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[Server] Implement remove Characteristics/Descriptors. (#54)

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This allows for adding and removing of characteristics and descriptors after initial setup of the server.
When used it will send a service changed notification to all clients.
The changes will not take effect until all clients have disconnected and advertising restarted.
This commit is contained in:
h2zero
2021-07-30 20:56:52 -06:00
committed by GitHub
parent 0a2714c169
commit 6be6a111d0
8 changed files with 195 additions and 55 deletions
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65
src/NimBLECharacteristic.cpp
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@@ -45,14 +45,15 @@ NimBLECharacteristic::NimBLECharacteristic(const char* uuid, uint16_t properties
* @param [in] pService - pointer to the service instance this characteristic belongs to.
*/
NimBLECharacteristic::NimBLECharacteristic(const NimBLEUUID &uuid, uint16_t properties, NimBLEService* pService) {
m_uuid = uuid;
m_handle = NULL_HANDLE;
m_properties = properties;
m_pCallbacks = &defaultCallback;
m_pService = pService;
m_value = "";
m_valMux = portMUX_INITIALIZER_UNLOCKED;
m_timestamp = 0;
m_uuid = uuid;
m_handle = NULL_HANDLE;
m_properties = properties;
m_pCallbacks = &defaultCallback;
m_pService = pService;
m_value = "";
m_valMux = portMUX_INITIALIZER_UNLOCKED;
m_timestamp = 0;
m_removed = 0;
} // NimBLECharacteristic
/**
@@ -95,21 +96,63 @@ NimBLEDescriptor* NimBLECharacteristic::createDescriptor(const NimBLEUUID &uuid,
}
addDescriptor(pDescriptor);
return pDescriptor;
} // createDescriptor
/**
* @brief Add a descriptor to the characteristic.
* @param [in] A pointer to the descriptor to add.
* @param [in] pDescriptor A pointer to the descriptor to add.
*/
void NimBLECharacteristic::addDescriptor(NimBLEDescriptor *pDescriptor) {
bool foundRemoved = false;
if(pDescriptor->m_removed > 0) {
for(auto& it : m_dscVec) {
if(it == pDescriptor) {
foundRemoved = true;
pDescriptor->m_removed = 0;
}
}
}
if(!foundRemoved) {
m_dscVec.push_back(pDescriptor);
}
pDescriptor->setCharacteristic(this);
m_dscVec.push_back(pDescriptor);
NimBLEDevice::getServer()->serviceChanged();
}
/**
* @brief Remove a descriptor from the characterisitc.
* @param[in] pDescriptor A pointer to the descriptor instance to remove from the characterisitc.
* @param[in] deleteDsc If true it will delete the descriptor instance and free it's resources.
*/
void NimBLECharacteristic::removeDescriptor(NimBLEDescriptor *pDescriptor, bool deleteDsc) {
// Check if the descriptor was already removed and if so, check if this
// is being called to delete the object and do so if requested.
// Otherwise, ignore the call and return.
if(pDescriptor->m_removed > 0) {
if(deleteDsc) {
for(auto it = m_dscVec.begin(); it != m_dscVec.end(); ++it) {
if ((*it) == pDescriptor) {
delete *it;
m_dscVec.erase(it);
break;
}
}
}
return;
}
pDescriptor->m_removed = deleteDsc ? NIMBLE_ATT_REMOVE_DELETE : NIMBLE_ATT_REMOVE_HIDE;
NimBLEDevice::getServer()->serviceChanged();
} // removeDescriptor
/**
* @brief Return the BLE Descriptor for the given UUID.
* @param [in] uuid The UUID of the descriptor.