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| #include <SPI.h>
#define DI 0 // D0, pin 5 Data In
#define DO 1 // D1, pin 6 Data Out (this is *not* MOSI)
#define USCK 2 // D2, pin 7 Universal Serial Interface clock
#define SS 3 // D3, pin 2 Slave Select
/*
* 16进制表示法，也可以写成二进制，例如B00111100（0x3c）
* 下为0-9的16进制显示
*/
byte numbers[11][8]= {
{0x3c,0x42,0x42,0x42,0x42,0x42,0x42,0x3c},
{0x08,0x18,0x28,0x08,0x08,0x08,0x08,0x7e},
{0x7e,0x02,0x02,0x7e,0x40,0x40,0x40,0x7e},
{0x7e,0x02,0x02,0x7e,0x02,0x02,0x02,0x7e},
{0x08,0x18,0x28,0x48,0xfe,0x08,0x08,0x1c},
{0x7e,0x40,0x40,0x7e,0x02,0x02,0x02,0x7e},
{0x7e,0x40,0x40,0x7e,0x42,0x42,0x42,0x7e},
{0x7e,0x02,0x04,0x08,0x10,0x10,0x10,0x10},
{0x7e,0x42,0x42,0x7e,0x42,0x42,0x42,0x7e},
{0x7e,0x42,0x42,0x7e,0x02,0x02,0x02,0x7e},
{0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff},
};
/**
* Matrix寄存器地址常量
*/
const byte NOOP=0x0; //不运行
const byte DECODEMODE=0x9; //译码模式
const byte INTENSITY=0xA; //显示强度
const byte SCANLIMIT=0xB; //扫描限制
const byte SHUTDOWN=0xC; //停机
const byte DISPLAYTEST=0xF; //显示器检测
void max7219(byte reg,byte data){
digitalWrite(SS,LOW);
SPI.transfer(reg);
SPI.transfer(data);
digitalWrite(SS,HIGH);
delay(200);
}
void setup(){
pinMode(SS,OUTPUT);
digitalWrite(SS,HIGH);
SPI.begin();
initMax();
}
void initMax(){
////清屏代码，暂不使用
/*for(byte i=0;i<sizeof(numbers[0]);i++){
max7219(i+1,0);
}*/
max7219(SCANLIMIT,7);
max7219(DECODEMODE,0);
max7219(INTENSITY,1);
max7219(DISPLAYTEST,0);
max7219(SHUTDOWN,1);
}
byte i,j;
void loop(){
for(i=0;i<11;i++){
for(j=0;j<8;j++)
max7219(j+1,numbers[i][j]);
delay(1200);
}
}
|
