Diff: features/FEATURE_BLE/ble/GapScanningParams.h

Revision:

0:fb7af294d5d9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/features/FEATURE_BLE/ble/GapScanningParams.h	Thu Nov 17 16:43:53 2016 +0000
@@ -0,0 +1,152 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+*/
+
+#ifndef __GAP_SCANNING_PARAMS_H__
+#define __GAP_SCANNING_PARAMS_H__
+
+class GapScanningParams {
+public:
+    static const unsigned SCAN_INTERVAL_MIN = 0x0004; /**< Minimum Scan interval in 625us units - 2.5ms. */
+    static const unsigned SCAN_INTERVAL_MAX = 0x4000; /**< Maximum Scan interval in 625us units - 10.24s. */
+    static const unsigned SCAN_WINDOW_MIN   = 0x0004; /**< Minimum Scan window in 625us units - 2.5ms. */
+    static const unsigned SCAN_WINDOW_MAX   = 0x4000; /**< Maximum Scan window in 625us units - 10.24s. */
+    static const unsigned SCAN_TIMEOUT_MIN  = 0x0001; /**< Minimum Scan timeout in seconds. */
+    static const unsigned SCAN_TIMEOUT_MAX  = 0xFFFF; /**< Maximum Scan timeout in seconds. */
+
+public:
+    /**
+     * Construct an instance of GapScanningParams.
+     *
+     * @param[in] interval
+     *              The scan interval in milliseconds. Default is
+     *              GapScanningParams::SCAN_INTERVAL_MIN.
+     * @param[in] window
+     *              The scan window in milliseconds. Default is
+     *              GapScanningParams::SCAN_WINDOW_MAX.
+     * @param[in] timeout
+     *              The scan timeout in seconds. Default is 0.
+     * @param[in] activeScanning
+     *              Set to True if active-scanning is required. This is used to
+     *              fetch the scan response from a peer if possible. Default is
+     *              false.
+     */
+    GapScanningParams(uint16_t interval       = SCAN_INTERVAL_MAX,
+                      uint16_t window         = SCAN_WINDOW_MAX,
+                      uint16_t timeout        = 0,
+                      bool     activeScanning = false);
+
+    static const uint16_t UNIT_0_625_MS = 625;  /**< Number of microseconds in 0.625 milliseconds. */
+    /**
+     * Convert milliseconds to units of 0.625ms.
+     *
+     * @param[in] durationInMillis
+     *              The number of milliseconds to convert.
+     *
+     * @return The value of @p durationInMillis in units of 0.625ms.
+     */
+    static uint16_t MSEC_TO_SCAN_DURATION_UNITS(uint32_t durationInMillis) {
+        return (durationInMillis * 1000) / UNIT_0_625_MS;
+    }
+
+    /**
+     * Set the scan interval.
+     *
+     * @param[in] newIntervalInMS
+     *              New scan interval in milliseconds.
+     *
+     * @return BLE_ERROR_NONE if the new scan interval was set successfully.
+     */
+    ble_error_t setInterval(uint16_t newIntervalInMS);
+
+    /**
+     * Set the scan window.
+     *
+     * @param[in] newWindowInMS
+     *              New scan window in milliseconds.
+     *
+     * @return BLE_ERROR_NONE if the new scan window was set successfully.
+     */
+    ble_error_t setWindow(uint16_t newWindowInMS);
+
+    /**
+     * Set the scan timeout.
+     *
+     * @param[in] newTimeout
+     *              New scan timeout in seconds.
+     *
+     * @return BLE_ERROR_NONE if the new scan window was set successfully.
+     */
+    ble_error_t setTimeout(uint16_t newTimeout);
+
+    /**
+     * Set active scanning. This is used to fetch the scan response from a peer
+     * if possible.
+     *
+     * @param[in] activeScanning
+     *              The new boolean value of active scanning.
+     */
+    void setActiveScanning(bool activeScanning);
+
+public:
+    /**
+     * Get the scan interval.
+     *
+     * @return the scan interval in units of 0.625ms.
+     */
+    uint16_t getInterval(void) const {
+        return _interval;
+    }
+
+    /**
+     * Get the scan window.
+     *
+     * @return the scan window in units of 0.625ms.
+     */
+    uint16_t getWindow(void) const {
+        return _window;
+    }
+
+    /**
+     * Get the scan timeout.
+     *
+     * @return The scan timeout in seconds.
+     */
+    uint16_t getTimeout(void) const {
+        return _timeout;
+    }
+
+    /**
+     * Check whether active scanning is set.
+     *
+     * @return True if active scanning is set, false otherwise.
+     */
+    bool getActiveScanning(void) const {
+        return _activeScanning;
+    }
+
+private:
+    uint16_t _interval; /**< Scan interval in units of 625us (between 2.5ms and 10.24s). */
+    uint16_t _window;   /**< Scan window in units of 625us (between 2.5ms and 10.24s). */
+    uint16_t _timeout;  /**< Scan timeout between 0x0001 and 0xFFFF in seconds; 0x0000 disables timeout. */
+    bool     _activeScanning; /**< Obtain the peer device's advertising data and (if possible) scanResponse. */
+
+private:
+    /* Disallow copy constructor. */
+    GapScanningParams(const GapScanningParams &);
+    GapScanningParams& operator =(const GapScanningParams &in);
+};
+
+#endif /* ifndef __GAP_SCANNING_PARAMS_H__ */