Code Generation: Static local variables

2011 11 21
2 个回答
回答已采纳
更新时间：2024 4 26
8 次查看（30 天）

1 个投票

I would like the "Block signals" and "Block states" in the generated c-code to be of the type "static".
Example:
static BlockIO_model B;
How do I get there? thx

请先登录，再回答此问题。

 采纳的回答

Kaustubha Govind
Kaustubha Govind 2011-11-22

1 个投票

I don't think there is currently a simple solution for this (I would recommend putting in an enhancement request with MathWorks Tech Support if this is important for your use-case).
However, this is certainly possible with use of Custom Storage Classes. You can create your own storage class to declare data as "static" in the generated code. This storage class can then be applied to data in your model by the use of Simulink.Signal (or mpt.Signal) and Simulink.Parameter (or mpt.Parameter) objects that use this as their storage class. There are some usage examples in the documentation section Types, Operators, and Expressions.

6 个评论
显示 4更早的评论 隐藏 4更早的评论

Steg
Steg 2011-11-22
thanks for your answert.
I'm already working with custom storage classes. It works well for signals which are linked to these storage classes.
My current problem is, that all other variables (like block outputs or states), which are generated automatically and are not related to a storage class, are of a global typ. In general, I want all variables in the code to be of a "static local" type.
Any idea how to make these "intermediate" variables of static type?
Kaustubha Govind
Kaustubha Govind 2011-11-23
Steg: In general, you can assign custom storage classes to all signals by creating a signal object or assigning it a name (right click on signal and select "Signal Properties ..."). Regarding states - I think this is currently possible only for blocks that have the "State Attributes" tab in the dialog window like the Delay and Unit Delay block. You can select a storage class in this tab.
Fang Li
Fang Li 2016-12-22
编辑：Fang Li 2016-12-22
I come across this problem too. The Answer here does no help.
Jean
Jean 2017-1-9
Hello Fang, do you manage to fix this issue?
I am trying to generate it for unit delay block..it is generated as global static.. but i am unable to generate it as local static..
sai ganesh
sai ganesh 2024-4-26
Any solution for this scenario? Even in MATLAB 2022b we are unable to generate the Block states as local static variables.

请先登录，再进行评论。

更多回答（1 个）

Fan BU
Fan BU 2017-5-26

0 个投票

Please try using the block delay, the delayed signal will be one from last cycle, this corresponds to static in C code, see the picture, the signal rpmDir in generated C code will be static.
Maybe custom storage class is better solution, I never used this.

类别

在 帮助中心 和 File Exchange 中查找有关 Signal Generation 的更多信息

产品

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by