Diff: source/nRF5xServiceDiscovery.cpp

Revision:

638:c90ae1400bf2

Parent:

637:f7faad332abc

Child:

639:fdeb2820ef26

--- a/source/nRF5xServiceDiscovery.cpp	Mon Apr 11 16:15:24 2016 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,310 +0,0 @@
-/* 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 "nRF5xServiceDiscovery.h"
-
-ble_error_t
-nRF5xServiceDiscovery::launchCharacteristicDiscovery(Gap::Handle_t connectionHandle,
-                                                     Gap::Handle_t startHandle,
-                                                     Gap::Handle_t endHandle)
-{
-    characteristicDiscoveryStarted(connectionHandle);
-
-    ble_gattc_handle_range_t handleRange = {
-        .start_handle = startHandle,
-        .end_handle   = endHandle
-    };
-    uint32_t rc = sd_ble_gattc_characteristics_discover(connectionHandle, &handleRange);
-    ble_error_t err = BLE_ERROR_NONE;
-
-    switch (rc) {
-        case NRF_SUCCESS:
-            err = BLE_ERROR_NONE;
-            break;
-        case BLE_ERROR_INVALID_CONN_HANDLE:
-        case NRF_ERROR_INVALID_ADDR:
-            err = BLE_ERROR_INVALID_PARAM;
-            break;
-        case NRF_ERROR_BUSY:
-            err = BLE_STACK_BUSY;
-            break;
-        case NRF_ERROR_INVALID_STATE:
-            err = BLE_ERROR_INVALID_STATE;
-            break;
-        default:
-            err = BLE_ERROR_UNSPECIFIED;
-            break;
-    }
-
-    if (err) {
-        terminateCharacteristicDiscovery(err);
-    }
-    return err;
-}
-
-void
-nRF5xServiceDiscovery::setupDiscoveredServices(const ble_gattc_evt_prim_srvc_disc_rsp_t *response)
-{
-    serviceIndex = 0;
-    numServices  = response->count;
-
-    /* Account for the limitation on the number of discovered services we can handle at a time. */
-    if (numServices > BLE_DB_DISCOVERY_MAX_SRV) {
-        numServices = BLE_DB_DISCOVERY_MAX_SRV;
-    }
-
-    serviceUUIDDiscoveryQueue.reset();
-    for (unsigned serviceIndex = 0; serviceIndex < numServices; serviceIndex++) {
-        if (response->services[serviceIndex].uuid.type == BLE_UUID_TYPE_UNKNOWN) {
-            serviceUUIDDiscoveryQueue.enqueue(serviceIndex);
-            services[serviceIndex].setup(response->services[serviceIndex].handle_range.start_handle,
-                                         response->services[serviceIndex].handle_range.end_handle);
-        } else {
-            services[serviceIndex].setup(response->services[serviceIndex].uuid.uuid,
-                                         response->services[serviceIndex].handle_range.start_handle,
-                                         response->services[serviceIndex].handle_range.end_handle);
-        }
-    }
-
-    /* Trigger discovery of service UUID if necessary. */
-    if (serviceUUIDDiscoveryQueue.getCount()) {
-        serviceUUIDDiscoveryQueue.triggerFirst();
-    }
-}
-
-void
-nRF5xServiceDiscovery::setupDiscoveredCharacteristics(const ble_gattc_evt_char_disc_rsp_t *response)
-{
-    numCharacteristics  = response->count;
-
-    /* Account for the limitation on the number of discovered characteristics we can handle at a time. */
-    if (numCharacteristics > BLE_DB_DISCOVERY_MAX_CHAR_PER_SRV) {
-        numCharacteristics = BLE_DB_DISCOVERY_MAX_CHAR_PER_SRV;
-    }
-
-    charUUIDDiscoveryQueue.reset();
-    for (unsigned charIndex = 0; charIndex < numCharacteristics; charIndex++) {
-        if (response->chars[charIndex].uuid.type == BLE_UUID_TYPE_UNKNOWN) {
-            charUUIDDiscoveryQueue.enqueue(charIndex);
-            characteristics[charIndex].setup(gattc,
-                                             connHandle,
-                                             response->chars[charIndex].char_props,
-                                             response->chars[charIndex].handle_decl,
-                                             response->chars[charIndex].handle_value);
-        } else {
-            characteristics[charIndex].setup(gattc,
-                                             connHandle,
-                                             response->chars[charIndex].uuid.uuid,
-                                             response->chars[charIndex].char_props,
-                                             response->chars[charIndex].handle_decl,
-                                             response->chars[charIndex].handle_value);
-        }
-    }
-
-    /* Trigger discovery of char UUID if necessary. */
-    if (charUUIDDiscoveryQueue.getCount()) {
-        charUUIDDiscoveryQueue.triggerFirst();
-    }
-}
-
-void
-nRF5xServiceDiscovery::progressCharacteristicDiscovery(void)
-{
-    if (state != CHARACTERISTIC_DISCOVERY_ACTIVE) {
-        return;
-    }
-
-    if ((discoveredCharacteristic != nRF5xDiscoveredCharacteristic()) && (numCharacteristics > 0)) {
-        discoveredCharacteristic.setLastHandle(characteristics[0].getDeclHandle() - 1);
-
-        if ((matchingCharacteristicUUID == UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) ||
-            ((matchingCharacteristicUUID == discoveredCharacteristic.getUUID()) &&
-             (matchingServiceUUID != UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)))) {
-            if (characteristicCallback) {
-                characteristicCallback(&discoveredCharacteristic);
-            }
-        }
-    }
-
-    for (uint8_t i = 0; i < numCharacteristics; ++i) {
-        if (state != CHARACTERISTIC_DISCOVERY_ACTIVE) {
-            return;
-        }
-
-        if (i == (numCharacteristics - 1)) {
-            discoveredCharacteristic = characteristics[i];
-            break;
-        } else {
-            characteristics[i].setLastHandle(characteristics[i + 1].getDeclHandle() - 1);
-        }
-
-        if ((matchingCharacteristicUUID == UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) ||
-            ((matchingCharacteristicUUID == characteristics[i].getUUID()) &&
-             (matchingServiceUUID != UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)))) {
-            if (characteristicCallback) {
-                characteristicCallback(&characteristics[i]);
-            }
-        }
-    }
-
-    if (state != CHARACTERISTIC_DISCOVERY_ACTIVE) {
-        return;
-    }
-
-    Gap::Handle_t startHandle = (numCharacteristics > 0) ? characteristics[numCharacteristics - 1].getValueHandle() + 1 : SRV_DISC_END_HANDLE;
-    Gap::Handle_t endHandle   = services[serviceIndex].getEndHandle();
-    resetDiscoveredCharacteristics(); /* Note: resetDiscoveredCharacteristics() must come after fetching start and end Handles. */
-
-    if (startHandle < endHandle) {
-        ble_gattc_handle_range_t handleRange = {
-            .start_handle = startHandle,
-            .end_handle   = endHandle
-        };
-        if (sd_ble_gattc_characteristics_discover(connHandle, &handleRange) != NRF_SUCCESS) {
-            terminateCharacteristicDiscovery(BLE_ERROR_UNSPECIFIED);
-        }
-    } else {
-        terminateCharacteristicDiscovery(BLE_ERROR_NONE);
-    }
-}
-
-void
-nRF5xServiceDiscovery::progressServiceDiscovery(void)
-{
-    /* Iterate through the previously discovered services cached in services[]. */
-    while ((state == SERVICE_DISCOVERY_ACTIVE) && (serviceIndex < numServices)) {
-        if ((matchingServiceUUID == UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN)) ||
-            (matchingServiceUUID == services[serviceIndex].getUUID())) {
-
-            if (serviceCallback && (matchingCharacteristicUUID == UUID::ShortUUIDBytes_t(BLE_UUID_UNKNOWN))) {
-                serviceCallback(&services[serviceIndex]);
-            }
-
-            if ((state == SERVICE_DISCOVERY_ACTIVE) && characteristicCallback) {
-                launchCharacteristicDiscovery(connHandle, services[serviceIndex].getStartHandle(), services[serviceIndex].getEndHandle());
-            } else {
-                serviceIndex++;
-            }
-        } else {
-            serviceIndex++;
-        }
-    }
-
-    /* Relaunch discovery of new services beyond the last entry cached in services[]. */
-    if ((state == SERVICE_DISCOVERY_ACTIVE) && (numServices > 0) && (serviceIndex > 0)) {
-        /* Determine the ending handle of the last cached service. */
-        Gap::Handle_t endHandle = services[serviceIndex - 1].getEndHandle();
-        resetDiscoveredServices(); /* Note: resetDiscoveredServices() must come after fetching endHandle. */
-
-        if (endHandle == SRV_DISC_END_HANDLE) {
-            terminateServiceDiscovery();
-        } else {
-            if (sd_ble_gattc_primary_services_discover(connHandle, endHandle, NULL) != NRF_SUCCESS) {
-                terminateServiceDiscovery();
-            }
-        }
-    }
-}
-
-void
-nRF5xServiceDiscovery::ServiceUUIDDiscoveryQueue::triggerFirst(void)
-{
-    while (numIndices) { /* loop until a call to char_value_by_uuid_read() succeeds or we run out of pending indices. */
-        parentDiscoveryObject->state = DISCOVER_SERVICE_UUIDS;
-
-        unsigned serviceIndex = getFirst();
-        ble_uuid_t uuid = {
-            .uuid = BLE_UUID_SERVICE_PRIMARY,
-            .type = BLE_UUID_TYPE_BLE,
-        };
-        ble_gattc_handle_range_t handleRange = {
-            .start_handle = parentDiscoveryObject->services[serviceIndex].getStartHandle(),
-            .end_handle   = parentDiscoveryObject->services[serviceIndex].getEndHandle(),
-        };
-        if (sd_ble_gattc_char_value_by_uuid_read(parentDiscoveryObject->connHandle, &uuid, &handleRange) == NRF_SUCCESS) {
-            return;
-        }
-
-        /* Skip this service if we fail to launch a read for its service-declaration
-         * attribute. Its UUID will remain INVALID, and it may not match any filters. */
-        dequeue();
-    }
-
-    /* Switch back to service discovery upon exhausting the service-indices pending UUID discovery. */
-    if (parentDiscoveryObject->state == DISCOVER_SERVICE_UUIDS) {
-        parentDiscoveryObject->state = SERVICE_DISCOVERY_ACTIVE;
-    }
-}
-
-void
-nRF5xServiceDiscovery::CharUUIDDiscoveryQueue::triggerFirst(void)
-{
-    while (numIndices) { /* loop until a call to char_value_by_uuid_read() succeeds or we run out of pending indices. */
-        parentDiscoveryObject->state = DISCOVER_CHARACTERISTIC_UUIDS;
-
-        unsigned charIndex = getFirst();
-        ble_uuid_t uuid = {
-            .uuid = BLE_UUID_CHARACTERISTIC,
-            .type = BLE_UUID_TYPE_BLE,
-        };
-        ble_gattc_handle_range_t handleRange = { };
-        handleRange.start_handle = parentDiscoveryObject->characteristics[charIndex].getDeclHandle();
-        handleRange.end_handle   = parentDiscoveryObject->characteristics[charIndex].getDeclHandle() + 1;
-        if (sd_ble_gattc_char_value_by_uuid_read(parentDiscoveryObject->connHandle, &uuid, &handleRange) == NRF_SUCCESS) {
-            return;
-        }
-
-        /* Skip this service if we fail to launch a read for its service-declaration
-         * attribute. Its UUID will remain INVALID, and it may not match any filters. */
-        dequeue();
-    }
-
-    /* Switch back to service discovery upon exhausting the service-indices pending UUID discovery. */
-    if (parentDiscoveryObject->state == DISCOVER_CHARACTERISTIC_UUIDS) {
-        parentDiscoveryObject->state = CHARACTERISTIC_DISCOVERY_ACTIVE;
-    }
-}
-
-void
-nRF5xServiceDiscovery::processDiscoverUUIDResponse(const ble_gattc_evt_char_val_by_uuid_read_rsp_t *response)
-{
-    if (state == DISCOVER_SERVICE_UUIDS) {
-        if ((response->count == 1) && (response->value_len == UUID::LENGTH_OF_LONG_UUID)) {
-            UUID::LongUUIDBytes_t uuid;
-            memcpy(uuid, response->handle_value[0].p_value, UUID::LENGTH_OF_LONG_UUID);
-
-            unsigned serviceIndex = serviceUUIDDiscoveryQueue.dequeue();
-            services[serviceIndex].setupLongUUID(uuid, UUID::LSB);
-
-            serviceUUIDDiscoveryQueue.triggerFirst();
-        } else {
-            serviceUUIDDiscoveryQueue.dequeue();
-        }
-    } else if (state == DISCOVER_CHARACTERISTIC_UUIDS) {
-        if ((response->count == 1) && (response->value_len == UUID::LENGTH_OF_LONG_UUID + 1 /* props */ + 2 /* value handle */)) {
-            UUID::LongUUIDBytes_t uuid;
-
-            memcpy(uuid, &(response->handle_value[0].p_value[3]), UUID::LENGTH_OF_LONG_UUID);
-
-            unsigned charIndex = charUUIDDiscoveryQueue.dequeue();
-            characteristics[charIndex].setupLongUUID(uuid, UUID::LSB);
-
-            charUUIDDiscoveryQueue.triggerFirst();
-        } else {
-            charUUIDDiscoveryQueue.dequeue();
-        }
-    }
-}
\ No newline at end of file