Wataru Wakutsu
extend
Fork of
BLE_API
by 
Bluetooth Low Energy
Diff: ble/DiscoveredCharacteristic.h
- Revision:
- 710:b2e1a2660ec2
- Parent:
- 566:6681c6e0d7c0
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ble/DiscoveredCharacteristic.h Fri Jun 19 15:53:28 2015 +0100
@@ -0,0 +1,191 @@
+/* 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 __DISCOVERED_CHARACTERISTIC_H__
+#define __DISCOVERED_CHARACTERISTIC_H__
+
+#include "UUID.h"
+#include "Gap.h"
+#include "GattAttribute.h"
+#include "GattClient.h"
+
+/**
+ * Structure for holding information about the service and the characteristics
+ * found during the discovery process.
+ */
+class DiscoveredCharacteristic {
+public:
+ struct Properties_t {
+ uint8_t _broadcast :1; /**< Broadcasting of the value permitted. */
+ uint8_t _read :1; /**< Reading the value permitted. */
+ uint8_t _writeWoResp :1; /**< Writing the value with Write Command permitted. */
+ uint8_t _write :1; /**< Writing the value with Write Request permitted. */
+ uint8_t _notify :1; /**< Notications of the value permitted. */
+ uint8_t _indicate :1; /**< Indications of the value permitted. */
+ uint8_t _authSignedWrite :1; /**< Writing the value with Signed Write Command permitted. */
+
+ public:
+ bool broadcast(void) const {return _broadcast; }
+ bool read(void) const {return _read; }
+ bool writeWoResp(void) const {return _writeWoResp; }
+ bool write(void) const {return _write; }
+ bool notify(void) const {return _notify; }
+ bool indicate(void) const {return _indicate; }
+ bool authSignedWrite(void) const {return _authSignedWrite;}
+
+ private:
+ operator uint8_t() const; /* disallow implicit conversion into an integer */
+ operator unsigned() const; /* disallow implicit conversion into an integer */
+ };
+
+ /**
+ * Structure for holding information about the service and the characteristics
+ * found during the discovery process.
+ */
+ struct DiscoveredDescriptor {
+ GattAttribute::Handle_t handle; /**< Descriptor Handle. */
+ UUID uuid; /**< Descriptor UUID. */
+ };
+
+ /**
+ * Callback type for when a characteristic descriptor is found during descriptor-
+ * discovery. The receiving function is passed in a pointer to a
+ * DiscoveredDescriptor object which will remain valid for the lifetime
+ * of the callback. Memory for this object is owned by the BLE_API eventing
+ * framework. The application can safely make a persistent shallow-copy of
+ * this object in order to work with the characteristic beyond the callback.
+ */
+ typedef void (*DescriptorCallback_t)(const DiscoveredDescriptor *);
+
+ /**
+ * Initiate (or continue) a read for the value attribute, optionally at a
+ * given offset. If the Characteristic or Descriptor to be read is longer
+ * than ATT_MTU - 1, this function must be called multiple times with
+ * appropriate offset to read the complete value.
+ *
+ * @return BLE_ERROR_NONE if a read has been initiated, else
+ * BLE_ERROR_INVALID_STATE if some internal state about the connection is invalid, or
+ * BLE_STACK_BUSY if some client procedure already in progress, or
+ * BLE_ERROR_OPERATION_NOT_PERMITTED due to the characteristic's properties.
+ */
+ ble_error_t read(uint16_t offset = 0) const;
+
+ /**
+ * Perform a write without response procedure.
+ *
+ * @param length
+ * The amount of data being written.
+ * @param value
+ * The bytes being written.
+ *
+ * @note It is important to note that a write without response will generate
+ * an onDataSent() callback when the packet has been transmitted. There
+ * will be a BLE-stack specific limit to the number of pending
+ * writeWoResponse operations; the user may want to use the onDataSent()
+ * callback for flow-control.
+ *
+ * @retval BLE_ERROR_NONE Successfully started the Write procedure, else
+ * BLE_ERROR_INVALID_STATE if some internal state about the connection is invalid, or
+ * BLE_STACK_BUSY if some client procedure already in progress, or
+ * BLE_ERROR_NO_MEM if there are no available buffers left to process the request, or
+ * BLE_ERROR_OPERATION_NOT_PERMITTED due to the characteristic's properties.
+ */
+ ble_error_t writeWoResponse(uint16_t length, const uint8_t *value) const;
+
+ /**
+ * Initiate a GATT Characteristic Descriptor Discovery procedure for descriptors within this characteristic.
+ *
+ * @param callback
+ * @param matchingUUID
+ * filter for descriptors. Defaults to wildcard which will discover all descriptors.
+ *
+ * @return BLE_ERROR_NONE if descriptor discovery is launched successfully; else an appropriate error.
+ */
+ ble_error_t discoverDescriptors(DescriptorCallback_t callback, const UUID &matchingUUID = UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) const;
+
+ /**
+ * Perform a write procedure.
+ *
+ * @param length
+ * The amount of data being written.
+ * @param value
+ * The bytes being written.
+ *
+ * @note It is important to note that a write will generate
+ * an onDataWritten() callback when the peer acknowledges the request.
+ *
+ * @retval BLE_ERROR_NONE Successfully started the Write procedure, else
+ * BLE_ERROR_INVALID_STATE if some internal state about the connection is invalid, or
+ * BLE_STACK_BUSY if some client procedure already in progress, or
+ * BLE_ERROR_NO_MEM if there are no available buffers left to process the request, or
+ * BLE_ERROR_OPERATION_NOT_PERMITTED due to the characteristic's properties.
+ */
+ ble_error_t write(uint16_t length, const uint8_t *value) const;
+
+ static void setupOnDataRead(GattClient::ReadCallback_t callback) {
+ onDataReadCallback = callback;
+ }
+
+ static void setupOnDataWrite(GattClient::WriteCallback_t callback) {
+ onDataWriteCallback = callback;
+ }
+
+ void setupLongUUID(UUID::LongUUIDBytes_t longUUID) {
+ uuid.setupLong(longUUID);
+ }
+
+public:
+ UUID::ShortUUIDBytes_t getShortUUID(void) const {
+ return uuid.getShortUUID();
+ }
+
+ const Properties_t& getProperties(void) const {
+ return props;
+ }
+
+ const GattAttribute::Handle_t& getDeclHandle(void) const {
+ return declHandle;
+ }
+ const GattAttribute::Handle_t& getValueHandle(void) const {
+ return valueHandle;
+ }
+
+public:
+ DiscoveredCharacteristic() : gattc(NULL),
+ uuid(UUID::ShortUUIDBytes_t(0)),
+ props(),
+ declHandle(GattAttribute::INVALID_HANDLE),
+ valueHandle(GattAttribute::INVALID_HANDLE) {
+ /* empty */
+ }
+
+protected:
+ GattClient *gattc;
+
+protected:
+ UUID uuid;
+ Properties_t props;
+ GattAttribute::Handle_t declHandle;
+ GattAttribute::Handle_t valueHandle;
+
+ Gap::Handle_t connHandle;
+
+public:
+ static GattClient::ReadCallback_t onDataReadCallback;
+ static GattClient::WriteCallback_t onDataWriteCallback;
+};
+
+#endif /*__DISCOVERED_CHARACTERISTIC_H__*/
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