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/*
             LUFA Library
     Copyright (C) Dean Camera, 2017.

  dean [at] fourwalledcubicle [dot] com
           www.lufa-lib.org
*/

/*
  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  Copyright 2010  Denver Gingerich (denver [at] ossguy [dot] com)

  Permission to use, copy, modify, distribute, and sell this
  software and its documentation for any purpose is hereby granted
  without fee, provided that the above copyright notice appear in
  all copies and that both that the copyright notice and this
  permission notice and warranty disclaimer appear in supporting
  documentation, and that the name of the author not be used in
  advertising or publicity pertaining to distribution of the
  software without specific, written prior permission.

  The author disclaims all warranties with regard to this
  software, including all implied warranties of merchantability
  and fitness.  In no event shall the author be liable for any
  special, indirect or consequential damages or any damages
  whatsoever resulting from loss of use, data or profits, whether
  in an action of contract, negligence or other tortious action,
  arising out of or in connection with the use or performance of
  this software.
*/

#ifndef _KEYBOARD_MOUSE_H_
#define _KEYBOARD_MOUSE_H_

	/* Includes: */
		#include <avr/io.h>
		#include <avr/wdt.h>
		#include <avr/power.h>
		#include <avr/interrupt.h>
		#include <stdbool.h>
		#include <string.h>

		#include "Descriptors.h"

		#include <LUFA/Drivers/USB/USB.h>
		#include <LUFA/Drivers/Board/Joystick.h>
		#include <LUFA/Drivers/Board/LEDs.h>
		#include <LUFA/Drivers/Board/Buttons.h>
		#include <LUFA/Platform/Platform.h>

	/* Macros: */
		/** LED mask for the library LED driver, to indicate that the USB interface is not ready. */
		#define LEDMASK_USB_NOTREADY        LEDS_LED1

		/** LED mask for the library LED driver, to indicate that the USB interface is enumerating. */
		#define LEDMASK_USB_ENUMERATING     (LEDS_LED2 | LEDS_LED3)

		/** LED mask for the library LED driver, to indicate that the USB interface is ready. */
		#define LEDMASK_USB_READY           (LEDS_LED2 | LEDS_LED4)

		/** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */
		#define LEDMASK_USB_ERROR           (LEDS_LED1 | LEDS_LED3)

	/* Function Prototypes: */
		void SetupHardware(void);
		void Keyboard_ProcessLEDReport(const uint8_t LEDStatus);
		void Keyboard_HID_Task(void);
		void Mouse_HID_Task(void);

		void EVENT_USB_Device_Connect(void);
		void EVENT_USB_Device_Disconnect(void);
		void EVENT_USB_Device_ConfigurationChanged(void);
		void EVENT_USB_Device_ControlRequest(void);
		void EVENT_USB_Device_StartOfFrame(void);

#endif
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/*
    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
                 2011 Giovanni Di Sirio.

    This file is part of ChibiOS/RT.

    ChibiOS/RT is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    ChibiOS/RT is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/**
 * @file    spi.c
 * @brief   SPI Driver code.
 *
 * @addtogroup SPI
 * @{
 */

#include "ch.h"
#include "hal.h"

#if HAL_USE_SPI || defined(__DOXYGEN__)

/*===========================================================================*/
/* Driver exported variables.                                                */
/*===========================================================================*/

/*===========================================================================*/
/* Driver local variables.                                                   */
/*===========================================================================*/

/*===========================================================================*/
/* Driver local functions.                                                   */
/*===========================================================================*/

/*===========================================================================*/
/* Driver exported functions.                                                */
/*===========================================================================*/

/**
 * @brief   SPI Driver initialization.
 * @note    This function is implicitly invoked by @p halInit(), there is
 *          no need to explicitly initialize the driver.
 *
 * @init
 */
void spiInit(void) {

  spi_lld_init();
}

/**
 * @brief   Initializes the standard part of a @p SPIDriver structure.
 *
 * @param[out] spip     pointer to the @p SPIDriver object
 *
 * @init
 */
void spiObjectInit(SPIDriver *spip) {

  spip->state = SPI_STOP;
  spip->config = NULL;
#if SPI_USE_WAIT
  spip->thread = NULL;
#endif /* SPI_USE_WAIT */
#if SPI_USE_MUTUAL_EXCLUSION
#if CH_USE_MUTEXES
  chMtxInit(&spip->mutex);
#else
  chSemInit(&spip->semaphore, 1);
#endif
#endif /* SPI_USE_MUTUAL_EXCLUSION */
#if defined(SPI_DRIVER_EXT_INIT_HOOK)
  SPI_DRIVER_EXT_INIT_HOOK(spip);
#endif
}

/**
 * @brief   Configures and activates the SPI peripheral.
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 * @param[in] config    pointer to the @p SPIConfig object
 *
 * @api
 */
void spiStart(SPIDriver *spip, const SPIConfig *config) {

  chDbgCheck((spip != NULL) && (config != NULL), "spiStart");

  chSysLock();
  chDbgAssert((spip->state == SPI_STOP) || (spip->state == SPI_READY),
              "spiStart(), #1", "invalid state");
  spip->config = config;
  spi_lld_start(spip);
  spip->state = SPI_READY;
  chSysUnlock();
}

/**
 * @brief Deactivates the SPI peripheral.
 * @note  Deactivating the peripheral also enforces a release of the slave
 *        select line.
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 *
 * @api
 */
void spiStop(SPIDriver *spip) {

  chDbgCheck(spip != NULL, "spiStop");

  chSysLock();
  chDbgAssert((spip->state == SPI_STOP) || (spip->state == SPI_READY),
              "spiStop(), #1", "invalid state");
  spi_lld_unselect(spip);
  spi_lld_stop(spip);
  spip->state = SPI_STOP;
  chSysUnlock();
}

/**
 * @brief   Asserts the slave select signal and prepares for transfers.
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 *
 * @api
 */
void spiSelect(SPIDriver *spip) {

  chDbgCheck(spip != NULL, "spiSelect");

  chSysLock();
  chDbgAssert(spip->state == SPI_READY, "spiSelect(), #1", "not ready");
  spiSelectI(spip);
  chSysUnlock();
}

/**
 * @brief   Deasserts the slave select signal.
 * @details The previously selected peripheral is unselected.
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 *
 * @api
 */
void spiUnselect(SPIDriver *spip) {

  chDbgCheck(spip != NULL, "spiUnselect");

  chSysLock();
  chDbgAssert(spip->state == SPI_READY, "spiUnselect(), #1", "not ready");
  spiUnselectI(spip);
  chSysUnlock();
}

/**
 * @brief   Ignores data on the SPI bus.
 * @details This asynchronous function starts the transmission of a series of
 *          idle words on the SPI bus and ignores the received data.
 * @pre     A slave must have been selected using @p spiSelect() or
 *          @p spiSelectI().
 * @post    At the end of the operation the configured callback is invoked.
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 * @param[in] n         number of words to be ignored
 *
 * @api
 */
void spiStartIgnore(SPIDriver *spip, size_t n) {

  chDbgCheck((spip != NULL) && (n > 0), "spiStartIgnore");

  chSysLock();
  chDbgAssert(spip->state == SPI_READY, "spiStartIgnore(), #1", "not ready");
  spiStartIgnoreI(spip, n);
  chSysUnlock();
}

/**
 * @brief   Exchanges data on the SPI bus.
 * @details This asynchronous function starts a simultaneous transmit/receive
 *          operation.
 * @pre     A slave must have been selected using @p spiSelect() or
 *          @p spiSelectI().
 * @post    At the end of the operation the configured callback is invoked.
 * @note    The buffers are organized as uint8_t arrays for data sizes below
 *          or equal to 8 bits else it is organized as uint16_t arrays.
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 * @param[in] n         number of words to be exchanged
 * @param[in] txbuf     the pointer to the transmit buffer
 * @param[out] rxbuf    the pointer to the receive buffer
 *
 * @api
 */
void spiStartExchange(SPIDriver *spip, size_t n,
                      const void *txbuf, void *rxbuf) {

  chDbgCheck((spip != NULL) && (n > 0) && (rxbuf != NULL) && (txbuf != NULL),
             "spiStartExchange");

  chSysLock();
  chDbgAssert(spip->state == SPI_READY, "spiStartExchange(), #1", "not ready");
  spiStartExchangeI(spip, n, txbuf, rxbuf);
  chSysUnlock();
}

/**
 * @brief   Sends data over the SPI bus.
 * @details This asynchronous function starts a transmit operation.
 * @pre     A slave must have been selected using @p spiSelect() or
 *          @p spiSelectI().
 * @post    At the end of the operation the configured callback is invoked.
 * @note    The buffers are organized as uint8_t arrays for data sizes below
 *          or equal to 8 bits else it is organized as uint16_t arrays.
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 * @param[in] n         number of words to send
 * @param[in] txbuf     the pointer to the transmit buffer
 *
 * @api
 */
void spiStartSend(SPIDriver *spip, size_t n, const void *txbuf) {

  chDbgCheck((spip != NULL) && (n > 0) && (txbuf != NULL),
             "spiStartSend");

  chSysLock();
  chDbgAssert(spip->state == SPI_READY, "spiStartSend(), #1", "not ready");
  spiStartSendI(spip, n, txbuf);
  chSysUnlock();
}

/**
 * @brief   Receives data from the SPI bus.
 * @details This asynchronous function starts a receive operation.
 * @pre     A slave must have been selected using @p spiSelect() or
 *          @p spiSelectI().
 * @post    At the end of the operation the configured callback is invoked.
 * @note    The buffers are organized as uint8_t arrays for data sizes below
 *          or equal to 8 bits else it is organized as uint16_t arrays.
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 * @param[in] n         number of words to receive
 * @param[out] rxbuf    the pointer to the receive buffer
 *
 * @api
 */
void spiStartReceive(SPIDriver *spip, size_t n, void *rxbuf) {

  chDbgCheck((spip != NULL) && (n > 0) && (rxbuf != NULL),
             "spiStartReceive");

  chSysLock();
  chDbgAssert(spip->state == SPI_READY, "spiStartReceive(), #1", "not ready");
  spiStartReceiveI(spip, n, rxbuf);
  chSysUnlock();
}

#if SPI_USE_WAIT || defined(__DOXYGEN__)
/**
 * @brief   Ignores data on the SPI bus.
 * @details This synchronous function performs the transmission of a series of
 *          idle words on the SPI bus and ignores the received data.
 * @pre     In order to use this function the option @p SPI_USE_WAIT must be
 *          enabled.
 * @pre     In order to use this function the driver must have been configured
 *          without callbacks (@p end_cb = @p NULL).
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 * @param[in] n         number of words to be ignored
 *
 * @api
 */
void spiIgnore(SPIDriver *spip, size_t n) {

  chDbgCheck((spip != NULL) && (n > 0), "spiIgnoreWait");

  chSysLock();
  chDbgAssert(spip->state == SPI_READY, "spiIgnore(), #1", "not ready");
  chDbgAssert(spip->config->end_cb == NULL, "spiIgnore(), #2", "has callback");
  spiStartIgnoreI(spip, n);
  _spi_wait_s(spip);
  chSysUnlock();
}

/**
 * @brief   Exchanges data on the SPI bus.
 * @details This synchronous function performs a simultaneous transmit/receive
 *          operation.
 * @pre     In order to use this function the option @p SPI_USE_WAIT must be
 *          enabled.
 * @pre     In order to use this function the driver must have been configured
 *          without callbacks (@p end_cb = @p NULL).
 * @note    The buffers are organized as uint8_t arrays for data sizes below
 *          or equal to 8 bits else it is organized as uint16_t arrays.
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 * @param[in] n         number of words to be exchanged
 * @param[in] txbuf     the pointer to the transmit buffer
 * @param[out] rxbuf    the pointer to the receive buffer
 *
 * @api
 */
void spiExchange(SPIDriver *spip, size_t n,
                     const void *txbuf, void *rxbuf) {

  chDbgCheck((spip != NULL) && (n > 0) && (rxbuf != NULL) && (txbuf != NULL),
             "spiExchange");

  chSysLock();
  chDbgAssert(spip->state == SPI_READY, "spiExchange(), #1", "not ready");
  chDbgAssert(spip->config->end_cb == NULL,
              "spiExchange(), #2", "has callback");
  spiStartExchangeI(spip, n, txbuf, rxbuf);
  _spi_wait_s(spip);
  chSysUnlock();
}

/**
 * @brief   Sends data over the SPI bus.
 * @details This synchronous function performs a transmit operation.
 * @pre     In order to use this function the option @p SPI_USE_WAIT must be
 *          enabled.
 * @pre     In order to use this function the driver must have been configured
 *          without callbacks (@p end_cb = @p NULL).
 * @note    The buffers are organized as uint8_t arrays for data sizes below
 *          or equal to 8 bits else it is organized as uint16_t arrays.
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 * @param[in] n         number of words to send
 * @param[in] txbuf     the pointer to the transmit buffer
 *
 * @api
 */
void spiSend(SPIDriver *spip, size_t n, const void *txbuf) {

  chDbgCheck((spip != NULL) && (n > 0) && (txbuf != NULL), "spiSend");

  chSysLock();
  chDbgAssert(spip->state == SPI_READY, "spiSend(), #1", "not ready");
  chDbgAssert(spip->config->end_cb == NULL, "spiSend(), #2", "has callback");
  spiStartSendI(spip, n, txbuf);
  _spi_wait_s(spip);
  chSysUnlock();
}

/**
 * @brief   Receives data from the SPI bus.
 * @details This synchronous function performs a receive operation.
 * @pre     In order to use this function the option @p SPI_USE_WAIT must be
 *          enabled.
 * @pre     In order to use this function the driver must have been configured
 *          without callbacks (@p end_cb = @p NULL).
 * @note    The buffers are organized as uint8_t arrays for data sizes below
 *          or equal to 8 bits else it is organized as uint16_t arrays.
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 * @param[in] n         number of words to receive
 * @param[out] rxbuf    the pointer to the receive buffer
 *
 * @api
 */
void spiReceive(SPIDriver *spip, size_t n, void *rxbuf) {

  chDbgCheck((spip != NULL) && (n > 0) && (rxbuf != NULL),
             "spiReceive");

  chSysLock();
  chDbgAssert(spip->state == SPI_READY, "spiReceive(), #1", "not ready");
  chDbgAssert(spip->config->end_cb == NULL,
              "spiReceive(), #2", "has callback");
  spiStartReceiveI(spip, n, rxbuf);
  _spi_wait_s(spip);
  chSysUnlock();
}
#endif /* SPI_USE_WAIT */

#if SPI_USE_MUTUAL_EXCLUSION || defined(__DOXYGEN__)
/**
 * @brief   Gains exclusive access to the SPI bus.
 * @details This function tries to gain ownership to the SPI bus, if the bus
 *          is already being used then the invoking thread is queued.
 * @pre     In order to use this function the option @p SPI_USE_MUTUAL_EXCLUSION
 *          must be enabled.
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 *
 * @api
 */
void spiAcquireBus(SPIDriver *spip) {

  chDbgCheck(spip != NULL, "spiAcquireBus");

#if CH_USE_MUTEXES
  chMtxLock(&spip->mutex);
#elif CH_USE_SEMAPHORES
  chSemWait(&spip->semaphore);
#endif
}

/**
 * @brief   Releases exclusive access to the SPI bus.
 * @pre     In order to use this function the option @p SPI_USE_MUTUAL_EXCLUSION
 *          must be enabled.
 *
 * @param[in] spip      pointer to the @p SPIDriver object
 *
 * @api
 */
void spiReleaseBus(SPIDriver *spip) {

  chDbgCheck(spip != NULL, "spiReleaseBus");

#if CH_USE_MUTEXES
  (void)spip;
  chMtxUnlock();
#elif CH_USE_SEMAPHORES
  chSemSignal(&spip->semaphore);
#endif
}
#endif /* SPI_USE_MUTUAL_EXCLUSION */

#endif /* HAL_USE_SPI */

/** @} */