設計了四套驅動方案：1、154+595驅動 2、154+P口驅動 3、595驅動 4、單片機P口驅動
程序為文字左移顯示
供初學者參考
單片機16×16點陣（154+595驅動）源程序如下:
- #include <intrins.h> //函數,應用于程序設計
- #include <reg52.h> //單片機頭文件
- /**********接口說明**********/
- sbit SER=P3^0; //DS 第14腳 串行數據輸入
- sbit SRCLK=P3^1; //SH_CP 第11腳 數據輸入時鐘線
- sbit LATCH=P3^2; //ST_CP 第12腳 輸出存儲器鎖存時鐘線
- sbit OE=P3^3; //OE 第13腳 輸出有效,低電平有效
-
- /**********全局變量**********/
- unsigned int word=1; //數據位指針
- unsigned char column=0; //列數,最大數16
- unsigned char time=5; //走字速度,可修改
- unsigned char code segout[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80}; //列掃描數組
- unsigned char code tab[]=
- {
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//空白位置
- /*以下文字開始*/
- 0x00,0x01,0x00,0x02,0x03,0xEC,0x02,0x20,0x02,0x20,0x02,0x28,0xFE,0x26,0x12,0x20,0x12,0x28,0x12,0x26,0x12,0x20,0x13,0xE0,0x10,0x08,0x10,0x07,0x00,0x00,0x00,0x00,//點,1
- 0x00,0x00,0x7F,0xFF,0x40,0x10,0x44,0x08,0x5B,0x10,0x60,0xE0,0x10,0x10,0x13,0x10,0x1D,0x10,0xF1,0x10,0x17,0xFF,0x11,0x10,0x11,0x10,0x11,0x10,0x10,0x10,0x00,0x00,0x00,0x00,//陣,2
- 0x08,0x20,0x06,0x20,0x40,0x7E,0x31,0x80,0x00,0x01,0x7F,0xE2,0x40,0x0C,0x4F,0xF0,0x40,0x08,0x7F,0xE4,0x00,0x00,0x1F,0xE2,0x00,0x01,0xFF,0xFE,0x00,0x00,0x00,0x00,//測,3
- 0x02,0x00,0x02,0x00,0x42,0x00,0x33,0xFC,0x00,0x08,0x09,0x14,0x09,0x06,0x09,0xFC,0x09,0x08,0x09,0x08,0xFF,0x80,0x08,0x70,0x88,0x0C,0x68,0x02,0x08,0x0F,0x00,0x00,0x00,0x00,//試,4
- 0x24,0x10,0x24,0x60,0x25,0x80,0x7F,0xFF,0xC4,0x80,0x44,0x60,0x00,0x02,0x7C,0x92,0x44,0x92,0x44,0x92,0x44,0xFE,0x44,0x92,0x44,0x92,0x7C,0x92,0x00,0x82,0x00,0x00,0x00,0x00,//程,5
- 0x00,0x02,0x00,0x0C,0x3F,0xF0,0x20,0x00,0x20,0x80,0x20,0x80,0x28,0x80,0xA8,0x82,0x6A,0x81,0x29,0xFE,0x2A,0x80,0x2C,0x80,0x28,0x80,0x20,0xA0,0x20,0xC0,0x00,0x00,0x00,0x00,//序,6
- /*以上文字結束*/
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//空白位置
- 0xBB,//結束碼
- };
-
- void Delay(unsigned char ms)
- {
- unsigned char x,y;
- for(x=ms;x>0;x--)
- for(y=124;y>0;y--);
- }
-
- void SendByte(unsigned char dat)
- {
- unsigned char i;
- for(i=0;i<8;i++)
- {
- if(dat&0x01==1)
- {
- SER=1;
- }
- else
- {
- SER=0;
- }
- dat>>=1;
- SRCLK=0;
- _nop_();
- _nop_(); //空指令
- SRCLK=1;
- }
- }
-
- void Out595(void) //給出上升沿
- {
- LATCH=0; //輸出存儲器鎖存時鐘線置0
- _nop_();
- _nop_(); //空指令
- LATCH=1; //輸出存儲器鎖存時鐘線至1,給上升沿
- }
-
- void Send_Rank(unsigned int dat)
- {
- SendByte(tab[2*dat-1]); //09~16行數據選擇
- SendByte(tab[2*dat-2]); //01~08行數據選擇
- }
-
- void main()
- {
- while(1) //無限循環
- {
- unsigned char temp=0;
- for(temp=time;temp>0;temp--) //循環掃描,可修改走字速度
- {
- for(column=0;column<16;column++) //循環掃描16列
- {
- P2=column; //列掃描程序
- Send_Rank(word); //行數據顯示程序
- Out595(); //給出上升沿
- OE=0; //74HC595輸出有效
- Delay(2);
- OE=1; //消隱
- word++; //數據位指針加1,準備顯示下一行數據
- }
- if(tab[2*word-2]==0xBB) //判斷下一個顯示數據是否為結束碼,若是往下執行
- {
- word=1; //行數據重新賦值
- }
- else
- {
- word-=16; //行數據返回前16行
- }
- }
- word++; //行數據加1,達到顯示數據左移目的
- }
- }
Keil代碼與Proteus8.15版本的仿真下載(注意:不能兼容其他版本 只能用8.15打開):
點陣.7z
(338.8 KB, 下載次數: 53)
2023-1-28 12:43 上傳
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