Diff: nordic/nrf-sdk/ble/ble_conn_params.h

Revision:

0:eff01767de02

Child:

37:c29c330d942c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nordic/nrf-sdk/ble/ble_conn_params.h	Wed Mar 26 14:38:17 2014 +0000
@@ -0,0 +1,112 @@
+/* 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_lib_conn_params Connection Parameters Negotiation
+ * @{
+ * @ingroup ble_sdk_lib
+ * @brief Module for initiating and executing a connection parameters negotiation procedure.
+ */
+
+#ifndef BLE_CONN_PARAMS_H__
+#define BLE_CONN_PARAMS_H__
+
+#include <stdint.h>
+#include "nordic_global.h"
+#include "ble.h"
+#include "ble_srv_common.h"
+
+/**@brief Connection Parameters Module event type. */
+typedef enum
+{
+    BLE_CONN_PARAMS_EVT_FAILED   ,                                  /**< Negotiation procedure failed. */
+    BLE_CONN_PARAMS_EVT_SUCCEEDED                                   /**< Negotiation procedure succeeded. */
+} ble_conn_params_evt_type_t;
+
+/**@brief Connection Parameters Module event. */
+typedef struct
+{
+    ble_conn_params_evt_type_t evt_type;                            /**< Type of event. */
+} ble_conn_params_evt_t;
+
+/**@brief Connection Parameters Module event handler type. */
+typedef void (*ble_conn_params_evt_handler_t) (ble_conn_params_evt_t * p_evt);
+
+/**@brief Connection Parameters Module init structure. This contains all options and data needed for
+ *        initialization of the connection parameters negotiation module. */
+typedef struct
+{
+    ble_gap_conn_params_t *       p_conn_params;                    /**< Pointer to the connection parameters desired by the application. When calling ble_conn_params_init, if this parameter is set to NULL, the connection parameters will be fetched from host. */
+    uint32_t                      first_conn_params_update_delay;   /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (in number of timer ticks). */
+    uint32_t                      next_conn_params_update_delay;    /**< Time between each call to sd_ble_gap_conn_param_update after the first (in number of timer ticks). Recommended value 30 seconds as per BLUETOOTH SPECIFICATION Version 4.0. */
+    uint8_t                       max_conn_params_update_count;     /**< Number of attempts before giving up the negotiation. */
+    uint16_t                      start_on_notify_cccd_handle;      /**< If procedure is to be started when notification is started, set this to the handle of the corresponding CCCD. Set to BLE_GATT_HANDLE_INVALID if procedure is to be started on connect event. */
+    bool                          disconnect_on_fail;               /**< Set to TRUE if a failed connection parameters update shall cause an automatic disconnection, set to FALSE otherwise. */
+    ble_conn_params_evt_handler_t evt_handler;                      /**< Event handler to be called for handling events in the Battery Service. */
+    ble_srv_error_handler_t       error_handler;                    /**< Function to be called in case of an error. */
+} ble_conn_params_init_t;
+
+
+/**@brief Function for initializing the Connection Parameters module.
+ *
+ * @note If the negotiation procedure should be triggered when notification/indication of 
+ *       any characteristic is enabled by the peer, then this function must be called after
+ *       having initialized the services.
+ *
+ * @param[in]   p_init  This contains information needed to initialize this module.
+ *
+ * @return      NRF_SUCCESS on successful initialization, otherwise an error code.
+ */
+uint32_t ble_conn_params_init(const ble_conn_params_init_t * p_init);
+
+/**@brief Function for stopping the Connection Parameters module.
+ *
+ * @details This function is intended to be used by the application to clean up the connection
+ *          parameters update module. This will stop the connection parameters update timer if
+ *          running, thereby preventing any impending connection parameters update procedure. This
+ *          function must be called by the application when it needs to clean itself up (for
+ *          example, before disabling the bluetooth SoftDevice) so that an unwanted timer expiry
+ *          event can be avoided.
+ *
+ * @return      NRF_SUCCESS on successful initialization, otherwise an error code.
+ */
+uint32_t ble_conn_params_stop(void);
+
+/**@brief Function for changing the current connection parameters to a new set.
+ *
+ *  @details Use this function to change the connection parameters to a new set of parameter 
+ *       (ie different from the ones given at init of the module).
+ *       This function is usefull for scenario where most of the time the application
+ *       needs a relatively big connection interval, and just sometimes, for a temporary
+ *       period requires shorter connection interval, for example to transfer a higher
+ *       amount of data.
+ *       If the given parameters does not match the current connection's parameters
+ *       this function initiates a new negotiation.
+ *
+ * @param[in]   new_params  This contains the new connections parameters to setup.
+ *
+ * @return      NRF_SUCCESS on successful initialization, otherwise an error code.
+ */
+uint32_t ble_conn_params_change_conn_params(ble_gap_conn_params_t *new_params);
+
+/**@brief Function for handling the Application's BLE Stack events.
+ *
+ * @details Handles all events from the BLE stack that are of interest to this module.
+ *
+ * @param[in]   p_ble_evt  The event received from the BLE stack.
+ */
+void ble_conn_params_on_ble_evt(ble_evt_t * p_ble_evt);
+
+#endif // BLE_CONN_PARAMS_H__
+
+/** @} */