This DPA Request is executed as a part of the peripheral enumeration.
The purposes of the request are:
1. Specify how many user peripherals are implemented.
2. Set bits corresponding to the user peripherals at the UserPer array. Predefined macro FlagUserPer can be used.
3. If any embedded peripheral is handled by a custom DPA handler instead of the default handler (overriding embedded peripherals).
4. Specify HW profile ID and its version if one is implemented.
Example
case DpaEvent_DpaRequest:
if ( IsDpaEnumPeripheralsRequest() )
{
// One user peripheral defined
_DpaMessage.EnumPeripheralsAnswer.UserPerNr = 1;
FlagUserPer( _DpaMessage.EnumPeripheralsAnswer.UserPer, PNUM_USER );
// We override embedded EEEPROM peripheral
_DpaMessage.EnumPeripheralsAnswer.DefaultPer[PNUM_EEEPROM/8] |= 1 << (PNUM_EEEPROM % 8);
// HW profile ID and version
_DpaMessage.EnumPeripheralsAnswer.HWPID = 0x123F;
_DpaMessage.EnumPeripheralsAnswer.HWPIDver = 0xABCD;
return TRUE;
}