#include <rtl.h>

#define os_mbx_declare( \ 
    name,               \ /* Name of the mailbox */
    cnt )               \ /* Number of message entries */
U32 name [4 + cnt]

The os_mbx_declare macro defines a mailbox object. The argument name is the name of the mailbox object. The argument cnt is the number of messages that can be entered into the mailbox object. A cnt value of 20 is sufficient in most cases.

The os_mbx_declare macro is part of RL-RTX. The definition is in rtl.h.

None.

os_mbx_check, os_mbx_init, os_mbx_send, os_mbx_wait

#include <rtl.h>

/* Declare a mailbox for 20 messages. */
os_mbx_declare (mailbox1, 20);

__task void task1 (void) {
   ..
  os_mbx_init (&mailbox1, sizeof(mailbox1));
   ..
}