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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_nus/ble_nus.h')
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diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_nus/ble_nus.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_nus/ble_nus.h new file mode 100644 index 0000000..5f17ac8 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_nus/ble_nus.h @@ -0,0 +1,244 @@ + /** + * Copyright (c) 2012 - 2018, Nordic Semiconductor ASA + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, must reproduce the above copyright notice, this list of + * conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * 3. Neither the name of Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +/**@file + * + * @defgroup ble_nus Nordic UART Service + * @{ + * @ingroup ble_sdk_srv + * @brief Nordic UART Service implementation. + * + * @details The Nordic UART Service is a simple GATT-based service with TX and RX characteristics. + * Data received from the peer is passed to the application, and the data received + * from the application of this service is sent to the peer as Handle Value + * Notifications. This module demonstrates how to implement a custom GATT-based + * service and characteristics using the SoftDevice. The service + * is used by the application to send and receive ASCII text strings to and from the + * peer. + * + * @note The application must register this module as BLE event observer using the + * NRF_SDH_BLE_OBSERVER macro. Example: + * @code + * ble_nus_t instance; + * NRF_SDH_BLE_OBSERVER(anything, BLE_NUS_BLE_OBSERVER_PRIO, + * ble_nus_on_ble_evt, &instance); + * @endcode + */ +#ifndef BLE_NUS_H__ +#define BLE_NUS_H__ + +#include <stdint.h> +#include <stdbool.h> +#include "sdk_config.h" +#include "ble.h" +#include "ble_srv_common.h" +#include "nrf_sdh_ble.h" +#include "ble_link_ctx_manager.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/**@brief Macro for defining a ble_nus instance. + * + * @param _name Name of the instance. + * @param[in] _nus_max_clients Maximum number of NUS clients connected at a time. + * @hideinitializer + */ +#define BLE_NUS_DEF(_name, _nus_max_clients) \ + BLE_LINK_CTX_MANAGER_DEF(CONCAT_2(_name, _link_ctx_storage), \ + (_nus_max_clients), \ + sizeof(ble_nus_client_context_t)); \ + static ble_nus_t _name = \ + { \ + .p_link_ctx_storage = &CONCAT_2(_name, _link_ctx_storage) \ + }; \ + NRF_SDH_BLE_OBSERVER(_name ## _obs, \ + BLE_NUS_BLE_OBSERVER_PRIO, \ + ble_nus_on_ble_evt, \ + &_name) + +#define BLE_UUID_NUS_SERVICE 0x0001 /**< The UUID of the Nordic UART Service. */ + +#define OPCODE_LENGTH 1 +#define HANDLE_LENGTH 2 + +/**@brief Maximum length of data (in bytes) that can be transmitted to the peer by the Nordic UART service module. */ +#if defined(NRF_SDH_BLE_GATT_MAX_MTU_SIZE) && (NRF_SDH_BLE_GATT_MAX_MTU_SIZE != 0) + #define BLE_NUS_MAX_DATA_LEN (NRF_SDH_BLE_GATT_MAX_MTU_SIZE - OPCODE_LENGTH - HANDLE_LENGTH) +#else + #define BLE_NUS_MAX_DATA_LEN (BLE_GATT_MTU_SIZE_DEFAULT - OPCODE_LENGTH - HANDLE_LENGTH) + #warning NRF_SDH_BLE_GATT_MAX_MTU_SIZE is not defined. +#endif + + +/**@brief Nordic UART Service event types. */ +typedef enum +{ + BLE_NUS_EVT_RX_DATA, /**< Data received. */ + BLE_NUS_EVT_TX_RDY, /**< Service is ready to accept new data to be transmitted. */ + BLE_NUS_EVT_COMM_STARTED, /**< Notification has been enabled. */ + BLE_NUS_EVT_COMM_STOPPED, /**< Notification has been disabled. */ +} ble_nus_evt_type_t; + + +/* Forward declaration of the ble_nus_t type. */ +typedef struct ble_nus_s ble_nus_t; + + +/**@brief Nordic UART Service @ref BLE_NUS_EVT_RX_DATA event data. + * + * @details This structure is passed to an event when @ref BLE_NUS_EVT_RX_DATA occurs. + */ +typedef struct +{ + uint8_t const * p_data; /**< A pointer to the buffer with received data. */ + uint16_t length; /**< Length of received data. */ +} ble_nus_evt_rx_data_t; + + +/**@brief Nordic UART Service client context structure. + * + * @details This structure contains state context related to hosts. + */ +typedef struct +{ + bool is_notification_enabled; /**< Variable to indicate if the peer has enabled notification of the RX characteristic.*/ +} ble_nus_client_context_t; + + +/**@brief Nordic UART Service event structure. + * + * @details This structure is passed to an event coming from service. + */ +typedef struct +{ + ble_nus_evt_type_t type; /**< Event type. */ + ble_nus_t * p_nus; /**< A pointer to the instance. */ + uint16_t conn_handle; /**< Connection handle. */ + ble_nus_client_context_t * p_link_ctx; /**< A pointer to the link context. */ + union + { + ble_nus_evt_rx_data_t rx_data; /**< @ref BLE_NUS_EVT_RX_DATA event data. */ + } params; +} ble_nus_evt_t; + + +/**@brief Nordic UART Service event handler type. */ +typedef void (* ble_nus_data_handler_t) (ble_nus_evt_t * p_evt); + + +/**@brief Nordic UART Service initialization structure. + * + * @details This structure contains the initialization information for the service. The application + * must fill this structure and pass it to the service using the @ref ble_nus_init + * function. + */ +typedef struct +{ + ble_nus_data_handler_t data_handler; /**< Event handler to be called for handling received data. */ +} ble_nus_init_t; + + +/**@brief Nordic UART Service structure. + * + * @details This structure contains status information related to the service. + */ +struct ble_nus_s +{ + uint8_t uuid_type; /**< UUID type for Nordic UART Service Base UUID. */ + uint16_t service_handle; /**< Handle of Nordic UART Service (as provided by the SoftDevice). */ + ble_gatts_char_handles_t tx_handles; /**< Handles related to the TX characteristic (as provided by the SoftDevice). */ + ble_gatts_char_handles_t rx_handles; /**< Handles related to the RX characteristic (as provided by the SoftDevice). */ + blcm_link_ctx_storage_t * const p_link_ctx_storage; /**< Pointer to link context storage with handles of all current connections and its context. */ + ble_nus_data_handler_t data_handler; /**< Event handler to be called for handling received data. */ +}; + + +/**@brief Function for initializing the Nordic UART Service. + * + * @param[out] p_nus Nordic UART Service structure. This structure must be supplied + * by the application. It is initialized by this function and will + * later be used to identify this particular service instance. + * @param[in] p_nus_init Information needed to initialize the service. + * + * @retval NRF_SUCCESS If the service was successfully initialized. Otherwise, an error code is returned. + * @retval NRF_ERROR_NULL If either of the pointers p_nus or p_nus_init is NULL. + */ +uint32_t ble_nus_init(ble_nus_t * p_nus, ble_nus_init_t const * p_nus_init); + + +/**@brief Function for handling the Nordic UART Service's BLE events. + * + * @details The Nordic UART Service expects the application to call this function each time an + * event is received from the SoftDevice. This function processes the event if it + * is relevant and calls the Nordic UART Service event handler of the + * application if necessary. + * + * @param[in] p_ble_evt Event received from the SoftDevice. + * @param[in] p_context Nordic UART Service structure. + */ +void ble_nus_on_ble_evt(ble_evt_t const * p_ble_evt, void * p_context); + + +/**@brief Function for sending a data to the peer. + * + * @details This function sends the input string as an RX characteristic notification to the + * peer. + * + * @param[in] p_nus Pointer to the Nordic UART Service structure. + * @param[in] p_data String to be sent. + * @param[in,out] p_length Pointer Length of the string. Amount of sent bytes. + * @param[in] conn_handle Connection Handle of the destination client. + * + * @retval NRF_SUCCESS If the string was sent successfully. Otherwise, an error code is returned. + */ +uint32_t ble_nus_data_send(ble_nus_t * p_nus, + uint8_t * p_data, + uint16_t * p_length, + uint16_t conn_handle); + + +#ifdef __cplusplus +} +#endif + +#endif // BLE_NUS_H__ + +/** @} */ |