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Extended interrupt and event controller (EXTI) RM0367

300/1043 RM0367 Rev 7

13.5.6 EXTI pending register (EXTI_PR)

Address offset: 0x14

Reset value: 0x0000 0000

Bits 31:23 Reserved, must be kept at reset value.

Bits 22:19 SWIx: Software interrupt on line x (x = 22 to 19)

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 in 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 this bit).

Bit 18 Reserved, must be kept at reset value.

Bits 17:0 SWIx: Software interrupt on line x (x = 17 to 0)

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 in 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 this bit).

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

Res. Res. Res. Res. Res. Res. Res. Res. Res. PIF22 PIF21 PIF20 PIF19 Res. PIF17 PIF16

rc_w1 rc_w1 rc_w1 rc_w1 rc_w1 rc_w1

1514131211109 8 765432 1 0

PIF15 PIF14 PIF13 PIF12 PIF11 PIF10 PIF9 PIF8 PIF7 PIF6 PIF5 PIF4 PIF3 PIF2 PIF1 PIF0

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 22:19 PIFx: Pending interrupt flag on line x (x = 22 to 19)

0: No trigger request occurred

1: The selected trigger request occurred

This bit is set when the selected edge event arrives on the interrupt line. This bit is cleared

by writing it to 1 or by changing the sensitivity of the edge detector.

Bit 18 Reserved, must be kept at reset value.

Bits 17:0 PIFx: Pending interrupt flag on line x (x = 17 to 0)

0: No trigger request occurred

1: The selected trigger request occurred

This bit is set when the selected edge event arrives on the interrupt line. This bit is cleared

by writing it to 1 or by changing the sensitivity of the edge detector.

ST STM32L0x3 User Manual

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