nordic 52832添加HID服务实现手机蓝牙自拍杆功能 附遇到的问题和解决方法 |
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此教程基于SD 2.0 原理：添加HID服务模拟外设滑鼠给手机发送音量加或减实现控制相机拍照，参照SDK工程->ble_app_hids_mouse 需要添加的功能 1.HID服务 2.设备管理机制DM 3.储存设备信息pstorage 流程 1.蓝牙初始化内添加device_manager_init(0);参数0代表保存以往连接设备，方便自动连接 void device_manager_init(bool erase_bonds) { uint32_t err_code; dm_init_param_t init_param = {.clear_persistent_data = erase_bonds}; dm_application_param_t register_param; // Initialize peer device handle. err_code = dm_handle_initialize(&m_bonded_peer_handle); APP_ERROR_CHECK(err_code); // Initialize persistent storage module. err_code = pstorage_init(); APP_ERROR_CHECK(err_code); err_code = dm_init(&init_param); APP_ERROR_CHECK(err_code); memset(®ister_param.sec_param, 0, sizeof(ble_gap_sec_params_t)); register_param.sec_param.bond = SEC_PARAM_BOND; register_param.sec_param.mitm = SEC_PARAM_MITM; register_param.sec_param.lesc = SEC_PARAM_LESC; register_param.sec_param.keypress = SEC_PARAM_KEYPRESS; register_param.sec_param.io_caps = SEC_PARAM_IO_CAPABILITIES; register_param.sec_param.oob = SEC_PARAM_OOB; register_param.sec_param.min_key_size = SEC_PARAM_MIN_KEY_SIZE; register_param.sec_param.max_key_size = SEC_PARAM_MAX_KEY_SIZE; register_param.evt_handler = device_manager_evt_handler; register_param.service_type = DM_PROTOCOL_CNTXT_GATT_SRVR_ID; err_code = dm_register(&m_app_handle, ®ister_param); APP_ERROR_CHECK(err_code); }2.services_init（）内增加HID服务hids_init(); void hids_init(void) { uint32_t err_code; ble_hids_init_t hids_init_obj; ble_hids_inp_rep_init_t inp_rep_array[INPUT_REPORT_COUNT]; ble_hids_inp_rep_init_t * p_input_report; uint8_t hid_info_flags; static uint8_t rep_map_data[] = { 0x05, 0x01, // Usage Page (Generic Desktop) 0x09, 0x02, // Usage (Mouse) 0xA1, 0x01, // Collection (Application) // Report ID 1: Mouse buttons + scroll/pan 0x85, 0x01, // Report Id 1 0x09, 0x01, // Usage (Pointer) 0xA1, 0x00, // Collection (Physical) 0x95, 0x05, // Report Count (3) 0x75, 0x01, // Report Size (1) 0x05, 0x09, // Usage Page (Buttons) 0x19, 0x01, // Usage Minimum (01) 0x29, 0x05, // Usage Maximum (05) 0x15, 0x00, // Logical Minimum (0) 0x25, 0x01, // Logical Maximum (1) 0x81, 0x02, // Input (Data, Variable, Absolute) 0x95, 0x01, // Report Count (1) 0x75, 0x03, // Report Size (3) 0x81, 0x01, // Input (Constant) for padding 0x75, 0x08, // Report Size (8) 0x95, 0x01, // Report Count (1) 0x05, 0x01, // Usage Page (Generic Desktop) 0x09, 0x38, // Usage (Wheel) 0x15, 0x81, // Logical Minimum (-127) 0x25, 0x7F, // Logical Maximum (127) 0x81, 0x06, // Input (Data, Variable, Relative) 0x05, 0x0C, // Usage Page (Consumer) 0x0A, 0x38, 0x02, // Usage (AC Pan) 0x95, 0x01, // Report Count (1) 0x81, 0x06, // Input (Data,Value,Relative,Bit Field) 0xC0, // End Collection (Physical) // Report ID 2: Mouse motion 0x85, 0x02, // Report Id 2 0x09, 0x01, // Usage (Pointer) 0xA1, 0x00, // Collection (Physical) 0x75, 0x0C, // Report Size (12) 0x95, 0x02, // Report Count (2) 0x05, 0x01, // Usage Page (Generic Desktop) 0x09, 0x30, // Usage (X) 0x09, 0x31, // Usage (Y) 0x16, 0x01, 0xF8, // Logical maximum (2047) 0x26, 0xFF, 0x07, // Logical minimum (-2047) 0x81, 0x06, // Input (Data, Variable, Relative) 0xC0, // End Collection (Physical) 0xC0, // End Collection (Application) // Report ID 3: Advanced buttons 0x05, 0x0C, // Usage Page (Consumer) 0x09, 0x01, // Usage (Consumer Control) 0xA1, 0x01, // Collection (Application) 0x85, 0x03, // Report Id (3) 0x15, 0x00, // Logical minimum (0) 0x25, 0x01, // Logical maximum (1) 0x75, 0x01, // Report Size (1) 0x95, 0x01, // Report Count (1) 0x09, 0xCD, // Usage (Play/Pause) 0x81, 0x06, // Input (Data,Value,Relative,Bit Field) 0x0A, 0x83, 0x01, // Usage (AL Consumer Control Configuration) 0x81, 0x06, // Input (Data,Value,Relative,Bit Field) 0x09, 0xB5, // Usage (Scan Next Track) 0x81, 0x06, // Input (Data,Value,Relative,Bit Field) 0x09, 0xB6, // Usage (Scan Previous Track) 0x81, 0x06, // Input (Data,Value,Relative,Bit Field) 0x09, 0xEA, // Usage (Volume Down) 0x81, 0x06, // Input (Data,Value,Relative,Bit Field) 0x09, 0xE9, // Usage (Volume Up) 0x81, 0x06, // Input (Data,Value,Relative,Bit Field) 0x0A, 0x25, 0x02, // Usage (AC Forward) 0x81, 0x06, // Input (Data,Value,Relative,Bit Field) 0x0A, 0x24, 0x02, // Usage (AC Back) 0x81, 0x06, // Input (Data,Value,Relative,Bit Field) 0xC0 // End Collection }; memset(inp_rep_array, 0, sizeof(inp_rep_array)); // Initialize HID Service. p_input_report = &inp_rep_array[INPUT_REP_BUTTONS_INDEX]; p_input_report->max_len = INPUT_REP_BUTTONS_LEN; p_input_report->rep_ref.report_id = INPUT_REP_REF_BUTTONS_ID; p_input_report->rep_ref.report_type = BLE_HIDS_REP_TYPE_INPUT; BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.cccd_write_perm); BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.read_perm); BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.write_perm); p_input_report = &inp_rep_array[INPUT_REP_MOVEMENT_INDEX]; p_input_report->max_len = INPUT_REP_MOVEMENT_LEN; p_input_report->rep_ref.report_id = INPUT_REP_REF_MOVEMENT_ID; p_input_report->rep_ref.report_type = BLE_HIDS_REP_TYPE_INPUT; BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.cccd_write_perm); BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.read_perm); BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.write_perm); p_input_report = &inp_rep_array[INPUT_REP_MPLAYER_INDEX]; p_input_report->max_len = INPUT_REP_MEDIA_PLAYER_LEN; p_input_report->rep_ref.report_id = INPUT_REP_REF_MPLAYER_ID; p_input_report->rep_ref.report_type = BLE_HIDS_REP_TYPE_INPUT; BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.cccd_write_perm); BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.read_perm); BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&p_input_report->security_mode.write_perm); hid_info_flags = HID_INFO_FLAG_REMOTE_WAKE_MSK | HID_INFO_FLAG_NORMALLY_CONNECTABLE_MSK; memset(&hids_init_obj, 0, sizeof(hids_init_obj)); hids_init_obj.evt_handler = on_hids_evt; hids_init_obj.error_handler = NULL; hids_init_obj.is_kb = false; hids_init_obj.is_mouse = true; hids_init_obj.inp_rep_count = INPUT_REPORT_COUNT; hids_init_obj.p_inp_rep_array = inp_rep_array; hids_init_obj.outp_rep_count = 0; hids_init_obj.p_outp_rep_array = NULL; hids_init_obj.feature_rep_count = 0; hids_init_obj.p_feature_rep_array = NULL; hids_init_obj.rep_map.data_len = sizeof(rep_map_data); hids_init_obj.rep_map.p_data = rep_map_data; hids_init_obj.hid_information.bcd_hid = BASE_USB_HID_SPEC_VERSION; hids_init_obj.hid_information.b_country_code = 0; hids_init_obj.hid_information.flags = hid_info_flags; hids_init_obj.included_services_count = 0; hids_init_obj.p_included_services_array = NULL; BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&hids_init_obj.rep_map.security_mode.read_perm); BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&hids_init_obj.rep_map.security_mode.write_perm); BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&hids_init_obj.hid_information.security_mode.read_perm); BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&hids_init_obj.hid_information.security_mode.write_perm); BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM( &hids_init_obj.security_mode_boot_mouse_inp_rep.cccd_write_perm); BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM( &hids_init_obj.security_mode_boot_mouse_inp_rep.read_perm); BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM( &hids_init_obj.security_mode_boot_mouse_inp_rep.write_perm); BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&hids_init_obj.security_mode_protocol.read_perm); BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&hids_init_obj.security_mode_protocol.write_perm); BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&hids_init_obj.security_mode_ctrl_point.read_perm); BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&hids_init_obj.security_mode_ctrl_point.write_perm); err_code = ble_hids_init(&m_hids, &hids_init_obj); APP_ERROR_CHECK(err_code); }3.ble_evt_dispatch内添加 dm_ble_evt_handler(p_ble_evt); ble_hids_on_ble_evt(&m_hids, p_ble_evt);4.sys_evt_dispatch内添加 pstorage_sys_event_handler(sys_evt);5.添加UUID static ble_uuid_t m_adv_uuids[] = {{BLE_UUID_HUMAN_INTERFACE_DEVICE_SERVICE, BLE_UUID_TYPE_BLE} };6.增加发送音量函数 void media_player_control(uint8_t control) { uint32_t err_code; uint8_t buffer[1]; buffer[0] = control; err_code = ble_hids_inp_rep_send( &m_hids, INPUT_REP_MPLAYER_INDEX, 1, buffer ); if(( err_code != NRF_SUCCESS ) && ( err_code != NRF_ERROR_INVALID_STATE ) && ( err_code != BLE_ERROR_NO_TX_PACKETS ) && ( err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING )) { NRF_LOG_PRINTF("-step1error-"); APP_ERROR_HANDLER( err_code ); } buffer[0] = 0; err_code = ble_hids_inp_rep_send( &m_hids, INPUT_REP_MPLAYER_INDEX, 1, buffer ); if(( err_code != NRF_SUCCESS ) && ( err_code != NRF_ERROR_INVALID_STATE ) && ( err_code != BLE_ERROR_NO_TX_PACKETS ) && ( err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING )) { NRF_LOG_PRINTF("-step-2-error-\r\n"); APP_ERROR_HANDLER( err_code ); } }这里兼容IOS和Android，触发了2次发送 7.device_manager_cnfg.h修改CCCD连接数 #define DM_GATT_CCCD_COUNT 68.可能的问题和解决方法
1.连接了一台设备，断开他后其他设备搜不到设备的广播。 办法：device_manager_init(0);DEVICE_MANAGER_MAX_CONNECTIONS改大；DEVICE_MANAGER_MAX_BONDS改大。 2.手机系统拒绝配对。 办法：on_ble_evt函数内将BLE_GAP_EVT_SEC_PARAMS_REQUEST下的内容全部注释掉 3.每次正常使用都需要重新配对。 办法：CCCD设置太少，DM_GATT_CCCD_COUNT改大 4.程序下到板子后一直重启。办法： 1.注意SOFTDEVICE_HANDLER_INIT(&clock_lf_cfg, NULL);是否多次使用 2.步骤5.添加UUID时注意内容，有时候添加多个UUID会死机 3.注意gap_params_init();设置 4.services_init();和advertising_init();的先后顺序 感谢这些哥们： https://blog.csdn.net/sinat_20059415/article/details/80777813 https://blog.csdn.net/pig10086/article/details/72402066 https://blog.csdn.net/everestzhang/article/details/47165417 https://blog.csdn.net/gyb510/article/details/70188616 https://blog.csdn.net/weixin_40204595/article/details/81179361
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