SHIFTREGISTER

Digital Shift Registers. More...

Detailed Description

Digital Shift Registers.

Classes
class	daisy::ShiftRegister4021< num_daisychained, num_parallel >
	Device Driver for CD4021 shift register. More...
class	daisy::ShiftRegister595
	Device Driver for 8-bit shift register. CD74HC595 - 8-bit serial to parallel output shift. More...

Enumerations
enum	daisy::ShiftRegister595::Pins { daisy::ShiftRegister595::PIN_LATCH , daisy::ShiftRegister595::PIN_CLK , daisy::ShiftRegister595::PIN_DATA , daisy::ShiftRegister595::NUM_PINS }

Functions
	daisy::ShiftRegister595::ShiftRegister595 ()
	daisy::ShiftRegister595::~ShiftRegister595 ()
void	daisy::ShiftRegister595::Init (Pin *pin_cfg, size_t num_daisy_chained=1)
void	daisy::ShiftRegister595::Set (uint8_t idx, bool state)
void	daisy::ShiftRegister595::Write ()

Enumeration Type Documentation

Pins

enum daisy::ShiftRegister595::Pins

The following pins correspond to the hardware connections to the 595.

Note

TODO: This should probably be switched to using a pin config structure similar to other drivers

Enumerator
PIN_LATCH
PIN_CLK	LATCH corresonds to Pin 12 "RCLK"
PIN_DATA	CLK corresponds to Pin 11 "SRCLK"
NUM_PINS	DATA corresponds to Pin 14 "SER"

Function Documentation

Init()

void daisy::ShiftRegister595::Init	(	Pin *	pin_cfg,
		size_t	num_daisy_chained = 1
	)

Initializes the GPIO, and data for the ShiftRegister

Parameters

pin_cfg	is an array of Pin corresponding the the Pins enum above.
num_daisy_chained	(default = 1) is the number of 595 devices daisy chained together.

Set()

void daisy::ShiftRegister595::Set	(	uint8_t	idx,
		bool	state
	)

Sets the state of the specified output.

Parameters

idx	The index starts with QA on the first device and ends with QH on the last device.
state	A true state will set the output HIGH, while a false state will set the output LOW.

ShiftRegister595()

daisy::ShiftRegister595::ShiftRegister595 ( )

inline

Write()

void daisy::ShiftRegister595::Write

(

)

Writes the states of shift register out to the connected devices.

~ShiftRegister595()

daisy::ShiftRegister595::~ShiftRegister595 ( )

inline