correct sequence of include and defines
Hello,
after downloading the actual freeRTOS 5.3 version and comparing the demo freeRTOS53FreeRTOSDemoARM7_LPC2106_GCC there might be an error in the include-sequence. In the file FreeRTOSConfig.h are typedefs used, which are defined in portmacro.h, but protmacro.h uses a define ‘configUSE_16_BIT_TICKS’, which is set later in the freeRTOSConfig.h. How can this correctly pre-processed?
correct sequence of include and defines
FreeRTOS.h should always be the first FreeRTOS related header file included. When this is done:
First projdefs.h is included. This just defined a few things like pdTRUE and pdFALSE, etc.
Next FreeRTOSConfig.h is included. This uses the as yet undefined typedef portTickType, but FreeRTOSConfig.h is just a header file so will replace macros with text that uses portTickType but does not yet have to compile. It will also define configUSE_16_BIT_TICKS.
Finally portable.h is included which itself included portmacro.h. portmacro.h defines portTickType depending on the already defined configUSE_16_BIT_TICKS. This happens before compilation starts so everything is now straight.
Does that answer your question?
Regards.
correct sequence of include and defines
Yes. Thank you very much for your very fast answer.
Best regards