Wim Huiskamp / PT6964

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PT6964 Class Reference
Public Types | Public Member Functions

PT6964 Class Reference

A class for driving Princeton PT6964 LED controller Note: the PT6964 is also available from other chipvendors eg AIP1628, HT1628, CM1628, SM1628. More...

#include <PT6964.h>

Inherited by PT6964_DVD538A.

Public Types

enum  Mode
 

Enums for display mode.

More...
typedef char DisplayData_t [PT6964_DISPLAY_MEM]
 Datatypes for display and keymatrix data.

Public Member Functions

 PT6964 (PinName mosi, PinName miso, PinName sclk, PinName cs, Mode mode=Grid7_Seg10)
 Constructor for class for driving Princeton PT6964 LED controller.
void cls ()
 Clear the screen and locate to 0.
void writeData (int address, char data)
 Write databyte to PT6964.
void writeData (DisplayData_t data, int length=PT6964_DISPLAY_MEM)
 Write Display datablock to PT6964.
bool getKeys (KeyData_t *keydata)
 Read keydata block from PT6964.
void setBrightness (char brightness=PT6964_BRT_DEF)
 Set Brightness.
void setDisplay (bool on)
 Set the Display mode On/off.

Detailed Description

A class for driving Princeton PT6964 LED controller Note: the PT6964 is also available from other chipvendors eg AIP1628, HT1628, CM1628, SM1628.

Supports 4 Grids @ 13 Segments or 5 Grids @ 12 Segments or 6 Grids @ 11 Segments or 7 Grids @ 10 Segments. Also supports a scanned keyboard of upto 20 keys. SPI bus interface device.

Definition at line 131 of file PT6964.h.

Member Typedef Documentation

typedef char DisplayData_t[PT6964_DISPLAY_MEM]

Datatypes for display and keymatrix data.

Definition at line 143 of file PT6964.h.

Member Enumeration Documentation

enum Mode

Enums for display mode.

Definition at line 135 of file PT6964.h.

Constructor & Destructor Documentation

PT6964 ( PinName  mosi,
PinName  miso,
PinName  sclk,
PinName  cs,
Mode  mode = Grid7_Seg10 
)

Constructor for class for driving Princeton PT6964 LED controller.

Constructor for class for driving PT6964 LED controller with SPI bus interface device.

Supports 4 Grids @ 13 segments or 5 Grids @ 12 segments or 6 Grids @ 11 Segments or 7 Grids @ 10 Segments. Also supports a scanned keyboard of upto 20 keys. SPI bus interface device.

Parameters:
PinNamemosi, miso, sclk, cs SPI bus pins
Modeselects either Grids/Segments (default 7 Grids @ 10 Segments)

Note: the PT6964 is also available from other chipvendors eg AIP1628, HT1628, CM1628, SM1628 Supports 4 digits @ 13 segments or 5 digits @ 12 segments or 6 Digits @ 11 Segments or 7 Digits @ 10 Segments. Also supports a scanned keyboard of upto 20 keys.

Parameters:
PinNamemosi, miso, sclk, cs SPI bus pins
Modeselects either 6 Digits of 12 Segments or 7 Digits of 10 Segments (default)

Definition at line 37 of file PT6964.cpp.

Member Function Documentation

void cls (  )

Clear the screen and locate to 0.

Definition at line 66 of file PT6964.cpp.

bool getKeys ( KeyData_t *  keydata )

Read keydata block from PT6964.

Parameters:
*keydataPtr to Array of PT6964_KEY_MEM (=5) bytes for keydata
Returns:
bool keypress True when at least one key was pressed

Note: Due to the hardware configuration the PT6964 key matrix scanner will detect multiple keys pressed at same time, but this may result in some spurious keys also being set in keypress data array. It may be best to ignore all keys in those situations. That option is implemented in this method depending on define setting.

Parameters:
*keydataPtr to Array of PT6964_KEY_MEM (=5) bytes for keydata
Returns:
bool keypress True when at least one key was pressed

Note: Due to the hardware configuration the PT6964 key matrix scanner will detect multiple keys pressed at same time, but this may also result in some spurious keys being set in keypress data array. It may be best to ignore all keys in those situations. That option is implemented in this method depending on define setting.

Definition at line 156 of file PT6964.cpp.

void setBrightness ( char  brightness = PT6964_BRT_DEF )

Set Brightness.

Parameters:
charbrightness (3 significant bits, valid range 0..7 (1/16 .. 14/14 dutycycle)
Returns:
none

Definition at line 85 of file PT6964.cpp.

void setDisplay ( bool  on )

Set the Display mode On/off.

Parameters:
booldisplay mode

Definition at line 96 of file PT6964.cpp.

void writeData ( int  address,
char  data 
)

Write databyte to PT6964.

Parameters:
intaddress display memory location to write byte
chardata byte written at given address
Returns:
none

Definition at line 113 of file PT6964.cpp.

void writeData ( DisplayData_t  data,
int  length = PT6964_DISPLAY_MEM 
)

Write Display datablock to PT6964.

Parameters:
DisplayData_tdata Array of PT6964_DISPLAY_MEM (=14) bytes for displaydata (starting at address 0)
lengthnumber bytes to write (valid range 0..PT6964_DISPLAY_MEM (=14), starting at address 0)
Returns:
none
Parameters:
DisplayData_tdata Array of PT6964_DISPLAY_MEM (=14) bytes for displaydata (starting at address 0)
lengthnumber bytes to write (valide range 0..PT6964_DISPLAY_MEM (=14), starting at address 0)
Returns:
none

Reimplemented in PT6964_DVD538A.

Definition at line 129 of file PT6964.cpp.

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