Rising Trigger Selection Register (Exti_Rtsr1); Falling Trigger Selection Register (Exti_Ftsr1) - STMicroelectronics RM0365 Reference Manual

Interrupts and events
13.3.3

Rising trigger selection register (EXTI_RTSR1)

Address offset: 0x08
Reset value: 0x0000 0000
31 30 29
Res. TR30 Res. Res.
rw
15 14 13
TR15 TR14 TR13 TR12
rw rw rw
Bits 29:23 Reserved, must be kept at reset value.
Bits 22:0 TRx: Rising trigger event configuration bit of line x (x = 22 to 0)
Note: The external wakeup lines are edge-triggered. No glitches must be generated on these
lines. If a rising edge on an external interrupt line occurs during a write operation in the
EXTI_RTSR register, the pending bit is not set.
Rising and falling edge triggers can be set for the same interrupt line. In this case, both
generate a trigger condition.
13.3.4

Falling trigger selection register (EXTI_FTSR1)

Address offset: 0x0C
Reset value: 0x0000 0000
31 30 29
Res. TR30 Res. Res.
rw
15 14 13
TR15 TR14 TR13 TR12
rw rw rw
Bits 29:23 Reserved, must be kept at reset value.
Bits 22:0 TRx: Falling trigger event configuration bit of line x (x = 22 to 0)
219/1080
28 27 26 25
Res. Res. Res.
12 11 10 9
TR11 TR10 TR9
rw rw rw rw
Bit 31 Reserved, must be kept at reset value.
Bit 30 TRx: Rising trigger event configuration bit of line x (x = 30)
0: Rising trigger disabled (for Event and Interrupt) for input line
1: Rising trigger enabled (for Event and Interrupt) for input line.
0: Rising trigger disabled (for Event and Interrupt) for input line
1: Rising trigger enabled (for Event and Interrupt) for input line.
28 27 26 25
Res. Res. Res.
12 11 10 9
TR11 TR10 TR9
rw rw rw rw
Bit 31 Reserved, must be kept at reset value.
Bit 30 TRx: Falling trigger event configuration bit of line x (x = 30)
0: Falling trigger disabled (for Event and Interrupt) for input line
1: Falling trigger enabled (for Event and Interrupt) for input line.
0: Falling trigger disabled (for Event and Interrupt) for input line
1: Falling trigger enabled (for Event and Interrupt) for input line.
24 23 22
Res. Res. TR22
rw
8 7 6
TR8 TR7 TR6
rw rw rw
24 23 22
Res. Res. TR22
rw
8 7 6
TR8 TR7 TR6
rw rw rw
DocID025202 Rev 7
21 20 19 18
TR21 TR20 TR19 TR18
rw rw rw rw
5 4 3 2
TR5 TR4 TR3 TR2
rw rw rw rw
21 20 19 18
TR21 TR20 TR19 TR18
rw rw rw rw
5 4 3 2
TR5 TR4 TR3 TR2
rw rw rw rw
RM0365
17 16
TR17 TR16
rw rw
1 0
TR1 TR0
rw rw
17 16
TR17 TR16
rw rw
1 0
TR1 TR0
rw rw