Simulink Desktop Real-time external mode doesn't support real-time UDP communication block

Hi,

I try to use real-time UDP communicaition block in Simulink Desktop Real-time. My program runs well in Normal mode. But when I try to run it in External mode, it reports that

C:/MATALB~1/toolbox/sldrt/clang/win64/clang -emit-llvm -c -m64 -O4 -DINT64_T="long long" -DUINT64_T="unsigned long long" -fno-ms-compatibility -U_MSC_VER -U__STDC_HOSTED__ -Wno-switch-enum -Wno-empty-body -IC:/MATALB~1/toolbox/sldrt/lib/include -I. -I.. -IC:/MATALB~1/simulink/include -IC:/MATALB~1/extern/include -IC:/MATALB~1/rtw/c/src -IC:/MATALB~1/rtw/c/src/ext_mode/common -IC:/MATALB~1/toolbox/shared/can/src/scanutil -IC:/MATALB~1/toolbox/sldrt/src -IC:/Users/qzlab -IC:/Users/qzlab/Deskrealtime_sldrt_win64 -IC:/MATALB~1/extern/include -IC:/MATALB~1/simulink/include -IC:/MATALB~1/rtw/c/src -IC:/MATALB~1/rtw/c/src/ext_mode/common -IC:/MATALB~1/toolbox/coder/rtiostream/src -DTGTCONN -DEXT_MODE -DON_TARGET_WAIT_FOR_START=1 -DEXT_MODE -DUSE_RTMODEL -DMODEL=Deskrealtime -DRT -DNUMST=1 -DTID01EQ=0 -DNCSTATES=0 -DMT=0 -o "slrtIPConfig.obj" "C:/MATALB~1/toolbox/slrt/blocks/UDP/slrtIPConfig.c" C:/MATALB~1/toolbox/slrt/blocks/UDP/slrtIPConfig.c:13:10: fatal error: 'socketfuncs.h' file not found #include "socketfuncs.h" ^ 1 error generated. gmake: *** [slrtIPConfig.obj] Error 1

Can anyone give me some suggestions?

Thanks,

zezhou

[Thomas Marullo]

Did you ever figure out how to run UDP code in the Simulink Desktop Real-Time environment?

Answer 1

[Sai Sri Pathuri]

You may refer the following answer to resolve the error

https://www.mathworks.com/matlabcentral/answers/373551-how-to-resolve-the-udp-receive-build-error?s_tid=answers_rc1-2_p2_MLT

Hope this helps!

[Zezhou Zhang]

Thank you for suggestions, but it doesn't solve the problem.

I use Simulink Destop Real-time. So, in code generation, I choose sldrt.tlc (SIMULINK DESKTOP REAL-TIME).

When I try to use UDP block in Embedded Coder Toolbo or DSP Toolbox, the errors are the same:

C:\Users\qzlab\Deskrealtime1_sldrt_win64>set MATLAB=C:\Matalb2019B C:\Users\qzlab\Deskrealtime1_sldrt_win64>"C:\Matalb2019B\bin\win64\gmake" -f Deskrealtime1.mk EXTMODE_STATIC_ALLOC=0 EXTMODE_STATIC_ALLOC_SIZE=1000000 TMW_EXTMODE_TESTING=0 COMBINE_OUTPUT_UPDATE_FCNS=0 INCLUDE_MDL_TERMINATE_FCN=1 MULTI_INSTANCE_CODE=0 ISPROTECTINGMODEL=NOTPROTECTING OPTS="-DTGTCONN -DEXT_MODE -DON_TARGET_WAIT_FOR_START=0" ### Compiling Deskrealtime1.c C:/MATALB~1/toolbox/sldrt/clang/win64/clang -emit-llvm -c -m64 -O4 -DINT64_T="long long" -DUINT64_T="unsigned long long" -fno-ms-compatibility -U_MSC_VER -U__STDC_HOSTED__ -Wno-switch-enum -Wno-empty-body -IC:/MATALB~1/toolbox/sldrt/lib/include -I. -I.. -IC:/MATALB~1/simulink/include -IC:/MATALB~1/extern/include -IC:/MATALB~1/rtw/c/src -IC:/MATALB~1/rtw/c/src/ext_mode/common -IC:/MATALB~1/toolbox/shared/can/src/scanutil -IC:/MATALB~1/toolbox/sldrt/src -IC:/Users/qzlab -IC:/MATALB~1/toolbox/shared/spc/src_ml/extern/include -IC:/Users/qzlab/Deskrealtime1_sldrt_win64 -IC:/MATALB~1/extern/include -IC:/MATALB~1/simulink/include -IC:/MATALB~1/rtw/c/src -IC:/MATALB~1/rtw/c/src/ext_mode/common -IC:/MATALB~1/toolbox/coder/rtiostream/src -DTGTCONN -DEXT_MODE -DON_TARGET_WAIT_FOR_START=0 -DEXT_MODE -DUSE_RTMODEL -DMODEL=Deskrealtime1 -DRT -DNUMST=2 -DTID01EQ=0 -DNCSTATES=0 -DMT=0 -o "Deskrealtime1.obj" "Deskrealtime1.c" In file included from Deskrealtime1.c:21: In file included from ./Deskrealtime1.h:32: In file included from C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include\DAHostLib_Network.h:44: In file included from C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:12: C:/MATALB~1/toolbox/sldrt/lib/include\windows.h:16:2: error: Attempt to include "windows.h" #error Attempt to include "windows.h" ^ C:/MATALB~1/toolbox/sldrt/lib/include\windows.h:17:2: error: The model being compiled contains a block that can run on host only and cannot be compiled for External Mode. Please either switch to Normal Mode or remove the block. #error The model being compiled contains a block that can run on host only and cannot be compiled for External Mode. Please either switch to Normal Mode or remove the block. ^ In file included from Deskrealtime1.c:21: In file included from ./Deskrealtime1.h:32: In file included from C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include\DAHostLib_Network.h:44: C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:47:5: error: unknown type name 'HMODULE' HMODULE library; ^ C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:53:5: error: unknown type name 'FARPROC' FCNPTR libCreate; ^ C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:13:18: note: expanded from macro 'FCNPTR' # define FCNPTR FARPROC ^ C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:54:5: error: unknown type name 'FARPROC' FCNPTR libStart; ^ C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:13:18: note: expanded from macro 'FCNPTR' # define FCNPTR FARPROC ^ C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:55:5: error: unknown type name 'FARPROC' FCNPTR libReset; ^ C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:13:18: note: expanded from macro 'FCNPTR' # define FCNPTR FARPROC ^ C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:56:5: error: unknown type name 'FARPROC' FCNPTR libUpdate; ^ C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:13:18: note: expanded from macro 'FCNPTR' # define FCNPTR FARPROC ^ C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:57:5: error: unknown type name 'FARPROC' FCNPTR libOutputs; ^ C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:13:18: note: expanded from macro 'FCNPTR' # define FCNPTR FARPROC ^ C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:58:5: error: unknown type name 'FARPROC' FCNPTR libTerminate; ^ C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:13:18: note: expanded from macro 'FCNPTR' # define FCNPTR FARPROC ^ C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:59:5: error: unknown type name 'FARPROC' FCNPTR libDestroy; ^ C:/MATALB~1/toolbox/shared/spc/src_ml/extern/include/DAHostLib_rtw.h:13:18: note: expanded from macro 'FCNPTR' # define FCNPTR FARPROC ^ 10 errors generated. gmake: *** [Deskrealtime1.obj] Error 1 Error(s) encountered while building "Deskrealtime1"

It seems that in SIMULINK DESKTOP REAL-TIME external mode, some libs are lost.

Thanks,

Zezhou

[Stefanie Schwarz]

You cannot use driver blocks from libraries such as Embedded Coder or DSP Toolbox with Simulink Desktop Real-Time (SLDRT). These driver blocks are simply not compatible with SLDRT. You need to use dedicated blocks from the SLDRT library:

>> sldrtlib

If your UDP packets contain ASCII encoded data, you can use the Stream Input/Output blocks. Here is practical example on how to use the Stream Input/Output blocks:

How do I parse XML data sent via UDP in a Simulink Desktop Real-Time application? - MATLAB Answers - MATLAB Central (mathworks.com)