- Add NimBLEL2CAPChannel::disconnect() and getConnHandle().
- Fix CoC TX mbuf ownership handling in writeFragment():
treat BLE_HS_ENOMEM / BLE_HS_EAGAIN as consumed buffer,
only free local tx mbuf on BLE_HS_EBUSY.
- Refresh L2CAP client/server examples for stress testing and
runtime stats.
- Pin example dependency mickeyl/esp-hpl to tag 1.1.0.
- Clean trailing whitespace in updated example sources.
Closes#391
L2CAP is the underlying technology powering GATT.
BLE 5 exposes L2CAP COC (Connection Oriented Channels)
allowing a streaming API that leads to much higher throughputs
than you can achieve with updating GATT characteristics.
The patch follows the established infrastructure very closely.
The main components are:
- `NimBLEL2CAPChannel`, encapsulating an L2CAP COC.
- `NimBLEL2CAPServer`, encapsulating the L2CAP service.
- `Examples/L2CAP`, containing a client and a server application.
Apart from these, only minor adjustments to the existing code was
necessary.
Dr. Michael Lauer