        2 ///< NXP LPC13xx (not supported yet)

+#define OPT_MCU_LPC13UXX       3 ///< NXP LPC13xx 12 bit ADC series

+#define OPT_MCU_LPC175X_6X     4 ///< NXP LPC175x, LPC176x series

+#define OPT_MCU_LPC177X_8X     5 ///< NXP LPC177x, LPC178x series (not supported yet)

+#define OPT_MCU_LPC18XX        6 ///< NXP LPC18xx series (not supported yet)

+#define OPT_MCU_LPC43XX        7 ///< NXP LPC43xx series

+

+#define OPT_MCU_NRF5X        100 ///< Nordic nRF5x series

+/** @} */

+

+/** \defgroup group_supported_os Supported RTOS

+ *  \ref CFG_TUSB_OS must be defined to one of these

+ *  @{ */

+#define OPT_OS_NONE       1 ///< No RTOS is used

+#define OPT_OS_FREERTOS   2 ///< FreeRTOS is used

+/** @} */

+

+

+// Allow to use command line to change the config name/location

+#ifndef CFG_TUSB_CONFIG_FILE

+  #define CFG_TUSB_CONFIG_FILE "tusb_config.h"

+#endif

+

+#include CFG_TUSB_CONFIG_FILE

+

+/** \addtogroup group_configuration

+ *  @{ */

+

+//--------------------------------------------------------------------+

+// CONTROLLER

+//--------------------------------------------------------------------+

+/** \defgroup group_mode Controller Mode Selection

+ * \brief CFG_TUSB_CONTROLLER_N_MODE must be defined with these

+ *  @{ */

+#define OPT_MODE_HOST    0x02 ///< Host Mode

+#define OPT_MODE_DEVICE  0x01 ///< Device Mode

+#define OPT_MODE_NONE    0x00 ///< Disabled

+/** @} */

+

+#ifndef CFG_TUSB_RHPORT0_MODE

+  #define CFG_TUSB_RHPORT0_MODE OPT_MODE_NONE

+#endif

+

+#ifndef CFG_TUSB_RHPORT1_MODE

+  #define CFG_TUSB_RHPORT1_MODE OPT_MODE_NONE

+#endif

+

+#define CONTROLLER_HOST_NUMBER (\

+    ((CFG_TUSB_RHPORT0_MODE & OPT_MODE_HOST) ? 1 : 0) + \

+    ((CFG_TUSB_RHPORT1_MODE & OPT_MODE_HOST) ? 1 : 0))

+

+#define CONTROLLER_DEVICE_NUMBER (\

+    ((CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE) ? 1 : 0) + \

+    ((CFG_TUSB_RHPORT1_MODE & OPT_MODE_DEVICE) ? 1 : 0))

+

+#define MODE_HOST_SUPPORTED   (CONTROLLER_HOST_NUMBER > 0)

+#define MODE_DEVICE_SUPPORTED (CONTROLLER_DEVICE_NUMBER > 0)

+

+#if !MODE_HOST_SUPPORTED && !MODE_DEVICE_SUPPORTED

+  #error please configure at least 1 CFG_TUSB_CONTROLLER_N_MODE to OPT_MODE_HOST and/or OPT_MODE_DEVICE

+#endif

+

+//--------------------------------------------------------------------+

+// COMMON OPTIONS

+//--------------------------------------------------------------------+

+/**

+  determines the debug level for the stack

+  - Level 3: TBD

+  - Level 2: TBD

+  - Level 1: Print out if Assert failed. STATIC_VAR is NULL --> accessible when debugging

+  - Level 0: no debug information is generated

+*/

+#ifndef CFG_TUSB_DEBUG

+  #define CFG_TUSB_DEBUG 0

+  #warning CFG_TUSB_DEBUG is not defined, default value is 0

+#endif

+

+#ifndef CFG_TUSB_ATTR_USBRAM

+ #error CFG_TUSB_ATTR_USBRAM is not defined, please help me know how to place data in accessible RAM for usb controller

+#endif

+

+#ifndef CFG_TUSB_OS

+#define CFG_TUSB_OS OPT_OS_NONE

+#endif

+

+

+#ifndef tu_malloc

+#include <stdlib.h>

+#define tu_malloc malloc

+#endif

+

+#ifndef tu_free

+#define tu_free free

+#endif

+

+//--------------------------------------------------------------------+

+// DEVICE OPTIONS

+//--------------------------------------------------------------------+

+#if MODE_DEVICE_SUPPORTED

+

+  #define DEVICE_CLASS_HID ( CFG_TUD_HID_KEYBOARD + CFG_TUD_HID_MOUSE + CFG_TUD_HID_GENERIC )

+

+  #ifndef CFG_TUD_ENDOINT0_SIZE

+    #define CFG_TUD_ENDOINT0_SIZE    64

+  #endif

+

+  #ifndef CFG_TUD_ENUM_BUFFER_SIZE

+    #define CFG_TUD_ENUM_BUFFER_SIZE 256

+  #endif

+

+#endif // MODE_DEVICE_SUPPORTED

+

+//--------------------------------------------------------------------+

+// HOST OPTIONS

+//--------------------------------------------------------------------+

+#if MODE_HOST_SUPPORTED

+  #ifndef CFG_TUSB_HOST_DEVICE_MAX

+    #define CFG_TUSB_HOST_DEVICE_MAX 1

+    #warning CFG_TUSB_HOST_DEVICE_MAX is not defined, default value is 1

+  #endif

+

+  //------------- HUB CLASS -------------//

+  #if CFG_TUSB_HOST_HUB && (CFG_TUSB_HOST_DEVICE_MAX == 1)

+    #error there is no benefit enable hub with max device is 1. Please disable hub or increase CFG_TUSB_HOST_DEVICE_MAX

+  #endif

+

+  //------------- HID CLASS -------------//

+  #define HOST_CLASS_HID   ( CFG_TUSB_HOST_HID_KEYBOARD + CFG_TUSB_HOST_HID_MOUSE + CFG_TUSB_HOST_HID_GENERIC )

+//  #if HOST_CLASS_HID

+//    #define HOST_HCD_XFER_INTERRUPT

+//  #endif

+

+  #ifndef CFG_TUSB_HOST_ENUM_BUFFER_SIZE

+    #define CFG_TUSB_HOST_ENUM_BUFFER_SIZE 256

+  #endif

+

+  //------------- CLASS -------------//

+#endif // MODE_HOST_SUPPORTED

+

+

+/*------------------------------------------------------------------*/

+/* Config Verification

+ *------------------------------------------------------------------*/

+

+#if (CFG_TUSB_OS != OPT_OS_NONE) && !defined (CFG_TUD_TASK_PRIO)

+  #error CFG_TUD_TASK_PRIO need to be defined (hint: use the highest if possible)

+#endif

+

+#if CFG_TUD_ENDOINT0_SIZE > 64

+  #error Control Endpoint Max Package Size cannot larger than 64

+#endif

+

+#if CFG_TUD_MSC_MAXLUN == 0 || CFG_TUD_MSC_MAXLUN > 16

+  #error MSC Device: Incorrect setting of MAX LUN

+#endif

+

+//#if CFG_TUD_MSC_BUFSIZE

+

+

+#endif /* _TUSB_OPTION_H_ */

+

+/** @} */