1 /* 2 * Copyright (c) 2024 Croxel, Inc. 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #ifndef ZEPHYR_INCLUDE_BLUETOOTH_SERVICES_NUS_INST_H_ 8 #define ZEPHYR_INCLUDE_BLUETOOTH_SERVICES_NUS_INST_H_ 9 10 #include <zephyr/bluetooth/gatt.h> 11 #include <zephyr/sys/iterable_sections.h> 12 #include <zephyr/sys/slist.h> 13 14 #ifdef __cplusplus 15 extern "C" { 16 #endif 17 18 struct bt_nus_inst { 19 /** Pointer to the NUS Service Instance */ 20 const struct bt_gatt_service_static *svc; 21 22 /** List of subscribers to invoke callbacks on asynchronous events */ 23 sys_slist_t *cbs; 24 }; 25 26 #define BT_UUID_NUS_SERVICE BT_UUID_DECLARE_128(BT_UUID_NUS_SRV_VAL) 27 #define BT_UUID_NUS_TX_CHAR BT_UUID_DECLARE_128(BT_UUID_NUS_TX_CHAR_VAL) 28 #define BT_UUID_NUS_RX_CHAR BT_UUID_DECLARE_128(BT_UUID_NUS_RX_CHAR_VAL) 29 30 /** Required as the service may be instantiated outside of the module */ 31 ssize_t nus_bt_chr_write(struct bt_conn *conn, const struct bt_gatt_attr *attr, 32 const void *buf, uint16_t len, uint16_t offset, uint8_t flags); 33 void nus_ccc_cfg_changed(const struct bt_gatt_attr *attr, uint16_t value); 34 35 #define Z_INTERNAL_BT_NUS_INST_DEFINE(_name) \ 36 \ 37 BT_GATT_SERVICE_DEFINE(_name##_svc, \ 38 BT_GATT_PRIMARY_SERVICE(BT_UUID_NUS_SERVICE), \ 39 BT_GATT_CHARACTERISTIC(BT_UUID_NUS_TX_CHAR, \ 40 BT_GATT_CHRC_NOTIFY, \ 41 BT_GATT_PERM_NONE, \ 42 NULL, NULL, NULL), \ 43 BT_GATT_CCC(nus_ccc_cfg_changed, \ 44 BT_GATT_PERM_READ | BT_GATT_PERM_WRITE), \ 45 BT_GATT_CHARACTERISTIC(BT_UUID_NUS_RX_CHAR, \ 46 BT_GATT_CHRC_WRITE | \ 47 BT_GATT_CHRC_WRITE_WITHOUT_RESP, \ 48 BT_GATT_PERM_WRITE, \ 49 NULL, nus_bt_chr_write, NULL), \ 50 ); \ 51 \ 52 sys_slist_t _name##_cbs = SYS_SLIST_STATIC_INIT(&_name##_cbs); \ 53 \ 54 STRUCT_SECTION_ITERABLE(bt_nus_inst, _name) = { \ 55 .svc = &_name##_svc, \ 56 .cbs = &_name##_cbs, \ 57 } 58 59 #ifdef __cplusplus 60 } 61 #endif 62 63 #endif /* ZEPHYR_INCLUDE_BLUETOOTH_SERVICES_NUS_INST_H_ */ 64
