Button

The 4 buttons on the CT Board are “active-high”, e.g. a pressed button is read as logical “1”, and debounced.
The buttons are accessible over the memory mapped interface or on GPIO port C.

Please make sure the CT Board is in the correct mode.
Supported modes: 1, 2, 3

The code snippet bellow shows how to use the Buttons.

#include "reg_ctboard.h"
 
uint8_t data = CT_BUTTON;       /* Read all buttons into the lower nibble of a byte. */

The Registers are read only.