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77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
// Copyright 2020 Lukas Haubaum
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//
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// Licensed under the GNU Affero General Public License, Version 3;
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// https://www.gnu.org/licenses/agpl-3.0.html
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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* @file
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*
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* @brief BLE scans for detecting other beacons
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*
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*/
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#ifndef _ena_BLUETOOTH_SCAN_H_
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#define _ena_BLUETOOTH_SCAN_H_
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#define ENA_SCAN_LOG "ESP-ENA-scan" // TAG for Logging
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#define ENA_SCANNING_TIME (CONFIG_ENA_SCANNING_TIME) // time how long a scan should run
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#define ENA_SCANNING_INTERVAL (CONFIG_ENA_SCANNING_INTERVAL) // interval for next scan to happen
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/**
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* @brief status of BLE scan
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*/
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typedef enum
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{
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ENA_SCAN_STATUS_SCANNING = 0, // scan is running
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ENA_SCAN_STATUS_NOT_SCANNING, // scan is not running
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ENA_SCAN_STATUS_WAITING, // scan is not running but stopped manually
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} ena_bluetooth_scan_status;
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/**
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* @brief initialize the BLE scanning
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*
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*/
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void ena_bluetooth_scan_init(void);
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/**
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* @brief start BLE scanning for a given duration
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*
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* Source documents (Section: Scanning Behavior)
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*
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* https://blog.google/documents/70/Exposure_Notification_-_Bluetooth_Specification_v1.2.2.pdf
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*
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* https://covid19-static.cdn-apple.com/applications/covid19/current/static/detection-tracing/pdf/ExposureNotification-BluetoothSpecificationv1.2.pdf
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*
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* @param[in] duration duration of the scan in seconds
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*/
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void ena_bluetooth_scan_start(uint32_t duration);
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/**
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* @brief stop a running BLE scanning
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*/
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void ena_bluetooth_scan_stop(void);
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/**
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* @brief return the current scanning status
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*
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* @return
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* current scan status
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*/
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int ena_bluetooth_scan_get_status(void);
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/**
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* @brief return the num of found devices in last scan
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*
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* @return
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* num of last beacons
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*/
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int ena_bluetooth_scan_get_last_num(void);
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#endif |