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Tornado 2.0 User’s Guide Resolving Name Conflicts between Host and Target If you invoke a name that stands for a host shell command, the shell always invokes that command, even if there is also a target routine with the same name. Thus, for example, i( )always runs on the host, regardless of whether you have the VxWorks routine of the same name linked into your target. However, you may occasionally need to call a target routine that has the same name as a host shell command. The shell supports a convention allowing you to make this choice: use the single-character prefix @ to identify the target version of any routine. For example, to run a target routine named i( ), invoke it with the name @i( ). 5.2.4 Running Target Routines from the Shell All target routines are available from WindSh. This includes both VxWorks routines and your application routines. Thus the shell provides a powerful tool for testing and debugging your applications using all the host resources while having minimal impact on how the target performs and how the application behaves. Invocations of VxWorks Subroutines -> taskSpawn ("tmyTask", 10, 0, 1000, myTask, fd1, 300) value = … -> fd = open ("file", 0, 0) new symbol "fd" added to symbol table fd = (…address of fd…): value = … Invocations of Application Subroutines -> testFunc (123) value = … -> myValue = myFunc (1, &val, testFunc (123)) myValue = (…address of myValue…): value = … -> myDouble = (double ()) myFuncWhichReturnsADouble (x) myDouble = (…address of myDouble…): value = … For situations where the result of a routine is something other than a 4-byte integer, see Function Calls, p.179. 168
5 Shell 5.2.5 Rebooting from the Shell In an interactive real-time development session, it is sometimes convenient to restart everything to make sure the target is in a known state. WindSh provides the reboot( ) command or CTRL+SHIFT+X to make this easy. When you execute reboot( )or type CTRL+SHIFT+X, the following reboot sequence occurs: 1. The shell displays a message to confirm rebooting has begun: 5 -> reboot Rebooting... 2. The target reboots. 3. The original target server on the host detects the target reboot and restarts itself, with the same configuration as previously. The target-server configuration options -Bt (timeout) and -Br (retries) govern how long the new server waits for the target to reboot, and how many times the new server attempts to reconnect; see the tgtsvr reference entry in D. Tornado Tools Reference, or in the HTML help. 4. The shell detects the target-server restart and begins an automatic-restart sequence (initiated any time it loses contact with the target server for any reason), indicated with the following messages: Target connection has been lost. Restarting shell... Waiting to attach to target server...... 5. When WindSh establishes contact with the new target server, it displays the Tornado shell logo and awaits your input. NOTE: If the target server timeout (-Bt) and retry count (-Br) are too low for your target and your connection method, the new target server may abandon execution before the target finishes rebooting. The default timeout is one second, and the default retry count is three; thus, by default the target server waits three seconds for the target to reboot. If the shell does not restart in a reasonably short time after a reboot( ), try starting a new target server manually. 169
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7 Debugger Tcl Menu The Tcl menu pr
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8 Customization 8.1 Introduction To
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C Tornado Tools Reference EXAMPLE R
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C Tornado Tools Reference DESCRIPTI
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D Utilities Reference aoutToBin - e
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E X Resources E.1 Predefined X Reso
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Index Symbols ? (C/Tcl interpreter
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Index assembler options, specifying
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Index download options 260 download
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Index creating 100 linking 103 open
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Index info command (CrossWind) 258
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Index O Object Modules folder 102 O
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Index redirecting I/O 186-190 shCon
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Index unreserved 82 virtual console
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Index creating 77 virtual I/O 12 VM
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