Diff: nRF51822/nordic-sdk/components/ble/common/ble_conn_params.cpp

Revision:

3:24e365bd1b97

Parent:

2:b61ddbb8528e

--- a/nRF51822/nordic-sdk/components/ble/common/ble_conn_params.cpp	Thu Nov 05 02:46:37 2015 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,361 +0,0 @@
-/* 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.
- *
- */
-
-#include "ble_conn_params.h"
-#include <stdlib.h>
-#include "nordic_common.h"
-#include "ble_hci.h"
-#include "ble_srv_common.h"
-#include "app_util.h"
-
-#ifdef USE_APP_TIMER
-#include "app_timer.h"
-#else
-#include "mbed.h"
-#endif
-
-static ble_conn_params_init_t m_conn_params_config;     /**< Configuration as specified by the application. */
-static ble_gap_conn_params_t  m_preferred_conn_params;  /**< Connection parameters preferred by the application. */
-static uint8_t                m_update_count;           /**< Number of Connection Parameter Update messages that has currently been sent. */
-static uint16_t               m_conn_handle;            /**< Current connection handle. */
-static ble_gap_conn_params_t  m_current_conn_params;    /**< Connection parameters received in the most recent Connect event. */
-#ifdef USE_APP_TIMER
-static app_timer_id_t         m_conn_params_timer_id;   /**< Connection parameters timer. */
-#else
-static Ticker                 m_conn_params_timer;
-#endif
-
-static bool m_change_param = false;
-
-static bool is_conn_params_ok(ble_gap_conn_params_t * p_conn_params)
-{
-    // Check if interval is within the acceptable range.
-    // NOTE: Using max_conn_interval in the received event data because this contains
-    //       the client's connection interval.
-    if (
-        (p_conn_params->max_conn_interval >= m_preferred_conn_params.min_conn_interval)
-        && 
-        (p_conn_params->max_conn_interval <= m_preferred_conn_params.max_conn_interval)
-       )
-    {
-        return true;
-    }
-    else
-    {
-        return false;
-    }
-}
-
-
-#ifdef USE_APP_TIMER
-static void update_timeout_handler(void * p_context)
-{
-    UNUSED_PARAMETER(p_context);
-
-#else /* #if !USE_APP_TIMER */
-static void update_timeout_handler(void)
-{
-    m_conn_params_timer.detach(); /* this is supposed to be a single-shot timer callback */
-#endif /* #if !USE_APP_TIMER */
-    if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
-    {
-        // Check if we have reached the maximum number of attempts
-        m_update_count++;
-        if (m_update_count <= m_conn_params_config.max_conn_params_update_count)
-        {
-            uint32_t err_code;
-
-            // Parameters are not ok, send connection parameters update request.
-            err_code = sd_ble_gap_conn_param_update(m_conn_handle, &m_preferred_conn_params);
-            if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
-            {
-                m_conn_params_config.error_handler(err_code);
-            }
-        }
-        else
-        {
-            m_update_count = 0;
-
-            // Negotiation failed, disconnect automatically if this has been configured
-            if (m_conn_params_config.disconnect_on_fail)
-            {
-                uint32_t err_code;
-
-                err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
-                if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
-                {
-                    m_conn_params_config.error_handler(err_code);
-                }
-            }
-
-            // Notify the application that the procedure has failed
-            if (m_conn_params_config.evt_handler != NULL)
-            {
-                ble_conn_params_evt_t evt;
-
-                evt.evt_type = BLE_CONN_PARAMS_EVT_FAILED;
-                m_conn_params_config.evt_handler(&evt);
-            }
-        }
-    }
-}
-
-
-uint32_t ble_conn_params_init(const ble_conn_params_init_t * p_init)
-{
-    uint32_t err_code;
-
-    m_conn_params_config = *p_init;
-    m_change_param = false;
-    if (p_init->p_conn_params != NULL)
-    {
-        m_preferred_conn_params = *p_init->p_conn_params;
-
-        // Set the connection params in stack
-        err_code = sd_ble_gap_ppcp_set(&m_preferred_conn_params);
-        if (err_code != NRF_SUCCESS)
-        {
-            return err_code;
-        }
-    }
-    else
-    {
-        // Fetch the connection params from stack
-        err_code = sd_ble_gap_ppcp_get(&m_preferred_conn_params);
-        if (err_code != NRF_SUCCESS)
-        {
-            return err_code;
-        }
-    }
-
-    m_conn_handle  = BLE_CONN_HANDLE_INVALID;
-    m_update_count = 0;
-
-#ifdef USE_APP_TIMER
-    return app_timer_create(&m_conn_params_timer_id,
-                            APP_TIMER_MODE_SINGLE_SHOT,
-                            update_timeout_handler);
-#else
-    return NRF_SUCCESS;
-#endif
-}
-
-
-uint32_t ble_conn_params_stop(void)
-{
-#ifdef USE_APP_TIMER
-    return app_timer_stop(m_conn_params_timer_id);
-#else /* #if !USE_APP_TIMER */
-    m_conn_params_timer.detach();
-    return NRF_SUCCESS;
-#endif /* #if !USE_APP_TIMER */
-}
-
-
-static void conn_params_negotiation(void)
-{
-    // Start negotiation if the received connection parameters are not acceptable
-    if (!is_conn_params_ok(&m_current_conn_params))
-    {
-#ifdef USE_APP_TIMER
-        uint32_t err_code;
-#endif
-        uint32_t timeout_ticks;
-
-        if (m_change_param)
-        {
-            // Notify the application that the procedure has failed
-            if (m_conn_params_config.evt_handler != NULL)
-            {
-                ble_conn_params_evt_t evt;
-
-                evt.evt_type = BLE_CONN_PARAMS_EVT_FAILED;
-                m_conn_params_config.evt_handler(&evt);
-            }
-        }
-        else
-        {
-            if (m_update_count == 0)
-            {
-                // First connection parameter update
-                timeout_ticks = m_conn_params_config.first_conn_params_update_delay;
-            }
-            else
-            {
-                timeout_ticks = m_conn_params_config.next_conn_params_update_delay;
-            }
-
-#ifdef USE_APP_TIMER
-            err_code = app_timer_start(m_conn_params_timer_id, timeout_ticks, NULL);
-            if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
-            {
-                m_conn_params_config.error_handler(err_code);
-            }
-#else
-            m_conn_params_timer.attach(update_timeout_handler, timeout_ticks / 32768);
-#endif
-        }
-    }
-    else
-    {
-        // Notify the application that the procedure has succeded
-        if (m_conn_params_config.evt_handler != NULL)
-        {
-            ble_conn_params_evt_t evt;
-
-            evt.evt_type = BLE_CONN_PARAMS_EVT_SUCCEEDED;
-            m_conn_params_config.evt_handler(&evt);
-        }
-    }
-    m_change_param = false;
-}
-
-
-static void on_connect(ble_evt_t * p_ble_evt)
-{
-    // Save connection parameters
-    m_conn_handle         = p_ble_evt->evt.gap_evt.conn_handle;
-    m_current_conn_params = p_ble_evt->evt.gap_evt.params.connected.conn_params;
-    m_update_count        = 0;  // Connection parameter negotiation should re-start every connection
-
-    // Check if we shall handle negotiation on connect
-    if (m_conn_params_config.start_on_notify_cccd_handle == BLE_GATT_HANDLE_INVALID)
-    {
-        conn_params_negotiation();
-    }
-}
-
-
-static void on_disconnect(ble_evt_t * p_ble_evt)
-{
-#ifdef USE_APP_TIMER
-    uint32_t err_code;
-#endif
-
-    m_conn_handle = BLE_CONN_HANDLE_INVALID;
-
-    // Stop timer if running
-    m_update_count = 0; // Connection parameters updates should happen during every connection
-
-#ifdef USE_APP_TIMER
-    err_code = app_timer_stop(m_conn_params_timer_id);
-    if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
-    {
-        m_conn_params_config.error_handler(err_code);
-    }
-#else
-    m_conn_params_timer.detach();
-#endif
-}
-
-
-static void on_write(ble_evt_t * p_ble_evt)
-{
-    ble_gatts_evt_write_t * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write;
-
-    // Check if this the correct CCCD
-    if (
-        (p_evt_write->handle == m_conn_params_config.start_on_notify_cccd_handle)
-        &&
-        (p_evt_write->len == 2)
-       )
-    {
-        // Check if this is a 'start notification'
-        if (ble_srv_is_notification_enabled(p_evt_write->data))
-        {
-            // Do connection parameter negotiation if necessary
-            conn_params_negotiation();
-        }
-        else
-        {
-#ifdef USE_APP_TIMER
-            uint32_t err_code;
-
-            // Stop timer if running
-            err_code = app_timer_stop(m_conn_params_timer_id);
-            if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
-            {
-                m_conn_params_config.error_handler(err_code);
-            }
-#else /* #if !USE_APP_TIMER */
-            m_conn_params_timer.detach();
-#endif /* #if !USE_APP_TIMER */
-        }
-    }
-}
-
-
-static void on_conn_params_update(ble_evt_t * p_ble_evt)
-{
-    // Copy the parameters
-    m_current_conn_params = p_ble_evt->evt.gap_evt.params.conn_param_update.conn_params;
-
-    conn_params_negotiation();
-}
-
-
-void ble_conn_params_on_ble_evt(ble_evt_t * p_ble_evt)
-{
-    switch (p_ble_evt->header.evt_id)
-    {
-        case BLE_GAP_EVT_CONNECTED:
-            on_connect(p_ble_evt);
-            break;
-
-        case BLE_GAP_EVT_DISCONNECTED:
-            on_disconnect(p_ble_evt);
-            break;
-
-        case BLE_GATTS_EVT_WRITE:
-            on_write(p_ble_evt);
-            break;
-
-        case BLE_GAP_EVT_CONN_PARAM_UPDATE:
-            on_conn_params_update(p_ble_evt);
-            break;
-
-        default:
-            // No implementation needed.
-            break;
-    }
-}
-
-uint32_t ble_conn_params_change_conn_params(ble_gap_conn_params_t *new_params)
-{
-    uint32_t err_code;
-
-    m_preferred_conn_params = *new_params;
-    // Set the connection params in stack
-    err_code = sd_ble_gap_ppcp_set(&m_preferred_conn_params);
-    if (err_code == NRF_SUCCESS)
-    {
-        if (!is_conn_params_ok(&m_current_conn_params))
-        {
-            m_change_param = true;
-            err_code = sd_ble_gap_conn_param_update(m_conn_handle, &m_preferred_conn_params);
-            m_update_count = 1;
-        }
-        else
-        {
-            // Notify the application that the procedure has succeded
-            if (m_conn_params_config.evt_handler != NULL)
-            {
-                ble_conn_params_evt_t evt;
-
-                evt.evt_type = BLE_CONN_PARAMS_EVT_SUCCEEDED;
-                m_conn_params_config.evt_handler(&evt);
-            }
-            err_code = NRF_SUCCESS;
-        }
-    }
-    return err_code;
-}
\ No newline at end of file