Download Accessing RFCOMM Using RFCLI and TCL Application

Contents
Contents
1
Introduction .................................................................................................................................................... 4
2
RFCOMM Protocol Layer............................................................................................................................... 5
2.1 Local Server Channel and Mux ID........................................................................................................... 8
Flow Control ................................................................................................................................................. 12
3.1 Credit Based Flow Control..................................................................................................................... 12
3.2 Maximum Frame Size............................................................................................................................ 15
3.3 Flow Control Layer ................................................................................................................................ 16
4
RFCOMM Firmware Build ............................................................................................................................ 18
5
Accessing RFCOMM Functionality Using RFCLI and TCL ....................................................................... 19
5.1 RFCLI ................................................................................................................................................... 19
5.2 TCL
................................................................................................................................................... 19
5.3 Setting Up RFCOMM Link ..................................................................................................................... 19
5.4 Over Air Sniffer ...................................................................................................................................... 35
5.5 Serial Sniffer .......................................................................................................................................... 39
6
Example of Accessing RFCOMM Using RFCLI and TCL .......................................................................... 40
6.1 Details of the RFCLI Source Script Example ......................................................................................... 41
6.2 Local and Remote Device Source Script ............................................................................................... 41
6.3 Initialisation of RFCOMM Layer in the Local Device.............................................................................. 42
6.3.1 Connect to Casira ...................................................................................................................... 42
6.3.2 Initialise Port Entity Transmit and Receive Buffers..................................................................... 43
6.3.3 Put Messages in Transmit Buffer ............................................................................................... 43
6.3.4 Initialise System Variables ......................................................................................................... 44
6.3.5 Register with RFCOMM ............................................................................................................. 44
6.3.6 Initialise RFCOMM ..................................................................................................................... 44
6.3.7 Register with Device Manager ................................................................................................... 44
6.3.8 Request RFCOMM Start ............................................................................................................ 45
6.3.9 RFCOMM Parameter Negotiation .............................................................................................. 45
6.3.10 RFCOMM Establishment ........................................................................................................... 45
6.4 Initialisation of the RFCOMM Layer of the Remote Device.................................................................... 46
6.4.1 Connect to Casira ...................................................................................................................... 47
6.4.2 Initialise Port Entity Transmit and Receive Buffers..................................................................... 47
6.4.3 Initialise System Variables ......................................................................................................... 47
6.4.4 Register with RFCOMM ............................................................................................................. 47
6.4.5 Initialise RFCOMM ..................................................................................................................... 47
6.4.6 Register with Device Manager ................................................................................................... 47
6.4.7 Listen ......................................................................................................................................... 47
6.4.8 Output “Waiting For Connection” Message ................................................................................ 47
6.4.9 Connect as Slave ....................................................................................................................... 48
6.5 Main Loop and State Machine ............................................................................................................... 48
6.6 Main Loop Functions ............................................................................................................................. 52
6.6.1 Check Transmit Buffer for Packets to Transmit.......................................................................... 53
6.6.2 Check Receiver Buffer for Space ............................................................................................... 53
6.6.3 Check for Packet in Receiver Buffer .......................................................................................... 53
6.6.4 Flow Control Layer ..................................................................................................................... 53
6.6.5 Process Next Received Packet in Receiver Buffer..................................................................... 54
6.6.6 Steady State .............................................................................................................................. 54
6.7 Other Functions ..................................................................................................................................... 54
6.7.1 Start Request ............................................................................................................................. 55
6.7.2 Register RFCOMM..................................................................................................................... 55
6.7.3 Receive RFCOMM Data ............................................................................................................ 56
6.7.4 Transmit RFCOMM Data ........................................................................................................... 56
6.7.5 Read Bluetooth Address Message............................................................................................. 57
6.7.6 Read Local Name Message ....................................................................................................... 58
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This material is subject to CSR’s non-disclosure agreement.
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_äìÉ`çêÉ Accessing RFCOMM Using RFCLI and TCL
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