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標(biāo)題: pt6312 VFD屏幕單片機(jī)驅(qū)動(dòng)程序 [打印本頁]

作者: 51黑科技 時(shí)間: 2016-2-4 03:45
標(biāo)題: pt6312 VFD屏幕單片機(jī)驅(qū)動(dòng)程序
/*VFD專用IC練習(xí) 20111104 顯示問題澄清全部送0x0f 看是時(shí)序問題過快還是字位置開始的位置從00 開始  另外確認(rèn)連續(xù)位址增加的模式 */
#include<reg52.h>
//--------------------pt6312-----------------------
sbit STB=P3^3; // pt6312 strobe
sbit DIN=P3^4; // pt6312 data
sbit CLK=P3^5; // pt6312 clock
unsigned char TempData[12]= {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0,0xff,0,0,0};//第一步全都沒變
unsigned char adr;
unsigned char cmd1;
unsigned char cmd2;
unsigned char cmd3;
unsigned char cmd4;
bit Dat_flag;//data flag 不需要 stb變?yōu)閔i
//STB動(dòng)作
#define STB_CLR       STB=0//電平置低
#define STB_SET       STB=1//電平置高

//DIN 動(dòng)作
#define DIN_CLR       DIN=0//電平置低
#define DIN_SET       DIN=1//電平置高
//#define IO_R       SDA  //電平讀取

// CLK信號(hào)
#define CLK_CLR       CLK=0//時(shí)鐘信號(hào)
#define CLK_SET       CLK=1//電平置高

void PT6312_Write(unsigned char qdata)// 適用於命令
{
unsigned char k;
STB_CLR; //初始
for(k=0;k<8;k++)
  {
CLK_CLR;
if(qdata & 0x01)
   {
   DIN_SET;
   }
else
   {
      DIN_CLR;
   }
CLK_SET;
qdata>>=1;
  }

  if (Dat_flag)
  {
CLK_CLR;
}
else
{
STB_SET;
      }
      CLK_SET;//5 pulse time delay
      CLK_SET;//5 pulse time delay
         CLK_SET;//5 pulse time delay
         CLK_SET;//5 pulse time delay
               CLK_SET;//5 pulse time delay
}
/*-------------------------------------------

//----------------------------------------------*/

void PT6312_Init(void)
{
CLK_SET; //初始設(shè)為 HI
STB_SET; //初始設(shè)為 HI
PT6312_Write (cmd1);//CMD1 設(shè)定寫入
}

void main(void)//
{
unsigned char i;
PT6312_Init();
cmd1=0x02 ;//6 dig 16 segment
cmd2=0x40 ;
Dat_flag=1;//
cmd3=0xc0 ;//start addr 00h
cmd4=0x8a ;//
while(1) //關(guān)掉會(huì)全亮度power off無效
{
Dat_flag=0;//
  PT6312_Write (cmd2);//CMD2 每字需變更位址 48 test mode work but only one word [no work 4c..44]
Dat_flag=1;//
  PT6312_Write (cmd3);//CMD3 start address0x01 改變起始位址家1 [no work c1..c3]
//  Dat_flag=1;//
  for (i=0;i<12;i++)
{

  adr=TempData[ i];
  PT6312_Write (adr);
  }
//-------
  STB_SET;
      CLK_SET;//5 pulse time delay
      CLK_SET;//5 pulse time delay
         CLK_SET;//5 pulse time delay
         CLK_SET;//5 pulse time delay
               CLK_SET;//5 pulse time delay
//--------
Dat_flag=0;//
PT6312_Write (cmd1);//CMD1 6dig 16segment [no work02..01]
PT6312_Write (cmd4);//CMD4 6/16 pulse width dim control  8a..83 work
}
}

作者: 高級(jí)放牛娃 時(shí)間: 2020-5-29 09:48
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