C++TESK Testing ToolKit

FAQ » History » Revision 6

Revision 5 (Alexander Kamkin, 03/07/2013 09:42 AM) → Revision 6/7 (Alexander Kamkin, 03/14/2013 10:35 AM)

h1. Frequently Asked Questions 

 * *Where is it possible to get C++TESK Testing ToolKit?* 
 The toolkit is located at the following link: http://forge.ispras.ru/projects/cpptesk-toolkit/files. 

 * *What are the steps to have the toolkit correctly installed?* 
 1. Download and unpack the archive with C++TESK Testing ToolKit (the lastest version) into a convenient folder; 
 2. Run install.sh from the folder with C++TESK Testing ToolKit; 
 3. Wait until "Successfully installed" appears. 
 The toolkit is installed into $(CPPTESK_HOME) folder. If this environment variable is missing, it will be assigned to $(ISPRAS_HOME)/tools/cpptesk-toolkit. If the varible $(ISPRAS_HOME) is missing, this varible first will be assigned to $HOME. 

 * *What other programs should be installed for verification of hardware designs?* 
 There are Icarus Verilog and VeriTool being able to be installed by means of $(CPPTESK_HOME)/bin/install-veritool.sh. 
 Icarus Verilog is installed into $(ICARUS_HOME), and VeriTool is installed into $(VERITOOL_HOME). If the variables are missing, they will be created like $(CPPTESK_HOME). 

 * *Is it possible to reduce size of the signal dump file (VCD)?* 
 E.g. in Icarus Verilog it is possible to choose different dump file format LXT2. The running command would be as follows: $(ICARUS_HOME)/bin/vvp -M. -mdb $(DB_VVP) -lxt2 -M. +scen=$@ +argv="$(TEST_ARGV)". To use GTKWave for viewing the file is possible if testbench.vcd is renamed to testbench.lxt. 

 * *What does the following message mean* 
 <pre> 
  tests/src/scenarios/fifo_scen.cpp: In member function ''bool cpptesk::examples::fifo::FIFOScenario::scen_nop(cpptesk::ts::IntAbcCtx&)'': 
  tests/src/scenarios/fifo_scen.cpp:62: error: jump to case label 
  tests/src/scenarios/fifo_scen.cpp:55: error:     crosses initialization of ''int i'' 
 </pre> 
  *during compiling of the following code?* 
 <pre><class="cpp"> <pre> 
  50:bool FIFOScenario::scen_nop(Ctx& ctx) 
  51:{ 
  52:      IBEGIN 
  53:      IACTION 
  54:      { 
  55:          int i = 0; 
  56:          // Refresh functional coverage 
  57:          dut.refresh_coverage(); 
  58:          // Give control to the simulator for one cycle 
  59:          dut.cycle(); 
  60: 
  61:          // Take results of reference model working and check them 
  62:          YIELD(dut.verdict()); 
  63:      } 
  64:      IEND 
  65:} 
 </class></pre> </pre> 
 There is an agreement not to declare local variables inside of IACTION first block. If a nested into IACTION block is used, the problem will disappear. Also it is possible to declare variables before IBEGIN. 

 * *How to call a serializer?* 
 It can be called by means of one of the following macro: 
 START_STIMULUS(SEQUENTIAL|PARALLEL) 
 RECV_STIMULUS(SEQUENTIAL|PARALLEL, Interface iface, Message msg) 

 * *What is the difference between START_STIMULUS and RECV_STIMULUS?* 
 START_STIMULUS starts serializer with default parameters (interface and message are the same as those given to the stimuli process). RECV_STIMULUS allows modifing both message and name of the interface used. The macro is also useful if there is a stimulus with more than one serializer call inside.