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Fix client connect return code handling, add disconnect timer.

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* Handle the return codes from ble_gap_connect to take proper actions for different codes.

* Improve client event handling to accomodate delayed PDU responses.

* Use connection ID as a replacement for the isConnected flag. Also check if a task is waiting for
  results instead of the waitingToConnect flag.

* Adds a disconnect timer so that calling disconnect will start a timer for the connection
  supervision timeout time + a small delay. When this expires it will reset the host if a disconnect event
  does not occur in this time. This is added as a workaround for the occasional situation
  when the controller does not send an event after the disconnect command.
This commit is contained in:
h2zero
2021-01-12 13:50:08 -07:00
parent 8fe2766e01
commit 28717c300a
3 changed files with 123 additions and 77 deletions
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src/NimBLEDevice.cpp
+8 -10
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@@ -144,8 +144,8 @@ void NimBLEDevice::stopAdvertising() {
#if defined(CONFIG_BT_NIMBLE_ROLE_CENTRAL)
/* STATIC */ NimBLEClient* NimBLEDevice::createClient(NimBLEAddress peerAddress) {
if(m_cList.size() >= NIMBLE_MAX_CONNECTIONS) {
NIMBLE_LOGW("Number of clients exceeds Max connections. Max=(%d)",
NIMBLE_MAX_CONNECTIONS);
NIMBLE_LOGW(LOG_TAG,"Number of clients exceeds Max connections. Cur=%d Max=%d",
m_cList.size(), NIMBLE_MAX_CONNECTIONS);
}
NimBLEClient* pClient = new NimBLEClient(peerAddress);
@@ -167,24 +167,22 @@ void NimBLEDevice::stopAdvertising() {
int rc =0;
if(pClient->m_isConnected) {
if(pClient->isConnected()) {
rc = pClient->disconnect();
if (rc != 0 && rc != BLE_HS_EALREADY && rc != BLE_HS_ENOTCONN) {
return false;
}
while(pClient->m_isConnected) {
vTaskDelay(10);
while(pClient->isConnected()) {
vTaskDelay(10 / portTICK_PERIOD_MS);
}
}
if(pClient->m_waitingToConnect) {
} else if(pClient->m_pTaskData != nullptr) {
rc = ble_gap_conn_cancel();
if (rc != 0 && rc != BLE_HS_EALREADY) {
return false;
}
while(pClient->m_waitingToConnect) {
vTaskDelay(10);
while(pClient->m_pTaskData != nullptr) {
vTaskDelay(10 / portTICK_PERIOD_MS);
}
}