72 lines
2.7 KiB
C++
72 lines
2.7 KiB
C++
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/* mbed Microcontroller Library
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* Copyright (c) 2006-2013 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "DiscoveredCharacteristic.h"
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#include "GattClient.h"
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DiscoveredCharacteristic::ReadCallback_t DiscoveredCharacteristic::onDataReadCallback;
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/**
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* Initiate (or continue) a read for the value attribute, optionally at a
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* given offset. If the Characteristic or Descriptor to be read is longer
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* than ATT_MTU - 1, this function must be called multiple times with
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* appropriate offset to read the complete value.
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*
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* @return BLE_ERROR_NONE if a read has been initiated, else
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* BLE_ERROR_INVALID_STATE if some internal state about the connection is invalid, or
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* BLE_STACK_BUSY if some client procedure already in progress, or
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* BLE_ERROR_OPERATION_NOT_PERMITTED due to the characteristic's properties.
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*/
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ble_error_t
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DiscoveredCharacteristic::read(uint16_t offset) const
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{
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if (!props.read()) {
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return BLE_ERROR_OPERATION_NOT_PERMITTED;
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}
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return gattc->read(connHandle, valueHandle, offset);
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}
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/**
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* Perform a write without response procedure.
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*
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* @param length
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* The amount of data being written.
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* @param value
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* The bytes being written.
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*
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* @note It is important to note that a write without response will
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* <b>consume an application buffer</b>, and will therefore
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* generate a onDataSent() callback when the packet has been
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* transmitted. The application should ensure that the buffer is
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* valid until the callback.
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*
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* @retval BLE_ERROR_NONE Successfully started the Write procedure, else
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* BLE_ERROR_INVALID_STATE if some internal state about the connection is invalid, or
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* BLE_STACK_BUSY if some client procedure already in progress, or
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* BLE_ERROR_NO_MEM if there are no available buffers left to process the request, or
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* BLE_ERROR_OPERATION_NOT_PERMITTED due to the characteristic's properties.
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*/
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ble_error_t
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DiscoveredCharacteristic::writeWoResponse(uint16_t length, const uint8_t *value) const
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{
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if (!props.writeWoResp()) {
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return BLE_ERROR_OPERATION_NOT_PERMITTED;
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}
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return gattc->write(GattClient::OP_WRITE_CMD, connHandle, length, value);
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}
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