Wang Xinglu
High level Bluetooth Low Energy API and radio abstraction layer
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BLE_API
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Bluetooth Low Energy
Diff: ble/Gap.h
- Revision:
- 1135:22aada733dbd
- Parent:
- 1134:d540a48f650d
- Child:
- 1156:e1ea38b576c6
diff -r d540a48f650d -r 22aada733dbd ble/Gap.h
--- a/ble/Gap.h Wed Apr 06 19:13:52 2016 +0100
+++ b/ble/Gap.h Wed Apr 06 19:13:54 2016 +0100
@@ -17,12 +17,14 @@
#ifndef __GAP_H__
#define __GAP_H__
+#include "ble/BLEProtocol.h"
#include "GapAdvertisingData.h"
#include "GapAdvertisingParams.h"
#include "GapScanningParams.h"
#include "GapEvents.h"
#include "CallChainOfFunctionPointersWithContext.h"
#include "FunctionPointerWithContext.h"
+#include "deprecate.h"
/* Forward declarations for classes that will only be used for pointers or references in the following. */
class GapAdvertisingParams;
@@ -30,19 +32,44 @@
class GapAdvertisingData;
class Gap {
+ /*
+ * DEPRECATION ALERT: all of the APIs in this `public` block are deprecated.
+ * They have been relocated to the class BLEProtocol.
+ */
public:
- enum AddressType_t {
- ADDR_TYPE_PUBLIC = 0,
- ADDR_TYPE_RANDOM_STATIC,
- ADDR_TYPE_RANDOM_PRIVATE_RESOLVABLE,
- ADDR_TYPE_RANDOM_PRIVATE_NON_RESOLVABLE
+ /**
+ * Address-type for BLEProtocol addresses.
+ *
+ * @note: deprecated. Use BLEProtocol::AddressType_t instead.
+ */
+ typedef BLEProtocol::AddressType_t AddressType_t;
+
+ /**
+ * Address-type for BLEProtocol addresses.
+ * @note: deprecated. Use BLEProtocol::AddressType_t instead.
+ */
+ typedef BLEProtocol::AddressType_t addr_type_t;
+
+ /**
+ * Address-type for BLEProtocol addresses.
+ * \deprecated: Use BLEProtocol::AddressType_t instead.
+ *
+ * DEPRECATION ALERT: The following constants have been left in their
+ * deprecated state to transparenly support existing applications which may
+ * have used Gap::ADDR_TYPE_*.
+ */
+ enum DeprecatedAddressType_t {
+ ADDR_TYPE_PUBLIC = BLEProtocol::AddressType::PUBLIC,
+ ADDR_TYPE_RANDOM_STATIC = BLEProtocol::AddressType::RANDOM_STATIC,
+ ADDR_TYPE_RANDOM_PRIVATE_RESOLVABLE = BLEProtocol::AddressType::RANDOM_PRIVATE_RESOLVABLE,
+ ADDR_TYPE_RANDOM_PRIVATE_NON_RESOLVABLE = BLEProtocol::AddressType::RANDOM_PRIVATE_NON_RESOLVABLE
};
- typedef enum AddressType_t addr_type_t; /* @Note: Deprecated. Use AddressType_t instead. */
- static const unsigned ADDR_LEN = 6;
- typedef uint8_t Address_t[ADDR_LEN]; /* 48-bit address, LSB format. */
- typedef Address_t address_t; /* @Note: Deprecated. Use Address_t instead. */
+ static const unsigned ADDR_LEN = BLEProtocol::ADDR_LEN; /**< Length (in octets) of the BLE MAC address. */
+ typedef BLEProtocol::AddressBytes_t Address_t; /**< 48-bit address, LSB format. @Note: Deprecated. Use BLEProtocol::AddressBytes_t instead. */
+ typedef BLEProtocol::AddressBytes_t address_t; /**< 48-bit address, LSB format. @Note: Deprecated. Use BLEProtocol::AddressBytes_t instead. */
+public:
enum TimeoutSource_t {
TIMEOUT_SRC_ADVERTISING = 0x00, /**< Advertising timeout. */
TIMEOUT_SRC_SECURITY_REQUEST = 0x01, /**< Security request timeout. */
@@ -66,6 +93,56 @@
CONN_INTERVAL_UNACCEPTABLE = 0x3B,
};
+ /**
+ * Enumeration for whitelist advertising policy filter modes. The possible
+ * filter modes were obtained from the Bluetooth Core Specification
+ * 4.2 (Vol. 6), Part B, Section 4.3.2.
+ *
+ * @experimental
+ */
+ enum AdvertisingPolicyMode_t {
+ ADV_POLICY_IGNORE_WHITELIST = 0,
+ ADV_POLICY_FILTER_SCAN_REQS = 1,
+ ADV_POLICY_FILTER_CONN_REQS = 2,
+ ADV_POLICY_FILTER_ALL_REQS = 3,
+ };
+
+ /**
+ * Enumeration for whitelist scanning policy filter modes. The possible
+ * filter modes were obtained from the Bluetooth Core Specification
+ * 4.2 (Vol. 6), Part B, Section 4.3.3.
+ *
+ * @experimental
+ */
+ enum ScanningPolicyMode_t {
+ SCAN_POLICY_IGNORE_WHITELIST = 0,
+ SCAN_POLICY_FILTER_ALL_ADV = 1,
+ };
+
+ /**
+ * Enumeration for the whitelist initiator policy fiter modes. The possible
+ * filter modes were obtained from the Bluetooth Core Specification
+ * 4.2 (vol. 6), Part B, Section 4.4.4.
+ *
+ * @experimental
+ */
+ enum InitiatorPolicyMode_t {
+ INIT_POLICY_IGNORE_WHITELIST = 0,
+ INIT_POLICY_FILTER_ALL_ADV = 1,
+ };
+
+ /**
+ * Representation of a Bluetooth Low Enery Whitelist containing addresses.
+ *
+ * @experimental
+ */
+ struct Whitelist_t {
+ BLEProtocol::Address_t *addresses;
+ uint8_t size;
+ uint8_t capacity;
+ };
+
+
/* Describes the current state of the device (more than one bit can be set). */
struct GapState_t {
unsigned advertising : 1; /**< Peripheral is currently advertising. */
@@ -75,9 +152,9 @@
typedef uint16_t Handle_t; /* Type for connection handle. */
typedef struct {
- uint16_t minConnectionInterval; /**< Minimum Connection Interval in 1.25 ms units, see @ref BLE_GAP_CP_LIMITS.*/
- uint16_t maxConnectionInterval; /**< Maximum Connection Interval in 1.25 ms units, see @ref BLE_GAP_CP_LIMITS.*/
- uint16_t slaveLatency; /**< Slave Latency in number of connection events, see @ref BLE_GAP_CP_LIMITS.*/
+ uint16_t minConnectionInterval; /**< Minimum Connection Interval in 1.25 ms units, see @ref BLE_GAP_CP_LIMITS.*/
+ uint16_t maxConnectionInterval; /**< Maximum Connection Interval in 1.25 ms units, see @ref BLE_GAP_CP_LIMITS.*/
+ uint16_t slaveLatency; /**< Slave Latency in number of connection events, see @ref BLE_GAP_CP_LIMITS.*/
uint16_t connectionSupervisionTimeout; /**< Connection Supervision Timeout in 10 ms units, see @ref BLE_GAP_CP_LIMITS.*/
} ConnectionParams_t;
@@ -87,31 +164,31 @@
};
struct AdvertisementCallbackParams_t {
- Address_t peerAddr;
- int8_t rssi;
- bool isScanResponse;
- GapAdvertisingParams::AdvertisingType_t type;
- uint8_t advertisingDataLen;
- const uint8_t *advertisingData;
+ BLEProtocol::AddressBytes_t peerAddr;
+ int8_t rssi;
+ bool isScanResponse;
+ GapAdvertisingParams::AdvertisingType_t type;
+ uint8_t advertisingDataLen;
+ const uint8_t *advertisingData;
};
typedef FunctionPointerWithContext<const AdvertisementCallbackParams_t *> AdvertisementReportCallback_t;
struct ConnectionCallbackParams_t {
- Handle_t handle;
- Role_t role;
- AddressType_t peerAddrType;
- Address_t peerAddr;
- AddressType_t ownAddrType;
- Address_t ownAddr;
- const ConnectionParams_t *connectionParams;
+ Handle_t handle;
+ Role_t role;
+ BLEProtocol::AddressType_t peerAddrType;
+ BLEProtocol::AddressBytes_t peerAddr;
+ BLEProtocol::AddressType_t ownAddrType;
+ BLEProtocol::AddressBytes_t ownAddr;
+ const ConnectionParams_t *connectionParams;
- ConnectionCallbackParams_t(Handle_t handleIn,
- Role_t roleIn,
- AddressType_t peerAddrTypeIn,
- const uint8_t *peerAddrIn,
- AddressType_t ownAddrTypeIn,
- const uint8_t *ownAddrIn,
- const ConnectionParams_t *connectionParamsIn) :
+ ConnectionCallbackParams_t(Handle_t handleIn,
+ Role_t roleIn,
+ BLEProtocol::AddressType_t peerAddrTypeIn,
+ const uint8_t *peerAddrIn,
+ BLEProtocol::AddressType_t ownAddrTypeIn,
+ const uint8_t *ownAddrIn,
+ const ConnectionParams_t *connectionParamsIn) :
handle(handleIn),
role(roleIn),
peerAddrType(peerAddrTypeIn),
@@ -151,17 +228,20 @@
typedef FunctionPointerWithContext<bool> RadioNotificationEventCallback_t;
+ typedef FunctionPointerWithContext<const Gap *> GapShutdownCallback_t;
+ typedef CallChainOfFunctionPointersWithContext<const Gap *> GapShutdownCallbackChain_t;
+
/*
* The following functions are meant to be overridden in the platform-specific sub-class.
*/
public:
/**
* Set the BTLE MAC address and type. Please note that the address format is
- * least significant byte first (LSB). Please refer to Address_t.
+ * least significant byte first (LSB). Please refer to BLEProtocol::AddressBytes_t.
*
* @return BLE_ERROR_NONE on success.
*/
- virtual ble_error_t setAddress(AddressType_t type, const Address_t address) {
+ virtual ble_error_t setAddress(BLEProtocol::AddressType_t type, const BLEProtocol::AddressBytes_t address) {
/* avoid compiler warnings about unused variables */
(void)type;
(void)address;
@@ -174,7 +254,7 @@
*
* @return BLE_ERROR_NONE on success.
*/
- virtual ble_error_t getAddress(AddressType_t *typeP, Address_t address) {
+ virtual ble_error_t getAddress(BLEProtocol::AddressType_t *typeP, BLEProtocol::AddressBytes_t address) {
/* Avoid compiler warnings about unused variables. */
(void)typeP;
(void)address;
@@ -233,10 +313,10 @@
* successfully. The connectionCallChain (if set) will be invoked upon
* a connection event.
*/
- virtual ble_error_t connect(const Address_t peerAddr,
- Gap::AddressType_t peerAddrType,
- const ConnectionParams_t *connectionParams,
- const GapScanningParams *scanParams) {
+ virtual ble_error_t connect(const BLEProtocol::AddressBytes_t peerAddr,
+ BLEProtocol::AddressType_t peerAddrType,
+ const ConnectionParams_t *connectionParams,
+ const GapScanningParams *scanParams) {
/* Avoid compiler warnings about unused variables. */
(void)peerAddr;
(void)peerAddrType;
@@ -247,6 +327,23 @@
}
/**
+ * Create a connection (GAP Link Establishment).
+ *
+ * \deprecated: This funtion overloads Gap::connect(const BLEProtocol::Address_t peerAddr,
+ BLEProtocol::AddressType_t peerAddrType,
+ const ConnectionParams_t *connectionParams,
+ const GapScanningParams *scanParams)
+ * to maintain backward compatibility for change from Gap::AddressType_t to BLEProtocol::AddressType_t
+ */
+ ble_error_t connect(const BLEProtocol::AddressBytes_t peerAddr,
+ DeprecatedAddressType_t peerAddrType,
+ const ConnectionParams_t *connectionParams,
+ const GapScanningParams *scanParams)
+ __deprecated_message("Gap::DeprecatedAddressType_t is deprecated, use BLEProtocol::AddressType_t instead") {
+ return connect(peerAddr, (BLEProtocol::AddressType_t) peerAddrType, connectionParams, scanParams);
+ }
+
+ /**
* This call initiates the disconnection procedure, and its completion will
* be communicated to the application with an invocation of the
* disconnectionCallback.
@@ -425,6 +522,156 @@
*countP = 0; /* Requesting action from porter(s): override this API if this capability is supported. */
}
+ /**
+ * @return Maximum size of the whitelist.
+ *
+ * @experimental
+ */
+ virtual uint8_t getMaxWhitelistSize(void) const
+ {
+ return 0;
+ }
+
+ /**
+ * Get the internal whitelist to be used by the Link Layer when scanning,
+ * advertising or initiating a connection depending on the filter policies.
+ *
+ * @param[in/out] whitelist
+ * (on input) whitelist.capacity contains the maximum number
+ * of addresses to be returned.
+ * (on output) The populated whitelist with copies of the
+ * addresses in the implementation's whitelist.
+ *
+ * @return BLE_ERROR_NONE if the implementation's whitelist was successfully
+ * copied into the supplied reference.
+ *
+ * @experimental
+ */
+ virtual ble_error_t getWhitelist(Whitelist_t &whitelist) const
+ {
+ (void) whitelist;
+ return BLE_ERROR_NOT_IMPLEMENTED;
+ }
+
+ /**
+ * Set the internal whitelist to be used by the Link Layer when scanning,
+ * advertising or initiating a connection depending on the filter policies.
+ *
+ * @param[in] whitelist
+ * A reference to a whitelist containing the addresses to
+ * be added to the internal whitelist.
+ *
+ * @return BLE_ERROR_NONE if the implementation's whitelist was successfully
+ * populated with the addresses in the given whitelist.
+ *
+ * @note The whitelist must not contain addresses of type @ref
+ * BLEProtocol::AddressType_t::RANDOM_PRIVATE_NON_RESOLVABLE, this
+ * this will result in a @ref BLE_ERROR_INVALID_PARAM since the
+ * remote peer might change its private address at any time and it
+ * is not possible to resolve it.
+ * @note If the input whitelist is larger than @ref getMaxWhitelistSize()
+ * the @ref BLE_ERROR_PARAM_OUT_OF_RANGE is returned.
+ *
+ * @experimental
+ */
+ virtual ble_error_t setWhitelist(const Whitelist_t &whitelist)
+ {
+ (void) whitelist;
+ return BLE_ERROR_NOT_IMPLEMENTED;
+ }
+
+ /**
+ * Set the advertising policy filter mode to be used in the next call
+ * to startAdvertising().
+ *
+ * @param[in] mode
+ * The new advertising policy filter mode.
+ *
+ * @return BLE_ERROR_NONE if the specified policy filter mode was set
+ * successfully.
+ *
+ * @experimental
+ */
+ virtual ble_error_t setAdvertisingPolicyMode(AdvertisingPolicyMode_t mode)
+ {
+ (void) mode;
+ return BLE_ERROR_NOT_IMPLEMENTED;
+ }
+
+ /**
+ * Set the scan policy filter mode to be used in the next call
+ * to startScan().
+ *
+ * @param[in] mode
+ * The new scan policy filter mode.
+ *
+ * @return BLE_ERROR_NONE if the specified policy filter mode was set
+ * successfully.
+ *
+ * @experimental
+ */
+ virtual ble_error_t setScanningPolicyMode(ScanningPolicyMode_t mode)
+ {
+ (void) mode;
+ return BLE_ERROR_NOT_IMPLEMENTED;
+ }
+
+ /**
+ * Set the initiator policy filter mode to be used.
+ *
+ * @param[in] mode
+ * The new initiator policy filter mode.
+ *
+ * @return BLE_ERROR_NONE if the specified policy filter mode was set
+ * successfully.
+ *
+ * @experimental
+ */
+ virtual ble_error_t setInitiatorPolicyMode(InitiatorPolicyMode_t mode)
+ {
+ (void) mode;
+ return BLE_ERROR_NOT_IMPLEMENTED;
+ }
+
+ /**
+ * Get the advertising policy filter mode that will be used in the next
+ * call to startAdvertising().
+ *
+ * @return The set advertising policy filter mode.
+ *
+ * @experimental
+ */
+ virtual AdvertisingPolicyMode_t getAdvertisingPolicyMode(void) const
+ {
+ return ADV_POLICY_IGNORE_WHITELIST;
+ }
+
+ /**
+ * Get the scan policy filter mode that will be used in the next
+ * call to startScan().
+ *
+ * @return The set scan policy filter mode.
+ *
+ * @experimental
+ */
+ virtual ScanningPolicyMode_t getScanningPolicyMode(void) const
+ {
+ return SCAN_POLICY_IGNORE_WHITELIST;
+ }
+
+ /**
+ * Get the initiator policy filter mode that will be used.
+ *
+ * @return The set scan policy filter mode.
+ *
+ * @experimental
+ */
+ virtual InitiatorPolicyMode_t getInitiatorPolicyMode(void) const
+ {
+ return INIT_POLICY_IGNORE_WHITELIST;
+ }
+
+
protected:
/* Override the following in the underlying adaptation layer to provide the functionality of scanning. */
virtual ble_error_t startRadioScan(const GapScanningParams &scanningParams) {
@@ -575,6 +822,16 @@
* @param type The type describing the variable length data.
* @param data Data bytes.
* @param len Length of data.
+ *
+ * @return BLE_ERROR_NONE if the advertisement payload was updated based on
+ * matching AD type; otherwise, an appropriate error.
+ *
+ * @note When the specified AD type is INCOMPLETE_LIST_16BIT_SERVICE_IDS,
+ * COMPLETE_LIST_16BIT_SERVICE_IDS, INCOMPLETE_LIST_32BIT_SERVICE_IDS,
+ * COMPLETE_LIST_32BIT_SERVICE_IDS, INCOMPLETE_LIST_128BIT_SERVICE_IDS,
+ * COMPLETE_LIST_128BIT_SERVICE_IDS or LIST_128BIT_SOLICITATION_IDS the
+ * supplied value is appended to the values previously added to the
+ * payload.
*/
ble_error_t accumulateAdvertisingPayload(GapAdvertisingData::DataType type, const uint8_t *data, uint8_t len) {
if (type == GapAdvertisingData::COMPLETE_LOCAL_NAME) {
@@ -591,8 +848,7 @@
/**
* Update a particular ADV field in the advertising payload (based on
- * matching type and length). Note: the length of the new data must be the
- * same as the old one.
+ * matching type).
*
* @param[in] type The ADV type field describing the variable length data.
* @param[in] data Data bytes.
@@ -601,7 +857,7 @@
* @note: If advertisements are enabled, then the update will take effect immediately.
*
* @return BLE_ERROR_NONE if the advertisement payload was updated based on
- * a <type, len> match; otherwise, an appropriate error.
+ * matching AD type; otherwise, an appropriate error.
*/
ble_error_t updateAdvertisingPayload(GapAdvertisingData::DataType type, const uint8_t *data, uint8_t len) {
if (type == GapAdvertisingData::COMPLETE_LOCAL_NAME) {
@@ -983,6 +1239,80 @@
radioNotificationCallback.attach(tptr, mptr);
}
+ /**
+ * Setup a callback to be invoked to notify the user application that the
+ * Gap instance is about to shutdown (possibly as a result of a call
+ * to BLE::shutdown()).
+ *
+ * @Note: It is possible to chain together multiple onShutdown callbacks
+ * (potentially from different modules of an application) to be notified
+ * before the Gap instance is shutdown.
+ *
+ * @Note: It is also possible to set up a callback into a member function of
+ * some object.
+ *
+ * @Note It is possible to unregister a callback using onShutdown().detach(callback)
+ */
+ void onShutdown(const GapShutdownCallback_t& callback) {
+ shutdownCallChain.add(callback);
+ }
+ template <typename T>
+ void onShutdown(T *objPtr, void (T::*memberPtr)(void)) {
+ shutdownCallChain.add(objPtr, memberPtr);
+ }
+
+ /**
+ * @brief provide access to the callchain of shutdown event callbacks
+ * It is possible to register callbacks using onShutdown().add(callback);
+ * It is possible to unregister callbacks using onShutdown().detach(callback)
+ * @return The shutdown event callbacks chain
+ */
+ GapShutdownCallbackChain_t& onShutdown() {
+ return shutdownCallChain;
+ }
+
+public:
+ /**
+ * Notify all registered onShutdown callbacks that the Gap instance is
+ * about to be shutdown and clear all Gap state of the
+ * associated object.
+ *
+ * This function is meant to be overridden in the platform-specific
+ * sub-class. Nevertheless, the sub-class is only expected to reset its
+ * state and not the data held in Gap members. This shall be achieved by a
+ * call to Gap::reset() from the sub-class' reset() implementation.
+ *
+ * @return BLE_ERROR_NONE on success.
+ *
+ * @note: Currently a call to reset() does not reset the advertising and
+ * scan parameters to default values.
+ */
+ virtual ble_error_t reset(void) {
+ /* Notify that the instance is about to shutdown */
+ shutdownCallChain.call(this);
+ shutdownCallChain.clear();
+
+ /* Clear Gap state */
+ state.advertising = 0;
+ state.connected = 0;
+
+ /* Clear scanning state */
+ scanningActive = false;
+
+ /* Clear advertising and scanning data */
+ _advPayload.clear();
+ _scanResponse.clear();
+
+ /* Clear callbacks */
+ timeoutCallbackChain.clear();
+ connectionCallChain.clear();
+ disconnectionCallChain.clear();
+ radioNotificationCallback = NULL;
+ onAdvertisementReport = NULL;
+
+ return BLE_ERROR_NONE;
+ }
+
protected:
Gap() :
_advParams(),
@@ -1002,13 +1332,13 @@
/* Entry points for the underlying stack to report events back to the user. */
public:
- void processConnectionEvent(Handle_t handle,
- Role_t role,
- AddressType_t peerAddrType,
- const Address_t peerAddr,
- AddressType_t ownAddrType,
- const Address_t ownAddr,
- const ConnectionParams_t *connectionParams) {
+ void processConnectionEvent(Handle_t handle,
+ Role_t role,
+ BLEProtocol::AddressType_t peerAddrType,
+ const BLEProtocol::AddressBytes_t peerAddr,
+ BLEProtocol::AddressType_t ownAddrType,
+ const BLEProtocol::AddressBytes_t ownAddr,
+ const ConnectionParams_t *connectionParams) {
state.connected = 1;
ConnectionCallbackParams_t callbackParams(handle, role, peerAddrType, peerAddr, ownAddrType, ownAddr, connectionParams);
connectionCallChain.call(&callbackParams);
@@ -1020,12 +1350,12 @@
disconnectionCallChain.call(&callbackParams);
}
- void processAdvertisementReport(const Address_t peerAddr,
- int8_t rssi,
- bool isScanResponse,
+ void processAdvertisementReport(const BLEProtocol::AddressBytes_t peerAddr,
+ int8_t rssi,
+ bool isScanResponse,
GapAdvertisingParams::AdvertisingType_t type,
- uint8_t advertisingDataLen,
- const uint8_t *advertisingData) {
+ uint8_t advertisingDataLen,
+ const uint8_t *advertisingData) {
AdvertisementCallbackParams_t params;
memcpy(params.peerAddr, peerAddr, ADDR_LEN);
params.rssi = rssi;
@@ -1059,6 +1389,9 @@
DisconnectionEventCallbackChain_t disconnectionCallChain;
private:
+ GapShutdownCallbackChain_t shutdownCallChain;
+
+private:
/* Disallow copy and assignment. */
Gap(const Gap &);
Gap& operator=(const Gap &);