Workflow in the IDE

The IAR add-on of Testwell CTC++ offers a full integration with IAR Embedded Workbench, for all steps from building to report generation.


Use Tools > CTC++ Set/ Clean... to configure the coverage level, the usage of HOTA or BITCOV, and other ctc options.


Use Tools > CTC++ Instrumented Build to build instrumented binaries. They replace the uninstrumented version. The symbol file MON.sym is created in the project directory.

Note: Using Debug as build configuration is the most convenient way, especially when using Testwell CTC++ for the first time.
Note: If a build is performed automatically when running the debugger, this can overwrite the instrumented program. You can deactivate this automation in the IAR Workbench options.


With the instrumented binaries, execute the tests as usual with IAR Embedded Workbench - on the real target, or in a simulation.

For many targets, the standard implementation of the HOTA runtime library works, especially when the debugger is used for communication. If an adaption is necessary, see HOTA: Adapting the runtime for details.

Coverage Data and Reports

With the default setup for HOTA, only one step is necessary to build reports: Use Tools > CTC++ Report... to choose the report and to generate it.

If you are using BITCOV, the coverage data reside in an array in memory and have to be dumped first to a file:
  1. Use the memory screen of the IAR debugger to locate CTC_array.
  2. Save it to the project directory with file format "intel-extended" and filename memory.hex.

After that, you can continue with Tools > CTC++ Report... as described for HOTA.