Can anyone explain these lines ?
void pinMode(uint8_t pin) //OUTPUT
{
volatile uint32_t *config;
config = portConfigRegister(pin);
*portModeRegister(pin) |= digitalPinToBitMask(pin);
*config = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(1);
}
This sets the pin into...