Diff: source/nRF5xCharacteristicDescriptorDiscoverer.cpp

Revision:

638:c90ae1400bf2

Parent:

637:f7faad332abc

Child:

639:fdeb2820ef26

--- a/source/nRF5xCharacteristicDescriptorDiscoverer.cpp	Mon Apr 11 16:15:24 2016 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,235 +0,0 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2006-2015 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 "nRF5xCharacteristicDescriptorDiscoverer.h"
-#include "ble_err.h"
-#include "ble/DiscoveredCharacteristicDescriptor.h"
-
-nRF5xCharacteristicDescriptorDiscoverer::nRF5xCharacteristicDescriptorDiscoverer() :
-    discoveryRunning() {
-    // nothing to do
-}
-
-nRF5xCharacteristicDescriptorDiscoverer::~nRF5xCharacteristicDescriptorDiscoverer() {
-    // nothing to do
-}
-
-ble_error_t nRF5xCharacteristicDescriptorDiscoverer::launch(
-    const DiscoveredCharacteristic& characteristic,
-    const CharacteristicDescriptorDiscovery::DiscoveryCallback_t& discoveryCallback,
-    const CharacteristicDescriptorDiscovery::TerminationCallback_t& terminationCallback
-) {
-    Gap::Handle_t connHandle = characteristic.getConnectionHandle();
-    // it is ok to deduce that the start handle for descriptors is after
-    // the characteristic declaration and the characteristic value declaration
-    // see BLUETOOTH SPECIFICATION Version 4.2 [Vol 3, Part G] (3.3)
-    Gap::Handle_t descriptorStartHandle = characteristic.getDeclHandle() + 2;
-    Gap::Handle_t descriptorEndHandle = characteristic.getLastHandle();
-
-    // check if there is any descriptor to discover
-    if (descriptorEndHandle < descriptorStartHandle) {
-        CharacteristicDescriptorDiscovery::TerminationCallbackParams_t termParams = {
-            characteristic,
-            BLE_ERROR_NONE
-        };
-        terminationCallback.call(&termParams);
-        return BLE_ERROR_NONE;
-    }
-
-    // check if we can run this discovery
-    if (isConnectionInUse(connHandle)) {
-        return BLE_STACK_BUSY;
-    }
-
-    // get a new discovery slot, if none are available, just return
-    Discovery* discovery = getAvailableDiscoverySlot();
-    if(discovery == NULL) {
-        return BLE_STACK_BUSY;
-    }
-
-    // try to launch the discovery
-    ble_error_t err = gattc_descriptors_discover(connHandle, descriptorStartHandle, descriptorEndHandle);
-    if(!err) {
-        // commit the new discovery to its slot
-        *discovery = Discovery(characteristic, discoveryCallback, terminationCallback);
-    }
-
-    return err;
-}
-
-bool nRF5xCharacteristicDescriptorDiscoverer::isActive(const DiscoveredCharacteristic& characteristic) const {
-    for(size_t i = 0; i < MAXIMUM_CONCURRENT_CONNECTIONS_COUNT; ++i) {
-        if(discoveryRunning[i].getCharacteristic() == characteristic) {
-            return true;
-        }
-    }
-    return false;
-}
-
-void nRF5xCharacteristicDescriptorDiscoverer::requestTerminate(const DiscoveredCharacteristic& characteristic) {
-    Discovery* discovery = findRunningDiscovery(characteristic);
-    if(discovery) {
-        // call terminate anyway
-        terminate(discovery, BLE_ERROR_NONE);
-    }
-}
-
-void nRF5xCharacteristicDescriptorDiscoverer::process(uint16_t connectionHandle, const ble_gattc_evt_desc_disc_rsp_t& descriptors) {
-    Discovery* discovery = findRunningDiscovery(connectionHandle);
-    // the discovery has been removed
-    if(!discovery) {
-        return;
-    }
-
-    for (uint16_t i = 0; i < descriptors.count; ++i) {
-        discovery->process(
-            descriptors.descs[i].handle, UUID(descriptors.descs[i].uuid.uuid)
-        );
-    }
-
-    // prepare the next discovery request (if needed)
-    uint16_t startHandle = descriptors.descs[descriptors.count - 1].handle + 1;
-    uint16_t endHandle = discovery->getCharacteristic().getLastHandle();
-
-    if(startHandle > endHandle) {
-        terminate(discovery, BLE_ERROR_NONE);
-        return;
-    }
-
-    ble_error_t err = gattc_descriptors_discover(connectionHandle, startHandle, endHandle);
-    if(err) {
-        terminate(discovery, err);
-        return;
-    }
-}
-
-void nRF5xCharacteristicDescriptorDiscoverer::terminate(uint16_t handle, ble_error_t err) {
-    Discovery* discovery = findRunningDiscovery(handle);
-    // the discovery has already been terminated
-    if(!discovery) {
-        return;
-    }
-
-    terminate(discovery, err);
-}
-
-void nRF5xCharacteristicDescriptorDiscoverer::terminate(Discovery* discovery, ble_error_t err) {
-    // temporary copy, user code can try to launch a new discovery in the onTerminate
-    // callback. So, this discovery should not appear in such case.
-    Discovery tmp = *discovery;
-    *discovery = Discovery();
-    tmp.terminate(err);
-}
-
-nRF5xCharacteristicDescriptorDiscoverer::Discovery*
-nRF5xCharacteristicDescriptorDiscoverer::findRunningDiscovery(const DiscoveredCharacteristic& characteristic) {
-    for(size_t i = 0; i < MAXIMUM_CONCURRENT_CONNECTIONS_COUNT; ++i) {
-        if((discoveryRunning[i].getCharacteristic() == characteristic) &&
-           (discoveryRunning[i].isEmpty() == false)) {
-            return &discoveryRunning[i];
-        }
-    }
-    return NULL;
-}
-
-nRF5xCharacteristicDescriptorDiscoverer::Discovery*
-nRF5xCharacteristicDescriptorDiscoverer::findRunningDiscovery(uint16_t handle) {
-    for(size_t i = 0; i < MAXIMUM_CONCURRENT_CONNECTIONS_COUNT; ++i) {
-        if((discoveryRunning[i].getCharacteristic().getConnectionHandle() == handle) &&
-           (discoveryRunning[i].isEmpty() == false)) {
-            return &discoveryRunning[i];
-        }
-    }
-    return NULL;
-}
-
-nRF5xCharacteristicDescriptorDiscoverer::Discovery*
-nRF5xCharacteristicDescriptorDiscoverer::getAvailableDiscoverySlot() {
-    for(size_t i = 0; i < MAXIMUM_CONCURRENT_CONNECTIONS_COUNT; ++i) {
-        if(discoveryRunning[i].isEmpty()) {
-            return &discoveryRunning[i];
-        }
-    }
-    return NULL;
-}
-
-bool nRF5xCharacteristicDescriptorDiscoverer::isConnectionInUse(uint16_t connHandle) {
-     return findRunningDiscovery(connHandle) != NULL;
-}
-
-ble_error_t nRF5xCharacteristicDescriptorDiscoverer::gattc_descriptors_discover(
-    uint16_t connection_handle, uint16_t start_handle, uint16_t end_handle) {
-
-    ble_gattc_handle_range_t discoveryRange = {
-        start_handle,
-        end_handle
-    };
-    uint32_t err = sd_ble_gattc_descriptors_discover(connection_handle, &discoveryRange);
-
-    switch(err) {
-        case NRF_SUCCESS:
-            return BLE_ERROR_NONE;
-        case BLE_ERROR_INVALID_CONN_HANDLE:
-            return BLE_ERROR_INVALID_PARAM;
-        case NRF_ERROR_INVALID_ADDR:
-            return BLE_ERROR_PARAM_OUT_OF_RANGE;
-        case NRF_ERROR_BUSY:
-            return BLE_STACK_BUSY;
-        default:
-            return BLE_ERROR_UNSPECIFIED;
-    }
-}
-
-// implementation of nRF5xCharacteristicDescriptorDiscoverer::Discovery
-
-nRF5xCharacteristicDescriptorDiscoverer::Discovery::Discovery() :
-    characteristic(), onDiscovery(), onTerminate() {
-}
-
-nRF5xCharacteristicDescriptorDiscoverer::Discovery::Discovery(
-    const DiscoveredCharacteristic& c, const DiscoveryCallback_t& dCb, const TerminationCallback_t& tCb) :
-    characteristic(c), onDiscovery(dCb), onTerminate(tCb) {
-}
-
-void nRF5xCharacteristicDescriptorDiscoverer::Discovery::process(
-    GattAttribute::Handle_t handle, const UUID& uuid) {
-    CharacteristicDescriptorDiscovery::DiscoveryCallbackParams_t params = {
-        characteristic,
-        DiscoveredCharacteristicDescriptor(
-            characteristic.getGattClient(),
-            characteristic.getConnectionHandle(),
-            handle,
-            uuid
-        )
-    };
-    onDiscovery.call(&params);
-}
-
-void nRF5xCharacteristicDescriptorDiscoverer::Discovery::terminate(ble_error_t err) {
-    CharacteristicDescriptorDiscovery::TerminationCallbackParams_t params = {
-        characteristic,
-        err
-    };
-
-    onTerminate.call(&params);
-}
-
-bool nRF5xCharacteristicDescriptorDiscoverer::Discovery::isEmpty() const {
-    return *this == Discovery();
-}
-
-const DiscoveredCharacteristic& nRF5xCharacteristicDescriptorDiscoverer::Discovery::getCharacteristic() const {
-    return characteristic;
-}
\ No newline at end of file