Invalid Simulink object name: rtwshared

I'm trying to build a model for deployment to an Android device using the Simulink Support Package for Android Devices. I built and deployed one of the referenced models successfully as a test, however when trying to build the top model I get the following error:

Invalid Simulink object name: rtwshared
Caused by:
No block diagram 'rtwshared' is loaded. 

My understanding is that rtwshared is generated as part of the build process and is stored in the _sharedutils folder. However, checking that folder shows that it does not exist, and I am unsure why it has not been created and what I can do to resolve this issue.

Many thanks for any help and further troubleshooting steps!

[Sashi Tiwari]

I am also getting the same error while building the model using MPLAB suuport package for simulink.

=== Build (Elapsed: 30 sec) ===

Microchip Model Check before compilation

No compiler found in C:\PROGRA~1\MICROC~1\xc16\v1.50\bin

Compiler found in: C:/PROGRA~2/MICROC~1/xc16/v1.35/bin

Warning:Parameter precision loss occurred for 'Gain' of 'test_2/Subsystem/Gain'. The parameter's value cannot be represented exactly using the run-time data type. A small quantization error has occurred. To disable this warning or error, in the Configuration Parameters > Diagnostics > Data Validity pane, set the 'Detect precision loss' option in the Parameters group to 'none'.

Warning:Parameter precision loss occurred for 'Gain' of 'test_2/Subsystem/Gain1'. The parameter's value cannot be represented exactly using the run-time data type. A small quantization error has occurred. To disable this warning or error, in the Configuration Parameters > Diagnostics > Data Validity pane, set the 'Detect precision loss' option in the Parameters group to 'none'.

### Generating code and artifacts to 'Model specific' folder structure

### Generating code into build folder: G:\SBT\SOC\LCO\test_2.X

Warning:Parameter precision loss occurred for 'Gain' of 'test_2/Subsystem/Gain'. The parameter's value cannot be represented exactly using the run-time data type. A small quantization error has occurred. To disable this warning or error, in the Configuration Parameters > Diagnostics > Data Validity pane, set the 'Detect precision loss' option in the Parameters group to 'none'.

Warning:Parameter precision loss occurred for 'Gain' of 'test_2/Subsystem/Gain1'. The parameter's value cannot be represented exactly using the run-time data type. A small quantization error has occurred. To disable this warning or error, in the Configuration Parameters > Diagnostics > Data Validity pane, set the 'Detect precision loss' option in the Parameters group to 'none'.

### Invoking Target Language Compiler on test_2.rtw

### Using System Target File: C:\Users\LIPO\AppData\Roaming\MathWorks\MATLAB Add-Ons\Toolboxes\MPLAB Device Blocks for Simulink\blocks\MCHP_dsPIC_stf.tlc

### Loading TLC function libraries

### Generating TLC interface API for custom data

### Initial pass through model to cache user defined code

### Caching model source code

### Writing main

### Writing MCHP_modelInclude.h

--- Multi Tasking implementation (Treat each discrete rate as separate task)---

.

### Writing header file test_2_types.h

.

### Writing source file test_2.c

### Writing header file test_2_private.h

### Writing header file test_2.h

### Writing source file G:\SBT\SOC\LCO\slprj\MCHP_dsPIC_stf\_sharedutils\look1_binlg.c

### Writing header file G:\SBT\SOC\LCO\slprj\MCHP_dsPIC_stf\_sharedutils\look1_binlg.h

.

### Writing header file rtwtypes.h

### Writing header file rt_nonfinite.h

### Writing source file rt_nonfinite.c

### Writing header file rtGetInf.h

### Writing source file rtGetInf.c

.

### Writing header file rtGetNaN.h

### Writing source file rtGetNaN.c

### Writing header file rtmodel.h

### Writing source file test_2_main.c

### TLC code generation complete.

### Generating TLC interface API.

.....### Creating HTML report file test_2_codegen_rpt.html

Problem while Creating MPLAB project. MPLAB Project skipped.

.

### Processing Template Makefile: C:\Users\LIPO\AppData\Roaming\MathWorks\MATLAB Add-Ons\Toolboxes\MPLAB Device Blocks for Simulink\mchp\MCHP_dsPIC.tmf

Warning:Found legacy make variables |>START_MDLREFINC_EXPAND_INCLUDES<|, |>END_MDLREFINC_EXPAND_INCLUDES<|, |>MODELREF_INC_PATH<| in the template makefile C:\Users\LIPO\AppData\Roaming\MathWorks\MATLAB Add-Ons\Toolboxes\MPLAB Device Blocks for Simulink\mchp\MCHP_dsPIC.tmf. The variables are no longer required. You can remove the variables.

Warning:Found legacy make variables |>S_FUNCTIONS<|, |>S_FUNCTIONS_OBJ<| in the template makefile C:\Users\LIPO\AppData\Roaming\MathWorks\MATLAB Add-Ons\Toolboxes\MPLAB Device Blocks for Simulink\mchp\MCHP_dsPIC.tmf. The variables are no longer required. You can remove the variables.

### Build procedure for model: 'test_2' aborted due to an error.

Cannot propose to program chip from Matlab: Either file test_2.hex does not exist or MPLAB X API is not available on this system.

* Visit the Microchip Blockset Forum for any questions, issues, share tricks.

* Visit the Microchip Wiki for further informations and examples.

-----------------------------------------------------------------------------------------

* MPLAB X project: test_2.X then select the project folder

-----------------------------------------------------------------------------------------

***** Error detected. Links above are provided for debug purpose only (.elf file might not be current).

Error:Invalid Simulink object name: rtwshared

Caused by:

No block diagram 'rtwshared' is loaded.

please help us out.

[Sashi Tiwari]

Hello Edward, Have you got the answer?

[Edward Powlesland]

Hello,

Sorry for the delay - I contacted MATLAB Support, and they said it is due to a current bug when building a top model containing model reference blocks. My issue was resolved by copying the referenced models into sub-system blocks.

Hopefully this resolves your problem also. I realise that this is only a workaround, apparently MathWorks are working on releasing a fix in a future update.