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General-purpose and alternate-function I/Os (GPIOs and AFIOs)
RM0008
8.2.4
Port output data register (GPIOx_ODR) (x=A..G)
Address offset: 0x0C
Reset value: 0x0000 0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ODR15 ODR14 ODR13 ODR12 ODR11 ODR10
ODR9
ODR8
ODR7
ODR6
ODR5
ODR4
ODR3
ODR2
ODR1
ODR0
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
Bits 31:16
Reserved, always read as 0.
Bits 15:0 ODRy[15:0]: Port output data (y= 0 .. 15)
These bits can be read and written by software and can be accessed in Word mode only.
Note: For atomic bit set/reset, the ODR bits can be individually set and cleared by writing to
the GPIOx_BSRR register (x = A .. G).
8.2.5
Port bit set/reset register (GPIOx_BSRR) (x=A..G)
Address offset: 0x10
Reset value: 0x0000 0000
31
BR15
w
15
BS15
w
30
BR14
w
14
BS14
w
29
BR13
w
13
BS13
w
28
BR12
w
12
BS12
w
27
BR11
w
11
BS11
w
26
BR10
w
10
BS10
w
25
BR9
w
9
BS9
w
24
BR8
w
8
BS8
w
23
BR7
w
7
BS7
w
22
BR6
w
6
BS6
w
21
BR5
w
5
BS5
w
20
BR4
w
4
BS4
w
19
BR3
w
3
BS3
w
18
BR2
w
2
BS2
w
17
BR1
w
1
BS1
w
16
BR0
w
0
BS0
w
Bits 31:16 BRy: Port x Reset bit y (y= 0 .. 15)
These bits are write-only and can be accessed in Word mode only.
0: No action on the corresponding ODRx bit
1: Reset the corresponding ODRx bit
Note: If both BSx and BRx are set, BSx has priority.
Bits 15:0 BSy: Port x Set bit y (y= 0 .. 15)
These bits are write-only and can be accessed in Word mode only.
0: No action on the corresponding ODRx bit
1: Set the corresponding ODRx bit
150/995
Doc ID 13902 Rev 9
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