GPIO I/O Utils

GPIO I/O utility functions. More...

Detailed Description

GPIO I/O utility functions.

Files
file	gpio_util.h
	GPIO I/O utility function implementations.

Functions
uint8_t	gpio_util_shiftin (gpio_t data_pin, gpio_t clock_pin)
	Shift in a byte from data_pin, create clock pulses on clock_pin.

Function Documentation

gpio_util_shiftin()

uint8_t gpio_util_shiftin	(	gpio_t	data_pin,
		gpio_t	clock_pin
	)

Shift in a byte from data_pin, create clock pulses on clock_pin.

This function has the same functionality as the Arduino shiftIn() in Advanced I/O.

Parameters

[in]	data_pin	Pin to read data from
	clock_pin	Pin to create clock pulses on

Returns

the resulting uint8_t of the shift (MSB first)