$_READKEY always reads 0 on 2020 Ducky pad

[jupiterbjy]

HW/SW details

• duckyPad(2020)

• Serial DP20_75346319

• Firmware 1.3.0

• Configurator 1.4.0

• autoswitcher 0.0.7

• Win11 x64 Education

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Issue

From document:

$_READKEY (RO)

Get the key that is being pressed.
Returns 0 if no key is pressed. 1 to 17 otherwise.

However with following:

OLED_CLEAR
OLED_CURSOR 0 0
OLED_PRINT $_READKEY
OLED_UPDATE

Regardless of saving $_READKEY value to other variable or not, it will always return 0.

(keycap intentionally rotated as I use duckypad horizontally)