nochanges
Dependents: BLE_Acceleration_Statejudging
Fork of nRF51822 by
nordic/nrf-sdk/ble/ble_services/ble_hrs.h
- Committer:
- Rohit Grover
- Date:
- 2014-07-07
- Revision:
- 37:c29c330d942c
File content as of revision 37:c29c330d942c:
/* 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_srv_hrs Heart Rate Service * @{ * @ingroup ble_sdk_srv * @brief Heart Rate Service module. * * @details This module implements the Heart Rate Service with the Heart Rate Measurement, * Body Sensor Location and Heart Rate Control Point characteristics. * During initialization it adds the Heart Rate Service and Heart Rate Measurement * characteristic to the BLE stack database. Optionally it also adds the * Body Sensor Location and Heart Rate Control Point characteristics. * * If enabled, notification of the Heart Rate Measurement characteristic is performed * when the application calls ble_hrs_heart_rate_measurement_send(). * * The Heart Rate Service also provides a set of functions for manipulating the * various fields in the Heart Rate Measurement characteristic, as well as setting * the Body Sensor Location characteristic value. * * If an event handler is supplied by the application, the Heart Rate Service will * generate Heart Rate Service events to the application. * * @note The application must propagate BLE stack events to the Heart Rate Service module by calling * ble_hrs_on_ble_evt() from the from the @ref ble_stack_handler callback. * * @note Attention! * To maintain compliance with Nordic Semiconductor ASA Bluetooth profile * qualification listings, this section of source code must not be modified. */ #ifndef BLE_HRS_H__ #define BLE_HRS_H__ #include <stdint.h> #include <stdbool.h> #include "ble.h" #include "ble_srv_common.h" // Body Sensor Location values #define BLE_HRS_BODY_SENSOR_LOCATION_OTHER 0 #define BLE_HRS_BODY_SENSOR_LOCATION_CHEST 1 #define BLE_HRS_BODY_SENSOR_LOCATION_WRIST 2 #define BLE_HRS_BODY_SENSOR_LOCATION_FINGER 3 #define BLE_HRS_BODY_SENSOR_LOCATION_HAND 4 #define BLE_HRS_BODY_SENSOR_LOCATION_EAR_LOBE 5 #define BLE_HRS_BODY_SENSOR_LOCATION_FOOT 6 #define BLE_HRS_MAX_BUFFERED_RR_INTERVALS 20 /**< Size of RR Interval buffer inside service. */ /**@brief Heart Rate Service event type. */ typedef enum { BLE_HRS_EVT_NOTIFICATION_ENABLED, /**< Heart Rate value notification enabled event. */ BLE_HRS_EVT_NOTIFICATION_DISABLED /**< Heart Rate value notification disabled event. */ } ble_hrs_evt_type_t; /**@brief Heart Rate Service event. */ typedef struct { ble_hrs_evt_type_t evt_type; /**< Type of event. */ } ble_hrs_evt_t; // Forward declaration of the ble_hrs_t type. typedef struct ble_hrs_s ble_hrs_t; /**@brief Heart Rate Service event handler type. */ typedef void (*ble_hrs_evt_handler_t) (ble_hrs_t * p_hrs, ble_hrs_evt_t * p_evt); /**@brief Heart Rate Service init structure. This contains all options and data needed for * initialization of the service. */ typedef struct { ble_hrs_evt_handler_t evt_handler; /**< Event handler to be called for handling events in the Heart Rate Service. */ bool is_sensor_contact_supported; /**< Determines if sensor contact detection is to be supported. */ uint8_t * p_body_sensor_location; /**< If not NULL, initial value of the Body Sensor Location characteristic. */ ble_srv_cccd_security_mode_t hrs_hrm_attr_md; /**< Initial security level for heart rate service measurement attribute */ ble_srv_security_mode_t hrs_bsl_attr_md; /**< Initial security level for body sensor location attribute */ } ble_hrs_init_t; /**@brief Heart Rate Service structure. This contains various status information for the service. */ typedef struct ble_hrs_s { ble_hrs_evt_handler_t evt_handler; /**< Event handler to be called for handling events in the Heart Rate Service. */ bool is_expended_energy_supported; /**< TRUE if Expended Energy measurement is supported. */ bool is_sensor_contact_supported; /**< TRUE if sensor contact detection is supported. */ uint16_t service_handle; /**< Handle of Heart Rate Service (as provided by the BLE stack). */ ble_gatts_char_handles_t hrm_handles; /**< Handles related to the Heart Rate Measurement characteristic. */ ble_gatts_char_handles_t bsl_handles; /**< Handles related to the Body Sensor Location characteristic. */ ble_gatts_char_handles_t hrcp_handles; /**< Handles related to the Heart Rate Control Point characteristic. */ uint16_t conn_handle; /**< Handle of the current connection (as provided by the BLE stack, is BLE_CONN_HANDLE_INVALID if not in a connection). */ bool is_sensor_contact_detected; /**< TRUE if sensor contact has been detected. */ uint16_t rr_interval[BLE_HRS_MAX_BUFFERED_RR_INTERVALS]; /**< Set of RR Interval measurements since the last Heart Rate Measurement transmission. */ uint16_t rr_interval_count; /**< Number of RR Interval measurements since the last Heart Rate Measurement transmission. */ } ble_hrs_t; /**@brief Function for initializing the Heart Rate Service. * * @param[out] p_hrs Heart Rate Service structure. This structure will have to be supplied by * the application. It will be initialized by this function, and will later * be used to identify this particular service instance. * @param[in] p_hrs_init Information needed to initialize the service. * * @return NRF_SUCCESS on successful initialization of service, otherwise an error code. */ uint32_t ble_hrs_init(ble_hrs_t * p_hrs, const ble_hrs_init_t * p_hrs_init); /**@brief Function for handling the Application's BLE Stack events. * * @details Handles all events from the BLE stack of interest to the Heart Rate Service. * * @param[in] p_hrs Heart Rate Service structure. * @param[in] p_ble_evt Event received from the BLE stack. */ void ble_hrs_on_ble_evt(ble_hrs_t * p_hrs, ble_evt_t * p_ble_evt); /**@brief Function for sending heart rate measurement if notification has been enabled. * * @details The application calls this function after having performed a heart rate measurement. * If notification has been enabled, the heart rate measurement data is encoded and sent to * the client. * * @param[in] p_hrs Heart Rate Service structure. * @param[in] heart_rate New heart rate measurement. * @param[in] include_expended_energy Determines if expended energy will be included in the * heart rate measurement data. * * @return NRF_SUCCESS on success, otherwise an error code. */ uint32_t ble_hrs_heart_rate_measurement_send(ble_hrs_t * p_hrs, uint16_t heart_rate); /**@brief Function for adding a RR Interval measurement to the RR Interval buffer. * * @details All buffered RR Interval measurements will be included in the next heart rate * measurement message, up to the maximum number of measurements that will fit into the * message. If the buffer is full, the oldest measurement in the buffer will be deleted. * * @param[in] p_hrs Heart Rate Service structure. * @param[in] rr_interval New RR Interval measurement (will be buffered until the next * transmission of Heart Rate Measurement). */ void ble_hrs_rr_interval_add(ble_hrs_t * p_hrs, uint16_t rr_interval); /**@brief Function for checking if RR Interval buffer is full. * * @param[in] p_hrs Heart Rate Service structure. * * @return true if RR Interval buffer is full, false otherwise. */ bool ble_hrs_rr_interval_buffer_is_full(ble_hrs_t * p_hrs); /**@brief Function for setting the state of the Sensor Contact Supported bit. * * @param[in] p_hrs Heart Rate Service structure. * @param[in] is_sensor_contact_supported New state of the Sensor Contact Supported bit. * * @return NRF_SUCCESS on success, otherwise an error code. */ uint32_t ble_hrs_sensor_contact_supported_set(ble_hrs_t * p_hrs, bool is_sensor_contact_supported); /**@brief Function for setting the state of the Sensor Contact Detected bit. * * @param[in] p_hrs Heart Rate Service structure. * @param[in] is_sensor_contact_detected TRUE if sensor contact is detected, FALSE otherwise. */ void ble_hrs_sensor_contact_detected_update(ble_hrs_t * p_hrs, bool is_sensor_contact_detected); /**@brief Function for setting the Body Sensor Location. * * @details Sets a new value of the Body Sensor Location characteristic. The new value will be sent * to the client the next time the client reads the Body Sensor Location characteristic. * * @param[in] p_hrs Heart Rate Service structure. * @param[in] body_sensor_location New Body Sensor Location. * * @return NRF_SUCCESS on success, otherwise an error code. */ uint32_t ble_hrs_body_sensor_location_set(ble_hrs_t * p_hrs, uint8_t body_sensor_location); #endif // BLE_HRS_H__ /** @} */