Type Alias A4 

pub type A4 = PC4;

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.

A4

• ADC4 (ADC input channel 4)
• SDA (2-wire serial bus data input/output line)
• PCINT12 (pin change interrupt 12)

Aliased Type

pub struct A4 { /* private fields */ }