/*
 * hal.h
 *
 *  Created on: Dec 2, 2012
 *      Author: hathach
 */

/*
 * Software License Agreement (BSD License)
 * Copyright (c) 2013, hathach (tinyusb.net)
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 tiny usb stack.
 */

/** \file
 *  \brief TBD
 *
 *  \note TBD
 */

/** 
 *  \defgroup Group_HAL Hardware Abtract Layer
 *  \brief Hardware dependent layer
 *
 *  @{
 */

#ifndef _TUSB_HAL_H_
#define _TUSB_HAL_H_

#include "tusb_option.h"
#include "common/errors.h"
#include "common/compiler/compiler.h"

#if MCU == 0
  #error MCU is not defined or supported
#elif MCU == MCU_LPC11UXX
  #include "hal_lpc11uxx.h"
#elif MCU == MCU_LPC13UXX
  #include "hal_lpc13uxx.h"
#elif MCU == MCU_LPC43XX
  #include "hal_lpc43xx.h"
#endif

#ifdef __cplusplus
extern "C" {
#endif

// callback from tusb.h
extern void tusb_isr(uint8_t controller_id);


/** \brief USB hardware init
 *
 * \param[in]  para1
 * \param[out] para2
 * \return Error Code of the \ref TUSB_ERROR enum
 * \note
 */
tusb_error_t hal_init();

/**
 * Enable USB Interrupt
 */
static inline void hal_interrupt_enable() ATTR_ALWAYS_INLINE;

/**
 * Disable USB Interrupt
 */
static inline void hal_interrupt_disable() ATTR_ALWAYS_INLINE;

static inline bool hal_debugger_is_attached() ATTR_PURE ATTR_ALWAYS_INLINE;
static inline bool hal_debugger_is_attached()
{
#ifndef _TEST_
  return (CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk) == CoreDebug_DHCSR_C_DEBUGEN_Msk;
#else
  return false;
#endif
}

static inline void hal_debugger_breakpoint() ATTR_ALWAYS_INLINE;
static inline void hal_debugger_breakpoint()
{
#ifndef _TEST_
  if (hal_debugger_is_attached()) /* if there is debugger connected */
  {
    __asm("BKPT #0\n");
  }
#endif
}

#ifdef __cplusplus
 }
#endif

#endif /* _TUSB_HAL_H_ */

/** @} */