IOIN Register value is being read incorrectly

[mustafab0]

Hello,

I am trying to control the TMC driver using UART interface. I am able set IHOLD_IRUN and also read it. But when I try to read the IOIN register it gives me bogus values.

The following are the status of my Driver Pin: En: 1, MS1 & MS2 : 1, PDN: 1, DIR: 1.

The Binary output when reading the IOIN register is: 1010000000000000110 (0x5006 in HEX)
And using bool function to access individual pin status gives following:
ENN: 0
MS1: 1
MS2: 0
DIAG: 0
PDN_UART: 0
STEP: 0
SEL_A: 0
DIR: 0
VERSION: 0

Output doesn't change even if I manually put DIR High or Low