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Allow user of GattClient to call write on a discovered characteristic with

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the continuation function
This commit is contained in:
Vincent Coubard 2015-11-23 10:54:25 +00:00
parent 00cabcefea
commit 381345fe65
2 changed files with 54 additions and 7 deletions
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5
ble/DiscoveredCharacteristic.h
View file

@ -137,6 +137,11 @@ public:
*/
ble_error_t write(uint16_t length, const uint8_t *value) const;
/**
* Same as above but register the callback wich will be called once the data has been written
*/
ble_error_t write(uint16_t length, const uint8_t *value, const GattClient::WriteCallback_t& onRead) const;
void setupLongUUID(UUID::LongUUIDBytes_t longUUID) {
uuid.setupLong(longUUID);
}

56
source/DiscoveredCharacteristic.cpp
View file

@ -31,7 +31,6 @@ DiscoveredCharacteristic::read(uint16_t offset) const
return gattc->read(connHandle, valueHandle, offset);
}
struct OneShotReadCallback {
static void launch(GattClient* client, Gap::Handle_t connHandle,
GattAttribute::Handle_t handle,const GattClient::ReadCallback_t& cb) {
@ -45,7 +44,7 @@ private:
GattAttribute::Handle_t handle, const GattClient::ReadCallback_t& cb) :
_client(client),
_connHandle(connHandle),
_handle(handle),
_handle(handle),
_callback(cb) { }
void attach() {
@ -54,7 +53,7 @@ private:
void call(const GattReadCallbackParams* params) {
// verifiy that it is the right characteristic on the right connection
if(params->connHandle == _connHandle && params->handle == _handle) {
if (params->connHandle == _connHandle && params->handle == _handle) {
_callback(params);
_client->onDataRead().detach(makeFunctionPointer(this, &OneShotReadCallback::call));
delete this;
@ -69,7 +68,7 @@ private:
ble_error_t DiscoveredCharacteristic::read(uint16_t offset, const GattClient::ReadCallback_t& onRead) const {
ble_error_t error = read(offset);
if(error) {
if (error) {
return error;
}
@ -78,9 +77,6 @@ ble_error_t DiscoveredCharacteristic::read(uint16_t offset, const GattClient::Re
return error;
}
ble_error_t
DiscoveredCharacteristic::write(uint16_t length, const uint8_t *value) const
{
@ -109,6 +105,52 @@ DiscoveredCharacteristic::writeWoResponse(uint16_t length, const uint8_t *value)
return gattc->write(GattClient::GATT_OP_WRITE_CMD, connHandle, valueHandle, length, value);
}
struct OneShotWriteCallback {
static void launch(GattClient* client, Gap::Handle_t connHandle,
GattAttribute::Handle_t handle,const GattClient::WriteCallback_t& cb) {
OneShotWriteCallback* oneShot = new OneShotWriteCallback(client, connHandle, handle, cb);
oneShot->attach();
// delete will be made when this callback is called
}
private:
OneShotWriteCallback(GattClient* client, Gap::Handle_t connHandle,
GattAttribute::Handle_t handle, const GattClient::WriteCallback_t& cb) :
_client(client),
_connHandle(connHandle),
_handle(handle),
_callback(cb) { }
void attach() {
_client->onDataWritten(makeFunctionPointer(this, &OneShotWriteCallback::call));
}
void call(const GattWriteCallbackParams* params) {
// verifiy that it is the right characteristic on the right connection
if (params->connHandle == _connHandle && params->handle == _handle) {
_callback(params);
_client->onDataWritten().detach(makeFunctionPointer(this, &OneShotWriteCallback::call));
delete this;
}
}
GattClient* _client;
Gap::Handle_t _connHandle;
GattAttribute::Handle_t _handle;
GattClient::WriteCallback_t _callback;
};
ble_error_t DiscoveredCharacteristic::write(uint16_t length, const uint8_t *value, const GattClient::WriteCallback_t& onRead) const {
ble_error_t error = write(length, value);
if (error) {
return error;
}
OneShotWriteCallback::launch(gattc, connHandle, valueHandle, onRead);
return error;
}
ble_error_t
DiscoveredCharacteristic::discoverDescriptors(DescriptorCallback_t callback, const UUID &matchingUUID) const
{