#include <TimerOne.h>

#include <avr/pgmspace.h>

int DataPin = 2; ?//DIN

int LoadPin = 3; ?//CS

int ClockPin = 4; //CLK

#define SCAN_LIMIT 0X0b //掃描長度寄存器

#define DECODE_MODE 0X09 ?//小數(shù)點模式寄存器

#define SHUTDOWN 0X0C ? //關(guān)閉模式寄存器

#define INTENSITY 0X0A //亮度寄存器

byte buffer[8];

const byte font[][8] PROGMEM = {

? {B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000},

? {B00000100,B00000100,B00000100,B00000100,B00000100,B00000100,B00000000,B00000100},

? {B00001010,B00001010,B00001010,B00000000,B00000000,B00000000,B00000000,B00000000},

? {B00000000,B00001010,B00011111,B00001010,B00011111,B00001010,B00011111,B00001010},

? {B00000111,B00001100,B00010100,B00001100,B00000110,B00000101,B00000110,B00011100},

? {B00011001,B00011010,B00000010,B00000100,B00000100,B00001000,B00001011,B00010011},

? {B00000110,B00001010,B00010010,B00010100,B00001001,B00010110,B00010110,B00001001},

? {B00000100,B00000100,B00000100,B00000000,B00000000,B00000000,B00000000,B00000000},

? {B00000010,B00000100,B00001000,B00001000,B00001000,B00001000,B00000100,B00000010},

? {B00001000,B00000100,B00000010,B00000010,B00000010,B00000010,B00000100,B00001000},

? {B00010101,B00001110,B00011111,B00001110,B00010101,B00000000,B00000000,B00000000},

? {B00000000,B00000000,B00001000,B00000100,B00011111,B00000100,B00000100,B00000000},

? {B00000000,B00000000,B00000000,B00000000,B00000000,B00000110,B00000100,B00001000},

? {B00000000,B00000000,B00000000,B00000000,B00001110,B00000000,B00000000,B00000000},

? {B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000100},

? {B00000001,B00000010,B00000010,B00000100,B00000100,B00001000,B00001000,B00010000},

? {B00001110,B00010001,B00010011,B00010001,B00010101,B00010001,B00011001,B00001110},

? {B00000100,B00001100,B00010100,B00000100,B00000100,B00000100,B00000100,B00011111},

? {B00001110,B00010001,B00010001,B00000010,B00000100,B00001000,B00010000,B00011111},

? {B00001110,B00010001,B00000001,B00001110,B00000001,B00000001,B00010001,B00001110},

? {B00010000,B00010000,B00010100,B00010100,B00011111,B00000100,B00000100,B00000100},

? {B00011111,B00010000,B00010000,B00011110,B00000001,B00000001,B00000001,B00011110},

? {B00000111,B00001000,B00010000,B00011110,B00010001,B00010001,B00010001,B00011110},

? {B00011111,B00000001,B00000001,B00000001,B00000010,B00000100,B00001000,B00010000},

? {B00001110,B00010001,B00010001,B00001110,B00010001,B00010001,B00010001,B00001110},

? {B00001110,B00010001,B00010001,B00001111,B00000001,B00000001,B00000001,B00000001},

? {B00000000,B00000100,B00000100,B00000000,B00000000,B00000100,B00000100,B00000000},

? {B00000000,B00000100,B00000100,B00000000,B00000000,B00000100,B00000100,B00001000},

? {B00000001,B00000010,B00000100,B00001000,B00001000,B00000100,B00000010,B00000001},

? {B00000000,B00000000,B00000000,B00011110,B00000000,B00011110,B00000000,B00000000},

? {B00010000,B00001000,B00000100,B00000010,B00000010,B00000100,B00001000,B00010000},

? {B00001110,B00010001,B00010001,B00000010,B00000100,B00000100,B00000000,B00000100},

? {B00001110,B00010001,B00010001,B00010101,B00010101,B00010001,B00010001,B00011110},

? {B00001110,B00010001,B00010001,B00010001,B00011111,B00010001,B00010001,B00010001},

? {B00011110,B00010001,B00010001,B00011110,B00010001,B00010001,B00010001,B00011110},

? {B00000111,B00001000,B00010000,B00010000,B00010000,B00010000,B00001000,B00000111},

? {B00011100,B00010010,B00010001,B00010001,B00010001,B00010001,B00010010,B00011100},

? {B00011111,B00010000,B00010000,B00011110,B00010000,B00010000,B00010000,B00011111},

? {B00011111,B00010000,B00010000,B00011110,B00010000,B00010000,B00010000,B00010000},

? {B00001110,B00010001,B00010000,B00010000,B00010111,B00010001,B00010001,B00001110},

? {B00010001,B00010001,B00010001,B00011111,B00010001,B00010001,B00010001,B00010001},

? {B00011111,B00000100,B00000100,B00000100,B00000100,B00000100,B00000100,B00011111},

? {B00011111,B00000100,B00000100,B00000100,B00000100,B00000100,B00010100,B00001000},

? {B00010001,B00010010,B00010100,B00011000,B00010100,B00010010,B00010001,B00010001},

? {B00010000,B00010000,B00010000,B00010000,B00010000,B00010000,B00010000,B00011111},

? {B00010001,B00011011,B00011111,B00010101,B00010001,B00010001,B00010001,B00010001},

? {B00010001,B00011001,B00011001,B00010101,B00010101,B00010011,B00010011,B00010001},

? {B00001110,B00010001,B00010001,B00010001,B00010001,B00010001,B00010001,B00001110},

? {B00011110,B00010001,B00010001,B00011110,B00010000,B00010000,B00010000,B00010000},

? {B00001110,B00010001,B00010001,B00010001,B00010001,B00010101,B00010011,B00001111},

? {B00011110,B00010001,B00010001,B00011110,B00010100,B00010010,B00010001,B00010001},

? {B00001110,B00010001,B00010000,B00001000,B00000110,B00000001,B00010001,B00001110},

? {B00011111,B00000100,B00000100,B00000100,B00000100,B00000100,B00000100,B00000100},

? {B00010001,B00010001,B00010001,B00010001,B00010001,B00010001,B00010001,B00001110},

? {B00010001,B00010001,B00010001,B00010001,B00010001,B00010001,B00001010,B00000100},

? {B00010001,B00010001,B00010001,B00010001,B00010001,B00010101,B00010101,B00001010},

? {B00010001,B00010001,B00001010,B00000100,B00000100,B00001010,B00010001,B00010001},

? {B00010001,B00010001,B00001010,B00000100,B00000100,B00000100,B00000100,B00000100},

? {B00011111,B00000001,B00000010,B00000100,B00001000,B00010000,B00010000,B00011111},

? {B00001110,B00001000,B00001000,B00001000,B00001000,B00001000,B00001000,B00001110},

? {B00010000,B00001000,B00001000,B00000100,B00000100,B00000010,B00000010,B00000001},

? {B00001110,B00000010,B00000010,B00000010,B00000010,B00000010,B00000010,B00001110},

? {B00000100,B00001010,B00001001,B00000000,B00000000,B00000000,B00000000,B00000000},

? {B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00011111},

? {B00001000,B00000100,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000},

? {B00000000,B00000000,B00000000,B00001110,B00010010,B00010010,B00010010,B00001111},

? {B00000000,B00010000,B00010000,B00010000,B00011100,B00010010,B00010010,B00011100},

? {B00000000,B00000000,B00000000,B00011100,B00010000,B00010000,B00010000,B00001110},

? {B00000000,B00000001,B00000001,B00000001,B00000111,B00001001,B00001001,B00000111},

? {B00000000,B00000000,B00000000,B00011100,B00010010,B00011110,B00010000,B00001110},

? {B00000000,B00000011,B00000100,B00000100,B00000110,B00000100,B00000100,B00000100},

? {B00000000,B00001110,B00001010,B00001010,B00001110,B00000010,B00000010,B00001100},

? {B00000000,B00010000,B00010000,B00010000,B00011100,B00010010,B00010010,B00010010},

? {B00000000,B00000000,B00000100,B00000000,B00000100,B00000100,B00000100,B00000100},

? {B00000000,B00000010,B00000000,B00000010,B00000010,B00000010,B00000010,B00001100},

? {B00000000,B00010000,B00010000,B00010100,B00011000,B00011000,B00010100,B00010000},

? {B00000000,B00010000,B00010000,B00010000,B00010000,B00010000,B00010000,B00001100},

? {B00000000,B00000000,B00000000,B00001010,B00010101,B00010001,B00010001,B00010001},

? {B00000000,B00000000,B00000000,B00010100,B00011010,B00010010,B00010010,B00010010},

? {B00000000,B00000000,B00000000,B00001100,B00010010,B00010010,B00010010,B00001100},

? {B00000000,B00011100,B00010010,B00010010,B00011100,B00010000,B00010000,B00010000},

? {B00000000,B00001110,B00010010,B00010010,B00001110,B00000010,B00000010,B00000001},

? {B00000000,B00000000,B00000000,B00001010,B00001100,B00001000,B00001000,B00001000},

? {B00000000,B00000000,B00001110,B00010000,B00001000,B00000100,B00000010,B00011110},

? {B00000000,B00010000,B00010000,B00011100,B00010000,B00010000,B00010000,B00001100},

? {B00000000,B00000000,B00000000,B00010010,B00010010,B00010010,B00010010,B00001100},

? {B00000000,B00000000,B00000000,B00010001,B00010001,B00010001,B00001010,B00000100},

? {B00000000,B00000000,B00000000,B00010001,B00010001,B00010001,B00010101,B00001010},

? {B00000000,B00000000,B00000000,B00010001,B00001010,B00000100,B00001010,B00010001},

? {B00000000,B00000000,B00010001,B00001010,B00000100,B00001000,B00001000,B00010000},

? {B00000000,B00000000,B00000000,B00011111,B00000010,B00000100,B00001000,B00011111},

? {B00000010,B00000100,B00000100,B00000100,B00001000,B00000100,B00000100,B00000010},

? {B00000100,B00000100,B00000100,B00000100,B00000100,B00000100,B00000100,B00000100},

? {B00001000,B00000100,B00000100,B00000100,B00000010,B00000100,B00000100,B00001000},

? {B00000000,B00000000,B00000000,B00001010,B00011110,B00010100,B00000000,B00000000},

};

//初始化寄存器

void initMAX7219() {

? pinMode(DataPin, OUTPUT);

? pinMode(LoadPin, OUTPUT);

? pinMode(ClockPin, OUTPUT);

? writeData(SCAN_LIMIT, B00000111);

? writeData(DECODE_MODE, B00000000);

? writeData(SHUTDOWN, B00000001);

? writeData(INTENSITY, B00001111);

}

//清除數(shù)據(jù)

void clearDisplay() {

? for (byte x=0; x<8; x++) {

? ? buffer[x] = B00000000;

? }

? screenUpdata();

}

//LED燈控制

void screenUpdata() {

? for (byte row = 0; row<8; row++) {

? ? writeData(row+1, buffer[row]);

? }

}

//傳入數(shù)據(jù)到寄存器

void writeData(byte msb, byte lsb) {

? digitalWrite(LoadPin, LOW);

? shiftOut(DataPin, ClockPin, MSBFIRST, (msb)); //傳入地址

? shiftOut(DataPin, ClockPin, MSBFIRST, (lsb)); //傳入?yún)?shù)

? digitalWrite(LoadPin, HIGH);

}

void scroll (char myString[], int rate) {

? byte ledOutput;

? byte firstChr, secondChr;

? byte Char1, Char2;

? byte strLength = 0;

? byte scrollBit = 0;

? byte chrIndex = 0; //初始化字符串位置指針

? unsigned long counter;

? unsigned long time;

? while (myString[strLength]){strLength++;} //獲取字符串長度

? counter = millis();

? while(chrIndex < strLength) {

? ? time = millis();

? ? if (time > (counter+rate)) {

? ? ? ?Char1 = constrain(myString[chrIndex],32,126);

? ? ? Char2 = constrain(myString[chrIndex+1],32,126);

? ? ? for (byte j = 0; j<8; j++) {

? ? ? ? firstChr = pgm_read_byte(&font[Char1-32][j]);

? ? ? ? secondChr = pgm_read_byte(&font[Char2-32][j]);

? ? ? ? ledOutput = (firstChr << scrollBit)|(secondChr >> (8-scrollBit));

? ? ? ? buffer[j] = ledOutput;

? ? ? }

? ? ? scrollBit++;

? ? ? if (scrollBit >6) {

? ? ? ? scrollBit = 0;

? ? ? ? chrIndex++;

? ? ? }

? ? ? counter = millis();

? ? }

? ?

? }

}

void setup() {

? initMAX7219();

? Timer1.initialize(10000);

? Timer1.attachInterrupt(screenUpdata);

}

void loop() {

? clearDisplay();

? scroll("Apple", 200);

? scroll("I LOVE YOU", 200);

}