STMicroelectronics STM32F405 Reference Manual page 1298

USB on-the-go full-speed (OTG_FS)
OTG_FS device all endpoints interrupt register (OTG_FS_DAINT)
Address offset: 0x818
Reset value: 0x0000 0000
When a significant event occurs on an endpoint, a OTG_FS_DAINT register interrupts the
application using the Device OUT endpoints interrupt bit or Device IN endpoints interrupt bit
of the OTG_FS_GINTSTS register (OEPINT or IEPINT in OTG_FS_GINTSTS,
respectively). There is one interrupt bit per endpoint, up to a maximum of 16 bits for OUT
endpoints and 16 bits for IN endpoints. For a bidirectional endpoint, the corresponding IN
and OUT interrupt bits are used. Bits in this register are set and cleared when the
application sets and clears bits in the corresponding Device Endpoint-x interrupt register
(OTG_FS_DIEPINTx/OTG_FS_DOEPINTx).
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
r r r r r r r
Bits 31:16 OEPINT: OUT endpoint interrupt bits
Bits 15:0 IEPINT: IN endpoint interrupt bits
OTG_FS all endpoints interrupt mask register (OTG_FS_DAINTMSK)
Address offset: 0x81C
Reset value: 0x0000 0000
The OTG_FS_DAINTMSK register works with the Device endpoint interrupt register to
interrupt the application when an event occurs on a device endpoint. However, the
OTG_FS_DAINT register bit corresponding to that interrupt is still set.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:16 OEPM: OUT EP interrupt mask bits
Bits 15:0 IEPM: IN EP interrupt mask bits
1298/1731
OEPINT
r r r r r r
One bit per OUT endpoint:
Bit 16 for OUT endpoint 0, bit 18 for OUT endpoint 3.
One bit per IN endpoint:
Bit 0 for IN endpoint 0, bit 3 for endpoint 3.
OEPM
One per OUT endpoint:
Bit 16 for OUT EP 0, bit 18 for OUT EP 3
0: Masked interrupt
1: Unmasked interrupt
One bit per IN endpoint:
Bit 0 for IN EP 0, bit 3 for IN EP 3
0: Masked interrupt
1: Unmasked interrupt
DocID018909 Rev 11
r r r r r r r
9 8 7 6 5
IEPINT
r r r r r r r
9 8 7 6 5
IEPM
RM0090
4 3 2 1 0
r r r r r
4 3 2 1 0