Andy K / MODMAX7456

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Embed: (wiki syntax)

« Back to documentation index

OSD7456 Class Reference
Public Member Functions | Data Fields

OSD7456 Class Reference

OSD7456 module. More...

#include <OSD7456.h>

Public Member Functions

 OSD7456 (PinName mosi, PinName miso, PinName sclk, const char *name, PinName cs, PinName rst, PinName vsync)
 OSD7456 constructor.
 OSD7456 (PinName mosi, PinName miso, PinName sclk, PinName cs, PinName rst, PinName vsync)
 OSD7456 constructor.
int print (int line, char *s)
 print()
int print (int x, int y, char *s)
 print()
int print (int line, char *s, char a)
 print()
int print (int x, int y, char *s, char attrib)
 print()
void clear (int line)
 clear()
template<typename T >
void attach_vsync (T *tptr, void(T::*mptr)(void))
 Attach a user callback object/method to call when the vsync signal activates.
void attach_vsync (void(*fptr)(void))
 Attach a user callback function pointer to call when the vsync signal activates.
__INLINE int print0 (char *s)

Data Fields

FunctionPointer cb_vsync
 A callback object for the 1PPS user API.

Detailed Description

OSD7456 module.

The OSD7456 is a wrapper around the MAX7456 that abstracts the hardware into a simple to use screen writer system. It provides buffered output. To ensure a "flicker free" display, the buffers are written to the MAX7456 chip at the start of the vertical sync period.

See also:
http://mbed.org/cookbook/
example2.cpp

Example: 

 #include "mbed.h"
 #include "OSD7456.h"
 
 DigitalOut led1(LED1);
 
 OSD7456 *osd;
 
 int main() {
     
     osd = new OSD7456(p5, p6, p7, p8, p20, p15);
     
     osd->print(1, "Hello World");
     osd->print2("This blinks", MAX7456::Blink);
     osd->print3("Background", MAX7456::LocalBG);    
     osd->print(5, 4, "Positioned");
     osd->print(5, 5, "Positioned", MAX7456::LocalBG);
     osd->print(3, 7, "Test");
     osd->print(12, 7, "Test", MAX7456::LocalBG | MAX7456::Blink);
     
     while(1) {
         led1 = 1;
         wait(0.5);        
         led1 = 0;
         wait(0.5);    
     }
 }

Definition at line 81 of file OSD7456.h.

Constructor & Destructor Documentation

OSD7456 ( PinName  mosi,
PinName  miso,
PinName  sclk,
const char *  name,
PinName  cs,
PinName  rst,
PinName  vsync 
)

OSD7456 constructor.

The OSD7456 constructor.

Parameters:
misoPinName p5 or p11
mosiPinName p6 or p12
sclkPinName p7 pr p13
nameOptional const char * SSP object name
csPinName CS signal
rstPinName RESET signal
vsyncPinName Vertical sync signal

Definition at line 98 of file OSD7456.h.

OSD7456 ( PinName  mosi,
PinName  miso,
PinName  sclk,
PinName  cs,
PinName  rst,
PinName  vsync 
)

OSD7456 constructor.

The OSD7456 constructor.

Parameters:
misoPinName p5 or p11
mosiPinName p6 or p12
sclkPinName p7 pr p13
csPinName CS signal
rstPinName RESET signal
vsyncPinName Vertical sync signal

Definition at line 115 of file OSD7456.h.

Member Function Documentation

void attach_vsync ( T *  tptr,
void(T::*)(void)  mptr 
)

Attach a user callback object/method to call when the vsync signal activates.

Parameters:
tptrpointer to the object to call the member function on
mptrpointer to the member function to be called

Definition at line 220 of file OSD7456.h.

void attach_vsync ( void(*)(void)  fptr )

Attach a user callback function pointer to call when the vsync signal activates.

Parameters:
fptrCallback function pointer

Definition at line 228 of file OSD7456.h.

void clear ( int  line )

clear()

Clear the line number supplied.

Parameters:
lineThe line number to clear.

Definition at line 35 of file OSD7456.cpp.

int print ( int  x,
int  y,
char *  s,
char  attrib 
)

print()

Print ASCII text on line y at position x

Parameters:
xThe line position to print at.
yThe line to print on.
sA pointer to the null terminated string to print.
aAn attribute byte to apply to the string.

Definition at line 98 of file OSD7456.cpp.

int print ( int  line,
char *  s 
)

print()

Print ASCII text at line.

Parameters:
lineThe line number to print at.
sA pointer to the null terminated string to print.

Definition at line 61 of file OSD7456.cpp.

int print ( int  x,
int  y,
char *  s 
)

print()

Print ASCII text on line y at position x

Parameters:
xThe line position to print at.
yThe line to print on.
sA pointer to the null terminated string to print.

Definition at line 86 of file OSD7456.cpp.

int print ( int  line,
char *  s,
char  a 
)

print()

Print ASCII text on line y at position x with attribute.

Parameters:
xThe line position to print at.
yThe line to print on.
sA pointer to the null terminated string to print.
aAn attribute byte to apply to the string.

Definition at line 73 of file OSD7456.cpp.

__INLINE int print0 ( char *  s )

Definition at line 176 of file OSD7456.h.

Field Documentation

FunctionPointer cb_vsync

A callback object for the 1PPS user API.

Definition at line 231 of file OSD7456.h.

Generated on Wed Jul 13 2022 11:53:43 by  doxygen 1.7.2