GPIO Keypad password crack

Embedded Security
1

Hello, I have the LITE ARM version of chipwhisper and my project is to guess the password from a keypad. The idea is to use the implementation of the serial password but with the GPIOs.

Is there any example about the use of the GPIOs?, I couldnt find any , I see there is a hal on the target and header to use it, but is there a code example for this?

Thanks.

2

Hi,

Our HALs are pretty minimal, only including the bare necessities to setup clock, setup trigger, setup UART, etc. We do setup GPIO as part of the trigger/UART setup, so there’s always code examples of GPIO manipulation for each target, but beyond that you’ll need to refer to the datasheet/user manual for the microcontroller you want to target.

Alex