利用的類似占空比調整方式實現,整體程序采用框架編程方式,移植方便,新手作品歡迎指正.
單片機源程序如下:
- #include "all.H"
- u8 data HC595_Write_Buffer[2];
- void HC595_Init()
- {
- P5M1 = 0x00;
- P5M0 = 0x30; // P5(雙雙推推雙雙雙雙)
- P3M1 = 0x00;
- P3M0 = 0x08; // P3(雙雙雙雙推雙雙雙)
- HC595_DS = 1;
- HC595_SH = 0;
- HC595_ST = 0;
- }
- void HC595_Write_Data_Drive()
- {
- u8 data i;
- HC595_DS = 1;
- HC595_SH = 0;
- HC595_ST = 0;
- for (i = 0; i < 8; i++)
- {
- HC595_SH = 0;
- HC595_DS = HC595_Write_Buffer[1] & 0x80;
- HC595_Write_Buffer[1] <<= 1;
- HC595_SH = 1;
- }
- for (i = 0; i < 8; i++)
- {
- HC595_SH = 0;
- HC595_DS = HC595_Write_Buffer[0] & 0x80;
- HC595_Write_Buffer[0] <<= 1;
- HC595_SH = 1;
- }
- HC595_ST = 1;
- HC595_SH = 0;
- HC595_DS = 1;
- HC595_ST = 0;
- }
- #include "all.H"
- u8 data SMG_Write_Buffer[8];
- bit blink_flag;
- u8 code SMG_SEG[24] = {
- 0x3F, //"0"
- 0x06, //"1"
- 0x5B, //"2"
- 0x4F, //"3"
- 0x66, //"4"
- 0x6D, //"5"
- 0x7D, //"6"
- 0x07, //"7"
- 0x7F, //"8"
- 0x6F, //"9"
- 0x77, //"A"
- 0x7C, //"B"
- 0x39, //"C"
- 0x5E, //"D"
- 0x79, //"E"
- 0x71, //"F"
- 0x76, //"H"
- 0x38, //"L"
- 0x37, //"n"
- 0x3E, //"u"
- 0x73, //"P"
- 0x5C, //"o"
- 0x40, //"-"
- 0x00, //熄滅
- };
- u8 code SMG_GRID[9] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x00};
- void SMG_Display_Ser()
- {
- static u8 count = 0;
- static bit places_Display_flag = 0;
- count++;
- if (count > 7)
- {
- count = 0;
- }
- switch (count) //判斷count的值，
- {
- case 0: //如果是0顯示第1位數碼管
- case 1: //如果是1顯示第2位數碼管
- case 2: //如果是2顯示第3位數碼管
- case 3: //如果是3顯示第4位數碼管
- case 4: //如果是4顯示第5位數碼管
- case 5: //如果是5顯示第6位數碼管
- case 6: //如果是6顯示第7位數碼管
- case 7: //如果是7顯示第8位數碼管
- if (SMG_Write_Buffer[count] != 0 && !places_Display_flag)
- {
- places_Display_flag = 1;
- }
- if (!blink_flag || !places_Display_flag)
- {
- HC595_Write_Buffer[0] = 0x00;
- HC595_Write_Buffer[1] = 0x00;
- }
- if ((blink_flag) && (places_Display_flag || count == 7))
- {
- HC595_Write_Buffer[0] = SMG_SEG[SMG_Write_Buffer[count]];
- //根據count順序，從SMG_Write_Buffer中輪流提取數據，再找到該數據的模型段碼
- HC595_Write_Buffer[1] = SMG_GRID[count]; //根據count的順序 找到對應的位選碼
- }
- HC595_Write_Data_Drive(); //緩存數據傳輸到595芯片中去
- if (count == 7)
- {
- places_Display_flag = 0;
- }
- break;
- }
- }
Keil代碼下載:
Keil代碼.7z
(17.85 KB, 下載次數: 23)
2022-11-14 23:20 上傳
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估計是：一片 595 ->接8個 seg段， 另外一片595 接 8個 位
