TM1638plus_common Class Reference

The base Class , used to store common data & functions for all models types. More...

#include <TM1638plus_common_RDL.hpp>

Inheritance diagram for TM1638plus_common:

Public Types
enum	AlignTextType_e : uint8_t { TMAlignTextRight = 1 , TMAlignTextLeft = 2 , TMAlignTextZeros = 3 }
enum	TMOffsetsMasks : uint8_t { TM_ASCII_OFFSET = 0x20 , TM_HEX_OFFSET = 0x10 , TM_DOT_MASK_DEC = 0x80 , TM_BRIGHT_MASK = 0x07 }

Public Member Functions
	TM1638plus_common (uint8_t strobe, uint8_t clock, uint8_t data, int gpioDev)
	Constructor for class TM1638plus_common.
void	reset (void)
	Reset / clear the display.
rdlib::Return_Codes_e	displayBegin (void)
	Begin method , sets pin modes and activate display.
void	brightness (uint8_t brightness)
	Sets the brightness level of segments in display on a scale of brightness.
uint16_t	TMCommDelayGet (void)
	get the TM comm delay.
void	TMCommDelayset (uint16_t)
	set the TM comm delay.
rdlib::Return_Codes_e	displayClose (void)
	Close method , frees GPIO and deactivate display.

Protected Types
enum	TMCommands : uint8_t {   TM_ACTIVATE = 0x8F , TM_BUTTONS_MODE = 0x42 , TM_WRITE_LOC = 0x44 , TM_WRITE_INC = 0x40 ,   TM_SEG_ADR = 0xC0 , TM_LEDS_ADR = 0xC1 , TM_BRIGHT_ADR = 0x88 }

Protected Member Functions
void	sendCommand (uint8_t value)
	Send command to display.
void	sendData (uint8_t data)
	Send Data to display.
uint8_t	HighFreqshiftin (void)
	Shifts in a byte of data from the Tm1638 SPI-like bus.
void	HighFreqshiftOut (uint8_t val)
	Shifts out a byte of data on to the Tm1638 SPI-like bus.

Protected Attributes
uint8_t	_Display_CS
uint8_t	_Display_SDATA
uint8_t	_Display_SCLK
const uint8_t	_TMDisplaySize = 8
int	_DeviceNumGpioChip = 0
int	_GpioHandle = 0

Private Attributes
uint16_t	_TMCommDelay = 1
const uint8_t	_TMDefaultBrightness = 0x02

Additional Inherited Members
Static Protected Member Functions inherited from SevenSegmentFont
static const uint8_t *	pFontSevenSegptr ()
	Retrieves a pointer to the seven-segment font data table.

Detailed Description

The base Class , used to store common data & functions for all models types.

Member Enumeration Documentation

AlignTextType_e

enum TM1638plus_common::AlignTextType_e : uint8_t

Alignment of text on display

Enumerator
TMAlignTextRight	Align text to the right on display
TMAlignTextLeft	Align text to the left on display
TMAlignTextZeros	Add leading zeros to the text

TMCommands

enum TM1638plus_common::TMCommands : uint8_t

protected

Tm1638 register commands

Enumerator
TM_ACTIVATE	Start up
TM_BUTTONS_MODE	Buttons mode
TM_WRITE_LOC	Write to a location
TM_WRITE_INC	Incremental write
TM_SEG_ADR	leftmost segment Address C0 C2 C4 C6 C8 CA CC CE
TM_LEDS_ADR	Leftmost LED address C1 C3 C5 C7 C9 CB CD CF
TM_BRIGHT_ADR	Brightness address

TMOffsetsMasks

enum TM1638plus_common::TMOffsetsMasks : uint8_t

Display Offsets and Masks

Enumerator
TM_ASCII_OFFSET	32 Ascii table offset to jump over first missing 32 chars
TM_HEX_OFFSET	16 Ascii table offset to reach number position
TM_DOT_MASK_DEC	128 Mask to switch on decimal point in seven seg.
TM_BRIGHT_MASK	Brightness mask

Constructor & Destructor Documentation

TM1638plus_common()

TM1638plus_common::TM1638plus_common	(	uint8_t	strobe,
		uint8_t	clock,
		uint8_t	data,
		int	gpioDev
	)

Constructor for class TM1638plus_common.

Parameters

strobe	STB pin
clock	CLk pin
data	DIO pin
gpioDev	The device number of a gpiochip.

Member Function Documentation

brightness()

void TM1638plus_common::brightness

(

uint8_t

brightness

)

Sets the brightness level of segments in display on a scale of brightness.

Parameters

brightness

byte with value 0 to 7 The DEFAULT_BRIGHTNESS = 0x02

displayBegin()

rdlib::Return_Codes_e TM1638plus_common::displayBegin

(

void

)

Begin method , sets pin modes and activate display.

Returns

1. rdlib::Success
2. rdlib::GpioChipDevice;
3. rdlib::GpioPinClaim

Note

Call in Setup

displayClose()

rdlib::Return_Codes_e TM1638plus_common::displayClose

(

void

)

Close method , frees GPIO and deactivate display.

Returns

1. rdlib::Success
2. rdlib::GpioChipDevice
3. rdlib::GpioPinFree

Note

call at end of program

HighFreqshiftin()

uint8_t TM1638plus_common::HighFreqshiftin ( void  )

protected

Shifts in a byte of data from the Tm1638 SPI-like bus.

Returns

Data byte

Note

_TMCommDelay microsecond delay may have to be adjusted depending on processor

HighFreqshiftOut()

void TM1638plus_common::HighFreqshiftOut ( uint8_t  val )

protected

Shifts out a byte of data on to the Tm1638 SPI-like bus.

Parameters

val	The byte of data to shift out

Note

_TMCommDelay microsecond delay may have to be adjusted depending on processor

reset()

void TM1638plus_common::reset

(

void

)

Reset / clear the display.

Note

The display is cleared by writing zero to all data segment addresses.

sendCommand()

void TM1638plus_common::sendCommand ( uint8_t  value )

protected

Send command to display.

Parameters

value

command byte to send

sendData()

void TM1638plus_common::sendData ( uint8_t  data )

protected

Send Data to display.

Parameters

data	Data byte to send

TMCommDelayGet()

uint16_t TM1638plus_common::TMCommDelayGet

(

void

)

get the TM comm delay.

Returns

The TM comm delay in uS

TMCommDelayset()

void TM1638plus_common::TMCommDelayset

(

uint16_t

CommDelay

)

set the TM comm delay.

Parameters

CommDelay

The TM comm delay in uS

Member Data Documentation

_DeviceNumGpioChip

int TM1638plus_common::_DeviceNumGpioChip = 0

protected

The device number of a gpiochip ls /dev/gpio

_Display_CS

uint8_t TM1638plus_common::_Display_CS

protected

GPIO connected to STB on Tm1638

_Display_SCLK

uint8_t TM1638plus_common::_Display_SCLK

protected

GPIO connected to CLk on Tm1638

_Display_SDATA

uint8_t TM1638plus_common::_Display_SDATA

protected

GPIO connected to DIO on Tm1638

_GpioHandle

int TM1638plus_common::_GpioHandle = 0

protected

This returns a handle to a gpiochip device.

_TMCommDelay

uint16_t TM1638plus_common::_TMCommDelay = 1

private

uS delay used in communications , User adjust

_TMDefaultBrightness

const uint8_t TM1638plus_common::_TMDefaultBrightness = 0x02

private

can be 0x00 to 0x07 , User adjust

_TMDisplaySize

const uint8_t TM1638plus_common::_TMDisplaySize = 8

protected

size of display in digts

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The documentation for this class was generated from the following files:

• TM1638plus_common_RDL.hpp
• TM1638plus_common_RDL.cpp