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Reconnect mechanism done in avaliable funcion. Avaliable is called in MIDI.read() in funtional code. FIXED: Write method now works. TODO: Clear debug comments and structure the code. Change scanDone and doConnect global variables inside AdviceCB class. BUG: If input buffer is completly full it is not possible send or recive anything

This commit is contained in:
Roberto 2021-06-05 14:19:52 +02:00
parent 75069b93ea
commit b8831e4d3e
1 changed files with 233 additions and 125 deletions
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354
src/hardware/BLEMIDI_Client_ESP32.h
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@ -9,9 +9,14 @@ static bool scanDone = false;
/** Define a class to handle the callbacks when advertisments are received */
class AdvertisedDeviceCallbacks : public NimBLEAdvertisedDeviceCallbacks
{
public:
int test = 0;
protected:
void onResult(NimBLEAdvertisedDevice *advertisedDevice)
{
test++;
Serial.println(test);
Serial.print("Advertised Device found: ");
Serial.println(advertisedDevice->toString().c_str());
if (advertisedDevice->isAdvertisingService(NimBLEUUID(SERVICE_UUID)))
@ -40,11 +45,17 @@ class BLEMIDI_Client_ESP32
private:
BLEClient *_client = nullptr;
BLEAdvertising *_advertising = nullptr;
BLECharacteristic *_characteristic = nullptr;
BLERemoteCharacteristic *_characteristic = nullptr;
BLERemoteService *pSvc = nullptr;
//NimBLERemoteDescriptor *pDsc = nullptr;
BLEMIDI_Transport<class BLEMIDI_Client_ESP32> *_bleMidiTransport = nullptr;
friend class AdvertisedDeviceCallbacks;
friend class MyClientCallbacks;
friend class MIDI_NAMESPACE::MidiInterface<BLEMIDI_Transport<BLEMIDI_Client_ESP32>, MySettings>;
AdvertisedDeviceCallbacks myAdvCB;
protected:
QueueHandle_t mRxQueue;
@ -58,17 +69,44 @@ public:
void write(uint8_t *data, uint8_t length)
{
_characteristic->setValue(data, length);
//_characteristic->notify();
_characteristic->writeValue(data, length, true);
myAdvCB.test++;
}
bool available(byte *pvBuffer)
{
if (_client == nullptr || !_client->isConnected())
{
//Serial.println("No Conectado");
if (doConnect)
{
doConnect = false;
Serial.println("intentar conexion");
if (connect())
{
Serial.println("reconnected");
}
else
{
Serial.println("Rescan");
scanDone=false;
NimBLEDevice::getScan()->start(3, scanEndedCB);
}
}
else if (scanDone)
{
scanDone=false;
Serial.println("Rescan 2");
NimBLEDevice::getScan()->start(3, scanEndedCB);
}
}
// return 1 byte from the Queue
return xQueueReceive(mRxQueue, (void *)pvBuffer, 0); // return immediately when the queue is empty
}
void add(byte value)
void
add(byte value)
{
// called from BLE-MIDI, to add it to a buffer here
xQueueSend(mRxQueue, &value, portMAX_DELAY);
@ -80,11 +118,17 @@ public:
_bleMidiTransport->receive(buffer, length);
}
void connectCallbacks(MIDI_NAMESPACE::MidiInterface<BLEMIDI_Transport<BLEMIDI_Client_ESP32>, MySettings> *MIDIcallback);
void connected()
{
Serial.println("!!");
if (_bleMidiTransport->_connectedCallback)
{
Serial.println("@");
_bleMidiTransport->_connectedCallback();
}
}
void disconnected()
{
@ -93,6 +137,9 @@ public:
}
void notifyCB(NimBLERemoteCharacteristic *pRemoteCharacteristic, uint8_t *pData, size_t length, bool isNotify);
void scan();
bool connect();
};
class MyClientCallbacks : public BLEClientCallbacks
@ -108,16 +155,20 @@ protected:
void onConnect(BLEClient *pClient)
{
Serial.println("Connected");
Serial.println("##Connected##");
/** After connection we should change the parameters if we don't need fast response times.
* These settings are 150ms interval, 0 latency, 450ms timout.
* Timeout should be a multiple of the interval, minimum is 100ms.
* I find a multiple of 3-5 * the interval works best for quick response/reconnect.
* Min interval: 120 * 1.25ms = 150, Max interval: 120 * 1.25ms = 150, 0 latency, 60 * 10ms = 600ms timeout
*/
//pClient->updateConnParams
pClient->updateConnParams(6, 32, 0, 40);
if (_bluetoothEsp32)
{
Serial.println("??");
_bluetoothEsp32->connected();
}
};
void onDisconnect(BLEClient *pClient)
@ -125,13 +176,12 @@ protected:
Serial.print(pClient->getPeerAddress().toString().c_str());
Serial.println(" Disconnected - Starting scan");
if (_bluetoothEsp32){
if (_bluetoothEsp32)
{
_bluetoothEsp32->disconnected();
}
NimBLEDevice::getScan()->start(3,scanEndedCB);
NimBLEDevice::getScan()->start(3, scanEndedCB);
}
bool onConnParamsUpdateRequest(NimBLEClient *pClient, const ble_gap_upd_params *params)
{
@ -171,11 +221,168 @@ void BLEMIDI_Client_ESP32::notifyCB(NimBLERemoteCharacteristic *pRemoteCharacter
receive(pData, length);
}
void BLEMIDI_Client_ESP32::scan()
{
// Retrieve a Scanner and set the callback we want to use to be informed when we
// have detected a new device. Specify that we want active scanning and start the
// scan to run for 5 seconds.
NimBLEScan *pBLEScan = BLEDevice::getScan();
pBLEScan->setAdvertisedDeviceCallbacks(&myAdvCB);
pBLEScan->setInterval(1500);
pBLEScan->setWindow(500);
pBLEScan->setActiveScan(true);
//doScan = true;
Serial.println("Scanning...");
pBLEScan->start(10, scanEndedCB);
};
bool BLEMIDI_Client_ESP32::connect()
{
Serial.println("TryConnection...");
using namespace std::placeholders;
/** Check if we have a client we should reuse first **/
if (NimBLEDevice::getClientListSize())
{
/** Special case when we already know this device, we send false as the
* second argument in connect() to prevent refreshing the service database.
* This saves considerable time and power.
*/
_client = NimBLEDevice::getClientByPeerAddress(advDevice->getAddress());
if (_client)
{
if (!_client->connect(advDevice, false))
{
Serial.println("Reconnect failed");
return false;
}
Serial.println("Reconnected client");
_client->setConnectionParams(12, 12, 0, 51);
if (_characteristic->canNotify())
{
Serial.println("CAN NOTIFY");
if (!_characteristic->subscribe(true, std::bind(&BLEMIDI_Client_ESP32::notifyCB, this, _1, _2, _3, _4)))
{
Serial.println("error");
/** Disconnect if subscribe failed */
_client->disconnect();
return false;
}
}
}
/** We don't already have a client that knows this device,
* we will check for a client that is disconnected that we can use.
*/
else
{
_client = NimBLEDevice::getDisconnectedClient();
}
}
/** No client to reuse? Create a new one. */
if (!_client)
{
if (NimBLEDevice::getClientListSize() >= NIMBLE_MAX_CONNECTIONS)
{
Serial.println("Max clients reached - no more connections available");
return false;
}
_client = BLEDevice::createClient();
_client->setClientCallbacks(new MyClientCallbacks(this), false);
/** Set initial connection parameters: These settings are 15ms interval, 0 latency, 120ms timout.
* These settings are safe for 3 clients to connect reliably, can go faster if you have less
* connections. Timeout should be a multiple of the interval, minimum is 100ms.
* Min interval: 12 * 1.25ms = 15, Max interval: 12 * 1.25ms = 15, 0 latency, 51 * 10ms = 510ms timeout
*/
_client->setConnectionParams(12, 12, 0, 51);
/** Set how long we are willing to wait for the connection to complete (seconds), default is 30. */
_client->setConnectTimeout(5);
Serial.println("#Connection");
if (!_client->connect(advDevice))
{
/** Created a client but failed to connect, don't need to keep it as it has no data */
NimBLEDevice::deleteClient(_client);
_client=nullptr;
Serial.println("Failed to connect, deleted client");
return false;
}
vTaskDelay(100);
if (!_client->isConnected())
{
if (!_client->connect(advDevice))
{
Serial.println("Failed to connect");
return false;
}
}
else
{
Serial.print("Connected to: ");
Serial.println(_client->getPeerAddress().toString().c_str());
Serial.print("RSSI: ");
Serial.println(_client->getRssi());
}
/** Now we can read/write/subscribe the charateristics of the services we are interested in */
pSvc = _client->getService(SERVICE_UUID);
if (pSvc)
{ /** make sure it's not null */
_characteristic = pSvc->getCharacteristic(CHARACTERISTIC_UUID);
if (_characteristic)
{ /** make sure it's not null */
// if (_characteristic->canRead())
// {
// Serial.print(_characteristic->getUUID().toString().c_str());
// Serial.print(" Value: ");
// Serial.println(_characteristic->readValue().c_str());
// }
/** registerForNotify() has been deprecated and replaced with subscribe() / unsubscribe().
* Subscribe parameter defaults are: notifications=true, notifyCallback=nullptr, response=false.
* Unsubscribe parameter defaults are: response=false.
*/
if (_characteristic->canNotify())
{
Serial.println("CAN NOTIFY");
if (!_characteristic->subscribe(true, std::bind(&BLEMIDI_Client_ESP32::notifyCB, this, _1, _2, _3, _4)))
{
Serial.println("error");
/** Disconnect if subscribe failed */
_client->disconnect();
return false;
}
}
// else if (_characteristic->canIndicate())
// {
// /** Send false as first argument to subscribe to indications instead of notifications */
// //if(!pChr->registerForNotify(notifyCB, false)) {
// if (!_characteristic->subscribe(false, std::bind(&BLEMIDI_Client_ESP32::notifyCB, this, _1, _2, _3, _4)))
// {
// /** Disconnect if subscribe failed */
// _client->disconnect();
// return false;
// }
// }
}
}
else
{
Serial.println("MIDI service not found.");
return false;
}
}
return true;
};
bool BLEMIDI_Client_ESP32::begin(const char *deviceName, BLEMIDI_Transport<class BLEMIDI_Client_ESP32> *bleMidiTransport)
{
using namespace std::placeholders;
_bleMidiTransport = bleMidiTransport;
Serial.println("CreateBLE");
std::string stringDeviceName(deviceName);
NimBLEDevice::init(stringDeviceName);
@ -207,121 +414,22 @@ bool BLEMIDI_Client_ESP32::begin(const char *deviceName, BLEMIDI_Transport<class
/** Optional: set any devices you don't want to get advertisments from */
// NimBLEDevice::addIgnored(NimBLEAddress ("aa:bb:cc:dd:ee:ff"));
// Retrieve a Scanner and set the callback we want to use to be informed when we
// have detected a new device. Specify that we want active scanning and start the
// scan to run for 5 seconds.
scan();
vTaskDelay(1000);
NimBLEScan *pBLEScan = BLEDevice::getScan();
pBLEScan->setAdvertisedDeviceCallbacks(new AdvertisedDeviceCallbacks());
pBLEScan->setInterval(150);
pBLEScan->setWindow(50);
pBLEScan->setActiveScan(true);
//doScan = true;
Serial.println("Scan");
pBLEScan->start(10, scanEndedCB);
Serial.println("Scan2");
//connect();
while (!doConnect)
{
// while (!doConnect)
// {
if (!pBLEScan->isScanning())
{
Serial.println("RESCAN");
pBLEScan->start(10, scanEndedCB);
}
vTaskDelay(100);
}
Serial.println("LOOP OUT");
_client = BLEDevice::createClient();
_client->setClientCallbacks(new MyClientCallbacks(this), false);
/** Set initial connection parameters: These settings are 15ms interval, 0 latency, 120ms timout.
* These settings are safe for 3 clients to connect reliably, can go faster if you have less
* connections. Timeout should be a multiple of the interval, minimum is 100ms.
* Min interval: 12 * 1.25ms = 15, Max interval: 12 * 1.25ms = 15, 0 latency, 51 * 10ms = 510ms timeout
*/
_client->setConnectionParams(12, 12, 0, 51);
/** Set how long we are willing to wait for the connection to complete (seconds), default is 30. */
_client->setConnectTimeout(5);
Serial.println("#Connection");
if (!_client->connect(advDevice))
{
/** Created a client but failed to connect, don't need to keep it as it has no data */
NimBLEDevice::deleteClient(_client);
Serial.println("Failed to connect, deleted client");
return false;
}
vTaskDelay(100);
if (!_client->isConnected())
{
if (!_client->connect(advDevice))
{
Serial.println("Failed to connect");
return false;
}
}
else
{
Serial.print("Connected to: ");
Serial.println(_client->getPeerAddress().toString().c_str());
Serial.print("RSSI: ");
Serial.println(_client->getRssi());
}
/** Now we can read/write/subscribe the charateristics of the services we are interested in */
NimBLERemoteService *pSvc = nullptr;
NimBLERemoteCharacteristic *pChr = nullptr;
//NimBLERemoteDescriptor *pDsc = nullptr;
pSvc = _client->getService(SERVICE_UUID);
if (pSvc)
{ /** make sure it's not null */
pChr = pSvc->getCharacteristic(CHARACTERISTIC_UUID);
if (pChr)
{ /** make sure it's not null */
if (pChr->canRead())
{
Serial.print(pChr->getUUID().toString().c_str());
Serial.print(" Value: ");
Serial.println(pChr->readValue().c_str());
}
/** registerForNotify() has been deprecated and replaced with subscribe() / unsubscribe().
* Subscribe parameter defaults are: notifications=true, notifyCallback=nullptr, response=false.
* Unsubscribe parameter defaults are: response=false.
*/
if (pChr->canNotify())
{
Serial.println("CAN NOTIFY");
if (!pChr->subscribe(true, std::bind(&BLEMIDI_Client_ESP32::notifyCB, this, _1, _2, _3, _4)))
{
Serial.println("error");
/** Disconnect if subscribe failed */
_client->disconnect();
return false;
}
}
else if (pChr->canIndicate())
{
/** Send false as first argument to subscribe to indications instead of notifications */
//if(!pChr->registerForNotify(notifyCB, false)) {
if (!pChr->subscribe(false, std::bind(&BLEMIDI_Client_ESP32::notifyCB, this, _1, _2, _3, _4)))
{
/** Disconnect if subscribe failed */
_client->disconnect();
return false;
}
}
}
}
else
{
Serial.println("MIDI service not found.");
return false;
}
// if (!pBLEScan->isScanning())
// {
// Serial.println("RESCAN");
// pBLEScan->start(10, scanEndedCB);
// }
// vTaskDelay(100);
// }
// Serial.println("LOOP OUT");
return true;
}
@ -339,7 +447,7 @@ void scanEndedCB(NimBLEScanResults results)
else
{
scanDone = false;
NimBLEDevice::getScan()->start(3,scanEndedCB);
NimBLEDevice::getScan()->start(3, scanEndedCB);
}
}