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王立帮
270
arduino-cli/libraries/MaxMatrix/MaxMatrix.cpp
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270
arduino-cli/libraries/MaxMatrix/MaxMatrix.cpp
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/*
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* MaxMatrix
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* Version 1.0 Feb 2013
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* Copyright 2013 Oscar Kin-Chung Au
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*/
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#include "Arduino.h"
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#include "MaxMatrix.h"
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MaxMatrix::MaxMatrix(byte _data, byte _load, byte _clock, byte _num)
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{//_num为LED矩阵个数
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data = _data;
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load = _load;
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clock = _clock;
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num = _num;
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for(int i=0;i<64;i++)
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status[i]=0x00;
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for (int i=0; i<80; i++)
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buffer[i] = 0;
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}
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void MaxMatrix::init()
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{
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pinMode(data, OUTPUT);
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pinMode(clock, OUTPUT);
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pinMode(load, OUTPUT);
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digitalWrite(clock, HIGH);
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setCommand(max7219_reg_scanLimit, 0x07);
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setCommand(max7219_reg_decodeMode, 0x00); // using an led matrix (not digits)
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setCommand(max7219_reg_shutdown, 0x01); // not in shutdown mode
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setCommand(max7219_reg_displayTest, 0x00); // no display test
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// empty registers, turn all LEDs off
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clear();
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setIntensity(0x0f); // the first 0x0f is the value you can set
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}
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void MaxMatrix::setIntensity(byte intensity)
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{
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setCommand(max7219_reg_intensity, intensity);
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}
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void MaxMatrix::clear()
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{
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for (int i=0; i<8; i++)
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setColumnAll(i,0);
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for (int i=0; i<80; i++)
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buffer[i] = 0;
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}
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void MaxMatrix::setCommand(byte command, byte value)
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{
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digitalWrite(load, LOW);
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for (int i=0; i<num; i++)
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{
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shiftOut(data, clock, MSBFIRST, command);
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shiftOut(data, clock, MSBFIRST, value);
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}
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digitalWrite(load, LOW);
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digitalWrite(load, HIGH);
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}
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/***************************************************************************
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Function: setRow()
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Description: 更新一行LED状态
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Calls:
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Called By:
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Input: 1.int addr : 级联中的max7219地址
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2.int row ：LED所在行
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3.byte value ：该行LED状态
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Output:
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Return:
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Others:
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***************************************************************************/
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void MaxMatrix::setRow(int addr, int row, byte value) {
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int offset;
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if(addr<0 || addr>=num)
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return;
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if(row<0 || row>7)
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return;
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offset=addr*8;
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status[offset+row]=value;
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spiTransfer(addr, row+1,status[offset+row]);
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}
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void MaxMatrix::setColumn(byte col, byte value)
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{
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int n = col / 8;
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int c = col % 8;
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digitalWrite(load, LOW);
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for (int i=0; i<num; i++)
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{
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if (i == n)
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{
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shiftOut(data, clock, MSBFIRST, c + 1);
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shiftOut(data, clock, MSBFIRST, value);
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}
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else
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{
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shiftOut(data, clock, MSBFIRST, 0);
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shiftOut(data, clock, MSBFIRST, 0);
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}
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}
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digitalWrite(load, LOW);
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digitalWrite(load, HIGH);
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buffer[col] = value;
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}
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void MaxMatrix::setColumnAll(byte col, byte value)
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{
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digitalWrite(load, LOW);
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for (int i=0; i<num; i++)
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{
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shiftOut(data, clock, MSBFIRST, col + 1);
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shiftOut(data, clock, MSBFIRST, value);
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buffer[col * i] = value;
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}
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digitalWrite(load, LOW);
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digitalWrite(load, HIGH);
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}
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void MaxMatrix::setDot(byte col, byte row, byte value)
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{
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bitWrite(buffer[col], row, value);
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int n = col / 8;
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int c = col % 8;
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digitalWrite(load, LOW);
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for (int i=0; i<num; i++)
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{
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if (i == n)
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{
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shiftOut(data, clock, MSBFIRST, c + 1);
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shiftOut(data, clock, MSBFIRST, buffer[col]);
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}
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else
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{
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shiftOut(data, clock, MSBFIRST, 0);
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shiftOut(data, clock, MSBFIRST, 0);
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}
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}
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digitalWrite(load, LOW);
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digitalWrite(load, HIGH);
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}
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void MaxMatrix::writeSprite(int x, int y, const byte* sprite)
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{
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int w = sprite[0];
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int h = sprite[1];
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if (h == 8 && y == 0)
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for (int i=0; i<w; i++)
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{
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int c = x + i;
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if (c>=0 && c<80)
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setColumn(c, sprite[i+2]);
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}
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else
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for (int i=0; i<w; i++)
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for (int j=0; j<h; j++)
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{
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int c = x + i;
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int r = y + j;
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if (c>=0 && c<80 && r>=0 && r<8)
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setDot(c, r, bitRead(sprite[i+2], j));
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}
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}
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void MaxMatrix::reload()
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{
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for (int i=0; i<8; i++)
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{
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int col = i;
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digitalWrite(load, LOW);
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for (int j=0; j<num; j++)
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{
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shiftOut(data, clock, MSBFIRST, i + 1);
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shiftOut(data, clock, MSBFIRST, buffer[col]);
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col += 8;
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}
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digitalWrite(load, LOW);
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digitalWrite(load, HIGH);
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}
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}
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void MaxMatrix::shiftLeft(bool rotate, bool fill_zero)
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{
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byte old = buffer[0];
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int i;
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for (i=0; i<80; i++)
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buffer[i] = buffer[i+1];
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if (rotate) buffer[num*8-1] = old;
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else if (fill_zero) buffer[num*8-1] = 0;
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reload();
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}
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void MaxMatrix::shiftRight(bool rotate, bool fill_zero)
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{
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int last = num*8-1;
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byte old = buffer[last];
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int i;
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for (i=79; i>0; i--)
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buffer[i] = buffer[i-1];
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if (rotate) buffer[0] = old;
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else if (fill_zero) buffer[0] = 0;
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reload();
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}
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void MaxMatrix::shiftUp(bool rotate)
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{
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for (int i=0; i<num*8; i++)
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{
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bool b = buffer[i] & 1;
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buffer[i] >>= 1;
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if (rotate) bitWrite(buffer[i], 7, b);
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}
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reload();
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}
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void MaxMatrix::shiftDown(bool rotate)
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{
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for (int i=0; i<num*8; i++)
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{
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bool b = buffer[i] & 128;
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buffer[i] <<= 1;
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if (rotate) bitWrite(buffer[i], 0, b);
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}
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reload();
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}
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/***************************************************************************
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Function: spiTransfer()
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Description: 数据发送
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Calls:
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Called By:
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Input: 1.int addr : 级联中的max7219地址
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2.byte opcode ：操作码
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3.byte data ：操作数
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Output:
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Return:
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Others:
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***************************************************************************/
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void MaxMatrix::spiTransfer(int addr, volatile byte opcode, volatile byte data) {
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//Create an array with the data to shift out
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int offset=addr*2;
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int maxbytes=num*2;
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for(int i=0;i<maxbytes;i++) //所有级连的MAX7219先设置为无操作
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spidata[i]=(byte)0;
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//put our device data into the array
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spidata[offset+1]=opcode; //要操作的芯片设置操作码
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spidata[offset]=data; //操作数据
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//enable the line
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digitalWrite(load,LOW);
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//Now shift out the data
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for(int i=maxbytes;i>0;i--) //发送数据
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shiftOut(data,clock,MSBFIRST,spidata[i-1]);
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//latch the data onto the display
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digitalWrite(load,HIGH);
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}
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60
arduino-cli/libraries/MaxMatrix/MaxMatrix.h
Normal file
60
arduino-cli/libraries/MaxMatrix/MaxMatrix.h
Normal file
@@ -0,0 +1,60 @@
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/*
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* MaxMatrix
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* Version 1.0 Feb 2013
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* Copyright 2013 Oscar Kin-Chung Au
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*/
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#ifndef _MaxMatrix_H_
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#define _MaxMatrix_H_
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#include "Arduino.h"
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#define max7219_reg_noop 0x00
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#define max7219_reg_digit0 0x01
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#define max7219_reg_digit1 0x02
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#define max7219_reg_digit2 0x03
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#define max7219_reg_digit3 0x04
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#define max7219_reg_digit4 0x05
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#define max7219_reg_digit5 0x06
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#define max7219_reg_digit6 0x07
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#define max7219_reg_digit7 0x08
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#define max7219_reg_decodeMode 0x09
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#define max7219_reg_intensity 0x0a
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#define max7219_reg_scanLimit 0x0b
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#define max7219_reg_shutdown 0x0c
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#define max7219_reg_displayTest 0x0f
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class MaxMatrix
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{
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private:
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byte spidata[16];
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byte status[64];
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byte data;
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byte load;
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byte clock;
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byte num;
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byte buffer[80];
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void reload();
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public:
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MaxMatrix(byte data, byte load, byte clock, byte num);
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void init();
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void clear();
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void setCommand(byte command, byte value);
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void setRow(int addr, int row, byte value);
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void setIntensity(byte intensity);
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void setColumn(byte col, byte value);
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void setColumnAll(byte col, byte value);
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void setDot(byte col, byte row, byte value);
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void writeSprite(int x, int y, const byte* sprite);
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void shiftLeft(bool rotate = false, bool fill_zero = true);
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void shiftRight(bool rotate = false, bool fill_zero = true);
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void shiftUp(bool rotate = false);
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void shiftDown(bool rotate = false);
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void spiTransfer(int addr, volatile byte opcode, volatile byte data);
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};
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#endif
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