Hi, i am using fx3s board, I wanted to know, whether I can pull up unused gpio pins internally or not in fx3s.
Yes Fx3s supports internal weak pull up/ pull down mode. You can set it for any pin using CyU3PGpioSetIoMode() API. You have to pass two arguments one is gpio ID and the second one is desired mode.
For more info please refer to section 22.214.171.124 of FX3 API guide.
Thanks & Regards