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RM0461
14.6.6
EXTI falling trigger selection register (EXTI_FTSR2)
Address offset: 0x024
Reset value: 0x0000 0000
Contains only register bits for configurable events.
31
30
29
Res.
Res.
Res.
Res.
15
14
13
Res.
Res.
FT45
Res.
rw
Bits 31:14 Reserved, must be kept at reset value.
Bit 13 FT45: falling trigger event configuration bit of configurable event input 45
Note: The configurable event inputs are edge triggered. No glitch must be generated on
Bits 12:3 Reserved, must be kept at reset value.
Bit 2 FT34: falling trigger event configuration bit of configurable event input 34
Bits 1:0 Reserved, must be kept at reset value.
14.6.7
EXTI software interrupt event register (EXTI_SWIER2)
Address offset: 0x028
Reset value: 0x0000 0000
Contains only register bits for configurable events.
31
30
29
Res.
Res.
Res.
Res.
15
14
13
Res.
Res.
SWI45
Res.
rw
28
27
26
25
Res.
Res.
Res.
12
11
10
9
Res.
Res.
Res.
0: Falling trigger disabled (for event and interrupt) for input line
1: Falling trigger enabled (for event and interrupt) for input line
these inputs. If a falling edge on the configurable event input occurs while writing to the
register, the associated pending bit is not set.
Rising and falling edge triggers can be set for the same configurable event input. In this
case, both edges generate a trigger.
28
27
26
25
Res.
Res.
Res.
12
11
10
9
Res.
Res.
Res.
Extended interrupts and event controller (EXTI)
24
23
22
Res.
Res.
Res.
8
7
6
Res.
Res.
Res.
24
23
22
Res.
Res.
Res.
8
7
6
Res.
Res.
Res.
RM0461 Rev 5
21
20
19
18
Res.
Res.
Res.
Res.
5
4
3
2
Res.
Res.
Res.
FT34
rw
21
20
19
18
Res.
Res.
Res.
Res.
5
4
3
2
Res.
Res.
Res.
SWI34
rw
17
16
Res.
Res.
1
0
Res.
Res.
17
16
Res.
Res.
1
0
Res.
Res.
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