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RM0008 Interrupts and events

Doc ID 13902 Rev 12 203/1096

10.3.5 Software interrupt event register (EXTI_SWIER)

Address offset: 0x10

Reset value: 0x0000 0000

10.3.6 Pending register (EXTI_PR)

Address offset: 0x14

Reset value: undefined

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

Reserved

SWIER

rw rw rw rw

1514131211109 8 7654321 0

SWIER

rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw

Bits 31:20 Reserved, must be kept at reset value (0).

Bits 19:0 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 of EXTI_PR (by writing a 1 into the bit).

Note: Bit 19 used in connectivity line devices and is reserved otherwise.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

Reserved

PR19 PR18 PR17 PR16

rc_w1 rc_w1 rc_w1 rc_w1

1514131211109 8 7654321 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 31:20 Reserved, must be kept at reset value (0).

Bits 19:0 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 into the bit or by changing the sensitivity of the edge detector.

Note: Bit 19 is used in connectivity line devices only and is reserved otherwise.

ST STM32F101xx User Manual

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