Daniel Worrall / dispBoB

6 x 7 segment display library for PCA9637 driven breakout board

Dependents:   FTSE100 InternetDispBoB digitalThermometer Counter ... more

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dispBoB Class Reference
Public Member Functions

dispBoB Class Reference

dispBoB class, defined on the I2C master bus More...

#include <dispBoB.h>

Public Member Functions

 dispBoB (PinName sda, PinName scl, PinName en)
 Create a dispBoB object defined on the I2C master bus.
void init (void)
 Initialise device.
virtual void cls (void)
 Clear screen.
virtual void locate (char pos)
 Set cursor position.
void scroll (string str, float speed)
 Write a scrolling string (right to left) to display.
void bus (short leds)
 Same functionality as the bus() function on the PCA9635.
int putc (int c)
 Write a character to the display.
int printf (const char *format,...)
 Write a formated string to the LCD.

Detailed Description

dispBoB class, defined on the I2C master bus

Example: 

 #include "mbed.h"
 #include "dispBoB.h"

 dispBoB db(p28, p27, p26);
 string str = "This is London calling";

 int main() {
     db.cls();
     while(1){
         db.scroll(str, 0.25);
     }
 }

Definition at line 31 of file dispBoB.h.

Constructor & Destructor Documentation

dispBoB ( PinName  sda,
PinName  scl,
PinName  en 
)

Create a dispBoB object defined on the I2C master bus.

Parameters:
sdaI2C data line
sclI2C clock line
enenable line

Definition at line 37 of file dispBoB.cpp.

Member Function Documentation

void bus ( short  leds )

Same functionality as the bus() function on the PCA9635.

Parameters:
ledsSet output according to parameter value - e.g. 0x0003 >> p0 & p1 high, rest low

Definition at line 126 of file dispBoB.cpp.

void cls ( void   ) [virtual]

Clear screen.

Definition at line 48 of file dispBoB.cpp.

void init ( void   )

Initialise device.

Definition at line 40 of file dispBoB.cpp.

void locate ( char  pos ) [virtual]

Set cursor position.

Parameters:
posdisplay location left to right (0-5)

Definition at line 57 of file dispBoB.cpp.

int printf ( const char *  format,
  ... 
)

Write a formated string to the LCD.

Parameters:
formatA printf-style format string, followed by the variables to use in formating the string. N.B. it will only display the first 6 characters.
int putc ( int  c )

Write a character to the display.

Parameters:
cThe character to write to the display
void scroll ( string  str,
float  speed 
)

Write a scrolling string (right to left) to display.

Parameters:
strString to be displayed (no punctuation)
speedduration of each frame (seconds)

Definition at line 108 of file dispBoB.cpp.

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