ble_lbs.h

/*
 * Copyright (c) 2013 - 2025 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */
#ifndef BLE_LBS_H__
#define BLE_LBS_H__
 
#include <stdint.h>
#include <ble.h>
#include <bm/bluetooth/ble_common.h>
#include <bm/softdevice_handler/nrf_sdh_ble.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define BLE_UUID_LBS_BASE       { 0x23, 0xD1, 0xBC, 0xEA, 0x5F, 0x78, 0x23, 0x15,                  \
                                  0xDE, 0xEF, 0x12, 0x12, 0x00, 0x00, 0x00, 0x00 }
#define BLE_UUID_LBS_SERVICE     0x1523
#define BLE_UUID_LBS_BUTTON_CHAR 0x1524
#define BLE_UUID_LBS_LED_CHAR    0x1525
 
/* Forward declaration */
struct ble_lbs;
 
#define BLE_LBS_DEF(_name)                                                                         \
        static struct ble_lbs _name;                                                               \
        NRF_SDH_BLE_OBSERVER(_name##_obs, ble_lbs_on_ble_evt, &_name, HIGH)
 
#define BLE_LBS_CONFIG_SEC_MODE_DEFAULT                                                            \
        {                                                                                          \
                .lbs_button_char = {                                                               \
                        .read = BLE_GAP_CONN_SEC_MODE_OPEN,                                        \
                        .cccd_write = BLE_GAP_CONN_SEC_MODE_OPEN,                                  \
                },                                                                                 \
                .lbs_led_char = {                                                                  \
                        .read = BLE_GAP_CONN_SEC_MODE_OPEN,                                        \
                        .write = BLE_GAP_CONN_SEC_MODE_OPEN,                                       \
                },                                                                                 \
        }
 
enum ble_lbs_evt_type {
        BLE_LBS_EVT_LED_WRITE,
        BLE_LBS_EVT_ERROR,
};
 
struct ble_lbs_evt {
        enum ble_lbs_evt_type evt_type;
        uint16_t conn_handle;
        union {
                struct {
                        uint8_t value;
                } led_write;
                struct {
                        uint32_t reason;
                } error;
        };
};
 
typedef void (*lbs_evt_handler_t)(struct ble_lbs *lbs, const struct ble_lbs_evt *lbs_evt);
 
struct ble_lbs_config {
        lbs_evt_handler_t evt_handler;
        struct {
                struct {
                        ble_gap_conn_sec_mode_t read;
                        ble_gap_conn_sec_mode_t cccd_write;
                } lbs_button_char;
                struct {
                        ble_gap_conn_sec_mode_t read;
                        ble_gap_conn_sec_mode_t write;
                } lbs_led_char;
        } sec_mode;
};
 
struct ble_lbs {
        uint16_t service_handle;
        ble_gatts_char_handles_t led_char_handles;
        ble_gatts_char_handles_t button_char_handles;
        uint8_t uuid_type;
        lbs_evt_handler_t evt_handler;
};
 
uint32_t ble_lbs_init(struct ble_lbs *lbs, const struct ble_lbs_config *cfg);
 
void ble_lbs_on_ble_evt(const ble_evt_t *ble_evt, void *ble_lbs);
 
uint32_t ble_lbs_on_button_change(struct ble_lbs *lbs, uint16_t conn_handle, uint8_t button_state);
 
#ifdef __cplusplus
}
#endif
 
#endif /* BLE_LBS_H__ */