Neil Johnson / microbit-ARMBand

Official Sheffield ARMBand micro:bit program

microbit/microbit-dal/BLE_API/source/DiscoveredCharacteristic.cpp@0:b9164b348919, 2016-10-17 (annotated)

Committer:
MrBedfordVan
Date:
Mon Oct 17 12:41:20 2016 +0000
Revision:
0:b9164b348919
Official Sheffield ARMBand Micro:bit program

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MrBedfordVan 0:b9164b348919 1 /* mbed Microcontroller Library
MrBedfordVan 0:b9164b348919 2 * Copyright (c) 2006-2013 ARM Limited
MrBedfordVan 0:b9164b348919 3 *
MrBedfordVan 0:b9164b348919 4 * Licensed under the Apache License, Version 2.0 (the "License");
MrBedfordVan 0:b9164b348919 5 * you may not use this file except in compliance with the License.
MrBedfordVan 0:b9164b348919 6 * You may obtain a copy of the License at
MrBedfordVan 0:b9164b348919 7 *
MrBedfordVan 0:b9164b348919 8 * http://www.apache.org/licenses/LICENSE-2.0
MrBedfordVan 0:b9164b348919 9 *
MrBedfordVan 0:b9164b348919 10 * Unless required by applicable law or agreed to in writing, software
MrBedfordVan 0:b9164b348919 11 * distributed under the License is distributed on an "AS IS" BASIS,
MrBedfordVan 0:b9164b348919 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MrBedfordVan 0:b9164b348919 13 * See the License for the specific language governing permissions and
MrBedfordVan 0:b9164b348919 14 * limitations under the License.
MrBedfordVan 0:b9164b348919 15 */
MrBedfordVan 0:b9164b348919 16
MrBedfordVan 0:b9164b348919 17 #include "ble/DiscoveredCharacteristic.h"
MrBedfordVan 0:b9164b348919 18 #include "ble/GattClient.h"
MrBedfordVan 0:b9164b348919 19
MrBedfordVan 0:b9164b348919 20 ble_error_t
MrBedfordVan 0:b9164b348919 21 DiscoveredCharacteristic::read(uint16_t offset) const
MrBedfordVan 0:b9164b348919 22 {
MrBedfordVan 0:b9164b348919 23 if (!props.read()) {
MrBedfordVan 0:b9164b348919 24 return BLE_ERROR_OPERATION_NOT_PERMITTED;
MrBedfordVan 0:b9164b348919 25 }
MrBedfordVan 0:b9164b348919 26
MrBedfordVan 0:b9164b348919 27 if (!gattc) {
MrBedfordVan 0:b9164b348919 28 return BLE_ERROR_INVALID_STATE;
MrBedfordVan 0:b9164b348919 29 }
MrBedfordVan 0:b9164b348919 30
MrBedfordVan 0:b9164b348919 31 return gattc->read(connHandle, valueHandle, offset);
MrBedfordVan 0:b9164b348919 32 }
MrBedfordVan 0:b9164b348919 33
MrBedfordVan 0:b9164b348919 34 struct OneShotReadCallback {
MrBedfordVan 0:b9164b348919 35 static void launch(GattClient* client, Gap::Handle_t connHandle,
MrBedfordVan 0:b9164b348919 36 GattAttribute::Handle_t handle, const GattClient::ReadCallback_t& cb) {
MrBedfordVan 0:b9164b348919 37 OneShotReadCallback* oneShot = new OneShotReadCallback(client, connHandle, handle, cb);
MrBedfordVan 0:b9164b348919 38 oneShot->attach();
MrBedfordVan 0:b9164b348919 39 // delete will be made when this callback is called
MrBedfordVan 0:b9164b348919 40 }
MrBedfordVan 0:b9164b348919 41
MrBedfordVan 0:b9164b348919 42 private:
MrBedfordVan 0:b9164b348919 43 OneShotReadCallback(GattClient* client, Gap::Handle_t connHandle,
MrBedfordVan 0:b9164b348919 44 GattAttribute::Handle_t handle, const GattClient::ReadCallback_t& cb) :
MrBedfordVan 0:b9164b348919 45 _client(client),
MrBedfordVan 0:b9164b348919 46 _connHandle(connHandle),
MrBedfordVan 0:b9164b348919 47 _handle(handle),
MrBedfordVan 0:b9164b348919 48 _callback(cb) { }
MrBedfordVan 0:b9164b348919 49
MrBedfordVan 0:b9164b348919 50 void attach() {
MrBedfordVan 0:b9164b348919 51 _client->onDataRead(makeFunctionPointer(this, &OneShotReadCallback::call));
MrBedfordVan 0:b9164b348919 52 }
MrBedfordVan 0:b9164b348919 53
MrBedfordVan 0:b9164b348919 54 void call(const GattReadCallbackParams* params) {
MrBedfordVan 0:b9164b348919 55 // verifiy that it is the right characteristic on the right connection
MrBedfordVan 0:b9164b348919 56 if (params->connHandle == _connHandle && params->handle == _handle) {
MrBedfordVan 0:b9164b348919 57 _callback(params);
MrBedfordVan 0:b9164b348919 58 _client->onDataRead().detach(makeFunctionPointer(this, &OneShotReadCallback::call));
MrBedfordVan 0:b9164b348919 59 delete this;
MrBedfordVan 0:b9164b348919 60 }
MrBedfordVan 0:b9164b348919 61 }
MrBedfordVan 0:b9164b348919 62
MrBedfordVan 0:b9164b348919 63 GattClient* _client;
MrBedfordVan 0:b9164b348919 64 Gap::Handle_t _connHandle;
MrBedfordVan 0:b9164b348919 65 GattAttribute::Handle_t _handle;
MrBedfordVan 0:b9164b348919 66 GattClient::ReadCallback_t _callback;
MrBedfordVan 0:b9164b348919 67 };
MrBedfordVan 0:b9164b348919 68
MrBedfordVan 0:b9164b348919 69 ble_error_t DiscoveredCharacteristic::read(uint16_t offset, const GattClient::ReadCallback_t& onRead) const {
MrBedfordVan 0:b9164b348919 70 ble_error_t error = read(offset);
MrBedfordVan 0:b9164b348919 71 if (error) {
MrBedfordVan 0:b9164b348919 72 return error;
MrBedfordVan 0:b9164b348919 73 }
MrBedfordVan 0:b9164b348919 74
MrBedfordVan 0:b9164b348919 75 OneShotReadCallback::launch(gattc, connHandle, valueHandle, onRead);
MrBedfordVan 0:b9164b348919 76
MrBedfordVan 0:b9164b348919 77 return error;
MrBedfordVan 0:b9164b348919 78 }
MrBedfordVan 0:b9164b348919 79
MrBedfordVan 0:b9164b348919 80 ble_error_t
MrBedfordVan 0:b9164b348919 81 DiscoveredCharacteristic::write(uint16_t length, const uint8_t *value) const
MrBedfordVan 0:b9164b348919 82 {
MrBedfordVan 0:b9164b348919 83 if (!props.write()) {
MrBedfordVan 0:b9164b348919 84 return BLE_ERROR_OPERATION_NOT_PERMITTED;
MrBedfordVan 0:b9164b348919 85 }
MrBedfordVan 0:b9164b348919 86
MrBedfordVan 0:b9164b348919 87 if (!gattc) {
MrBedfordVan 0:b9164b348919 88 return BLE_ERROR_INVALID_STATE;
MrBedfordVan 0:b9164b348919 89 }
MrBedfordVan 0:b9164b348919 90
MrBedfordVan 0:b9164b348919 91 return gattc->write(GattClient::GATT_OP_WRITE_REQ, connHandle, valueHandle, length, value);
MrBedfordVan 0:b9164b348919 92 }
MrBedfordVan 0:b9164b348919 93
MrBedfordVan 0:b9164b348919 94 ble_error_t
MrBedfordVan 0:b9164b348919 95 DiscoveredCharacteristic::writeWoResponse(uint16_t length, const uint8_t *value) const
MrBedfordVan 0:b9164b348919 96 {
MrBedfordVan 0:b9164b348919 97 if (!props.writeWoResp()) {
MrBedfordVan 0:b9164b348919 98 return BLE_ERROR_OPERATION_NOT_PERMITTED;
MrBedfordVan 0:b9164b348919 99 }
MrBedfordVan 0:b9164b348919 100
MrBedfordVan 0:b9164b348919 101 if (!gattc) {
MrBedfordVan 0:b9164b348919 102 return BLE_ERROR_INVALID_STATE;
MrBedfordVan 0:b9164b348919 103 }
MrBedfordVan 0:b9164b348919 104
MrBedfordVan 0:b9164b348919 105 return gattc->write(GattClient::GATT_OP_WRITE_CMD, connHandle, valueHandle, length, value);
MrBedfordVan 0:b9164b348919 106 }
MrBedfordVan 0:b9164b348919 107
MrBedfordVan 0:b9164b348919 108 struct OneShotWriteCallback {
MrBedfordVan 0:b9164b348919 109 static void launch(GattClient* client, Gap::Handle_t connHandle,
MrBedfordVan 0:b9164b348919 110 GattAttribute::Handle_t handle, const GattClient::WriteCallback_t& cb) {
MrBedfordVan 0:b9164b348919 111 OneShotWriteCallback* oneShot = new OneShotWriteCallback(client, connHandle, handle, cb);
MrBedfordVan 0:b9164b348919 112 oneShot->attach();
MrBedfordVan 0:b9164b348919 113 // delete will be made when this callback is called
MrBedfordVan 0:b9164b348919 114 }
MrBedfordVan 0:b9164b348919 115
MrBedfordVan 0:b9164b348919 116 private:
MrBedfordVan 0:b9164b348919 117 OneShotWriteCallback(GattClient* client, Gap::Handle_t connHandle,
MrBedfordVan 0:b9164b348919 118 GattAttribute::Handle_t handle, const GattClient::WriteCallback_t& cb) :
MrBedfordVan 0:b9164b348919 119 _client(client),
MrBedfordVan 0:b9164b348919 120 _connHandle(connHandle),
MrBedfordVan 0:b9164b348919 121 _handle(handle),
MrBedfordVan 0:b9164b348919 122 _callback(cb) { }
MrBedfordVan 0:b9164b348919 123
MrBedfordVan 0:b9164b348919 124 void attach() {
MrBedfordVan 0:b9164b348919 125 _client->onDataWritten(makeFunctionPointer(this, &OneShotWriteCallback::call));
MrBedfordVan 0:b9164b348919 126 }
MrBedfordVan 0:b9164b348919 127
MrBedfordVan 0:b9164b348919 128 void call(const GattWriteCallbackParams* params) {
MrBedfordVan 0:b9164b348919 129 // verifiy that it is the right characteristic on the right connection
MrBedfordVan 0:b9164b348919 130 if (params->connHandle == _connHandle && params->handle == _handle) {
MrBedfordVan 0:b9164b348919 131 _callback(params);
MrBedfordVan 0:b9164b348919 132 _client->onDataWritten().detach(makeFunctionPointer(this, &OneShotWriteCallback::call));
MrBedfordVan 0:b9164b348919 133 delete this;
MrBedfordVan 0:b9164b348919 134 }
MrBedfordVan 0:b9164b348919 135 }
MrBedfordVan 0:b9164b348919 136
MrBedfordVan 0:b9164b348919 137 GattClient* _client;
MrBedfordVan 0:b9164b348919 138 Gap::Handle_t _connHandle;
MrBedfordVan 0:b9164b348919 139 GattAttribute::Handle_t _handle;
MrBedfordVan 0:b9164b348919 140 GattClient::WriteCallback_t _callback;
MrBedfordVan 0:b9164b348919 141 };
MrBedfordVan 0:b9164b348919 142
MrBedfordVan 0:b9164b348919 143 ble_error_t DiscoveredCharacteristic::write(uint16_t length, const uint8_t *value, const GattClient::WriteCallback_t& onRead) const {
MrBedfordVan 0:b9164b348919 144 ble_error_t error = write(length, value);
MrBedfordVan 0:b9164b348919 145 if (error) {
MrBedfordVan 0:b9164b348919 146 return error;
MrBedfordVan 0:b9164b348919 147 }
MrBedfordVan 0:b9164b348919 148
MrBedfordVan 0:b9164b348919 149 OneShotWriteCallback::launch(gattc, connHandle, valueHandle, onRead);
MrBedfordVan 0:b9164b348919 150
MrBedfordVan 0:b9164b348919 151 return error;
MrBedfordVan 0:b9164b348919 152 }
MrBedfordVan 0:b9164b348919 153
MrBedfordVan 0:b9164b348919 154 ble_error_t DiscoveredCharacteristic::discoverDescriptors(
MrBedfordVan 0:b9164b348919 155 const CharacteristicDescriptorDiscovery::DiscoveryCallback_t& onCharacteristicDiscovered,
MrBedfordVan 0:b9164b348919 156 const CharacteristicDescriptorDiscovery::TerminationCallback_t& onTermination) const {
MrBedfordVan 0:b9164b348919 157
MrBedfordVan 0:b9164b348919 158 if(!gattc) {
MrBedfordVan 0:b9164b348919 159 return BLE_ERROR_INVALID_STATE;
MrBedfordVan 0:b9164b348919 160 }
MrBedfordVan 0:b9164b348919 161
MrBedfordVan 0:b9164b348919 162 ble_error_t err = gattc->discoverCharacteristicDescriptors(
MrBedfordVan 0:b9164b348919 163 *this, onCharacteristicDiscovered, onTermination
MrBedfordVan 0:b9164b348919 164 );
MrBedfordVan 0:b9164b348919 165
MrBedfordVan 0:b9164b348919 166 return err;
MrBedfordVan 0:b9164b348919 167 }