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| // MatMatrix.cpp
/\*
\* MaxMatrix
\* Version 1.0 Feb 2013
\* Copyright 2013 Oscar Kin-Chung Au
\*/
#include "Arduino.h"
#include "MaxMatrix.h"
MaxMatrix::MaxMatrix(byte _data, byte _load, byte _clock, byte _num)
{
data = _data;
load = _load;
clock = _clock;
num = _num;
for (int i=0; i<80; i++)
buffer[i] = 0;
}
void MaxMatrix::init()
{
pinMode(data, OUTPUT);
pinMode(clock, OUTPUT);
pinMode(load, OUTPUT);
digitalWrite(clock, HIGH);
setCommand(max7219_reg_scanLimit, 0x07);
setCommand(max7219_reg_decodeMode, 0x00); // using an led matrix (not digits)
setCommand(max7219_reg_shutdown, 0x01); // not in shutdown mode
setCommand(max7219_reg_displayTest, 0x00); // no display test
// empty registers, turn all LEDs off
clear();
setIntensity(0x0f); // the first 0x0f is the value you can set
}
void MaxMatrix::setIntensity(byte intensity)
{
setCommand(max7219_reg_intensity, intensity);
}
void MaxMatrix::clear()
{
for (int i=0; i<8; i++)
setColumnAll(i,0);
for (int i=0; i<80; i++)
buffer[i] = 0;
}
void MaxMatrix::setCommand(byte command, byte value)
{
digitalWrite(load, LOW);
for (int i=0; i<num; i++)
{
shiftOut(data, clock, MSBFIRST, command);
shiftOut(data, clock, MSBFIRST, value);
}
digitalWrite(load, LOW);
digitalWrite(load, HIGH);
}
void MaxMatrix::setColumn(byte col, byte value)
{
int n = col / 8;
int c = col % 8;
digitalWrite(load, LOW);
for (int i=0; i<num; i++)
{
if (i == n)
{
shiftOut(data, clock, MSBFIRST, c + 1);
shiftOut(data, clock, MSBFIRST, value);
}
else
{
shiftOut(data, clock, MSBFIRST, 0);
shiftOut(data, clock, MSBFIRST, 0);
}
}
digitalWrite(load, LOW);
digitalWrite(load, HIGH);
buffer[col] = value;
}
void MaxMatrix::setColumnAll(byte col, byte value)
{
digitalWrite(load, LOW);
for (int i=0; i<num; i++)
{
shiftOut(data, clock, MSBFIRST, col + 1);
shiftOut(data, clock, MSBFIRST, value);
buffer[col \* i] = value;
}
digitalWrite(load, LOW);
digitalWrite(load, HIGH);
}
void MaxMatrix::setDot(byte col, byte row, byte value)
{
bitWrite(buffer[col], row, value);
int n = col / 8;
int c = col % 8;
digitalWrite(load, LOW);
for (int i=0; i<num; i++)
{
if (i == n)
{
shiftOut(data, clock, MSBFIRST, c + 1);
shiftOut(data, clock, MSBFIRST, buffer[col]);
}
else
{
shiftOut(data, clock, MSBFIRST, 0);
shiftOut(data, clock, MSBFIRST, 0);
}
}
digitalWrite(load, LOW);
digitalWrite(load, HIGH);
}
void MaxMatrix::writeSprite(int x, int y, const byte\* sprite)
{
int w = sprite[0];
int h = sprite[1];
if (h == 8 && y == 0)
for (int i=0; i<w; i++)
{
int c = x + i;
if (c>=0 && c<80)
setColumn(c, sprite[i+2]);
}
else
for (int i=0; i<w; i++)
for (int j=0; j<h; j++)
{
int c = x + i;
int r = y + j;
if (c>=0 && c<80 && r>=0 && r<8)
setDot(c, r, bitRead(sprite[i+2], j));
}
}
void MaxMatrix::reload()
{
for (int i=0; i<8; i++)
{
int col = i;
digitalWrite(load, LOW);
for (int j=0; j<num; j++)
{
shiftOut(data, clock, MSBFIRST, i + 1);
shiftOut(data, clock, MSBFIRST, buffer[col]);
col += 8;
}
digitalWrite(load, LOW);
digitalWrite(load, HIGH);
}
}
void MaxMatrix::shiftLeft(bool rotate, bool fill_zero)
{
byte old = buffer[0];
int i;
for (i=0; i<80; i++)
buffer[i] = buffer[i+1];
if (rotate) buffer[num\*8-1] = old;
else if (fill_zero) buffer[num\*8-1] = 0;
reload();
}
void MaxMatrix::shiftRight(bool rotate, bool fill_zero)
{
int last = num\*8-1;
byte old = buffer[last];
int i;
for (i=79; i>0; i--)
buffer[i] = buffer[i-1];
if (rotate) buffer[0] = old;
else if (fill_zero) buffer[0] = 0;
reload();
}
void MaxMatrix::shiftUp(bool rotate)
{
for (int i=0; i<num\*8; i++)
{
bool b = buffer[i] & 1;
buffer[i] >>= 1;
if (rotate) bitWrite(buffer[i], 7, b);
}
reload();
}
void MaxMatrix::shiftDown(bool rotate)
{
for (int i=0; i<num\*8; i++)
{
bool b = buffer[i] & 128;
buffer[i] <<= 1;
if (rotate) bitWrite(buffer[i], 0, b);
}
reload();
}
|
