User's Manual

Appendix B – SDK NCL-API and Port Server______________________ Boomer II User Manual & Integrator’s Guide
Copyright Wavenet Technology © November 2003 96 BM210012WT37
MSMQ
MSMQ IN N
MSMQ IN 1
La
y
er 1
(
Ph
y
sical
)
Layer 2 (Data)
)))Li k)
La
y
er 3
(
Network
)
Level 4 (Transport )
Layer 6 (Presentation)
Serial Port to modem
Message Router & NCL Interpreter
Serial Port Drivers
TX Queue
Layer 5 (Session)
Wavenet NCL API Model
Logical Architecture
The following table lists the required functionality for the API per
layer. The code forms a DLL, with only a subset of functions available
for third party developers.
LAYER NAME CONTENT FUNCTION
7. APPLICATION Application specific data.
Applications are to initialise a RX MSMQ (Microsoft
Message Queuing system) queue and open a session
with the VDD by passing the RX queue handler.
6. PRESENTATION LAYER Unused
5. SESSION LAYER Unused
4. TRANSPORT LAYER Unused
3. NETWORK LAYER Router
MSMQ is run as a device driver on the Pocket PC
and is run from power up (i.e. Non-suspend mode).
The VDD will post events (RCV messages etc) to all
application RX queues enabled for that event.
Responses to application requests will be posted to
the calling application RX queue.
The VDD process TX requests via a FIFO queue to
the NCL Interpreter. The Host base routing or Peer-
to-Peer routing SDU formatting is contained in the
NCL interpreter.
2. DATA LINK LAYER
NCL Interpreter &
Extender port – Serial
Driver.
Application NCL API function requests are processed
via a FIFO queue. RPM responses or received data is
tagged and encoded for the router as required Also
the UART DLL that handles the extender port UART
to modem communications resides in the link layer
modules..