Type Alias D4 

pub type D4 = PD4;

Available on crate feature board-selected and (crate features arduino-nano or arduino-uno or nano168 or sparkfun-promini-3v3 or sparkfun-promini-5v) only.

D4

• XCK (USART external clock input/output)
• T0 (Timer/Counter 0 external counter input)
• PCINT20 (pin change interrupt 20)

Aliased Type

pub struct D4 { /* private fields */ }