ST STM32F40 Series User Manual

RM0090 Interrupts and events
Doc ID 018909 Rev 4 262/1422
10.3.6 Pending register (EXTI_PR)
Address offset: 0x14
Reset value: undefined
10.3.7 EXTI register map
Tabl e 4 7 gives the EXTI register map and the reset values.
1514131211109 87654321 0
SWIER
15
SWIER
14
SWIER
13
SWIER
12
SWIER
11
SWIER
10
SWIER
9
SWIER
8
SWIER
7
SWIER
6
SWIER
5
SWIER
4
SWIER
3
SWIER
2
SWIER
1
SWIER
0
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:23 Reserved, must be kept at reset value.
Bits 22:0 SWIERx: Software Interrupt on line x
Writing a 1 to this bit when it is at 0 sets the corresponding pending bit in EXTI_PR. If the
interrupt is enabled on this line on the EXTI_IMR and EXTI_EMR, an interrupt request is
generated.
This bit is cleared by clearing the corresponding bit in EXTI_PR (by writing a 1 to the bit).
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Reserved
PR22 PR21 PR20 PR19 PR18 PR17 PR16
rc_w1 rc_w1 rc_w1 rc_w1 rc_w1 rc_w1 rc_w1
1514131211109 87654321 0
PR15 PR14 PR13 PR12 PR11 PR10 PR9 PR8 PR7 PR6 PR5 PR4 PR3 PR2 PR1 PR0
rc_w1 rc_w1 rc_w1 rc_w1 rc_w1 rc_w1 rc_w1 rc_w1 rc_w1 rc_w1 rc_w1 rc_w1 rc_w1 rc_w1 rc_w1 rc_w1
Bits 31:23 Reserved, must be kept at reset value.
Bits 22:0 PRx: Pending bit
0: No trigger request occurred
1: selected trigger request occurred
This bit is set when the selected edge event arrives on the external interrupt line. This bit is
cleared by writing a 1 to the bit or by changing the sensitivity of the edge detector.
Table 47. External interrupt/event controller register map and reset values
Offset Register
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1 0
0x00
EXTI_IMR
Reserved
MR[22:0]
Reset value 00000000000000000000000
0x04
EXTI_EMR
Reserved
MR[22:0]
Reset value 00000000000000000000000
0x08
EXTI_RTSR
Reserved
TR[22:0]
Reset value 00000000000000000000000

ST STM32F40 Series Specifications

General

Brand	ST
Model	STM32F40 Series
Category	Microcontrollers
Language	English