Simon Cooksey
Pinned to some recent date
Diff: features/FEATURE_BLE/ble/GapAdvertisingParams.h
- Revision:
- 0:fb7af294d5d9
diff -r 000000000000 -r fb7af294d5d9 features/FEATURE_BLE/ble/GapAdvertisingParams.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/features/FEATURE_BLE/ble/GapAdvertisingParams.h Thu Nov 17 16:43:53 2016 +0000
@@ -0,0 +1,207 @@
+/* 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_ADVERTISING_PARAMS_H__
+#define __GAP_ADVERTISING_PARAMS_H__
+
+/**
+ * This class provides a wrapper for the core advertising parameters,
+ * including the advertising type (Connectable Undirected,
+ * Non Connectable Undirected and so on), as well as the advertising and
+ * timeout intervals.
+ */
+class GapAdvertisingParams {
+public:
+ /**
+ * Minimum Advertising interval for connectable undirected and connectable
+ * directed events in 625us units - 20ms.
+ */
+ static const unsigned GAP_ADV_PARAMS_INTERVAL_MIN = 0x0020;
+ /**
+ * Minimum Advertising interval for scannable and non-connectable
+ * undirected events in 625us units - 100ms.
+ */
+ static const unsigned GAP_ADV_PARAMS_INTERVAL_MIN_NONCON = 0x00A0;
+ /**
+ * Maximum Advertising interval in 625us units - 10.24s.
+ */
+ static const unsigned GAP_ADV_PARAMS_INTERVAL_MAX = 0x4000;
+ /**
+ * Maximum advertising timeout seconds.
+ */
+ static const unsigned GAP_ADV_PARAMS_TIMEOUT_MAX = 0x3FFF;
+
+ /**
+ * Encapsulates the peripheral advertising modes, which determine how
+ * the device appears to other central devices in hearing range.
+ */
+ enum AdvertisingType_t {
+ ADV_CONNECTABLE_UNDIRECTED, /**< Vol 3, Part C, Section 9.3.4 and Vol 6, Part B, Section 2.3.1.1. */
+ ADV_CONNECTABLE_DIRECTED, /**< Vol 3, Part C, Section 9.3.3 and Vol 6, Part B, Section 2.3.1.2. */
+ ADV_SCANNABLE_UNDIRECTED, /**< Include support for Scan Response payloads, see Vol 6, Part B, Section 2.3.1.4. */
+ ADV_NON_CONNECTABLE_UNDIRECTED /**< Vol 3, Part C, Section 9.3.2 and Vol 6, Part B, Section 2.3.1.3. */
+ };
+ /**
+ * Type alias for GapAdvertisingParams::AdvertisingType_t.
+ *
+ * @deprecated This type alias will be dropped in future releases.
+ */
+ typedef enum AdvertisingType_t AdvertisingType;
+
+public:
+ /**
+ * Construct an instance of GapAdvertisingParams.
+ *
+ * @param[in] advType
+ * Type of advertising. Default is
+ * GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED.
+ * @param[in] interval
+ * Advertising interval in units of 0.625ms. Default is
+ * GapAdvertisingParams::GAP_ADV_PARAMS_INTERVAL_MIN_NONCON.
+ * @param[in] timeout
+ * Advertising timeout. Default is 0.
+ */
+ GapAdvertisingParams(AdvertisingType_t advType = ADV_CONNECTABLE_UNDIRECTED,
+ uint16_t interval = GAP_ADV_PARAMS_INTERVAL_MIN_NONCON,
+ uint16_t timeout = 0) : _advType(advType), _interval(interval), _timeout(timeout) {
+ /* Interval checks. */
+ if (_advType == ADV_CONNECTABLE_DIRECTED) {
+ /* Interval must be 0 in directed connectable mode. */
+ _interval = 0;
+ } else if (_advType == ADV_NON_CONNECTABLE_UNDIRECTED) {
+ /* Min interval is slightly larger than in other modes. */
+ if (_interval < GAP_ADV_PARAMS_INTERVAL_MIN_NONCON) {
+ _interval = GAP_ADV_PARAMS_INTERVAL_MIN_NONCON;
+ }
+ if (_interval > GAP_ADV_PARAMS_INTERVAL_MAX) {
+ _interval = GAP_ADV_PARAMS_INTERVAL_MAX;
+ }
+ } else {
+ /* Stay within interval limits. */
+ if (_interval < GAP_ADV_PARAMS_INTERVAL_MIN) {
+ _interval = GAP_ADV_PARAMS_INTERVAL_MIN;
+ }
+ if (_interval > GAP_ADV_PARAMS_INTERVAL_MAX) {
+ _interval = GAP_ADV_PARAMS_INTERVAL_MAX;
+ }
+ }
+
+ /* Timeout checks. */
+ if (timeout) {
+ /* Stay within timeout limits. */
+ if (_timeout > GAP_ADV_PARAMS_TIMEOUT_MAX) {
+ _timeout = GAP_ADV_PARAMS_TIMEOUT_MAX;
+ }
+ }
+ }
+
+ 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_ADVERTISEMENT_DURATION_UNITS(uint32_t durationInMillis) {
+ return (durationInMillis * 1000) / UNIT_0_625_MS;
+ }
+ /**
+ * Convert units of 0.625ms to milliseconds.
+ *
+ * @param[in] gapUnits
+ * The number of units of 0.625ms to convert.
+ *
+ * @return The value of @p gapUnits in milliseconds.
+ */
+ static uint16_t ADVERTISEMENT_DURATION_UNITS_TO_MS(uint16_t gapUnits) {
+ return (gapUnits * UNIT_0_625_MS) / 1000;
+ }
+
+ /**
+ * Get the advertising type.
+ *
+ * @return The advertising type.
+ */
+ AdvertisingType_t getAdvertisingType(void) const {
+ return _advType;
+ }
+
+ /**
+ * Get the advertising interval in milliseconds.
+ *
+ * @return The advertisement interval (in milliseconds).
+ */
+ uint16_t getInterval(void) const {
+ return ADVERTISEMENT_DURATION_UNITS_TO_MS(_interval);
+ }
+
+ /**
+ * Get the advertisement interval in units of 0.625ms.
+ *
+ * @return The advertisement interval in advertisement duration units (0.625ms units).
+ */
+ uint16_t getIntervalInADVUnits(void) const {
+ return _interval;
+ }
+
+ /**
+ * Get The advertising timeout.
+ *
+ * @return The advertising timeout (in seconds).
+ */
+ uint16_t getTimeout(void) const {
+ return _timeout;
+ }
+
+ /**
+ * Set the advertising type.
+ *
+ * @param[in] newAdvType
+ * The new advertising type.
+ */
+ void setAdvertisingType(AdvertisingType_t newAdvType) {
+ _advType = newAdvType;
+ }
+
+ /**
+ * Set the advertising interval in milliseconds.
+ *
+ * @param[in] newInterval
+ * The new advertising interval in milliseconds.
+ */
+ void setInterval(uint16_t newInterval) {
+ _interval = MSEC_TO_ADVERTISEMENT_DURATION_UNITS(newInterval);
+ }
+
+ /**
+ * Set the advertising timeout.
+ *
+ * @param[in] newTimeout
+ * The new advertising timeout (in seconds).
+ */
+ void setTimeout(uint16_t newTimeout) {
+ _timeout = newTimeout;
+ }
+
+private:
+ AdvertisingType_t _advType; /**< The advertising type. */
+ uint16_t _interval; /**< The advertising interval in ADV duration units (i.e. 0.625ms). */
+ uint16_t _timeout; /**< The advertising timeout in seconds. */
+};
+
+#endif /* ifndef __GAP_ADVERTISING_PARAMS_H__ */