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- /*
- 【Arduino】66種傳感器模塊系列實(shí)驗(yàn)（84）
- 實(shí)驗(yàn)八十四： 8位LED數(shù)碼管MAX7219模塊
- 能通過(guò)驗(yàn)證，上傳成功
- 僅顯示“23456E86”，列為失敗的程序，技術(shù)有限，只能以后再說(shuō)了
- */
- #include <LedControl.h>
- int CLK = 4;
- int CS = 3;
- int DIN = 2; //這里定義了那三個(gè)腳
- int PIECENUM = 8;//數(shù)碼管片數(shù)
-
- void setup() {
- pinMode(CLK, OUTPUT);
- pinMode(CS, OUTPUT);
- pinMode(DIN, OUTPUT); //讓三個(gè)腳都是輸出狀態(tài)
- Delay_xms(50);
- Init_MAX7219(PIECENUM);
- Delay_xms(2000);
- }
-
- void loop() {
-
- Write_Max7219(1, 0x0f, 0x00, 0); //顯示測(cè)試：1；測(cè)試結(jié)束，正常顯示：0
-
- for (int i = 1; i <= 5; i++) {
- Write_Mynum(1, i, i + 1, 1);
- }
- //Write_Mynum(1, 7, '_', 0);
- // Write_Mynum(1, 8, '_', 0);
- for (int i = 1; i <= 8; i++) {
- Write_Mynum(2, i, 2, 0);
- }
-
- for (int i = 1; i <= 8; i++) {
- Write_Mynum(3, i, 3, 0);
- }
-
- for (int i = 1; i <= 8; i++) {
- Write_Mynum(4, i, 8 - i, 1);
- }
-
- while (1);
- }
-
-
- void Delay_xms(unsigned int x)
- {
- unsigned int i, j;
- for (i = 0; i < x; i++)
- for (j = 0; j < 112; j++);
- }
-
- //切換地址，方便寫(xiě)
- void Write_Mynum(int pnum, unsigned char address, unsigned char dat , int dp) {
- Write_Max7219(pnum, 9 - address, dat, dp);
- }
-
- //功能：向MAX7219寫(xiě)入字節(jié)
- //入口參數(shù)：DATA,dp顯示小數(shù)點(diǎn)與否
- void Write_Max7219_byte(unsigned char DATA, int dp)
- {
- unsigned char i;
- digitalWrite(CS, LOW);
- for (i = 8; i >= 1; i--)
- {
- digitalWrite(CLK, LOW);
- if (i == 8 && dp == 1)
- digitalWrite(DIN, HIGH);
- else {
- if (DATA & 0X80)
- digitalWrite(DIN, HIGH);
- else
- digitalWrite(DIN, LOW);
- }
- DATA <<= 1;
- digitalWrite(CLK, HIGH);
- }
- }
-
- //功能：向MAX7219寫(xiě)入數(shù)據(jù)
- //入口參數(shù)：pnum數(shù)碼管片序號(hào),address,dat,dp顯示小數(shù)點(diǎn)與否
- void Write_Max7219(int pnum, unsigned char address, unsigned char dat, int dp)
- {
- digitalWrite(CS, LOW);
- Write_Max7219_byte(address, 0); //寫(xiě)入地址，即數(shù)碼管編號(hào)
- Write_Max7219_byte(dat, dp); //寫(xiě)入數(shù)據(jù)，即數(shù)碼管顯示數(shù)字
- if (pnum > 1) {
- digitalWrite(CLK, HIGH);
- for (int i = 1; i < pnum; i++) {
- Write_Max7219_byte(0X00, 0);
- Write_Max7219_byte(0X00, 0);
- }
- }
- digitalWrite(CS, HIGH);
- }
-
-
- //Max7219初始化
- void Init_MAX7219(int pienum)
- {
- for (int i = 1 ; i <= pienum ; i++) {
- Write_Max7219(i, 0x09, 0xff, 0); //譯碼方式：BCD碼
- Write_Max7219(i, 0x0a, 0x03, 0); //參數(shù)3：亮度
- Write_Max7219(i, 0x0b, 0x07, 0); //掃描界限；參數(shù)3：8個(gè)數(shù)碼管顯示
- Write_Max7219(i, 0x0c, 0x01, 0); //掉電模式：參數(shù)3：0，普通模式：1
- Write_Max7219(i, 0x0f, 0x01, 0); //顯示測(cè)試：參數(shù)3：1；測(cè)試結(jié)束，正常顯示：0
- }
- }
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樓主: eagler8
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