/* Copyright (c) 2014 Nordic Semiconductor. All Rights Reserved.
 *
 * The information contained herein is property of Nordic Semiconductor ASA.
 * Terms and conditions of usage are described in detail in NORDIC
 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
 *
 * Licensees are granted free, non-transferable use of the information. NO
 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
 * the file.
 *
 */

/**@file
 *
 * @defgroup bsp Board Support Package
 * @{
 * @ingroup app_common
 *
 * @brief BSP module.
 * @details This module provides a layer of abstraction from the board.
 *          It allows the user to indicate certain states on LEDs in a simple way.
 *          Module functionality can be modified by additional defines:
 *          - BSP_SIMPLE reduces functionality of this module to enable 
 *            and read state of the buttons
 *          - BSP_UART_SUPPORT enables support for UART
 */

#ifndef BSP_H__
#define BSP_H__

#include <stdint.h>
#include <stdbool.h>
#include "boards.h"

#if !defined(BSP_DEFINES_ONLY) && !defined(BSP_SIMPLE)
#include "app_button.h"

#define BSP_BUTTON_ACTION_PUSH      (APP_BUTTON_PUSH)    /**< Represents pushing a button. See @ref bsp_button_action_t. */
#define BSP_BUTTON_ACTION_RELEASE   (APP_BUTTON_RELEASE) /**< Represents releasing a button. See @ref bsp_button_action_t. */
#define BSP_BUTTON_ACTION_LONG_PUSH (2)                  /**< Represents pushing and holding a button for @ref BSP_LONG_PUSH_TIMEOUT_MS milliseconds. See also @ref bsp_button_action_t. */
#endif

/* BSP_UART_SUPPORT
 * This define enables UART support module.
 */
#ifdef BSP_UART_SUPPORT
#include "app_uart.h"
#endif // BSP_UART_SUPPORT

#define BUTTON_ERASE_BONDING BSP_BUTTON_0_MASK
#define BUTTON_ERASE_ALL     BSP_BUTTON_1_MASK
#define BUTTON_ADVERTISE     BSP_BUTTON_0_MASK
#define BUTTON_CLEAR_EVT     BSP_BUTTON_1_MASK
#define BUTTON_CAPSLOCK      BSP_BUTTON_2_MASK
#define BSP_BUTTONS_ALL      0xFFFFFFFF
#define BSP_BUTTONS_NONE     0

/**@brief Types of BSP initialization.
 */
#define BSP_INIT_NONE    0        /**< This define specifies the type of initialization without support for LEDs and buttons (@ref bsp_init).*/
#define BSP_INIT_LED     (1 << 0) /**< This bit enables LEDs during initialization (@ref bsp_init).*/
#define BSP_INIT_BUTTONS (1 << 1) /**< This bit enables buttons during initialization (@ref bsp_init).*/

#define BSP_LONG_PUSH_TIMEOUT_MS (1000) /**< The time to hold for a long push (in milliseconds). */

typedef uint8_t bsp_button_action_t; /**< The different actions that can be performed on a button. */

#define BSP_INDICATIONS_LIST {                    \
        "BSP_INDICATE_IDLE\n\r",                  \
        "BSP_INDICATE_SCANNING\n\r",              \
        "BSP_INDICATE_ADVERTISING\n\r",           \
        "BSP_INDICATE_ADVERTISING_WHITELIST\n\r", \
        "BSP_INDICATE_ADVERTISING_SLOW\n\r",      \
        "BSP_INDICATE_ADVERTISING_DIRECTED\n\r",  \
        "BSP_INDICATE_BONDING\n\r",               \
        "BSP_INDICATE_CONNECTED\n\r",             \
        "BSP_INDICATE_SENT_OK\n\r",               \
        "BSP_INDICATE_SEND_ERROR\n\r",            \
        "BSP_INDICATE_RCV_OK\n\r",                \
        "BSP_INDICATE_RCV_ERROR\n\r",             \
        "BSP_INDICATE_FATAL_ERROR\n\r",           \
        "BSP_INDICATE_ALERT_0\n\r",               \
        "BSP_INDICATE_ALERT_1\n\r",               \
        "BSP_INDICATE_ALERT_2\n\r",               \
        "BSP_INDICATE_ALERT_3\n\r",               \
        "BSP_INDICATE_ALERT_OFF\n\r",             \
        "BSP_INDICATE_USER_STATE_OFF\n\r",        \
        "BSP_INDICATE_USER_STATE_0\n\r",          \
        "BSP_INDICATE_USER_STATE_1\n\r",          \
        "BSP_INDICATE_USER_STATE_2\n\r",          \
        "BSP_INDICATE_USER_STATE_3\n\r",          \
        "BSP_INDICATE_USER_STATE_ON\n\r"          \
} /**< See @ref examples_bsp_states for a list of how these states are indicated for the PCA10028/PCA10040 board and the PCA10031 dongle.*/


/**@brief BSP indication states.
 *
 * @details See @ref examples_bsp_states for a list of how these states are indicated for the PCA10028/PCA10040 board and the PCA10031 dongle.
 */
typedef enum
{
    BSP_INDICATE_FIRST = 0,
    BSP_INDICATE_IDLE  = BSP_INDICATE_FIRST, /**< See \ref BSP_INDICATE_IDLE.*/
    BSP_INDICATE_SCANNING,                   /**< See \ref BSP_INDICATE_SCANNING.*/
    BSP_INDICATE_ADVERTISING,                /**< See \ref BSP_INDICATE_ADVERTISING.*/
    BSP_INDICATE_ADVERTISING_WHITELIST,      /**< See \ref BSP_INDICATE_ADVERTISING_WHITELIST.*/
    BSP_INDICATE_ADVERTISING_SLOW,           /**< See \ref BSP_INDICATE_ADVERTISING_SLOW.*/
    BSP_INDICATE_ADVERTISING_DIRECTED,       /**< See \ref BSP_INDICATE_ADVERTISING_DIRECTED.*/
    BSP_INDICATE_BONDING,                    /**< See \ref BSP_INDICATE_BONDING.*/
    BSP_INDICATE_CONNECTED,                  /**< See \ref BSP_INDICATE_CONNECTED.*/
    BSP_INDICATE_SENT_OK,                    /**< See \ref BSP_INDICATE_SENT_OK.*/
    BSP_INDICATE_SEND_ERROR,                 /**< See \ref BSP_INDICATE_SEND_ERROR.*/
    BSP_INDICATE_RCV_OK,                     /**< See \ref BSP_INDICATE_RCV_OK.*/
    BSP_INDICATE_RCV_ERROR,                  /**< See \ref BSP_INDICATE_RCV_ERROR.*/
    BSP_INDICATE_FATAL_ERROR,                /**< See \ref BSP_INDICATE_FATAL_ERROR.*/
    BSP_INDICATE_ALERT_0,                    /**< See \ref BSP_INDICATE_ALERT_0.*/
    BSP_INDICATE_ALERT_1,                    /**< See \ref BSP_INDICATE_ALERT_1.*/
    BSP_INDICATE_ALERT_2,                    /**< See \ref BSP_INDICATE_ALERT_2.*/
    BSP_INDICATE_ALERT_3,                    /**< See \ref BSP_INDICATE_ALERT_3.*/
    BSP_INDICATE_ALERT_OFF,                  /**< See \ref BSP_INDICATE_ALERT_OFF.*/
    BSP_INDICATE_USER_STATE_OFF,             /**< See \ref BSP_INDICATE_USER_STATE_OFF.*/
    BSP_INDICATE_USER_STATE_0,               /**< See \ref BSP_INDICATE_USER_STATE_0.*/
    BSP_INDICATE_USER_STATE_1,               /**< See \ref BSP_INDICATE_USER_STATE_1.*/
    BSP_INDICATE_USER_STATE_2,               /**< See \ref BSP_INDICATE_USER_STATE_2.*/
    BSP_INDICATE_USER_STATE_3,               /**< See \ref BSP_INDICATE_USER_STATE_3.*/
    BSP_INDICATE_USER_STATE_ON,              /**< See \ref BSP_INDICATE_USER_STATE_ON.*/
    BSP_INDICATE_LAST = BSP_INDICATE_USER_STATE_ON
} bsp_indication_t;

/**@brief BSP events.
 *
 * @note Events from BSP_EVENT_KEY_0 to BSP_EVENT_KEY_LAST are by default assigned to buttons.
 */
typedef enum
{
    BSP_EVENT_NOTHING = 0,                  /**< Assign this event to an action to prevent the action from generating an event (disable the action). */
    BSP_EVENT_DEFAULT,                      /**< Assign this event to an action to assign the default event to the action. */
    BSP_EVENT_CLEAR_BONDING_DATA,           /**< Persistent bonding data should be erased. */
    BSP_EVENT_CLEAR_ALERT,                  /**< An alert should be cleared. */
    BSP_EVENT_DISCONNECT,                   /**< A link should be disconnected. */
    BSP_EVENT_ADVERTISING_START,            /**< The device should start advertising. */
    BSP_EVENT_ADVERTISING_STOP,             /**< The device should stop advertising. */
    BSP_EVENT_WHITELIST_OFF,                /**< The device should remove its advertising whitelist. */
    BSP_EVENT_BOND,                         /**< The device should bond to the currently connected peer. */
    BSP_EVENT_RESET,                        /**< The device should reset. */
    BSP_EVENT_SLEEP,                        /**< The device should enter sleep mode. */
    BSP_EVENT_WAKEUP,                       /**< The device should wake up from sleep mode. */
    BSP_EVENT_DFU,                          /**< The device should enter DFU mode. */
    BSP_EVENT_KEY_0,                        /**< Default event of the push action of BSP_BUTTON_0 (only if this button is present). */
    BSP_EVENT_KEY_1,                        /**< Default event of the push action of BSP_BUTTON_1 (only if this button is present). */
    BSP_EVENT_KEY_2,                        /**< Default event of the push action of BSP_BUTTON_2 (only if this button is present). */
    BSP_EVENT_KEY_3,                        /**< Default event of the push action of BSP_BUTTON_3 (only if this button is present). */
    BSP_EVENT_KEY_4,                        /**< Default event of the push action of BSP_BUTTON_4 (only if this button is present). */
    BSP_EVENT_KEY_5,                        /**< Default event of the push action of BSP_BUTTON_5 (only if this button is present). */
    BSP_EVENT_KEY_6,                        /**< Default event of the push action of BSP_BUTTON_6 (only if this button is present). */
    BSP_EVENT_KEY_7,                        /**< Default event of the push action of BSP_BUTTON_7 (only if this button is present). */
    BSP_EVENT_KEY_LAST = BSP_EVENT_KEY_7,
} bsp_event_t;


typedef struct
{
    bsp_event_t push_event;      /**< The event to fire on regular button press. */
    bsp_event_t long_push_event; /**< The event to fire on long button press. */
    bsp_event_t release_event;   /**< The event to fire on button release. */
} bsp_button_event_cfg_t;

/**@brief BSP module event callback function type.
 *
 * @details     Upon an event in the BSP module, this callback function will be called to notify
 *              the application about the event.
 *
 * @param[in]   bsp_event_t BSP event type.
 */
typedef void (* bsp_event_callback_t)(bsp_event_t);

/**@brief       Function for initializing BSP.
 *
 * @details     The function initializes the board support package to allow state indication and
 *              button reaction. Default events are assigned to buttons.
 * @note        Before calling this function, you must initiate the following required modules:
 *              - @ref app_timer for LED support
 *              - @ref app_gpiote for button support
 *              - @ref app_uart for UART support
 *
 * @param[in]   type               Type of peripherals used.
 * @param[in]   ticks_per_100ms    Number of RTC ticks for 100 ms.
 * @param[in]   callback           Function to be called when button press/event is detected.
 *
 * @retval      NRF_SUCCESS               If the BSP module was successfully initialized.
 * @retval      NRF_ERROR_INVALID_STATE   If the application timer module has not been initialized.
 * @retval      NRF_ERROR_NO_MEM          If the maximum number of timers has already been reached.
 * @retval      NRF_ERROR_INVALID_PARAM   If GPIOTE has too many users.
 * @retval      NRF_ERROR_INVALID_STATE   If button or GPIOTE has not been initialized.
 */
uint32_t bsp_init(uint32_t type, uint32_t ticks_per_100ms, bsp_event_callback_t callback);

/**@brief       Function for getting buttons states.
 *
 * @details     This function allows to get the state of all buttons.
 *
 * @param[in]   p_buttons_state          This variable will store buttons state. Button 0 state is
 *                                       represented by bit 0 (1=pressed), Button 1 state by bit 1,
 *                                       and so on.
 *
 * @retval      NRF_SUCCESS              If buttons state was successfully read.
 */
uint32_t bsp_buttons_state_get(uint32_t * p_buttons_state);

/**@brief       Function for checking buttons states.
 *
 * @details     This function checks if the button is pressed. If the button ID iss out of range,
 *              the function returns false.
 *
 * @param[in]   button                   Button ID to check.
 * @param[in]   p_state                  This variable will store the information whether the
 *                                       specified button is pressed (true) or not.
 *
 * @retval      NRF_SUCCESS              If the button state was successfully read.
 */
uint32_t bsp_button_is_pressed(uint32_t button, bool * p_state);

/**@brief       Function for assigning a specific event to a button.
 *
 * @details     This function allows redefinition of standard events assigned to buttons.
 *              To unassign events, provide the event @ ref BSP_EVENT_NOTHING.
 *
 * @param[in]   button                   Button ID to be redefined.
 * @param[in]   action                   Button action to assign event to.
 * @param[in]   event                    Event to be assigned to button.
 *
 * @retval      NRF_SUCCESS              If the event was successfully assigned to button.
 * @retval      NRF_ERROR_INVALID_PARAM  If the button ID or button action was invalid.
 */
uint32_t bsp_event_to_button_action_assign(uint32_t button, bsp_button_action_t action, bsp_event_t event);

/**@brief       Function for configuring indicators to required state.
 *
 * @details     This function indicates the required state by means of LEDs (if enabled).
 *
 * @note        Alerts are indicated independently.
 *
 * @param[in]   indicate   State to be indicated.
 *
 * @retval      NRF_SUCCESS               If the state was successfully indicated.
 * @retval      NRF_ERROR_NO_MEM          If the internal timer operations queue was full.
 * @retval      NRF_ERROR_INVALID_STATE   If the application timer module has not been initialized,
 *                                        or internal timer has not been created.
 */
uint32_t bsp_indication_set(bsp_indication_t indicate);

/**@brief       Function for configuring indicators to required state.
 *
 * @details     This function indicates the required state by means of LEDs (if enabled)
 *              and UART (if enabled).
 *
 * @note        Alerts are indicated independently.
 *
 * @param[in]   indicate   State to be indicated.
 * @param[in]   p_text     Text to be output on UART.
 *
 * @retval      NRF_SUCCESS               If the state was successfully indicated.
 * @retval      NRF_ERROR_NO_MEM          If the internal timer operations queue was full.
 * @retval      NRF_ERROR_INVALID_STATE   If the application timer module has not been initialized,
 *                                        or timer has not been created.
 */
uint32_t bsp_indication_text_set(bsp_indication_t indicate, const char * p_text);


/**@brief       Function for enabling all buttons.
 *
 * @details     After calling this function, all buttons will generate events when pressed, and
 *              all buttons will be able to wake the system up from sleep mode.
 *
 * @retval      NRF_SUCCESS              If the buttons were successfully enabled.
 * @retval      NRF_ERROR_NOT_SUPPORTED  If the board has no buttons or BSP_SIMPLE is defined.
 * @return      A propagated error.
 */
uint32_t bsp_buttons_enable(void);


/**@brief       Function for disabling all buttons.
 *
 * @details     After calling this function, no buttons will generate events when pressed, and
 *              no buttons will be able to wake the system up from sleep mode.
 *
 * @retval      NRF_SUCCESS              If the buttons were successfully disabled.
 * @retval      NRF_ERROR_NOT_SUPPORTED  If the board has no buttons or BSP_SIMPLE is defined.
 * @return      A propagated error.
 */
uint32_t bsp_buttons_disable(void);


/**@brief       Function for configuring wakeup buttons before going into sleep mode.
 *
 * @details     After calling this function, only the buttons that are set to 1 in wakeup_buttons
 *              can be used to wake up the chip. If this function is not called before going to,
 *              sleep either all or no buttons can wake up the chip.
 *
 * This function should only be called immediately before going into sleep.
 *
 * @param[in]   wakeup_buttons  Mask describing which buttons should be able to wake up the chip.
 *
 * @retval      NRF_SUCCESS              If the buttons were successfully enabled.
 * @retval      NRF_ERROR_NOT_SUPPORTED  If the board has no buttons or BSP_SIMPLE is defined.
 */
uint32_t bsp_wakeup_buttons_set(uint32_t wakeup_buttons);


#endif // BSP_H__

/** @} */
