How to read PA30 and PA31?

Hardware Arduino Zero
1

How can I disable debugging in SWD and read as PA31 (SWDIO) and PA30 (SWCLK) inputs?

2

How to read IO using register ?

3

Hi giorgio,

To check if a given input pin is high:

if (REG_PORT_IN0 & PORT_PA30)
{
  // Add your code here...
}

Where the "0" suffix of the REG_PORT_IN0 register denotes port A.

An identical, but alternative syntax is:

if (PORT->Group[PORTA].IN.reg & PORT_PA30)
{
  // Add your code here...
}