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Handling Debug Events
#define USBD_DBG_GENERIC(msg, ep_addr, if_nbr)
#define USBD_DBG_GENERIC_ERR(msg, ep_addr, if_nbr, err)
#define USBD_DBG_GENERIC_ARG(msg, ep_addr, if_nbr, arg)
USBD_Dbg((msg),
(ep_addr),
(if_nbr),
USBD_ERR_NONE)
USBD_Dbg((msg),
(ep_addr),
(if_nbr),
(err))
USBD_DbgArg((msg),
(ep_addr),
13
(if_nbr),
(CPU_INT32U)(arg),
(USBD_ERR_NONE))
#define USBD_DBG_GENERIC_ARG_ERR(msg, ep_addr, if_nbr, arg, err) USBD_DbgArg((msg),
(ep_addr),
(if_nbr),
(CPU_INT32U)(arg),
(err))
Listing 13-3 Core Level Debug Macros
There are subtle yet important differences between each debug macro. The first debug
macro is the most simple, specifying just the debug message, endpoint address and
interface number as parameters. The second and third macros differ in the last parameter
where one specifies the error and the other specifies an argument of choice. The last macro
lets the caller specify all details including both error and argument.
Furthermore, core level debug macros can be further mapped to other macros to simplify
the repetition of endpoint address and interface number parameters. Listing 13-4 shows an
example of a bus specific debug macro and a standard debug macro found in
usbd_core.c .
235
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