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Initial commit: MT firmware project

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- BLE peripheral applications
- dr_piezo and bladder_patch projects

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Charles Kwon
2026-01-25 17:26:39 +09:00
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components/ble/ble_services/ble_nus/ble_nus.h Normal file
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/**
* Copyright (c) 2012 - 2021, 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__
/** @} */