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Server: Add onSubscribe() callback for characteristics. (#21)

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Server: Add onSubscribe() callback for characteristics.

Adds a new method to NimBLECharacteristicCallbacks that gets called when a client
changes it's subscription status.

* Remove NimBLE2902 class.

As the NimBLE2902 class usefulness was only related to callback functions that were replaced
by the NimBLECharacteristicCallbacks:onSubscribe() method this removes the NimBLE2902 class and
moves all subscription handling to NimBLECharacteristic.

* Update documents and examples to reflect this change.

* Add getSubscribedCount() to get the number of subscribed clients.
This commit is contained in:
h2zero
2020-07-27 21:11:38 -06:00
committed by GitHub
parent fe4586a3ca
commit 4723b1cc53
9 changed files with 93 additions and 236 deletions
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10
src/NimBLEServer.cpp
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@@ -182,10 +182,6 @@ void NimBLEServer::start() {
// we do it now.
if((chr->m_properties & BLE_GATT_CHR_F_INDICATE) ||
(chr->m_properties & BLE_GATT_CHR_F_NOTIFY)) {
if(nullptr == chr->getDescriptorByUUID(uint16_t(0x2902))) {
chr->createDescriptor(uint16_t(0x2902));
}
m_notifyChrVec.push_back(chr);
}
}
@@ -303,9 +299,9 @@ size_t NimBLEServer::getConnectedCount() {
} // BLE_GAP_EVENT_DISCONNECT
case BLE_GAP_EVENT_SUBSCRIBE: {
NIMBLE_LOGI(LOG_TAG, "subscribe event; cur_notify=%d\n value handle; "
"val_handle=%d\n",
event->subscribe.cur_notify, event->subscribe.attr_handle);
NIMBLE_LOGI(LOG_TAG, "subscribe event; attr_handle=%d, subscribed: %s",
event->subscribe.attr_handle,
(event->subscribe.cur_notify ? "true":"false"));
for(auto &it : server->m_notifyChrVec) {
if(it->getHandle() == event->subscribe.attr_handle) {