plz help me with this problem(build C2H project)....

[Altera_Forum]

Hi all, 

I'm new here. recently,i was trying to test the C2H Compiler. But after i build the target project, i met an error as follows:   <---------------------------------------------------------------->   --- Quote Start ---   Compiling hello_world.c... ../hello_world.c:20:3: warning: no newline at end of file <----------------------------------------------------------------> The Nios II C2H Compiler is generating accelerator_hello_world_0_sum_elements.v... /cygdrive/f/Quartus_11.0/nios2eds/components/altera_avalon_c_hardware_accelerator/c2h-generate/....................... Progress: Loading system from fileD:/altera-FPGA/nios2_board_example/nios_ch_test/nios2.sopc... Progress: (reading unnamed) Progress: (reading nios2) Progress: (adding clk [clock_source 11.0]) Progress: (parameterizing module clk) Progress: (adding cpu_0 [altera_nios2 11.0]) Progress: (parameterizing module cpu_0) Progress: (adding sdram_0 [altera_avalon_new_sdram_controller 11.0]) Progress: (parameterizing module sdram_0) Progress: (adding epcs_flash_controller_0 [altera_avalon_epcs_flash_controller 11.0]) Progress: (parameterizing module epcs_flash_controller_0) Progress: (adding jtag_uart_0 [altera_avalon_jtag_uart 11.0]) Progress: (parameterizing module jtag_uart_0) ......................... Info: Reading index F:/Quartus_11.0/quartus/sopc_builder/bin/root_components.ipx Info: F:/Quartus_11.0/quartus/sopc_builder/bin/root_components.ipx: Loading now from components.ipx Info: Reading index F:/Quartus_11.0/quartus/sopc_builder/bin/ip_component_categories.ipx Info: F:/Quartus_11.0/quartus/sopc_builder/bin/ip_component_categories.ipx described 0 plugins, 0 paths, in 0.00 seconds Info: F:/Quartus_11.0/quartus/sopc_builder/bin/ip_component_categories.ipx matched 1 files in 0.00 seconds Info: Reading index F:/Quartus_11.0/ip/altera/altera_components.ipx Info: F:/Quartus_11.0/ip/altera/altera_components.ipx described 441 plugins, 0 paths, in 0.25 seconds Progress: Loading component/sls_avalon_usb20hr_hw.tcl Info: no sopc package requested, assuming package require -exact sopc 9.0 Info: F:/Quartus_11.0/ip/**/* matched 358 files in 0.36 seconds ............. <-------------------------------------------------------> error: can't create file d:/altera-fpga/nios2_board_example/nios_ch_test/nios2.ptf error: system generation failed. make: *** [c2h_hdl-t] error 254 Build completed in 57.671 seconds   --- Quote End ---   <------------------------------------------------------------->  I don't know how to solve this problem, can u help me?  BTW: some info maybe u need <-------------------------------------------------------> 1. PC OS: XP 2. Quartus II 11.0 + Nios II IDE 11.0 3. Build software and generate SOPC Builder System 4. Use hardware accelerator in place of software implementation. Flush data cahe.... <-------------------------------------------------------->  # include <stdio.h> int sum_elements(int *list, int len) { /*the function which i want to convert from ANSI C to HDL*/ int i; int sum = 0; for(i = 0; i < len; i++) sum += *list++; return sum; } int main() { int ia = {1, 2, 3, 4, 5}; int sum = sum_elements(ia, 5); printf("%d", sum); }  <----------------------------------------------------------->  many many thx~~~~~

[Altera_Forum]

can anybody help me?

[Altera_Forum]

I'm suspecting a file/directory permission problem. The error is saying that it cannot write the system .ptf file to your file system (i.e. it dropped the accelerator into your design but can't save your system before generating it). 

 It might also be the hyphon (-) in your directory path causing problems. Try turning that into an underscore (_) instead and see if that fixes the problem.

[Altera_Forum]

--- Quote Start ---  I'm suspecting a file/directory permission problem. The error is saying that it cannot write the system .ptf file to your file system (i.e. it dropped the accelerator into your design but can't save your system before generating it).  It might also be the hyphon (-) in your directory path causing problems. Try turning that into an underscore (_) instead and see if that fixes the problem.  --- Quote End ---   <--------------------------------------------------------------------> thanks for your reply, i have changed my file/directory and there is no hyphon(-)in my directory path..but still failed. It was strange that i met a new error as follows:    --- Quote Start ---  Progress: Loading system from fileD:/c2h/nios.sopc... Exception in thread "main" java.lang.NullPointerException at com.altera.sopceditor.util.EditorUtils.setQuartusProjectInfo(EditorUtils.java:2089)  at com.altera.c2h.C2HGenerate.createEnsemble(C2HGenerate.java:138)  at com.altera.sopceditor.app.EnsembleApp.start(EnsembleApp.java:171)  at com.altera.c2h.C2HGenerate.main(C2HGenerate.java:79) make: *** [c2h_hdl-t] Error 1 Build completed in 22.344 seconds   --- Quote End ---   <-----------------------------------------------------------------------> Meanwhile, i noticed that there is a similar error in  "Nios II Embedded Design Suite Release Notes and Errata" like this:   --- Quote Start ---   Exception in thread "main" java.lang.OutOfMemoryError: Java  heap space  make: *** [c2h_hdl-t] Error 1    --- Quote End ---    i faint...it really drives me crazy.....what should i do?:(

[Altera_Forum]

Try accelerating a really simple function, sometimes the error codes out of C2H are not very helpful. The simpliest function you can accelerate would be something like: 

 int foo()  {  return 1; }