How to get TI F28335 working in Simulinks 'external mode'?

Hello,

I am trying to run a TI F28335 using EXTERNAL MODE in Simulink in order to log signals in real time. Deploying to hardware & running in normal mode works fine except for some warnings, but running in external mode fails during code generation and outputs the following error message:

### Unsupported CCS Version. Skipping CCS Project creation
C:/PROGRA~3/MATLAB/SUPPOR~1/R2017b/3P778C~1.INS/TIC200~1.INS/TI-CGT~1.LTS/bin/cl2000 --compile_only --large_memory_model --silicon_version=28 --define="LARGE_MODEL" -i"/~SupportFiles/DSP280x_headers" -i"/~SupportFiles/DSP280x_headers/include" -i"C:/PROGRA~3/MATLAB/SUPPOR~1/R2017b/3P778C~1.INS/TIC200~1.INS/TI-CGT~1.LTS/include" --define="EXTMODE_DISABLEPRINTF"  -v28 --float_support=fpu32 -ml -DMODEL=V16_R12_20171005_experimental -DNUMST=1 -DNCSTATES=0 -DHAVESTDIO -DON_TARGET_WAIT_FOR_START=0 -DTERMFCN=1 -DONESTEPFCN=1 -DMAT_FILE=0 -DMULTI_INSTANCE_CODE=0 -DEXT_MODE=1 -DINTEGER_CODE=0 -DMT=0 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DTID01EQ=0 -DDAEMON_MODE=1 -DMW_PIL_SCIFIFOLEN=16 -DSTACK_SIZE=512 -D__MW_TARGET_USE_HARDWARE_RESOURCES_H__ -DRT -DTERMFCN=1 -DONESTEPFCN=1 -DMAT_FILE=0 -DMULTI_INSTANCE_CODE=0 -DEXT_MODE=1 -DINTEGER_CODE=0 -DMT=0 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DTID01EQ=0 -DON_TARGET_WAIT_FOR_START=0 -DDAEMON_MODE=1 -DMW_PIL_SCIFIFOLEN=16 -DSTACK_SIZE=512 -DRT -DMODEL=V16_R12_20171005_experimental -DNUMST=1 -DNCSTATES=0 -DHAVESTDIO -IC:/V16_R2017b -IC:/V16_R2017b/V16_R12_20171005_experimental_ert_rtw -IC:/PROGRA~1/MATLAB/R2017b/extern/include -IC:/PROGRA~1/MATLAB/R2017b/simulink/include -IC:/PROGRA~1/MATLAB/R2017b/rtw/c/src -IC:/PROGRA~1/MATLAB/R2017b/rtw/c/src/ext_mode/common -IC:/PROGRA~1/MATLAB/R2017b/rtw/c/ert -IC:/PROGRA~1/MATLAB/R2017b/toolbox/coder/rtiostream/src/utils -IC:/ProgramData/MATLAB/SupportPackages/R2017b/toolbox/target/supportpackages/tic2000/inc -IC:/PROGRA~1/MATLAB/R2017b/toolbox/shared/can/src/scanutil -IC:/ProgramData/MATLAB/SupportPackages/R2017b/toolbox/target/supportpackages/tic2000/src -IC:/PROGRA~1/MATLAB/R2017b/toolbox/rtw/targets/common/can/blocks/tlc_c -IC:/ProgramData/MATLAB/SupportPackages/R2017b/toolbox/target/shared/externalmode_daemon/include --output_file=MW_c28xx_board.obj MW_c28xx_board.c

[...]

<Linking>
"C:/ProgramData/MATLAB/SupportPackages/R2017b/toolbox/target/supportpackages/tic2000/src/c28335.cmd", line 65: error: 
   program will not fit into available memory.  placement with
   alignment/blocking fails for section ".text" size 0x4b68 page 0.  Available
   memory ranges:
   RAML4L7      size: 0x4000       unused: 0x3c50       max hole: 0x3c50    
error: errors encountered during linking;
   "../V16_R12_20171005_experimental.out" not built

>> Compilation failure
gmake: *** [../V16_R12_20171005_experimental.out] Error 1
The make command returned an error of 2
Der Befehl "An_error_occurred_during_the_call_to_make" ist entweder falsch geschrieben oder
konnte nicht gefunden werden.
### Build procedure for model: 'V16_R12_20171005_experimental' aborted due to an error.
Error(s) encountered while building "V16_R12_20171005_experimental":
### Failed to generate all binary outputs.

What am I doing wrong? CodeComposerStudio version is v6.1.1.00022 & Matlab version is 2017b. Thank you for your answers!

Answer 1

[Suze Zhang]

Hi Martin,

Noticing from this line of the error message you posted:

 Available
 memory ranges:
 RAML4L7      size: 0x4000       unused: 0x3c50       max hole: 0x3c50

It seems that your model size is too large to fit to the F28335's RAM.

Instead, in the Configuration Parameters > Coder Target, check the option "Boot From Flash", which will use its flash memory instead of the RAM.

[Martin Grüterich]

Thank you, this seems to be one of the problems :)