prova invio BLE
Dependents: BLE_HeartRate_IDB04A1
Fork of BLE_API by
Diff: ble/Gap.h
- Revision:
- 1183:1589830dbdb7
- Parent:
- 1182:b70129080ddf
- Child:
- 1185:a16103dfb50c
diff -r b70129080ddf -r 1589830dbdb7 ble/Gap.h --- a/ble/Gap.h Wed Apr 06 19:15:34 2016 +0100 +++ b/ble/Gap.h Wed Apr 06 19:15:36 2016 +0100 @@ -40,23 +40,24 @@ /** * Address-type for BLEProtocol addresses. * - * @note: deprecated. Use BLEProtocol::AddressType_t instead. + * @deprecated Use BLEProtocol::AddressType_t instead. */ typedef BLEProtocol::AddressType_t AddressType_t; /** * Address-type for BLEProtocol addresses. - * @note: deprecated. Use BLEProtocol::AddressType_t instead. + * + * @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_*. + * @deprecated Use BLEProtocol::AddressType_t instead. 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, @@ -65,11 +66,27 @@ ADDR_TYPE_RANDOM_PRIVATE_NON_RESOLVABLE = BLEProtocol::AddressType::RANDOM_PRIVATE_NON_RESOLVABLE }; - 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. */ + /** + * Length (in octets) of the BLE MAC address. + */ + static const unsigned ADDR_LEN = BLEProtocol::ADDR_LEN; + /** + * 48-bit address, LSB format. + * + * @deprecated Use BLEProtocol::AddressBytes_t instead. + */ + typedef BLEProtocol::AddressBytes_t Address_t; + /** + * 48-bit address, LSB format. + * + * @deprecated Use BLEProtocol::AddressBytes_t instead. + */ + typedef BLEProtocol::AddressBytes_t address_t; public: + /** + * Enumeration for timeout sources. + */ enum TimeoutSource_t { TIMEOUT_SRC_ADVERTISING = 0x00, /**< Advertising timeout. */ TIMEOUT_SRC_SECURITY_REQUEST = 0x01, /**< Security request timeout. */ @@ -137,51 +154,94 @@ * @experimental */ struct Whitelist_t { - BLEProtocol::Address_t *addresses; - uint8_t size; - uint8_t capacity; + BLEProtocol::Address_t *addresses; /**< List of BLE addresses in the whitelist. */ + uint8_t size; /**< Total number of BLE addresses in this whitelist */ + uint8_t capacity; /**< Maximum number of BLE addresses that can be added to this whitelist. */ }; - /* Describes the current state of the device (more than one bit can be set). */ + /** + * Describes the current state of the device (more than one bit can be set). + */ struct GapState_t { unsigned advertising : 1; /**< Peripheral is currently advertising. */ unsigned connected : 1; /**< Peripheral is connected to a central. */ }; - typedef uint16_t Handle_t; /* Type for connection handle. */ + /** + * Type for connection handle. + */ + typedef uint16_t Handle_t; + /** + * Structure containing GAP connection parameters. When in peripheral role + * the connection parameters are suggestions. The choice of the connection + * parameters is eventually up to the central. + */ 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 connectionSupervisionTimeout; /**< Connection Supervision Timeout in 10 ms units, see @ref BLE_GAP_CP_LIMITS.*/ + uint16_t minConnectionInterval; /**< Minimum Connection Interval in 1.25 ms units, see BLE_GAP_CP_LIMITS.*/ + uint16_t maxConnectionInterval; /**< Maximum Connection Interval in 1.25 ms units, see BLE_GAP_CP_LIMITS.*/ + uint16_t slaveLatency; /**< Slave Latency in number of connection events, see BLE_GAP_CP_LIMITS.*/ + uint16_t connectionSupervisionTimeout; /**< Connection Supervision Timeout in 10 ms units, see BLE_GAP_CP_LIMITS.*/ } ConnectionParams_t; + /** + * Enumeration for the possible GAP roles of a BLE device. + */ enum Role_t { PERIPHERAL = 0x1, /**< Peripheral Role. */ CENTRAL = 0x2, /**< Central Role. */ }; + /** + * Structure containing data and metadata of a scanned advertising packet. + */ struct AdvertisementCallbackParams_t { - BLEProtocol::AddressBytes_t peerAddr; - int8_t rssi; - bool isScanResponse; - GapAdvertisingParams::AdvertisingType_t type; - uint8_t advertisingDataLen; - const uint8_t *advertisingData; + BLEProtocol::AddressBytes_t peerAddr; /**< The peer's BLE address. */ + int8_t rssi; /**< The advertisement packet RSSI value. */ + bool isScanResponse; /**< Whether this packet is the response to a scan request. */ + GapAdvertisingParams::AdvertisingType_t type; /**< The type of advertisement. */ + uint8_t advertisingDataLen; /**< Length of the advertisement data. */ + const uint8_t *advertisingData; /**< Pointer to the advertisement packet's data. */ }; + + /** + * Type for the handlers of advertisement callback events. Refer to + * Gap::startScan(). + */ typedef FunctionPointerWithContext<const AdvertisementCallbackParams_t *> AdvertisementReportCallback_t; + /** + * Encapsulates the parameters of a connection. This information is passed + * to the registered handler of connection events. Refer to Gap::onConnection(). + */ struct ConnectionCallbackParams_t { - 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; + Handle_t handle; /**< The ID for this connection */ + Role_t role; /**< This device's role in the connection */ + BLEProtocol::AddressType_t peerAddrType; /**< The peer's BLE address type */ + BLEProtocol::AddressBytes_t peerAddr; /**< The peer's BLE address */ + BLEProtocol::AddressType_t ownAddrType; /**< This device's BLE address type */ + BLEProtocol::AddressBytes_t ownAddr; /**< This devices's BLE address */ + const ConnectionParams_t *connectionParams; /**< The currently configured connection parameters */ + /** + * Constructor for ConnectionCallbackParams_t. + * + * @param[in] handleIn + * Value for ConnectionCallbackParams_t::handle + * @param[in] roleIn + * Value for ConnectionCallbackParams_t::role + * @param[in] peerAddrTypeIn + * Value for ConnectionCallbackParams_t::peerAddrType + * @param[in] peerAddrIn + * Value for ConnectionCallbackParams_t::peerAddr + * @param[in] ownAddrTypeIn + * Value for ConnectionCallbackParams_t::ownAddrType + * @param[in] ownAddrIn + * Value for ConnectionCallbackParams_t::ownAddr + * @param[in] connectionParamsIn + * Value for ConnectionCallbackParams_t::connectionParams + */ ConnectionCallbackParams_t(Handle_t handleIn, Role_t roleIn, BLEProtocol::AddressType_t peerAddrTypeIn, @@ -201,10 +261,22 @@ } }; + /** + * Structure that encapsulates information about a disconnection event. + * Refer to Gap::onDisconnection(). + */ struct DisconnectionCallbackParams_t { - Handle_t handle; - DisconnectionReason_t reason; + Handle_t handle; /**< The ID of the connection that caused the disconnection event */ + DisconnectionReason_t reason; /**< The reason of the disconnection event */ + /** + * Constructor for DisconnectionCallbackParams_t. + * + * @param[in] handleIn + * Value for DisconnectionCallbackParams_t::handle. + * @param[in] reasonIn + * Value for DisconnectionCallbackParams_t::reason. + */ DisconnectionCallbackParams_t(Handle_t handleIn, DisconnectionReason_t reasonIn) : handle(handleIn), @@ -213,22 +285,63 @@ }; static const uint16_t UNIT_1_25_MS = 1250; /**< Number of microseconds in 1.25 milliseconds. */ + /** + * Helper function to convert from units of milliseconds to GAP duration + * units. + * + * @param[in] durationInMillis + * The duration in milliseconds. + * + * @return The duration in GAP duration units. + */ static uint16_t MSEC_TO_GAP_DURATION_UNITS(uint32_t durationInMillis) { return (durationInMillis * 1000) / UNIT_1_25_MS; } + /** + * Type for the registered callbacks added to the timeout event callchain. + * Refer to Gap::onTimeout(). + */ typedef FunctionPointerWithContext<TimeoutSource_t> TimeoutEventCallback_t; + /** + * Type for the timeout event callchain. Refer to Gap::onTimeout(). + */ typedef CallChainOfFunctionPointersWithContext<TimeoutSource_t> TimeoutEventCallbackChain_t; + /** + * Type for the registered callbacks added to the connection event + * callchain. Refer to Gap::onConnection(). + */ typedef FunctionPointerWithContext<const ConnectionCallbackParams_t *> ConnectionEventCallback_t; + /** + * Type for the connection event callchain. Refer to Gap::onConnection(). + */ typedef CallChainOfFunctionPointersWithContext<const ConnectionCallbackParams_t *> ConnectionEventCallbackChain_t; + /** + * Type for the registered callbacks added to the disconnection event + * callchain. Refer to Gap::onDisconnetion(). + */ typedef FunctionPointerWithContext<const DisconnectionCallbackParams_t*> DisconnectionEventCallback_t; + /** + * Type for the disconnection event callchain. Refer to Gap::onDisconnection(). + */ typedef CallChainOfFunctionPointersWithContext<const DisconnectionCallbackParams_t*> DisconnectionEventCallbackChain_t; + /** + * Type for the handlers of radio notification callback events. Refer to + * Gap::onRadioNotification(). + */ typedef FunctionPointerWithContext<bool> RadioNotificationEventCallback_t; + /** + * Type for the handlers of shutdown callback events. Refer to + * Gap::onShutdown(). + */ typedef FunctionPointerWithContext<const Gap *> GapShutdownCallback_t; + /** + * Type for the shutdown event callchain. Refer to Gap::onShutdown(). + */ typedef CallChainOfFunctionPointersWithContext<const Gap *> GapShutdownCallbackChain_t; /* @@ -239,6 +352,11 @@ * Set the BTLE MAC address and type. Please note that the address format is * least significant byte first (LSB). Please refer to BLEProtocol::AddressBytes_t. * + * @param[in] type + * The type of the BLE address to set. + * @param[in] address + * The BLE address to set. + * * @return BLE_ERROR_NONE on success. */ virtual ble_error_t setAddress(BLEProtocol::AddressType_t type, const BLEProtocol::AddressBytes_t address) { @@ -252,6 +370,11 @@ /** * Fetch the BTLE MAC address and type. * + * @param[out] typeP + * The current BLE address type. + * @param[out] address + * The current BLE address. + * * @return BLE_ERROR_NONE on success. */ virtual ble_error_t getAddress(BLEProtocol::AddressType_t *typeP, BLEProtocol::AddressBytes_t address) { @@ -263,28 +386,44 @@ } /** + * Get the minimum advertising interval in milliseconds for connectable + * undirected and connectable directed event types supported by the + * underlying BLE stack. + * * @return Minimum Advertising interval in milliseconds for connectable - * undirected and connectable directed event types. + * undirected and connectable directed event types. */ virtual uint16_t getMinAdvertisingInterval(void) const { return 0; /* Requesting action from porter(s): override this API if this capability is supported. */ } /** + * Get the minimum advertising interval in milliseconds for scannable + * undirected and non-connectable undirected even types supported by the + * underlying BLE stack. + * * @return Minimum Advertising interval in milliseconds for scannable - * undirected and non-connectable undirected event types. + * undirected and non-connectable undirected event types. */ virtual uint16_t getMinNonConnectableAdvertisingInterval(void) const { return 0; /* Requesting action from porter(s): override this API if this capability is supported. */ } /** + * Get the maximum advertising interval in milliseconds for all event types + * supported by the underlying BLE stack. + * * @return Maximum Advertising interval in milliseconds. */ virtual uint16_t getMaxAdvertisingInterval(void) const { return 0xFFFF; /* Requesting action from porter(s): override this API if this capability is supported. */ } + /** + * Stop advertising. The current advertising parameters remain in effect. + * + * @retval BLE_ERROR_NONE if successfully stopped advertising procedure. + */ virtual ble_error_t stopAdvertising(void) { return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porter(s): override this API if this capability is supported. */ } @@ -301,17 +440,18 @@ /** * Create a connection (GAP Link Establishment). * - * @param peerAddr - * 48-bit address, LSB format. - * @param peerAddrType - * Address type of the peer. - * @param connectionParams - * Connection parameters. - * @param scanParams - * Paramters to be used while scanning for the peer. + * @param[in] peerAddr + * 48-bit address, LSB format. + * @param[in] peerAddrType + * Address type of the peer. + * @param[in] connectionParams + * Connection parameters. + * @param[in] scanParams + * Paramters to be used while scanning for the peer. + * * @return BLE_ERROR_NONE if connection establishment procedure is started - * successfully. The connectionCallChain (if set) will be invoked upon - * a connection event. + * successfully. The connectionCallChain (if set) will be invoked upon + * a connection event. */ virtual ble_error_t connect(const BLEProtocol::AddressBytes_t peerAddr, BLEProtocol::AddressType_t peerAddrType, @@ -329,11 +469,12 @@ /** * 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 + * @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, @@ -348,8 +489,12 @@ * be communicated to the application with an invocation of the * disconnectionCallback. * - * @param reason - * The reason for disconnection; to be sent back to the peer. + * @param[in] reason + * The reason for disconnection; to be sent back to the peer. + * @param[in] connectionHandle + * The handle of the connection to disconnect from. + * + * @return BLE_ERROR_NONE if disconnection was successful. */ virtual ble_error_t disconnect(Handle_t connectionHandle, DisconnectionReason_t reason) { /* avoid compiler warnings about unused variables */ @@ -364,13 +509,15 @@ * be communicated to the application with an invocation of the * disconnectionCallback. * - * @param reason - * The reason for disconnection; to be sent back to the peer. + * @param[in] reason + * The reason for disconnection; to be sent back to the peer. + * + * @return BLE_ERROR_NONE if disconnection was successful. * - * @note: This version of disconnect() doesn't take a connection handle. It - * works reliably only for stacks that are limited to a single - * connection. This API should be considered *deprecated* in favour of the - * alternative, which takes a connection handle. It will be dropped in the future. + * @deprecated This version of disconnect() doesn't take a connection handle. It + * works reliably only for stacks that are limited to a single + * connection. Use instead Gap::disconnect(Handle_t connectionHandle, + * DisconnectionReason_t reason) instead. */ virtual ble_error_t disconnect(DisconnectionReason_t reason) { /* Avoid compiler warnings about unused variables. */ @@ -389,7 +536,7 @@ * for this is owned by the caller. * * @return BLE_ERROR_NONE if the parameters were successfully filled into - * the given structure pointed to by params. + * the given structure pointed to by params. */ virtual ble_error_t getPreferredConnectionParams(ConnectionParams_t *params) { /* Avoid compiler warnings about unused variables. */ @@ -405,6 +552,9 @@ * * @param[in] params * The structure containing the desired parameters. + * + * @return BLE_ERROR_NONE if the preferred connection params were set + * correctly. */ virtual ble_error_t setPreferredConnectionParams(const ConnectionParams_t *params) { /* Avoid compiler warnings about unused variables. */ @@ -414,16 +564,18 @@ } /** - * Update connection parameters. - * In the central role this will initiate a Link Layer connection parameter update procedure. - * In the peripheral role, this will send the corresponding L2CAP request and wait for - * the central to perform the procedure. + * Update connection parameters. In the central role this will initiate a + * Link Layer connection parameter update procedure. In the peripheral role, + * this will send the corresponding L2CAP request and wait for the central + * to perform the procedure. * * @param[in] handle * Connection Handle. * @param[in] params * Pointer to desired connection parameters. If NULL is provided on a peripheral role, * the parameters in the PPCP characteristic of the GAP service will be used instead. + * + * @return BLE_ERROR_NONE if the connection parameters were updated correctly. */ virtual ble_error_t updateConnectionParams(Handle_t handle, const ConnectionParams_t *params) { /* avoid compiler warnings about unused variables */ @@ -435,8 +587,11 @@ /** * Set the device name characteristic in the GAP service. + * * @param[in] deviceName * The new value for the device-name. This is a UTF-8 encoded, <b>NULL-terminated</b> string. + * + * @return BLE_ERROR_NONE if the device name was set correctly. */ virtual ble_error_t setDeviceName(const uint8_t *deviceName) { /* Avoid compiler warnings about unused variables. */ @@ -447,21 +602,25 @@ /** * Get the value of the device name characteristic in the GAP service. + * * @param[out] deviceName * Pointer to an empty buffer where the UTF-8 *non NULL- * terminated* string will be placed. Set this * value to NULL in order to obtain the deviceName-length * from the 'length' parameter. * - * @param[in/out] lengthP + * @param[in,out] lengthP * (on input) Length of the buffer pointed to by deviceName; * (on output) the complete device name length (without the * null terminator). * + * @return BLE_ERROR_NONE if the device name was fetched correctly from the + * underlying BLE stack. + * * @note If the device name is longer than the size of the supplied buffer, - * length will return the complete device name length, and not the - * number of bytes actually returned in deviceName. The application may - * use this information to retry with a suitable buffer size. + * length will return the complete device name length, and not the + * number of bytes actually returned in deviceName. The application may + * use this information to retry with a suitable buffer size. */ virtual ble_error_t getDeviceName(uint8_t *deviceName, unsigned *lengthP) { /* avoid compiler warnings about unused variables */ @@ -473,8 +632,11 @@ /** * Set the appearance characteristic in the GAP service. + * * @param[in] appearance * The new value for the device-appearance. + * + * @return BLE_ERROR_NONE if the new appearance was set correctly. */ virtual ble_error_t setAppearance(GapAdvertisingData::Appearance appearance) { /* Avoid compiler warnings about unused variables. */ @@ -485,8 +647,12 @@ /** * Get the appearance characteristic in the GAP service. + * * @param[out] appearance - * The new value for the device-appearance. + * The current device-appearance value. + * + * @return BLE_ERROR_NONE if the device-appearance was fetched correctly + * from the underlying BLE stack. */ virtual ble_error_t getAppearance(GapAdvertisingData::Appearance *appearanceP) { /* Avoid compiler warnings about unused variables. */ @@ -497,7 +663,12 @@ /** * Set the radio's transmit power. - * @param[in] txPower Radio transmit power in dBm. + * + * @param[in] txPower + * Radio's transmit power in dBm. + * + * @return BLE_ERROR_NONE if the new radio's transmit power was set + * correctly. */ virtual ble_error_t setTxPower(int8_t txPower) { /* Avoid compiler warnings about unused variables. */ @@ -523,8 +694,14 @@ } /** + * Get the maximum size of the whitelist. + * * @return Maximum size of the whitelist. * + * @note If using mbed OS the size of the whitelist can be configured by + * setting the YOTTA_CFG_WHITELIST_MAX_SIZE macro in your yotta + * config file. + * * @experimental */ virtual uint8_t getMaxWhitelistSize(void) const @@ -536,7 +713,7 @@ * 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 + * @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 @@ -674,6 +851,15 @@ protected: /* Override the following in the underlying adaptation layer to provide the functionality of scanning. */ + + /** + * Start scanning procedure in the underlying BLE stack. + * + * @param[in] scanningParams + * The GAP scanning parameters. + * + * @return BLE_ERROR_NONE if the scan procedure started successfully. + */ virtual ble_error_t startRadioScan(const GapScanningParams &scanningParams) { (void)scanningParams; return BLE_ERROR_NOT_IMPLEMENTED; /* Requesting action from porter(s): override this API if this capability is supported. */ @@ -684,8 +870,10 @@ */ public: /** - * Returns the current GAP state of the device using a bitmask that + * Get the current GAP state of the device using a bitmask that * describes whether the device is advertising or connected. + * + * @return The current GAP state of the device. */ GapState_t getState(void) const { return state; @@ -693,12 +881,17 @@ /** * Set the GAP advertising mode to use for this device. + * + * @param[in] advType + * The new type of the advertising packets. */ void setAdvertisingType(GapAdvertisingParams::AdvertisingType_t advType) { _advParams.setAdvertisingType(advType); } /** + * Set the advertising interval. + * * @param[in] interval * Advertising interval in units of milliseconds. Advertising * is disabled if interval is 0. If interval is smaller than @@ -709,15 +902,15 @@ * This field must be set to 0 if connectionMode is equal * to ADV_CONNECTABLE_DIRECTED. * - * @note: Decreasing this value will allow central devices to detect a - * peripheral faster, at the expense of more power being used by the radio - * due to the higher data transmit rate. + * @note Decreasing this value will allow central devices to detect a + * peripheral faster, at the expense of more power being used by the radio + * due to the higher data transmit rate. * - * @Note: [WARNING] This API previously used 0.625ms as the unit for its - * 'interval' argument. That required an explicit conversion from - * milliseconds using Gap::MSEC_TO_GAP_DURATION_UNITS(). This conversion is - * no longer required as the new units are milliseconds. Any application - * code depending on the old semantics needs to be updated accordingly. + * @note [WARNING] This API previously used 0.625ms as the unit for its + * @p interval argument. That required an explicit conversion from + * milliseconds using Gap::MSEC_TO_GAP_DURATION_UNITS(). This conversion is + * no longer required as the new units are milliseconds. Any application + * code depending on the old semantics needs to be updated accordingly. */ void setAdvertisingInterval(uint16_t interval) { if (interval == 0) { @@ -729,6 +922,9 @@ } /** + * Set the advertising timeout. The length of time to advertise for before + * a timeout event is generated. + * * @param[in] timeout * Advertising timeout (in seconds) between 0x1 and 0x3FFF (1 * and 16383). Use 0 to disable the advertising timeout. @@ -739,14 +935,12 @@ /** * Start advertising. + * + * @return BLE_ERROR_NONE if the device started advertising successfully. */ ble_error_t startAdvertising(void) { - ble_error_t rc; setAdvertisingData(); /* Update the underlying stack. */ - if ((rc = startAdvertising(_advParams)) == BLE_ERROR_NONE) { - state.advertising = 1; - } - return rc; + return startAdvertising(_advParams); } /** @@ -769,6 +963,9 @@ * The flags to be added. Please refer to * GapAdvertisingData::Flags for valid flags. Multiple * flags may be specified in combination. + * + * @return BLE_ERROR_NONE if the data was successfully added to the + * advertising payload. */ ble_error_t accumulateAdvertisingPayload(uint8_t flags) { ble_error_t rc; @@ -785,8 +982,11 @@ * as an additional 31 bytes if the advertising payload is too * small. * - * @param app - * The appearance of the peripheral. + * @param[in] app + * The appearance of the peripheral. + * + * @return BLE_ERROR_NONE if the data was successfully added to the + * advertising payload. */ ble_error_t accumulateAdvertisingPayload(GapAdvertisingData::Appearance app) { setAppearance(app); @@ -805,8 +1005,11 @@ * as an additional 31 bytes if the advertising payload is too * small. * - * @param power - * The max transmit power to be used by the controller (in dBm). + * @param[in] power + * The max transmit power to be used by the controller (in dBm). + * + * @return BLE_ERROR_NONE if the data was successfully added to the + * advertising payload. */ ble_error_t accumulateAdvertisingPayloadTxPower(int8_t power) { ble_error_t rc; @@ -823,9 +1026,12 @@ * The SCAN_RESPONSE message may be used as an additional 31 bytes if the * advertising payload is too small. * - * @param type The type describing the variable length data. - * @param data Data bytes. - * @param len Length of data. + * @param[in] type + * The type describing the variable length data. + * @param[in] data + * Data bytes. + * @param[in] len + * Length of data. * * @return BLE_ERROR_NONE if the advertisement payload was updated based on * matching AD type; otherwise, an appropriate error. @@ -854,11 +1060,14 @@ * Update a particular ADV field in the advertising payload (based on * matching type). * - * @param[in] type The ADV type field describing the variable length data. - * @param[in] data Data bytes. - * @param[in] len Length of data. + * @param[in] type + * The ADV type field describing the variable length data. + * @param[in] data + * Data bytes. + * @param[in] len + * Length of data. * - * @note: If advertisements are enabled, then the update will take effect immediately. + * @note If advertisements are enabled, then the update will take effect immediately. * * @return BLE_ERROR_NONE if the advertisement payload was updated based on * matching AD type; otherwise, an appropriate error. @@ -879,7 +1088,15 @@ /** * Set up a particular, user-constructed advertisement payload for the * underlying stack. It would be uncommon for this API to be used directly; - * there are other APIs to build an advertisement payload (see above). + * there are other APIs to build an advertisement payload (refer to + * Gap::accumulateAdvertisingPayload()). + * + * @param[in] payload + * A reference to a user constructed advertisement + * payload. + * + * @return BLE_ERROR_NONE if the advertisement payload was successfully + * set. */ ble_error_t setAdvertisingPayload(const GapAdvertisingData &payload) { _advPayload = payload; @@ -887,8 +1104,11 @@ } /** - * @return Read back advertising data. Useful for storing and - * restoring payload. + * Get a reference to the advertising payload. + * + * @return Read back advertising data. + * + * @note Useful for storing and restoring payload. */ const GapAdvertisingData &getAdvertisingPayload(void) const { return _advPayload; @@ -898,9 +1118,15 @@ * Accumulate a variable length byte-stream as an AD structure in the * scanResponse payload. * - * @param[in] type The type describing the variable length data. - * @param[in] data Data bytes. - * @param[in] len Length of data. + * @param[in] type + * The type describing the variable length data. + * @param[in] data + * Data bytes. + * @param[in] len + * Length of data. + * + * @return BLE_ERROR_NONE if the data was successfully added to the scan + * response payload. */ ble_error_t accumulateScanResponse(GapAdvertisingData::DataType type, const uint8_t *data, uint8_t len) { ble_error_t rc; @@ -913,10 +1139,10 @@ /** * Reset any scan response prepared from prior calls to - * accumulateScanResponse(). + * Gap::accumulateScanResponse(). * - * Note: This should be followed by a call to setAdvertisingPayload() or - * startAdvertising() before the update takes effect. + * @note This should be followed by a call to Gap::setAdvertisingPayload() or + * Gap::startAdvertising() before the update takes effect. */ void clearScanResponse(void) { _scanResponse.clear(); @@ -925,6 +1151,7 @@ /** * Set up parameters for GAP scanning (observer mode). + * * @param[in] interval * Scan interval (in milliseconds) [valid values lie between 2.5ms and 10.24s]. * @param[in] window @@ -935,17 +1162,19 @@ * Set to True if active-scanning is required. This is used to fetch the * scan response from a peer if possible. * - * The scanning window divided by the interval determines the duty cycle for - * scanning. For example, if the interval is 100ms and the window is 10ms, - * then the controller will scan for 10 percent of the time. It is possible - * to have the interval and window set to the same value. In this case, - * scanning is continuous, with a change of scanning frequency once every - * interval. + * @return BLE_ERROR_NONE if the scan parameters were correctly set. * - * Once the scanning parameters have been configured, scanning can be - * enabled by using startScan(). + * @note The scanning window divided by the interval determines the duty cycle for + * scanning. For example, if the interval is 100ms and the window is 10ms, + * then the controller will scan for 10 percent of the time. It is possible + * to have the interval and window set to the same value. In this case, + * scanning is continuous, with a change of scanning frequency once every + * interval. * - * @Note: The scan interval and window are recommendations to the BLE stack. + * @note Once the scanning parameters have been configured, scanning can be + * enabled by using startScan(). + * + * @note The scan interval and window are recommendations to the BLE stack. */ ble_error_t setScanParams(uint16_t interval = GapScanningParams::SCAN_INTERVAL_MAX, uint16_t window = GapScanningParams::SCAN_WINDOW_MAX, @@ -964,18 +1193,21 @@ /** * Set up the scanInterval parameter for GAP scanning (observer mode). + * * @param[in] interval * Scan interval (in milliseconds) [valid values lie between 2.5ms and 10.24s]. * - * The scanning window divided by the interval determines the duty cycle for - * scanning. For example, if the interval is 100ms and the window is 10ms, - * then the controller will scan for 10 percent of the time. It is possible - * to have the interval and window set to the same value. In this case, - * scanning is continuous, with a change of scanning frequency once every - * interval. + * @return BLE_ERROR_NONE if the scan interval was correctly set. * - * Once the scanning parameters have been configured, scanning can be - * enabled by using startScan(). + * @note The scanning window divided by the interval determines the duty cycle for + * scanning. For example, if the interval is 100ms and the window is 10ms, + * then the controller will scan for 10 percent of the time. It is possible + * to have the interval and window set to the same value. In this case, + * scanning is continuous, with a change of scanning frequency once every + * interval. + * + * @note Once the scanning parameters have been configured, scanning can be + * enabled by using startScan(). */ ble_error_t setScanInterval(uint16_t interval) { return _scanningParams.setInterval(interval); @@ -983,21 +1215,24 @@ /** * Set up the scanWindow parameter for GAP scanning (observer mode). + * * @param[in] window * Scan Window (in milliseconds) [valid values lie between 2.5ms and 10.24s]. * - * The scanning window divided by the interval determines the duty cycle for - * scanning. For example, if the interval is 100ms and the window is 10ms, - * then the controller will scan for 10 percent of the time. It is possible - * to have the interval and window set to the same value. In this case, - * scanning is continuous, with a change of scanning frequency once every - * interval. + * @return BLE_ERROR_NONE if the scan window was correctly set. * - * Once the scanning parameters have been configured, scanning can be - * enabled by using startScan(). + * @note The scanning window divided by the interval determines the duty cycle for + * scanning. For example, if the interval is 100ms and the window is 10ms, + * then the controller will scan for 10 percent of the time. It is possible + * to have the interval and window set to the same value. In this case, + * scanning is continuous, with a change of scanning frequency once every + * interval. * - * If scanning is already active, the updated value of scanWindow will be - * propagated to the underlying BLE stack. + * @note Once the scanning parameters have been configured, scanning can be + * enabled by using startScan(). + * + * @note If scanning is already active, the updated value of scanWindow will be + * propagated to the underlying BLE stack. */ ble_error_t setScanWindow(uint16_t window) { ble_error_t rc; @@ -1015,14 +1250,17 @@ /** * Set up parameters for GAP scanning (observer mode). + * * @param[in] timeout * Scan timeout (in seconds) between 0x0001 and 0xFFFF; 0x0000 disables the timeout. * - * Once the scanning parameters have been configured, scanning can be - * enabled by using startScan(). + * @return BLE_ERROR_NONE if the scan timeout was correctly set. * - * If scanning is already active, the updated value of scanTimeout will be - * propagated to the underlying BLE stack. + * @note Once the scanning parameters have been configured, scanning can be + * enabled by using startScan(). + * + * @note If scanning is already active, the updated value of scanTimeout will be + * propagated to the underlying BLE stack. */ ble_error_t setScanTimeout(uint16_t timeout) { ble_error_t rc; @@ -1039,16 +1277,19 @@ } /** - * Set up parameters for GAP scanning (observer mode). + * Modify the active scanning parameter for GAP scanning (observer mode). + * This is used to fetch the scan response from a peer if possible. + * * @param[in] activeScanning - * Set to True if active-scanning is required. This is used to fetch the - * scan response from a peer if possible. + * Set to True if active-scanning is required. * - * Once the scanning parameters have been configured, scanning can be - * enabled by using startScan(). + * @return BLE_ERROR_NONE if active scanning was successfully set. * - * If scanning is already in progress, then active-scanning will be enabled - * for the underlying BLE stack. + * @note Once the scanning parameters have been configured, scanning can be + * enabled by using startScan(). + * + * @note If scanning is already in progress, then active-scanning will be enabled + * for the underlying BLE stack. */ ble_error_t setActiveScanning(bool activeScanning) { _scanningParams.setActiveScanning(activeScanning); @@ -1069,6 +1310,9 @@ * The application-specific callback to be invoked upon * receiving every advertisement report. This can be passed in * as NULL, in which case scanning may not be enabled at all. + * + * @return BLE_ERROR_NONE if the device successfully started the scan + * procedure. */ ble_error_t startScan(void (*callback)(const AdvertisementCallbackParams_t *params)) { ble_error_t err = BLE_ERROR_NONE; @@ -1083,7 +1327,19 @@ } /** - * Same as above, but this takes an (object, method) pair for a callback. + * Same as Gap::startScan(), but allows the possibility to add an object + * reference and member function as handler for advertisement event + * callbacks. + * + * @param[in] object + * Pointer to the object of a class defining the member callback + * function (@p callbackMember). + * @param[in] callbackMember + * The member callback (within the context of an object) to be + * invoked. + * + * @return BLE_ERROR_NONE if the device successfully started the scan + * procedure. */ template<typename T> ble_error_t startScan(T *object, void (T::*callbackMember)(const AdvertisementCallbackParams_t *params)) { @@ -1120,21 +1376,58 @@ } private: + /** + * Helper function used to set the advertising data in the underlying BLE stack. + * + * @return BLE_ERROR_NONE if the advertising data was successfully set. + */ ble_error_t setAdvertisingData(void) { return setAdvertisingData(_advPayload, _scanResponse); } private: + /** + * Functionality that is BLE stack-dependent and must be implemented by the + * ported. This is a helper function to set the advertising data in the + * BLE stack. + * + * @param[in] advData + * The new advertising data. + * @param[in] scanResponse + * The new scan response data. + * + * @return BLE_ERROR_NONE if the advertising data was set successfully. + */ virtual ble_error_t setAdvertisingData(const GapAdvertisingData &advData, const GapAdvertisingData &scanResponse) = 0; + + /** + * Functionality that is BLE stack-dependent and must be implemented by the + * ported. This is a helper function to start the advertising procedure in + * the underlying BLE stack. + * + * @param[in] + * The advertising parameters. + * + * @return BLE_ERROR_NONE if the advertising procedure was successfully + * started. + */ virtual ble_error_t startAdvertising(const GapAdvertisingParams &) = 0; public: /** - * Accessors to read back currently active advertising params. + * Accessor to read back currently active advertising parameters. + * + * @return A reference to the current advertising parameters. */ GapAdvertisingParams &getAdvertisingParams(void) { return _advParams; } + + /** + * A const alternative to Gap::getAdvertisingParams(). + * + * @return A const reference to the current advertising parameters. + */ const GapAdvertisingParams &getAdvertisingParams(void) const { return _advParams; } @@ -1144,6 +1437,9 @@ * the underlying stack. It would be uncommon for this API to be used * directly; there are other APIs to tweak advertisement parameters * individually. + * + * @param[in] newParams + * The new advertising parameters. */ void setAdvertisingParams(const GapAdvertisingParams &newParams) { _advParams = newParams; @@ -1154,17 +1450,24 @@ /** * Set up a callback for timeout events. Refer to TimeoutSource_t for * possible event types. - * @note It is possible to unregister callbacks using onTimeout().detach(callback) + * + * @param[in] callback + * Event handler being registered. + * + * @note It is possible to unregister callbacks using onTimeout().detach(callback). */ void onTimeout(TimeoutEventCallback_t callback) { timeoutCallbackChain.add(callback); } /** - * @brief provide access to the callchain of timeout event callbacks - * It is possible to register callbacks using onTimeout().add(callback); - * It is possible to unregister callbacks using onTimeout().detach(callback) - * @return The timeout event callbacks chain + * @brief Provide access to the callchain of timeout event callbacks. + * + * @note It is possible to register callbacks using onTimeout().add(callback). + * + * @note It is possible to unregister callbacks using onTimeout().detach(callback). + * + * @return A reference to the timeout event callbacks chain. */ TimeoutEventCallbackChain_t& onTimeout() { return timeoutCallbackChain; @@ -1172,18 +1475,41 @@ /** * Append to a chain of callbacks to be invoked upon GAP connection. + * + * @param[in] callback + * Event handler being registered. + * * @note It is possible to unregister callbacks using onConnection().detach(callback) */ - void onConnection(ConnectionEventCallback_t callback) {connectionCallChain.add(callback);} - - template<typename T> - void onConnection(T *tptr, void (T::*mptr)(const ConnectionCallbackParams_t*)) {connectionCallChain.add(tptr, mptr);} + void onConnection(ConnectionEventCallback_t callback) { + connectionCallChain.add(callback); + } /** - * @brief provide access to the callchain of connection event callbacks - * It is possible to register callbacks using onConnection().add(callback); - * It is possible to unregister callbacks using onConnection().detach(callback) - * @return The connection event callbacks chain + * Same as Gap::onConnection(), but allows the possibility to add an object + * reference and member function as handler for connection event + * callbacks. + * + * @param[in] tptr + * Pointer to the object of a class defining the member callback + * function (@p mptr). + * @param[in] mptr + * The member callback (within the context of an object) to be + * invoked. + */ + template<typename T> + void onConnection(T *tptr, void (T::*mptr)(const ConnectionCallbackParams_t*)) { + connectionCallChain.add(tptr, mptr); + } + + /** + * @brief Provide access to the callchain of connection event callbacks. + * + * @return A reference to the connection event callbacks chain. + * + * @note It is possible to register callbacks using onConnection().add(callback). + * + * @note It is possible to unregister callbacks using onConnection().detach(callback). */ ConnectionEventCallbackChain_t& onConnection() { return connectionCallChain; @@ -1191,18 +1517,41 @@ /** * Append to a chain of callbacks to be invoked upon GAP disconnection. - * @note It is possible to unregister callbacks using onDisconnection().detach(callback) + * + * @param[in] callback + Event handler being registered. + * + * @note It is possible to unregister callbacks using onDisconnection().detach(callback). */ - void onDisconnection(DisconnectionEventCallback_t callback) {disconnectionCallChain.add(callback);} - - template<typename T> - void onDisconnection(T *tptr, void (T::*mptr)(const DisconnectionCallbackParams_t*)) {disconnectionCallChain.add(tptr, mptr);} + void onDisconnection(DisconnectionEventCallback_t callback) { + disconnectionCallChain.add(callback); + } /** - * @brief provide access to the callchain of disconnection event callbacks - * It is possible to register callbacks using onDisconnection().add(callback); - * It is possible to unregister callbacks using onDisconnection().detach(callback) - * @return The disconnection event callbacks chain + * Same as Gap::onDisconnection(), but allows the possibility to add an object + * reference and member function as handler for disconnection event + * callbacks. + * + * @param[in] tptr + * Pointer to the object of a class defining the member callback + * function (@p mptr). + * @param[in] mptr + * The member callback (within the context of an object) to be + * invoked. + */ + template<typename T> + void onDisconnection(T *tptr, void (T::*mptr)(const DisconnectionCallbackParams_t*)) { + disconnectionCallChain.add(tptr, mptr); + } + + /** + * @brief Provide access to the callchain of disconnection event callbacks. + * + * @return A reference to the disconnection event callback chain. + * + * @note It is possible to register callbacks using onDisconnection().add(callback). + * + * @note It is possible to unregister callbacks using onDisconnection().detach(callback). */ DisconnectionEventCallbackChain_t& onDisconnection() { return disconnectionCallChain; @@ -1222,22 +1571,26 @@ * devices, to manage peak current drawn during periods when the radio is on, * or to trigger sensor data collection for transmission in the Radio Event. * - * @param callback - * The application handler to be invoked in response to a radio - * ACTIVE/INACTIVE event. - * - * Or in the other version: - * - * @param tptr - * Pointer to the object of a class defining the member callback - * function (mptr). - * @param mptr - * The member callback (within the context of an object) to be - * invoked in response to a radio ACTIVE/INACTIVE event. + * @param[in] callback + * The application handler to be invoked in response to a radio + * ACTIVE/INACTIVE event. */ void onRadioNotification(void (*callback)(bool param)) { radioNotificationCallback.attach(callback); } + + /** + * Same as Gap::onRadioNotification(), but allows the posibility to + * register an object reference and member function as handler for radio + * notification events. + * + * @param[in] tptr + * Pointer to the object of a class defining the member callback + * function (@p mptr). + * @param[in] mptr + * The member callback (within the context of an object) to be + * invoked in response to a radio ACTIVE/INACTIVE event. + */ template <typename T> void onRadioNotification(T *tptr, void (T::*mptr)(bool)) { radioNotificationCallback.attach(tptr, mptr); @@ -1248,28 +1601,48 @@ * 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 + * @param[in] callback + * The handler that is being registered to be notified of + * shutdown events. + * + * @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 + * @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) + * @note It is possible to unregister a callback using onShutdown().detach(callback) */ void onShutdown(const GapShutdownCallback_t& callback) { shutdownCallChain.add(callback); } + + /** + * Same as Gap::onShutdown(), but allows the posibility to + * register an object reference and member function as handler for shutdown + * events. + * + * @param[in] objPtr + * Pointer to the object of a class defining the member callback + * function (@p memberPtr). + * @param[in] memberPtr + * The member callback (within the context of an object) to be + * invoked in response to a shutdown event. + */ 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 + * @brief Provide access to the callchain of shutdown event callbacks. + * + * @return A reference to the shutdown event callback chain. + * + * @note It is possible to register callbacks using onShutdown().add(callback). + * + * @note It is possible to unregister callbacks using onShutdown().detach(callback). */ GapShutdownCallbackChain_t& onShutdown() { return shutdownCallChain; @@ -1288,7 +1661,7 @@ * * @return BLE_ERROR_NONE on success. * - * @note: Currently a call to reset() does not reset the advertising and + * @note Currently a call to reset() does not reset the advertising and * scan parameters to default values. */ virtual ble_error_t reset(void) { @@ -1319,6 +1692,9 @@ } protected: + /** + * Construct a Gap instance. + */ Gap() : _advParams(), _advPayload(), @@ -1338,6 +1714,26 @@ /* Entry points for the underlying stack to report events back to the user. */ public: + /** + * Helper function that notifies all registered handlers of an occurrence + * of a connection event. This function is meant to be called from the + * BLE stack specific implementation when a connection event occurs. + * + * @param[in] handle + * The ID of the connection that generated the event. + * @param[in] role + * The role of this BLE device in the connection. + * @param[in] peerAddrType + * The peer's BLE address type. + * @param[in] peerAddr + * The peer's BLE address. + * @param[in] ownAddrType + * This device's BLE address type. + * @param[in] ownAddr + * This device's BLE address. + * @param[in] connectionParams + * The parameters configured for this connection. + */ void processConnectionEvent(Handle_t handle, Role_t role, BLEProtocol::AddressType_t peerAddrType, @@ -1354,6 +1750,16 @@ connectionCallChain.call(&callbackParams); } + /** + * Helper function that notifies all registered handlers of an occurrence + * of a disconnection event. This function is meant to be called from the + * BLE stack specific implementation when a disconnection event occurs. + * + * @param[in] handle + * The ID of the connection that generated the event. + * @param[in] reason + * The reason for disconnection. + */ void processDisconnectionEvent(Handle_t handle, DisconnectionReason_t reason) { /* Update Gap state */ --connectionCount; @@ -1365,6 +1771,24 @@ disconnectionCallChain.call(&callbackParams); } + /** + * Helper function that notifies the registered handler of a scanned + * advertisement packet. This function is meant to be called from the + * BLE stack specific implementation when a such event occurs. + * + * @param[in] peerAddr + * The peer's BLE address. + * @param[in] rssi + * The advertisement packet RSSI value. + * @param[in] isScanReponse + * Whether this packet is the response to a scan request. + * @param[in] type + * The type of advertisement. + * @param[in] advertisingDataLen + * Length of the advertisement data. + * @param[in] advertisingData + * Pointer to the advertisement packet's data. + */ void processAdvertisementReport(const BLEProtocol::AddressBytes_t peerAddr, int8_t rssi, bool isScanResponse, @@ -1381,6 +1805,14 @@ onAdvertisementReport.call(¶ms); } + /** + * Helper function that notifies all registered handlers of an occurrence + * of a timeout event. This function is meant to be called from the + * BLE stack specific implementation when a timeout event occurs. + * + * @param[in] source + * The source of the timout event. + */ void processTimeoutEvent(TimeoutSource_t source) { if (source == TIMEOUT_SRC_ADVERTISING) { /* Update gap state if the source is an advertising timeout */ @@ -1392,26 +1824,68 @@ } protected: + /** + * Currently set advertising parameters. + */ GapAdvertisingParams _advParams; + /** + * Currently set advertising data. + */ GapAdvertisingData _advPayload; + /** + * Currently set scanning parameters. + */ GapScanningParams _scanningParams; + /** + * Currently set scan response data. + */ GapAdvertisingData _scanResponse; /** * Total number of open connections. */ uint8_t connectionCount; + /** + * The current GAP state. + */ GapState_t state; + /** + * Whether active scanning is set. This is used to fetch the scan response + * from a peer if possible. + */ bool scanningActive; protected: + /** + * Callchain containing all registered callback handlers for timeout + * events. + */ TimeoutEventCallbackChain_t timeoutCallbackChain; + /** + * The registered callback handler for radio notification events. + */ RadioNotificationEventCallback_t radioNotificationCallback; + /** + * The registered callback handler for scanned advertisement packet + * notifications. + */ AdvertisementReportCallback_t onAdvertisementReport; + /** + * Callchain containing all registered callback handlers for connection + * events. + */ ConnectionEventCallbackChain_t connectionCallChain; + /** + * Callchain containing all registered callback handlers for disconnection + * events. + */ DisconnectionEventCallbackChain_t disconnectionCallChain; private: + /** + * Callchain containing all registered callback handlers for shutdown + * events. + */ GapShutdownCallbackChain_t shutdownCallChain; private: