main.c

/* Copyright (c) 2012 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 ble_sdk_app_template_main main.c
 * @{
 * @ingroup ble_sdk_app_template
 * @brief Template project main file.
 *
 * This file contains a template for creating a new application. It has the code necessary to wakeup
 * from button, advertise, get a connection restart advertising on disconnect and if no new
 * connection created go back to system-off mode.
 * It can easily be used as a starting point for creating a new application, the comments identified
 * with 'YOUR_JOB' indicates where and how you can customize.
 */

#include <stdint.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf.h"
#include "app_error.h"
#include "nrf_gpio.h"
#include "nrf51_bitfields.h"
#include "ble.h"
#include "ble_hci.h"
#include "ble_srv_common.h"
#include "ble_advdata.h"
#include "ble_conn_params.h"
#include "boards.h"
#include "app_scheduler.h"
#include "softdevice_handler.h"
#include "app_timer.h"
#include "ble_error_log.h"
#include "app_gpiote.h"
#include "app_button.h"
#include "ble_debug_assert_handler.h"
#include "pstorage.h"
#include "localLibs/app_state_machine.h"
#include "localLibs/alpine_boards.h"
#include "localLibs/alpine_tl_state_machine.h"

#define IS_SRVC_CHANGED_CHARACT_PRESENT 0                                           /**< Include or not the service_changed characteristic. if not enabled, the server's database cannot be changed for the lifetime of the device*/

#define WAKEUP_BUTTON_PIN               BUTTON_0                                    /**< Button used to wake up the application. */
// YOUR_JOB: Define any other buttons to be used by the applications:
// #define MY_BUTTON_PIN                   BUTTON_1

#define ADVERTISING_LED_PIN_NO          BUTTON_0                                       /**< Is on when device is advertising. */
#define CONNECTED_LED_PIN_NO            BUTTON_0                                       /**< Is on when device has connected. */
//#define ASSERT_LED_PIN_NO               LED_7                                       /**< Is on when application has asserted. */



#define DEVICE_NAME                     "Michron BLE 1_0"                           /**< Name of device. Will be included in the advertising data. */

#define APP_ADV_INTERVAL                64                                          /**< The advertising interval (in units of 0.625 ms. This value corresponds to 40 ms). */
#define APP_ADV_TIMEOUT_IN_SECONDS      180                                         /**< The advertising timeout (in units of seconds). */

#define APP_TIMER_MAX_TIMERS            6                                          /**< Maximum number of simultaneously created timers. */
#define APP_TIMER_OP_QUEUE_SIZE         4                                           /**< Size of timer operation queues. */

#define MIN_CONN_INTERVAL               MSEC_TO_UNITS(500, UNIT_1_25_MS)            /**< Minimum acceptable connection interval (0.5 seconds). */
#define MAX_CONN_INTERVAL               MSEC_TO_UNITS(1000, UNIT_1_25_MS)           /**< Maximum acceptable connection interval (1 second). */
#define SLAVE_LATENCY                   0                                           /**< Slave latency. */
#define CONN_SUP_TIMEOUT                MSEC_TO_UNITS(4000, UNIT_10_MS)             /**< Connection supervisory timeout (4 seconds). */
#define FIRST_CONN_PARAMS_UPDATE_DELAY  APP_TIMER_TICKS(5000, APP_TIMER_PRESCALER)  /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */
#define NEXT_CONN_PARAMS_UPDATE_DELAY   APP_TIMER_TICKS(30000, APP_TIMER_PRESCALER) /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */
#define MAX_CONN_PARAMS_UPDATE_COUNT    3                                           /**< Number of attempts before giving up the connection parameter negotiation. */

#define APP_GPIOTE_MAX_USERS            1                                           /**< Maximum number of users of the GPIOTE handler. */

#define BUTTON_DETECTION_DELAY          APP_TIMER_TICKS(50, APP_TIMER_PRESCALER)    /**< Delay from a GPIOTE event until a button is reported as pushed (in number of timer ticks). */

#define SEC_PARAM_TIMEOUT               30                                          /**< Timeout for Pairing Request or Security Request (in seconds). */
#define SEC_PARAM_BOND                  1                                           /**< Perform bonding. */
#define SEC_PARAM_MITM                  0                                           /**< Man In The Middle protection not required. */
#define SEC_PARAM_IO_CAPABILITIES       BLE_GAP_IO_CAPS_NONE                        /**< No I/O capabilities. */
#define SEC_PARAM_OOB                   0                                           /**< Out Of Band data not available. */
#define SEC_PARAM_MIN_KEY_SIZE          7                                           /**< Minimum encryption key size. */
#define SEC_PARAM_MAX_KEY_SIZE          16                                          /**< Maximum encryption key size. */

#define DEAD_BEEF                       0xDEADBEEF                                  /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */

static ble_gap_sec_params_t             m_sec_params;                               /**< Security requirements for this application. */
static uint16_t                         m_conn_handle = BLE_CONN_HANDLE_INVALID;    /**< Handle of the current connection. */
static ble_sm_t 												m_ble_sm;		//module level variable for rhe app state machine service


// YOUR_JOB: Modify these according to requirements (e.g. if other event types are to pass through
//           the scheduler).
#define SCHED_MAX_EVENT_DATA_SIZE       sizeof(app_timer_event_t)                   /**< Maximum size of scheduler events. Note that scheduler BLE stack events do not contain any data, as the events are being pulled from the stack in the event handler. */
#define SCHED_QUEUE_SIZE                10                                          /**< Maximum number of events in the scheduler queue. */

// Persistent storage system event handler
void pstorage_sys_event_handler (uint32_t p_evt);

/**@brief Function for error handling, which is called when an error has occurred.
 *
 * @warning This handler is an example only and does not fit a final product. You need to analyze
 *          how your product is supposed to react in case of error.
 *
 * @param[in] error_code  Error code supplied to the handler.
 * @param[in] line_num    Line number where the handler is called.
 * @param[in] p_file_name Pointer to the file name.
 */
void app_error_handler(uint32_t error_code, uint32_t line_num, const uint8_t * p_file_name)
{
 //   nrf_gpio_pin_set(ASSERT_LED_PIN_NO);

    // This call can be used for debug purposes during application development.
    // @note CAUTION: Activating this code will write the stack to flash on an error.
    //                This function should NOT be used in a final product.
    //                It is intended STRICTLY for development/debugging purposes.
    //                The flash write will happen EVEN if the radio is active, thus interrupting
    //                any communication.
    //                Use with care. Un-comment the line below to use.
	//FLAG SAH absolutely remove for production !!!!!!   !!
     ble_debug_assert_handler(error_code, line_num, p_file_name);
	
    // On assert, the system can only recover with a reset.
    //NVIC_SystemReset();  FLAG SAH uncomment this line for production! !!! !! !
}


/**@brief Callback function for asserts in the SoftDevice.
 *
 * @details This function will be called in case of an assert in the SoftDevice.
 *
 * @warning This handler is an example only and does not fit a final product. You need to analyze
 *          how your product is supposed to react in case of Assert.
 * @warning On assert from the SoftDevice, the system can only recover on reset.
 *
 * @param[in]   line_num   Line number of the failing ASSERT call.
 * @param[in]   file_name  File name of the failing ASSERT call.
 */
void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name)
{
    app_error_handler(DEAD_BEEF, line_num, p_file_name);
}


/**@brief Function for handling Service errors.
 *
 * @details A pointer to this function will be passed to each service which may need to inform the
 *          application about an error.
 *
 * @param[in]   nrf_error   Error code containing information about what went wrong.
 */
/*
// YOUR_JOB: Uncomment this function and make it handle error situations sent back to your
//           application by the services it uses.
static void service_error_handler(uint32_t nrf_error)
{
    APP_ERROR_HANDLER(nrf_error);
} */


/**@brief Function for the Pins initialization.
 *
 * @details Initializes all pins used by the application.
 */
static void pins_init(void)
{
		init_alpine_pins();
		//need to add the rest of the michron pin inits in here
}


/**@brief Function for the Timer initialization.
 *
 * @details Initializes the timer module.
 */
static void timers_init(void)
{
  // Initialize timer module, making it use the scheduler
  APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_MAX_TIMERS, APP_TIMER_OP_QUEUE_SIZE, true);

  ///For every new timer needed, increase the value of the macro APP_TIMER_MAX_TIMERS by one.
  uint32_t err_code  ;
	err_code = app_timer_create(&Regular_sm_timer, APP_TIMER_MODE_SINGLE_SHOT, RegularTimerDone);
	APP_ERROR_CHECK(err_code); 
	err_code = app_timer_create(&Secondary_sm_timer, APP_TIMER_MODE_SINGLE_SHOT, PeripheralTimerDone);
	APP_ERROR_CHECK(err_code); 
	err_code = app_timer_create(&EventClearTimer, APP_TIMER_MODE_REPEATED, ProcessEvents);
	APP_ERROR_CHECK(err_code);
}


/**@brief Function for the GAP initialization.
 *
 * @details This function sets up all the necessary GAP (Generic Access Profile) parameters of the
 *          device including the device name, appearance, and the preferred connection parameters.
 */
static void gap_params_init(void)
{
    uint32_t                err_code;
    ble_gap_conn_params_t   gap_conn_params;
    ble_gap_conn_sec_mode_t sec_mode;

    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);

    err_code = sd_ble_gap_device_name_set(&sec_mode,
                                          (const uint8_t *)DEVICE_NAME,
                                          strlen(DEVICE_NAME));
    APP_ERROR_CHECK(err_code);

    /* YOUR_JOB: Use an appearance value matching the application's use case.
    err_code = sd_ble_gap_appearance_set(BLE_APPEARANCE_);
    APP_ERROR_CHECK(err_code); */

    memset(&gap_conn_params, 0, sizeof(gap_conn_params));

    gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL;
    gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL;
    gap_conn_params.slave_latency     = SLAVE_LATENCY;
    gap_conn_params.conn_sup_timeout  = CONN_SUP_TIMEOUT;

    err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for initializing the Advertising functionality.
 *
 * @details Encodes the required advertising data and passes it to the stack.
 *          Also builds a structure to be passed to the stack when starting advertising.
 */
static void advertising_init(void)
{
    uint32_t      err_code;
    ble_advdata_t advdata;
    uint8_t       flags = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE;

    // YOUR_JOB: Use UUIDs for service(s) used in your application.
    ble_uuid_t adv_uuids[] = {{BLE_UUID_BATTERY_SERVICE, BLE_UUID_TYPE_BLE}};

    // Build and set advertising data
    memset(&advdata, 0, sizeof(advdata));

    advdata.name_type               = BLE_ADVDATA_FULL_NAME;
    advdata.include_appearance      = true;
    advdata.flags.size              = sizeof(flags);
    advdata.flags.p_data            = &flags;
    advdata.uuids_complete.uuid_cnt = sizeof(adv_uuids) / sizeof(adv_uuids[0]);
    advdata.uuids_complete.p_uuids  = adv_uuids;

    err_code = ble_advdata_set(&advdata, NULL);
    APP_ERROR_CHECK(err_code);
}

//this handles the shutter write event
static void shutter_write_handler(ble_sm_t * p_ble_sm, uint8_t* array_in)
{
	uint8_t shutter_cmd = array_in[0];
		G_STAT_LED_ON; //turn the LED on
	//throw an event that the shutter write handler was called, and pass through the first 2 bytes of the inbound data
	AddEventToTlSmQueue_extern(SHUTTER_CMD_EVT, array_in[0], array_in[1] );
}

/**@brief Function for handling writes to the Timelapse packet characteristic
 *
 * @details saves the tl data into a temporary array. When a valid completed packet has been sent
						it calls the New_tl_settings_rcvd() function
FLAG SAH we need to add a system into this for alerting the host to successes or failures in the communications process

*/
static void tl_pkt_write_handler(ble_sm_t * p_ble_sm, uint8_t* tl_pkt)
{
	static uint8_t num_packets = 3;
	static int8_t last_packet_num = 0;
	static uint8_t incoming_vals [TL_PACKET_MAX_LEN];
	uint8_t packet_num = tl_pkt[0];
	uint16_t temp	= 0;
	int i;
	
	if (packet_num ==0) //if this is the first packet, then we need to get some information from it
	{
		num_packets = tl_pkt[2]; //grab the number of Tls being sent
		num_packets = num_packets * TL_PACKET_STD_LEN + TL_PACKET_PREAMBLE_LEN + TL_PACKET_POSTAMBLE_LEN; //compute the expected length of the settings being sent
		//FLAG SAH we need to thrown in a math.roundup in here
		num_packets = num_packets / TL_SUB_PACKET_LEN; //figure out how many packets this will equal
		last_packet_num=-1;//need to reset this value
	}
	//if packet num is 0 this still works
	if( packet_num == (last_packet_num+1)) //check if our new packet number is correctly an increment of the last. This avoids missing a packet
	{
		temp = packet_num * TL_SUB_PACKET_LEN;
		for(uint8_t i = 1; i <= TL_SUB_PACKET_LEN; i++){
			incoming_vals[temp] = tl_pkt[i];
			temp++; //important that we keep this value where it is since we use it later on
		}
		//check if we are on the last packet. If so then we need to check the checksum and that the last value flag is in the right place
		if(packet_num == num_packets){
			if( Tl_pkt_is_good( incoming_vals ) ){
				UpdateCurrentTlPacket(incoming_vals , temp); //update the currently-used time lapse values array
				AddEventToTlSmQueue_extern(NEW_TL_PACKET_EVT,GOOD_PKT,0); //alert the tl state machine that a good packet was recieved
			}
			else  AddEventToTlSmQueue_extern(NEW_TL_PACKET_EVT,BAD_PKT,0); //aler the TL stat machine that a bad packet was recieved
		}
		last_packet_num =packet_num; //increment our packet number
	}
}

/**@brief Function for initializing services that will be used by the application.
 */
static void services_init(void)
{
    // YOUR_JOB: Add code to initialize the services used by the application.
		uint32_t err_code;
	
		ble_sm_init_t init;
	
	
	
		init.shutter_write_handler = shutter_write_handler;
		init.tl_pkt_write_handler = tl_pkt_write_handler;
		err_code = ble_sm_init(&m_ble_sm, &init);
		APP_ERROR_CHECK(err_code);	
	
}


/**@brief Function for initializing security parameters.
 */
static void sec_params_init(void)
{
    m_sec_params.timeout      = SEC_PARAM_TIMEOUT;
    m_sec_params.bond         = SEC_PARAM_BOND;
    m_sec_params.mitm         = SEC_PARAM_MITM;
    m_sec_params.io_caps      = SEC_PARAM_IO_CAPABILITIES;
    m_sec_params.oob          = SEC_PARAM_OOB;
    m_sec_params.min_key_size = SEC_PARAM_MIN_KEY_SIZE;
    m_sec_params.max_key_size = SEC_PARAM_MAX_KEY_SIZE;
}


/**@brief Function for handling the Connection Parameters Module.
 *
 * @details This function will be called for all events in the Connection Parameters Module which
 *          are passed to the application.
 *          @note All this function does is to disconnect. This could have been done by simply
 *                setting the disconnect_on_fail config parameter, but instead we use the event
 *                handler mechanism to demonstrate its use.
 *
 * @param[in]   p_evt   Event received from the Connection Parameters Module.
 */
static void on_conn_params_evt(ble_conn_params_evt_t * p_evt)
{
    uint32_t err_code;

    if(p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED)
    {
        err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
        APP_ERROR_CHECK(err_code);
    }
}


/**@brief Function for handling a Connection Parameters error.
 *
 * @param[in]   nrf_error   Error code containing information about what went wrong.
 */
static void conn_params_error_handler(uint32_t nrf_error)
{
    APP_ERROR_HANDLER(nrf_error);
}


/**@brief Function for initializing the Connection Parameters module.
 */
static void conn_params_init(void)
{
    uint32_t               err_code;
    ble_conn_params_init_t cp_init;

    memset(&cp_init, 0, sizeof(cp_init));

    cp_init.p_conn_params                  = NULL;
    cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY;
    cp_init.next_conn_params_update_delay  = NEXT_CONN_PARAMS_UPDATE_DELAY;
    cp_init.max_conn_params_update_count   = MAX_CONN_PARAMS_UPDATE_COUNT;
    cp_init.start_on_notify_cccd_handle    = BLE_GATT_HANDLE_INVALID;
    cp_init.disconnect_on_fail             = false;
    cp_init.evt_handler                    = on_conn_params_evt;
    cp_init.error_handler                  = conn_params_error_handler;

    err_code = ble_conn_params_init(&cp_init);
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for starting timers.
*/
static void timers_start(void)
{
	uint32_t err_code = NRF_SUCCESS ;
	err_code = app_timer_start(EventClearTimer, EVENT_TIMER_TIME, NULL); //start up our periodic timer that checks the event queue
	APP_ERROR_CHECK(err_code);
}


/**@brief Function for starting advertising.
 */
static void advertising_start(void)
{
    uint32_t             err_code;
    ble_gap_adv_params_t adv_params;

    // Start advertising
    memset(&adv_params, 0, sizeof(adv_params));

    adv_params.type        = BLE_GAP_ADV_TYPE_ADV_IND;
    adv_params.p_peer_addr = NULL;
    adv_params.fp          = BLE_GAP_ADV_FP_ANY;
    adv_params.interval    = APP_ADV_INTERVAL;
    adv_params.timeout     = APP_ADV_TIMEOUT_IN_SECONDS;

    err_code = sd_ble_gap_adv_start(&adv_params);
    APP_ERROR_CHECK(err_code);
    nrf_gpio_pin_set(ADVERTISING_LED_PIN_NO);
}


/**@brief Function for handling the Application's BLE Stack events.
 *
 * @param[in]   p_ble_evt   Bluetooth stack event.
 */
static void on_ble_evt(ble_evt_t * p_ble_evt)
{
    uint32_t                         err_code;
    static ble_gap_evt_auth_status_t m_auth_status;
    ble_gap_enc_info_t *             p_enc_info;

    switch (p_ble_evt->header.evt_id)
    {
        case BLE_GAP_EVT_CONNECTED:
            nrf_gpio_pin_set(CONNECTED_LED_PIN_NO);
            nrf_gpio_pin_clear(ADVERTISING_LED_PIN_NO);
            m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;

            /* YOUR_JOB: Uncomment this part if you are using the app_button module to handle button
                         events (assuming that the button events are only needed in connected
                         state). If this is uncommented out here,
                            1. Make sure that app_button_disable() is called when handling
                               BLE_GAP_EVT_DISCONNECTED below.
                            2. Make sure the app_button module is initialized.
            err_code = app_button_enable();
            APP_ERROR_CHECK(err_code);
            */
            break;

        case BLE_GAP_EVT_DISCONNECTED:
            nrf_gpio_pin_clear(CONNECTED_LED_PIN_NO);
            m_conn_handle = BLE_CONN_HANDLE_INVALID;

            /* YOUR_JOB: Uncomment this part if you are using the app_button module to handle button
                         events. This should be done to save power when not connected
                         to a peer.
            err_code = app_button_disable();
            APP_ERROR_CHECK(err_code);
            */
            
                advertising_start();
            break;

        case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
            err_code = sd_ble_gap_sec_params_reply(m_conn_handle,
                                                   BLE_GAP_SEC_STATUS_SUCCESS,
                                                   &m_sec_params);
            APP_ERROR_CHECK(err_code);
            break;

        case BLE_GATTS_EVT_SYS_ATTR_MISSING:
            err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0);
            APP_ERROR_CHECK(err_code);
            break;

        case BLE_GAP_EVT_AUTH_STATUS:
            m_auth_status = p_ble_evt->evt.gap_evt.params.auth_status;
            break;

        case BLE_GAP_EVT_SEC_INFO_REQUEST:
            p_enc_info = &m_auth_status.periph_keys.enc_info;
            if (p_enc_info->div == p_ble_evt->evt.gap_evt.params.sec_info_request.div)
            {
                err_code = sd_ble_gap_sec_info_reply(m_conn_handle, p_enc_info, NULL);
                APP_ERROR_CHECK(err_code);
            }
            else
            {
                // No keys found for this device
                err_code = sd_ble_gap_sec_info_reply(m_conn_handle, NULL, NULL);
                APP_ERROR_CHECK(err_code);
            }
            break;

        case BLE_GAP_EVT_TIMEOUT:
            if (p_ble_evt->evt.gap_evt.params.timeout.src == BLE_GAP_TIMEOUT_SRC_ADVERTISEMENT)
            {
                nrf_gpio_pin_clear(ADVERTISING_LED_PIN_NO);

                // Configure buttons with sense level low as wakeup source.
                nrf_gpio_cfg_sense_input(WAKEUP_BUTTON_PIN,
                                         BUTTON_PULL,
                                         NRF_GPIO_PIN_SENSE_LOW);
                
                // Go to system-off mode (this function will not return; wakeup will cause a reset)                
                err_code = sd_power_system_off();
                APP_ERROR_CHECK(err_code);
            }
            break;

        default:
            // No implementation needed.
            break;
    }
}


/**@brief Function for dispatching a BLE stack event to all modules with a BLE stack event handler.
 *
 * @details This function is called from the scheduler in the main loop after a BLE stack
 *          event has been received.
 *
 * @param[in]   p_ble_evt   Bluetooth stack event.
 */
static void ble_evt_dispatch(ble_evt_t * p_ble_evt)
{
    on_ble_evt(p_ble_evt);
    ble_conn_params_on_ble_evt(p_ble_evt);
    /*
    YOUR_JOB: Add service ble_evt handlers calls here, like, for example:
    ble_bas_on_ble_evt(&m_bas, p_ble_evt);
    */
	 //have the state machine handle the event
	 ble_sm_on_ble_evt(&m_ble_sm, p_ble_evt);
	
}


/**@brief Function for dispatching a system event to interested modules.
 *
 * @details This function is called from the System event interrupt handler after a system
 *          event has been received.
 *
 * @param[in]   sys_evt   System stack event.
 */
static void sys_evt_dispatch(uint32_t sys_evt)
{
    pstorage_sys_event_handler(sys_evt);
}


/**@brief Function for initializing the BLE stack.
 *
 * @details Initializes the SoftDevice and the BLE event interrupt.
 */
static void ble_stack_init(void)
{
    uint32_t err_code;

    // Initialize the SoftDevice handler module.
    SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_RC_250_PPM_1000MS_CALIBRATION, false);

    // Enable BLE stack 
    ble_enable_params_t ble_enable_params;
    memset(&ble_enable_params, 0, sizeof(ble_enable_params));
    ble_enable_params.gatts_enable_params.service_changed = IS_SRVC_CHANGED_CHARACT_PRESENT;
    err_code = sd_ble_enable(&ble_enable_params);
    APP_ERROR_CHECK(err_code);

    // Register with the SoftDevice handler module for BLE events.
    err_code = softdevice_ble_evt_handler_set(ble_evt_dispatch);
    APP_ERROR_CHECK(err_code);
    
    // Register with the SoftDevice handler module for BLE events.
    err_code = softdevice_sys_evt_handler_set(sys_evt_dispatch);
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for the Event Scheduler initialization.
 */
static void scheduler_init(void)
{
    APP_SCHED_INIT(SCHED_MAX_EVENT_DATA_SIZE, SCHED_QUEUE_SIZE);
}

/**@brief Function for handling an input pin event.
 *
 * @param[in]   pin_no         Pin that had an event happen.
 * @param[in]   button_event   APP_BUTTON_PUSH or APP_BUTTON_RELEASE.
 */
/* YOUR_JOB: Uncomment this function if you need to handle button events.
static void button_event_handler(uint8_t pin_no, uint8_t button_event)
{
    if (button_action == APP_BUTTON_PUSH)
    {
        switch (pin_no)
        {
            case MY_BUTTON_PIN:
                // Code to handle MY_BUTTON keypresses
                break;

            // Handle any other buttons

            default:
                APP_ERROR_HANDLER(pin_no);
                break;
        }
    }
}
*/

/**@brief Function for initializing the GPIOTE handler module.
 */
static void gpiote_init(void)
{
    APP_GPIOTE_INIT(APP_GPIOTE_MAX_USERS);
}


/**@brief Function for initializing the button handler module.
 */
static void input_interrupts_init(void)
{
    // Note: Array must be static because a pointer to it will be saved in the Button handler
    //       module.
    static app_button_cfg_t buttons[] =
    {
        {WAKEUP_BUTTON_PIN, APP_BUTTON_ACTIVE_LOW, BUTTON_PULL, NULL},
        // YOUR_JOB: Add other buttons to be used:
        // {MY_BUTTON_PIN,     false, BUTTON_PULL, button_event_handler}
    };

    APP_BUTTON_INIT(buttons, sizeof(buttons) / sizeof(buttons[0]), BUTTON_DETECTION_DELAY, true);

    // Note: If the only use of buttons is to wake up, the app_button module can be omitted, and
    //       the wakeup button can be configured by
    // GPIO_WAKEUP_BUTTON_CONFIG(WAKEUP_BUTTON_PIN);
}


/**@brief Function for the Power manager.
 */
static void power_manage(void)
{
    uint32_t err_code = sd_app_evt_wait();
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for application main entry.
 */
int main(void)
{
    // Initialize
    pins_init();
    timers_init();
    gpiote_init();
    input_interrupts_init();
    ble_stack_init();
    scheduler_init();    
    gap_params_init();
    advertising_init();
    services_init();
    conn_params_init();
    sec_params_init();

    // Start execution
		StartupStateMachine();
  	timers_start();
    advertising_start();

	
    // Enter main loop
    for (;;)
    {
        app_sched_execute();
     //   power_manage(); //FLAG SAH turned off power management for now
    }
}

/**
 * @}
 */