hdl coder error when compiling stateflow

Question

Amish Rughoonundon 2020-3-29

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/513661-hdl-coder-error-when-compiling-stateflow

评论： Amish Rughoonundon 2020-4-2

I can't figure out this error hdl coder is giving me when compiling a stateflow chart with parallel charts

Enumerated name 'IN_NO_ACTIVE_CHILD' is present in types 'state_type_is_TIMEOUT_WATCHER' and 'state_type_is_COUNT_IS_VALID'. Use unique enum type names for HDL code generation.

I attached the chart as pictures

Thanks for any help

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Amish Rughoonundon 2020-3-29

It seems hdl coder adds this state IN_NO_ACTIVE_CHILD by itself for the case where the state machine moves to the OFF state as shown below from the vhdl generated.

--case IN_ON:

sf_internal_predicateoutput_0 := hdlcoder_to_stdlogic((( NOT onoff) OR hdlcoder_to_stdlogic(timeoutCycles_unsigned = to_unsigned(0, 32))) = '1');

IF sf_internal_predicateoutput_0 = '1' THEN

is_COUNT_IS_VALID_next <= IN_NO_ACTIVE_CHILD;

is_TIMEOUT_WATCHER_next <= IN_NO_ACTIVE_CHILD;

is_timer_chart1_next <= IN_OFF;

ELSE

I am totally confused by why hdl coder would complain something it did itself. To me it would have made sense to move them back to the state connected to the default transitions????

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Answer 1

Kiran Kintali 2020-3-31

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/513661-hdl-coder-error-when-compiling-stateflow#answer_423197

Can you attach a small version of the model to reproduce the error?

"Enumerated name 'IN_NO_ACTIVE_CHILD' is present in types 'state_type_is_TIMEOUT_WATCHER' and 'state_type_is_COUNT_IS_VALID'. Use unique enum type names for HDL code generation."

We can check if the recommendation is valid or further improvements possible in the workflow.

Thanks