General purpose and alternate function I/O (GPIO and AFIO) UM0306
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5.2.3 Port input data register (GPIOx_IDR) (x=A..E)
Address Offset: 08h
Reset value: 00000000h
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Reserved
1514131211109876543210
IDR15 IDR14 IDR13 IDR12 IDR11 IDR10 IDR9 IDR8 IDR7 IDR6 IDR5 IDR4 IDR3 IDR2 IDR1 IDR0
rrrrrrr r r rrrrrrr
Bits 31:16 Reserved, always read as 0.
Bits 31:0
IDRx[15:0]: Port input data (x= 0 .. 15)
These bits are read only and can be accessed in Word mode only. They
contain the input value of the corresponding I/O port.