Greg Steiert / maxim_dev

Dependents:   sensomed

features/FEATURE_BLE/source/DiscoveredCharacteristic.cpp@0:0e018d759a2a, 2016-11-08 (annotated)

Committer:
switches
Date:
Tue Nov 08 18:27:11 2016 +0000
Revision:
0:0e018d759a2a
Initial commit

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switches 0:0e018d759a2a 1 /* mbed Microcontroller Library
switches 0:0e018d759a2a 2 * Copyright (c) 2006-2013 ARM Limited
switches 0:0e018d759a2a 3 *
switches 0:0e018d759a2a 4 * Licensed under the Apache License, Version 2.0 (the "License");
switches 0:0e018d759a2a 5 * you may not use this file except in compliance with the License.
switches 0:0e018d759a2a 6 * You may obtain a copy of the License at
switches 0:0e018d759a2a 7 *
switches 0:0e018d759a2a 8 * http://www.apache.org/licenses/LICENSE-2.0
switches 0:0e018d759a2a 9 *
switches 0:0e018d759a2a 10 * Unless required by applicable law or agreed to in writing, software
switches 0:0e018d759a2a 11 * distributed under the License is distributed on an "AS IS" BASIS,
switches 0:0e018d759a2a 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
switches 0:0e018d759a2a 13 * See the License for the specific language governing permissions and
switches 0:0e018d759a2a 14 * limitations under the License.
switches 0:0e018d759a2a 15 */
switches 0:0e018d759a2a 16
switches 0:0e018d759a2a 17 #include "ble/DiscoveredCharacteristic.h"
switches 0:0e018d759a2a 18 #include "ble/GattClient.h"
switches 0:0e018d759a2a 19
switches 0:0e018d759a2a 20 ble_error_t
switches 0:0e018d759a2a 21 DiscoveredCharacteristic::read(uint16_t offset) const
switches 0:0e018d759a2a 22 {
switches 0:0e018d759a2a 23 if (!props.read()) {
switches 0:0e018d759a2a 24 return BLE_ERROR_OPERATION_NOT_PERMITTED;
switches 0:0e018d759a2a 25 }
switches 0:0e018d759a2a 26
switches 0:0e018d759a2a 27 if (!gattc) {
switches 0:0e018d759a2a 28 return BLE_ERROR_INVALID_STATE;
switches 0:0e018d759a2a 29 }
switches 0:0e018d759a2a 30
switches 0:0e018d759a2a 31 return gattc->read(connHandle, valueHandle, offset);
switches 0:0e018d759a2a 32 }
switches 0:0e018d759a2a 33
switches 0:0e018d759a2a 34 struct OneShotReadCallback {
switches 0:0e018d759a2a 35 static void launch(GattClient* client, Gap::Handle_t connHandle,
switches 0:0e018d759a2a 36 GattAttribute::Handle_t handle, const GattClient::ReadCallback_t& cb) {
switches 0:0e018d759a2a 37 OneShotReadCallback* oneShot = new OneShotReadCallback(client, connHandle, handle, cb);
switches 0:0e018d759a2a 38 oneShot->attach();
switches 0:0e018d759a2a 39 // delete will be made when this callback is called
switches 0:0e018d759a2a 40 }
switches 0:0e018d759a2a 41
switches 0:0e018d759a2a 42 private:
switches 0:0e018d759a2a 43 OneShotReadCallback(GattClient* client, Gap::Handle_t connHandle,
switches 0:0e018d759a2a 44 GattAttribute::Handle_t handle, const GattClient::ReadCallback_t& cb) :
switches 0:0e018d759a2a 45 _client(client),
switches 0:0e018d759a2a 46 _connHandle(connHandle),
switches 0:0e018d759a2a 47 _handle(handle),
switches 0:0e018d759a2a 48 _callback(cb) { }
switches 0:0e018d759a2a 49
switches 0:0e018d759a2a 50 void attach() {
switches 0:0e018d759a2a 51 _client->onDataRead(makeFunctionPointer(this, &OneShotReadCallback::call));
switches 0:0e018d759a2a 52 }
switches 0:0e018d759a2a 53
switches 0:0e018d759a2a 54 void call(const GattReadCallbackParams* params) {
switches 0:0e018d759a2a 55 // verifiy that it is the right characteristic on the right connection
switches 0:0e018d759a2a 56 if (params->connHandle == _connHandle && params->handle == _handle) {
switches 0:0e018d759a2a 57 _callback(params);
switches 0:0e018d759a2a 58 _client->onDataRead().detach(makeFunctionPointer(this, &OneShotReadCallback::call));
switches 0:0e018d759a2a 59 delete this;
switches 0:0e018d759a2a 60 }
switches 0:0e018d759a2a 61 }
switches 0:0e018d759a2a 62
switches 0:0e018d759a2a 63 GattClient* _client;
switches 0:0e018d759a2a 64 Gap::Handle_t _connHandle;
switches 0:0e018d759a2a 65 GattAttribute::Handle_t _handle;
switches 0:0e018d759a2a 66 GattClient::ReadCallback_t _callback;
switches 0:0e018d759a2a 67 };
switches 0:0e018d759a2a 68
switches 0:0e018d759a2a 69 ble_error_t DiscoveredCharacteristic::read(uint16_t offset, const GattClient::ReadCallback_t& onRead) const {
switches 0:0e018d759a2a 70 ble_error_t error = read(offset);
switches 0:0e018d759a2a 71 if (error) {
switches 0:0e018d759a2a 72 return error;
switches 0:0e018d759a2a 73 }
switches 0:0e018d759a2a 74
switches 0:0e018d759a2a 75 OneShotReadCallback::launch(gattc, connHandle, valueHandle, onRead);
switches 0:0e018d759a2a 76
switches 0:0e018d759a2a 77 return error;
switches 0:0e018d759a2a 78 }
switches 0:0e018d759a2a 79
switches 0:0e018d759a2a 80 ble_error_t
switches 0:0e018d759a2a 81 DiscoveredCharacteristic::write(uint16_t length, const uint8_t *value) const
switches 0:0e018d759a2a 82 {
switches 0:0e018d759a2a 83 if (!props.write()) {
switches 0:0e018d759a2a 84 return BLE_ERROR_OPERATION_NOT_PERMITTED;
switches 0:0e018d759a2a 85 }
switches 0:0e018d759a2a 86
switches 0:0e018d759a2a 87 if (!gattc) {
switches 0:0e018d759a2a 88 return BLE_ERROR_INVALID_STATE;
switches 0:0e018d759a2a 89 }
switches 0:0e018d759a2a 90
switches 0:0e018d759a2a 91 return gattc->write(GattClient::GATT_OP_WRITE_REQ, connHandle, valueHandle, length, value);
switches 0:0e018d759a2a 92 }
switches 0:0e018d759a2a 93
switches 0:0e018d759a2a 94 ble_error_t
switches 0:0e018d759a2a 95 DiscoveredCharacteristic::writeWoResponse(uint16_t length, const uint8_t *value) const
switches 0:0e018d759a2a 96 {
switches 0:0e018d759a2a 97 if (!props.writeWoResp()) {
switches 0:0e018d759a2a 98 return BLE_ERROR_OPERATION_NOT_PERMITTED;
switches 0:0e018d759a2a 99 }
switches 0:0e018d759a2a 100
switches 0:0e018d759a2a 101 if (!gattc) {
switches 0:0e018d759a2a 102 return BLE_ERROR_INVALID_STATE;
switches 0:0e018d759a2a 103 }
switches 0:0e018d759a2a 104
switches 0:0e018d759a2a 105 return gattc->write(GattClient::GATT_OP_WRITE_CMD, connHandle, valueHandle, length, value);
switches 0:0e018d759a2a 106 }
switches 0:0e018d759a2a 107
switches 0:0e018d759a2a 108 struct OneShotWriteCallback {
switches 0:0e018d759a2a 109 static void launch(GattClient* client, Gap::Handle_t connHandle,
switches 0:0e018d759a2a 110 GattAttribute::Handle_t handle, const GattClient::WriteCallback_t& cb) {
switches 0:0e018d759a2a 111 OneShotWriteCallback* oneShot = new OneShotWriteCallback(client, connHandle, handle, cb);
switches 0:0e018d759a2a 112 oneShot->attach();
switches 0:0e018d759a2a 113 // delete will be made when this callback is called
switches 0:0e018d759a2a 114 }
switches 0:0e018d759a2a 115
switches 0:0e018d759a2a 116 private:
switches 0:0e018d759a2a 117 OneShotWriteCallback(GattClient* client, Gap::Handle_t connHandle,
switches 0:0e018d759a2a 118 GattAttribute::Handle_t handle, const GattClient::WriteCallback_t& cb) :
switches 0:0e018d759a2a 119 _client(client),
switches 0:0e018d759a2a 120 _connHandle(connHandle),
switches 0:0e018d759a2a 121 _handle(handle),
switches 0:0e018d759a2a 122 _callback(cb) { }
switches 0:0e018d759a2a 123
switches 0:0e018d759a2a 124 void attach() {
switches 0:0e018d759a2a 125 _client->onDataWritten(makeFunctionPointer(this, &OneShotWriteCallback::call));
switches 0:0e018d759a2a 126 }
switches 0:0e018d759a2a 127
switches 0:0e018d759a2a 128 void call(const GattWriteCallbackParams* params) {
switches 0:0e018d759a2a 129 // verifiy that it is the right characteristic on the right connection
switches 0:0e018d759a2a 130 if (params->connHandle == _connHandle && params->handle == _handle) {
switches 0:0e018d759a2a 131 _callback(params);
switches 0:0e018d759a2a 132 _client->onDataWritten().detach(makeFunctionPointer(this, &OneShotWriteCallback::call));
switches 0:0e018d759a2a 133 delete this;
switches 0:0e018d759a2a 134 }
switches 0:0e018d759a2a 135 }
switches 0:0e018d759a2a 136
switches 0:0e018d759a2a 137 GattClient* _client;
switches 0:0e018d759a2a 138 Gap::Handle_t _connHandle;
switches 0:0e018d759a2a 139 GattAttribute::Handle_t _handle;
switches 0:0e018d759a2a 140 GattClient::WriteCallback_t _callback;
switches 0:0e018d759a2a 141 };
switches 0:0e018d759a2a 142
switches 0:0e018d759a2a 143 ble_error_t DiscoveredCharacteristic::write(uint16_t length, const uint8_t *value, const GattClient::WriteCallback_t& onRead) const {
switches 0:0e018d759a2a 144 ble_error_t error = write(length, value);
switches 0:0e018d759a2a 145 if (error) {
switches 0:0e018d759a2a 146 return error;
switches 0:0e018d759a2a 147 }
switches 0:0e018d759a2a 148
switches 0:0e018d759a2a 149 OneShotWriteCallback::launch(gattc, connHandle, valueHandle, onRead);
switches 0:0e018d759a2a 150
switches 0:0e018d759a2a 151 return error;
switches 0:0e018d759a2a 152 }
switches 0:0e018d759a2a 153
switches 0:0e018d759a2a 154 ble_error_t DiscoveredCharacteristic::discoverDescriptors(
switches 0:0e018d759a2a 155 const CharacteristicDescriptorDiscovery::DiscoveryCallback_t& onCharacteristicDiscovered,
switches 0:0e018d759a2a 156 const CharacteristicDescriptorDiscovery::TerminationCallback_t& onTermination) const {
switches 0:0e018d759a2a 157
switches 0:0e018d759a2a 158 if(!gattc) {
switches 0:0e018d759a2a 159 return BLE_ERROR_INVALID_STATE;
switches 0:0e018d759a2a 160 }
switches 0:0e018d759a2a 161
switches 0:0e018d759a2a 162 ble_error_t err = gattc->discoverCharacteristicDescriptors(
switches 0:0e018d759a2a 163 *this, onCharacteristicDiscovered, onTermination
switches 0:0e018d759a2a 164 );
switches 0:0e018d759a2a 165
switches 0:0e018d759a2a 166 return err;
switches 0:0e018d759a2a 167 }