Allows manual modification of memory contents at a specific address. checkStack() checkStack
If necessary, isolate the task by typing ts "TaskName" to suspend it. Scenario B: Tracking Down a Crashed Task
: Summarizes stack usage for all tasks, highlighting tasks nearing their stack limit.
: Generic object show command. Can be passed a task ID to display target synchronization primitives. Task Control Commands vxworks command cheat sheet
| Command | Description | Example | |---|---|---| | ifShow ["interface"] | Displays network interface configuration. | -> ifShow "gem0" | | ping ["host"], [count], [len] | Sends ICMP echo requests. | -> ping "192.168.1.1", 10, 64 | | routeShow | Shows the current routing table. | -> routeShow | | hostAdd ["hostname"], ["ip"] | Adds a static host-to-IP mapping. | -> hostAdd "server1", "10.0.0.10" | | ifconfig | Configures network interfaces. | -> ifconfig gem0 inet 192.168.1.100 |
: Sends ICMP echo requests to verify network connectivity with a remote host.
When a system crashes or behaves unpredictably, use these low-level commands to inspect hardware registers and memory addresses. Memory Manipulation Allows manual modification of memory contents at a
Tasks are the fundamental units of execution in VxWorks. Monitoring task states is critical for identifying deadlocks or CPU starvation. Task Monitoring
| Command | C Interpreter Equivalent | Description & Use Case | | --- | --- | --- | | lkup ["string"] | symFindByName( ) | . Searches the system symbol table for functions or variables. lkup "myFunc" finds all symbols with that string. | | lkAddr <address> | - | Display the symbol table entry near a given memory address . | | l <address>, [n] | - | Disassemble code . Shows n assembly instructions starting at a memory address (default 10). | | d <address>, [number], [width] | - | Display memory . Dumps memory contents from a given address. width can be 1, 2, 4, or 8 bytes. | | m <address>, [width] | - | Modify memory . Changes the value at a specific memory address. | | memShow [1] | memShow( ) | Show memory stats . Displays the system's free and allocated memory pool. Adding 1 provides a more detailed report. | | printErrno <value> | - | Decode error numbers . Translates a numeric error code into a human-readable VxWorks error message. In C mode, errno is equally essential. |
Common cheat sheets typically categorize commands into the following functional groups: 1. Task & Execution Management : Generic object show command
Dynamically attaches a network interface driver to the IP stack. routeShow() routeShow Displays the current IP routing table. ping("IP", count) ping
: Traces the call stack (Task Trace) of a specified task, displaying the sequence of function calls leading to its current state.