关于LedControl库发个例子
代码也是网上找的，部分地方做了优化
4个点阵串联的。
#include <LedControl.h>
int DIN = 2;
int CS =3;
int CLK = 4;
byte e = {0x7C, 0x7C, 0x60, 0x7C, 0x7C, 0x60, 0x7C, 0x7C}; //E
byte d = {0x78, 0x7C, 0x66, 0x66, 0x66, 0x66, 0x7C, 0x78}; //D
byte u = {0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x7E, 0x7E}; //U
byte c = {0x7E, 0x7E, 0x60, 0x60, 0x60, 0x60, 0x7E, 0x7E}; //C
byte eight = {0x7E, 0x7E, 0x66, 0x7E, 0x7E, 0x66, 0x7E, 0x7E}; //8
byte s = {0x7E, 0x7C, 0x60, 0x7C, 0x3E, 0x06, 0x3E, 0x7E}; //S
byte dot = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18}; //.
byte o = {0x7E, 0x7E, 0x66, 0x66, 0x66, 0x66, 0x7E, 0x7E}; //O
byte m = {0xE7, 0xFF, 0xFF, 0xDB, 0xDB, 0xDB, 0xC3, 0xC3}; //M
byte smile = {0x3C, 0x42, 0xA5, 0x81, 0xA5, 0x99, 0x42, 0x3C}; //笑脸
byte neutral = {0x3C, 0x42, 0xA5, 0x81, 0xBD, 0x81, 0x42, 0x3C}; //标准脸
LedControl lc = LedControl(DIN, CLK, CS, 4);
void setup() {
for(int index=0;index<lc.getDeviceCount();index++) {
lc.shutdown(index, false); //启动时，MAX72XX处于省电模式
lc.setIntensity(index, 4); //将亮度设置为最大值
lc.clearDisplay(index); //清除显示
}
}
void loop() {
printByte(smile);//显示
delay(1000);//延时1秒
printByte(neutral);//显示标准脸
delay(1000);
}
//点阵显示函数
void printByte(byte character [])
{
int i = 0;
for (i = 0; i < 8; i++)
{
lc.setRow(0, i, character);
lc.setRow(1, i, character);
lc.setRow(2, i, character);
lc.setRow(3, i, character);
}
}
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