emWin Multitasking support

[lpcware]

Content originally posted in LPCWare by Herrbert on Mon Apr 20 23:58:49 MST 2015
Hi,

we are planning to use emWin in conjunction with FreeRTOS.

The documentation says if one wants to do real multi-tasking (calling emWin functions from more than one thread) one needs to define:
#define GUI_OS 1 // Enable multitasking support
#define GUI_MAXTASK 5 // Max. number of tasks that may call emWin

Since the NXP emWin is delivered as a lib I am not sure how these values were defined during compilation.

So my question:
- Is GUI_OS set to 1?
- Which value is GUI_MAXTASK set to?

Thank you!
Simon

[lpcware]

Content originally posted in LPCWare by mc on Wed May 06 07:03:00 MST 2015
Hi giusloq,
Thanks for pointing out. Yes, emWin library is compiled with GUI_OS =1 and GUI_MAXTASK =4(default).
Information added at
http://www.lpcware.com/content/project/emwin-graphics-library

[lpcware]

Content originally posted in LPCWare by giusloq on Wed May 06 00:30:00 MST 2015

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Quote:
Having the define in a .h file is a hint but it is no definitiv answer that the library was compiled with the same settings.

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This can't be correct. It's impossible that NXP delivers emWin package with include files that don't match the library files.

I found on emWin manual that GUI_OS and GUI_MAXTASK macros have a default value: 0 and 4 respectively. If GUI_OS is defined as 1 and GUI_MAXTASK isn't defined, I think it takes the default value of 4.

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Quote:
From my point of view: emWin is a marketing joke of NXP - without proper documentation it can't be used for serious, risk controlled development.

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I agree with you. Anyway, for serious development, I think it's better to purchase a commercial license from Segger directly. In that case, you will receive the full source code of libraries.

[lpcware]

Content originally posted in LPCWare by Herrbert on Tue May 05 23:53:43 MST 2015

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Quote: giusloq
It's an old post and it's strange there isn't an answer yet.

I found GUI_OS definition in GUIConf.h delivered with emWin distribution by NXP. It is defined as 1, so multitasking is enabled.

However I can't find GUI_MAXTASK.

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yep it is an old post nonetheless it is still important. I still do not know if I can use the library or not.

Having the define in a .h file is a hint but it is no definitiv answer that the library was compiled with the same settings.

From my point of view: emWin is a marketing joke of NXP - without proper documentation it can't be used for serious, risk controlled development.

[lpcware]

Content originally posted in LPCWare by giusloq on Tue May 05 07:56:50 MST 2015
It's an old post and it's strange there isn't an answer yet.

I found GUI_OS definition in GUIConf.h delivered with emWin distribution by NXP. It is defined as 1, so multitasking is enabled.

However I can't find GUI_MAXTASK.