商業版要收費的FreeRTOS( FreeRTOS+ )，library 也要收費@@

看起來，只有除了FreeRTOS内核外，其他的都是收費的了

 他的商業License 部分宣告文，摘錄如下：

FreeRTOS+XXX  SL (C) 2013 HCC Embedded

The FreeRTOS+XXX  SL license terms are different to the FreeRTOS license terms.

FreeRTOS+XXX  SL uses a dual license model that allows the software to be used
under a standard GPL open source license, or a commercial license.  The standard
GPL license (unlike the modified GPL license under which FreeRTOS itself is
distributed) requires that all software statically linked with FreeRTOS+XXX  SL
is also distributed under the same GPL V2 license terms.  Details of both
license options follow:

- Open source licensing -
FreeRTOS+XXX SL is a free download and may be used, modified, evaluated and
distributed without charge provided the user adheres to version two of the GNU
General Public License (GPL) and does not remove the copyright notice or this
text.  The GPL V2 text is available on the gnu.org web site, and on the
following URL: http://www.FreeRTOS.org/gpl-2.0.txt.

- Commercial licensing -
Businesses and individuals that for commercial or other reasons cannot comply
with the terms of the GPL V2 license must obtain a commercial license before
incorporating FreeRTOS+XXX SL into proprietary software for distribution in any
form.  Commercial licenses can be purchased from http://shop.freertos.org/xxx_sl
and do not require any source files to be changed.

上文的 XXX，會是 FAT、TCP、UDP、IO... 等等，也就是 每一種應用，看來都要收費了。