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/* 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.
*/
#include "ble/DiscoveredCharacteristic.h"
#include "ble/GattClient.h"
ble_error_t
DiscoveredCharacteristic::read(uint16_t offset) const
{
if (!props.read()) {
return BLE_ERROR_OPERATION_NOT_PERMITTED;
}
if (!gattc) {
return BLE_ERROR_INVALID_STATE;
}
return gattc->read(connHandle, valueHandle, offset);
}
struct OneShotReadCallback {
static void launch(GattClient* client, Gap::Handle_t connHandle,
GattAttribute::Handle_t handle, const GattClient::ReadCallback_t& cb) {
OneShotReadCallback* oneShot = new OneShotReadCallback(client, connHandle, handle, cb);
oneShot->attach();
// delete will be made when this callback is called
}
private:
OneShotReadCallback(GattClient* client, Gap::Handle_t connHandle,
GattAttribute::Handle_t handle, const GattClient::ReadCallback_t& cb) :
_client(client),
_connHandle(connHandle),
_handle(handle),
_callback(cb) { }
void attach() {
_client->onDataRead(makeFunctionPointer(this, &OneShotReadCallback::call));
}
void call(const GattReadCallbackParams* params) {
// verifiy that it is the right characteristic on the right connection
if (params->connHandle == _connHandle && params->handle == _handle) {
_callback(params);
_client->onDataRead().detach(makeFunctionPointer(this, &OneShotReadCallback::call));
delete this;
}
}
GattClient* _client;
Gap::Handle_t _connHandle;
GattAttribute::Handle_t _handle;
GattClient::ReadCallback_t _callback;
};
ble_error_t DiscoveredCharacteristic::read(uint16_t offset, const GattClient::ReadCallback_t& onRead) const {
ble_error_t error = read(offset);
if (error) {
return error;
}
OneShotReadCallback::launch(gattc, connHandle, valueHandle, onRead);
return error;
}
ble_error_t
DiscoveredCharacteristic::write(uint16_t length, const uint8_t *value) const
{
if (!props.write()) {
return BLE_ERROR_OPERATION_NOT_PERMITTED;
}
if (!gattc) {
return BLE_ERROR_INVALID_STATE;
}
return gattc->write(GattClient::GATT_OP_WRITE_REQ, connHandle, valueHandle, length, value);
}
ble_error_t
DiscoveredCharacteristic::writeWoResponse(uint16_t length, const uint8_t *value) const
{
if (!props.writeWoResp()) {
return BLE_ERROR_OPERATION_NOT_PERMITTED;
}
if (!gattc) {
return BLE_ERROR_INVALID_STATE;
}
return gattc->write(GattClient::GATT_OP_WRITE_CMD, connHandle, valueHandle, length, value);
}
struct OneShotWriteCallback {
static void launch(GattClient* client, Gap::Handle_t connHandle,
GattAttribute::Handle_t handle, const GattClient::WriteCallback_t& cb) {
OneShotWriteCallback* oneShot = new OneShotWriteCallback(client, connHandle, handle, cb);
oneShot->attach();
// delete will be made when this callback is called
}
private:
OneShotWriteCallback(GattClient* client, Gap::Handle_t connHandle,
GattAttribute::Handle_t handle, const GattClient::WriteCallback_t& cb) :
_client(client),
_connHandle(connHandle),
_handle(handle),
_callback(cb) { }
void attach() {
_client->onDataWritten(makeFunctionPointer(this, &OneShotWriteCallback::call));
}
void call(const GattWriteCallbackParams* params) {
// verifiy that it is the right characteristic on the right connection
if (params->connHandle == _connHandle && params->handle == _handle) {
_callback(params);
_client->onDataWritten().detach(makeFunctionPointer(this, &OneShotWriteCallback::call));
delete this;
}
}
GattClient* _client;
Gap::Handle_t _connHandle;
GattAttribute::Handle_t _handle;
GattClient::WriteCallback_t _callback;
};
ble_error_t DiscoveredCharacteristic::write(uint16_t length, const uint8_t *value, const GattClient::WriteCallback_t& onRead) const {
ble_error_t error = write(length, value);
if (error) {
return error;
}
OneShotWriteCallback::launch(gattc, connHandle, valueHandle, onRead);
return error;
}
ble_error_t DiscoveredCharacteristic::discoverDescriptors(
const CharacteristicDescriptorDiscovery::DiscoveryCallback_t& onCharacteristicDiscovered,
const CharacteristicDescriptorDiscovery::TerminationCallback_t& onTermination) const {
if(!gattc) {
return BLE_ERROR_INVALID_STATE;
}
ble_error_t err = gattc->discoverCharacteristicDescriptors(
*this, onCharacteristicDiscovered, onTermination
);
return err;
}
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