Hi all,
Having a few probs with Queues at the moment, silly ones now doubt.

I'm running IAR version 4 with Sam7x256.
The problem i'm having is the compiler doesnt know what xQueueHandle is, theres two in the queue.c/.h.

one is "typedef xQUEUE * xQueueHandle;"
the other is "typedef void * xQueueHandle;"

and i get the following, plus others


Warning[w6]: Type conflict for external/entry "xQueueCreate", in module CanControl against external/entry in module queue; function return types are different; different basic types


Anyone got any ideas?


Many thanks

Barry

This is deliberate data hiding. The IAR compiler is just very pedantic. Turn the warning off.

Regards.

You can modify queue.c to eliminate the warning AND preserve the data hiding.

Change queue.c so that it #includes queue.h. Now all the queue functions use the same typedef that your client code does (xQueueHandle is void*).

Change the typedef in queue.c to something like:
typedef xQUEUE xRealQueueHandle;

Now change all of the functions in queue.c that take an xQueueHandle parameter or return an xQueueHandle and cast the void pointer to xRealQueueHandle.

-rp