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ATSAM4S-XPLD
547
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
30.7.41 PIO Edge/Level Status Register
Name:
PIO_ELSR
Address:
0x400E0EC8 (PIOA), 0x400E10C8 (PIOB), 0x400E12C8 (PIOC)
Access:
Read-only
• P0-P31: Edge/Level Interrupt source selection.
0: The interrupt source is an Edge detection event.
1: The interrupt source is a Level detection event.
30.7.42 PIO Falling Edge/Low Level Select Register
Name:
PIO_FELLSR
Address:
0x400E0ED0 (PIOA), 0x400E10D0 (PIOB), 0x400E12D0 (PIOC)
Access:
Write-only
• P0-P31: Falling Edge/Low Level Interrupt Selection.
0: No effect.
1: The interrupt source is set to a Falling Edge detection or Low Level detection event, depending on PIO_ELSR.
31
30
29
28
27
26
25
24
P31
P30
P29
P28
P27
P26
P25
P24
23
22
21
20
19
18
17
16
P23
P22
P21
P20
P19
P18
P17
P16
15
14
13
12
11
10
9
8
P15
P14
P13
P12
P11
P10
P9
P8
7
6
5
4
3
2
1
0
P7
P6
P5
P4
P3
P2
P1
P0
31
30
29
28
27
26
25
24
P31
P30
P29
P28
P27
P26
P25
P24
23
22
21
20
19
18
17
16
P23
P22
P21
P20
P19
P18
P17
P16
15
14
13
12
11
10
9
8
P15
P14
P13
P12
P11
P10
P9
P8
7
6
5
4
3
2
1
0
P7
P6
P5
P4
P3
P2
P1
P0