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请问stc单片机15的硬件SPI可以驱动oled吗，oled用spi方式

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ID:710551 发表于 2020-8-23 10:00 | 只看该作者 |只看大图 回帖奖励 |倒序浏览 |阅读模式
试了好多次，都不亮
用软件模拟spi可以，硬件spi不亮。没找到原因。

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沙发
ID:804115 发表于 2020-8-23 19:26 | 只看该作者
用逻辑分析仪抓spi的四根线电平，对比好的和不好的，瞬间找到问题。
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板凳
ID:123289 发表于 2020-8-25 17:18 | 只看该作者
学会查手册吧，SPI的口输入电压电流的极限是多少？你的OLED要求是多少？不就有答案了吗。
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地板
ID:155507 发表于 2020-8-25 22:48 | 只看该作者
需要你仔细看器件的SPI时序图


我给你来个程序试试

  2. #include <stc15.h>      //本例程为SSD1329驱动芯片的96x96OLED屏

  4. sbit RSDC=P1^0;         //即D/C  0是command  1是data
  5. sbit CS=P1^1;          //片选        低有效

  7. struct hanzi                                 // 汉字字模数据结构
  8. {
  9.         unsigned char index[2];         // 汉字内码索引
  10.         unsigned char msk[32];         // 点阵码数据
  11. };
  12. struct hanzi code hz[]=
  13. {
  14.         "床", 0x01,0x00,0x00,0x84,0x3F,0xFE,0x20,0x80,
  15.         0x20,0x80,0x20,0x88,0x3F,0xFC,0x20,0x80,
  16.         0x21,0xC0,0x21,0xA0,0x22,0x90,0x24,0x88,
  17.         0x48,0x8E,0x50,0x84,0x80,0x80,0x00,0x80,

  19.         "前", 0x10,0x10,0x0C,0x30,0x04,0x44,0xFF,0xFE,
  20.         0x00,0x00,0x3E,0x08,0x22,0x48,0x22,0x48,
  21.         0x3E,0x48,0x22,0x48,0x22,0x48,0x3E,0x48,
  22.         0x22,0x08,0x22,0x08,0x2A,0x28,0x24,0x10,

  24.         "明", 0x00,0x04,0x04,0xFE,0x7E,0x84,0x44,0x84,
  25.         0x44,0x84,0x44,0xFC,0x7C,0x84,0x44,0x84,
  26.         0x44,0x84,0x44,0xFC,0x7C,0x84,0x44,0x84,
  27.         0x01,0x04,0x01,0x04,0x02,0x14,0x04,0x08,

  29.         "月", 0x00,0x10,0x0F,0xF8,0x08,0x10,0x08,0x10,
  30.         0x08,0x10,0x0F,0xF0,0x08,0x10,0x08,0x10,
  31.         0x08,0x10,0x0F,0xF0,0x08,0x10,0x08,0x10,
  32.         0x10,0x10,0x10,0x10,0x20,0x50,0x40,0x20,

  34.         "光", 0x01,0x00,0x21,0x08,0x11,0x0C,0x09,0x10,
  35.         0x09,0x20,0x01,0x04,0xFF,0xFE,0x04,0x40,
  36.         0x04,0x40,0x04,0x40,0x04,0x40,0x08,0x40,
  37.         0x08,0x42,0x10,0x42,0x20,0x3E,0x40,0x00,

  39.         "疑", 0x20,0x00,0x26,0xFC,0x38,0x08,0x22,0x50,
  40.         0x1E,0x20,0x21,0xFE,0x3E,0x22,0x48,0x24,
  41.         0x08,0xA0,0xFE,0xB8,0x08,0xA0,0x08,0xA0,
  42.         0x14,0xE0,0x22,0xA0,0x41,0x1E,0x02,0x04,

  44.         "是", 0x0F,0xE0,0x08,0x20,0x08,0x20,0x0F,0xE0,
  45.         0x08,0x20,0x08,0x20,0x0F,0xE0,0x00,0x04,
  46.         0xFF,0xFE,0x01,0x00,0x09,0x20,0x09,0xF0,
  47.         0x09,0x00,0x15,0x00,0x23,0x06,0x40,0xFC,

  49.         "地", 0x00,0x40,0x20,0x40,0x22,0x40,0x22,0x40,
  50.         0x22,0x48,0x22,0x7C,0xFB,0xC8,0x26,0x48,
  51.         0x22,0x48,0x22,0x48,0x22,0x68,0x22,0x50,
  52.         0x3A,0x42,0xE2,0x02,0x41,0xFE,0x00,0x00,

  54.         "上", 0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,
  55.         0x01,0x10,0x01,0xF8,0x01,0x00,0x01,0x00,
  56.         0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,
  57.         0x01,0x00,0x01,0x04,0xFF,0xFE,0x00,0x00,

  59.         "霜", 0x1F,0xF0,0x01,0x00,0x7F,0xFE,0x41,0x02,
  60.         0x9D,0x74,0x01,0x00,0x1D,0x70,0x08,0x04,
  61.         0x08,0xFE,0x7E,0x84,0x08,0xFC,0x1C,0x84,
  62.         0x2A,0xFC,0x48,0x84,0x08,0xFC,0x08,0x84,

  64.         "举", 0x22,0x08,0x19,0x18,0x09,0x20,0x00,0x44,
  65.         0xFF,0xFE,0x04,0x40,0x09,0x20,0x11,0x10,
  66.         0x2F,0xEE,0xC1,0x04,0x01,0x10,0x3F,0xF8,
  67.         0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,

  69.         "头", 0x00,0x80,0x00,0x80,0x08,0x80,0x06,0x80,
  70.         0x22,0x80,0x18,0x80,0x08,0x80,0x00,0x84,
  71.         0xFF,0xFE,0x00,0x80,0x01,0x00,0x01,0x60,
  72.         0x02,0x10,0x04,0x08,0x18,0x0C,0x60,0x04,

  74.         "望", 0x10,0x04,0x0A,0x7E,0xFF,0x44,0x20,0x7C,
  75.         0x20,0x44,0x26,0x7C,0x38,0x44,0x20,0x8C,
  76.         0x00,0x00,0x3F,0xF8,0x01,0x00,0x1F,0xF0,
  77.         0x01,0x00,0x01,0x04,0xFF,0xFE,0x00,0x00,

  79.         "低", 0x10,0x08,0x10,0x3C,0x17,0xC0,0x24,0x40,
  80.         0x24,0x40,0x64,0x40,0xA4,0x44,0x27,0xFE,
  81.         0x24,0x20,0x24,0x20,0x24,0x20,0x24,0x90,
  82.         0x25,0x12,0x26,0x4A,0x24,0x2A,0x20,0x04,

  84.         "思", 0x00,0x08,0x3F,0xFC,0x21,0x08,0x21,0x08,
  85.         0x21,0x08,0x3F,0xF8,0x21,0x08,0x21,0x08,
  86.         0x21,0x08,0x3F,0xF8,0x20,0x08,0x02,0x00,
  87.         0x51,0x88,0x50,0x96,0x90,0x12,0x0F,0xF0,

  89.         "故", 0x10,0x40,0x10,0x40,0x10,0x40,0x14,0x44,
  90.         0xFE,0xFE,0x11,0x08,0x12,0x88,0x10,0x88,
  91.         0x7C,0x88,0x44,0x88,0x44,0x50,0x44,0x20,
  92.         0x44,0x20,0x7C,0x50,0x44,0x8E,0x03,0x04,

  94.         "乡", 0x02,0x00,0x02,0x00,0x04,0x20,0x08,0x20,
  95.         0x10,0x40,0x3F,0x80,0x01,0x00,0x02,0x08,
  96.         0x04,0x08,0x3F,0xF0,0x00,0x20,0x00,0x40,
  97.         0x00,0x80,0x03,0x00,0x0C,0x00,0x70,0x00,

  99.         "静", 0x08,0x40,0x08,0x40,0x7E,0xF8,0x09,0x10,
  100.         0x3E,0x24,0x08,0xFE,0xFF,0x24,0x00,0x24,
  101.         0x3F,0xFE,0x22,0x24,0x3E,0x24,0x22,0xFC,
  102.         0x3E,0x24,0x22,0x20,0x22,0xA0,0x26,0x40,

  104.         "夜", 0x02,0x00,0x01,0x04,0xFF,0xFE,0x08,0x80,
  105.         0x08,0x80,0x10,0xF8,0x11,0x08,0x32,0x88,
  106.         0x56,0x50,0x99,0x10,0x10,0xA0,0x10,0x40,
  107.         0x10,0xA0,0x11,0x10,0x12,0x0E,0x1C,0x04,

  109.         "唐", 0x01,0x00,0x00,0x88,0x3F,0xFC,0x20,0x80,
  110.         0x2F,0xF8,0x20,0x88,0x3F,0xFE,0x20,0x88,
  111.         0x2F,0xF8,0x20,0x80,0x2F,0xF8,0x28,0x08,
  112.         0x48,0x08,0x48,0x08,0x8F,0xF8,0x08,0x08,

  114.         "李", 0x01,0x00,0x01,0x08,0x7F,0xFC,0x01,0x00,
  115.         0x05,0x40,0x09,0x30,0x31,0x0E,0xC1,0x04,
  116.         0x0F,0xE0,0x00,0x40,0x01,0x88,0x7F,0xFC,
  117.         0x01,0x00,0x01,0x00,0x05,0x00,0x02,0x00,

  119.         "白", 0x02,0x00,0x04,0x00,0x08,0x08,0x3F,0xFC,
  120.         0x20,0x08,0x20,0x08,0x20,0x08,0x20,0x08,
  121.         0x3F,0xF8,0x20,0x08,0x20,0x08,0x20,0x08,
  122.         0x20,0x08,0x3F,0xF8,0x20,0x08,0x00,0x00,

  124.         "。", 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  125.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  126.         0x00,0x00,0x00,0x00,0x3C,0x00,0x66,0x00,
  127.         0x66,0x00,0x66,0x00,0x3C,0x00,0x00,0x00,

  129.         "，", 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  130.         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  131.         0x0C,0x00,0x1E,0x00,0x1E,0x00,0x0C,0x00,
  132.         0x04,0x00,0x08,0x00,0x10,0x00,0x00,0x00
  133. };


  136. void init_oled();                                                  //屏初始化，各种datasheet的设置，官方参考数据
  137. void WriteComm(unsigned char com);                  //单片机写命令
  138. void WriteData(unsigned char dat);                  //单片机写数据
  139. void init_SPI();                                    //单片机SPI初始化
  140. void Delayms(unsigned int t);
  141. void sawhz(unsigned char x,unsigned char y,unsigned char c[2]);                  //设置起止坐标并写汉字数据
  142. void clear();                                       //清屏
  143. void write(unsigned dat);                           //最终写data函数，最高亮度，由4bit变1bit
  144. //因为本驱动是一个Byte的其中4位控制一个led像素点，共16种灰度模式，1111为亮  0000为熄灭
  145. //比如一个字节的低四位是D0像素，高四位是D1像素，依次类推
  146. //void writehz(unsigned char c[2]);

  148. unsigned char m;
  149. unsigned int i;

  151. void main()
  152. {
  153.         P0M0 = 0x00;
  154.         P0M1 = 0x00;
  155.         P1M0 = 0x00;
  156.         P1M1 = 0x00;
  157.         P2M0 = 0x00;
  158.         P2M1 = 0x00;
  159.         P3M0 = 0x00;
  160.         P3M1 = 0x00;
  161.         P4M0 = 0x00;
  162.         P4M1 = 0x00;
  163.         P5M0 = 0x00;
  164.         P5M1 = 0x00;
  165.         P6M0 = 0x00;
  166.         P6M1 = 0x00;
  167.         P7M0 = 0x00;
  168.         P7M1 = 0x00;                                //全设置为准双向口


  171.         init_SPI();
  172.         init_oled();

  174.         clear();

  176.         sawhz(12,0,"静");
  177.         sawhz(20,0,"夜");
  178.         sawhz(28,0,"思");
  179.         sawhz(8,16,"唐");
  180.         sawhz(20,16,"李");
  181.         sawhz(28,16,"白");
  182.         sawhz(0,32,"床");
  183.         sawhz(8,32,"前");
  184.         sawhz(16,32,"明");
  185.         sawhz(24,32,"月");
  186.         sawhz(32,32,"光");
  187.         sawhz(40,32,"，");
  188.         sawhz(0,48,"疑");
  189.         sawhz(8,48,"是");
  190.         sawhz(16,48,"地");
  191.         sawhz(24,48,"上");
  192.         sawhz(32,48,"霜");
  193.         sawhz(40,48,"。");
  194.         sawhz(0,64,"举");
  195.         sawhz(8,64,"头");
  196.         sawhz(16,64,"望");
  197.         sawhz(24,64,"明");
  198.         sawhz(32,64,"月");
  199.         sawhz(40,64,"，");
  200.         sawhz(0,80,"低");
  201.         sawhz(8,80,"头");
  202.         sawhz(16,80,"思");
  203.         sawhz(24,80,"故");
  204.         sawhz(32,80,"乡");
  205.         sawhz(40,80,"。");


  208.         while(1);
  209. }

  211. void clear()                //清屏
  212. {
  213.         for(i=4608;i>0;i--)
  214.         WriteData(0x00);
  215. }
  216. /*
  217. void writehz(unsigned char c[2])
  218. {
  219.                 unsigned char i,k;
  220.                 for(k=0;k<23;k++)                           //23 代表字库中的个数  轮询方式查询
  221.                 {
  222.                                 if((hz[k].index[0]==c[0])&&(hz[k].index[1]==c[1]))                         //数据结构查询
  223.                                 {
  224.                                                 for(i=0;i<32;i++)
  225.                                                                 write(hz[k].msk);
  226.                                 }

  228.                 }
  229. }
  230. */
  231. void sawhz(unsigned char x,unsigned char y,unsigned char c[2])                         //setxy and writehz  头字母saw  设置起止坐标并写汉字
  232. {
  233.         unsigned char i,k;
  234.         WriteComm(0x15);//SET COLUMN ADDR
  235.         WriteComm(0x10+x);//第 16+x 列开始                 即本屏幕的第一列
  236.         WriteComm(0x10+x+7);  //第16+x+3列结束  
  237.         WriteComm(0x75);//SET ROW ADDR
  238.         WriteComm(0x00+y);//第 0+y 行开始
  239.         WriteComm(0x00+y+15);//第0+y+15行结束   共16行

  241.         for(k=0;k<25;k++)
  242.         {
  243.                 if((hz[k].index[0]==c[0])&&(hz[k].index[1]==c[1]))
  244.                 {
  245.                         for(i=0;i<32;i++)
  246.                         write(hz[k].msk);
  247.                 }
  248.         }        
  249. }


  252. void Delayms(unsigned int t)         //stc15@11.0592   1ms延时

  254. {
  255.         unsigned int a,b;
  256.         for(a=t;a>0;a--)
  257.         for(b=850;b>0;b--);
  258. }



  262. void WriteComm(unsigned char com)                   //单片机写命令SPI函数
  263. {
  264.         RSDC=0;
  265.         SPSTAT=0xc0;                //SPIstat clear        
  266.         SPDAT=com;                  //upper eight bits
  267.         while((SPSTAT&0x80)==0);    //wait for transfer finished
  268.         SPSTAT=0xc0;                //SPIstat clear
  269.         RSDC=1;        
  270. }


  273. void WriteData(unsigned char dat)                   //单片机写data，SPI函数
  274. {
  275.         RSDC=1;
  276.         SPSTAT=0xc0;                //SPIstat clear        
  277.         SPDAT=dat;                  //upper eight bits
  278.         while((SPSTAT&0x80)==0);    //wait for transfer finished        
  279.         SPSTAT=0xc0;                //SPIstat clear
  280.         RSDC=0;
  281. }

  283. void write(unsigned dat)                         //最终写data函数，最高亮度，由4bit变1bit
  284. {
  285.         unsigned char n;
  286.         for(n=0;n<4;n++)
  287.         {        
  288.                 if((dat&0xc0)==0xc0)           //与1100 0000与，留高两位
  289.                 WriteData(0xff);
  290.                 else if((dat&0xc0)==0x80)
  291.                 WriteData(0xf0);
  292.                 else if((dat&0xc0)==0x40)
  293.                 WriteData(0x0f);
  294.                 else
  295.                 WriteData(0x00);
  296.                 dat<<=2;
  297.         }
  298. }

  300. void init_SPI()
  301. {
  302.         SPDAT=0;        
  303.         SPSTAT=0xc0;           //SPIstat clear
  304.         SPCTL=0xdc;            //master         dc高到低   f8低到高   SSIG=1 SPEN=1 MSTR =1 CPOL=1 CPHA=1                     
  305. }

  307. void init_oled()
  308. {
  309.         CS=0;
  310.         Delayms(25);
  311.         WriteComm(0x15);//SET COLUMN ADDR
  312.         WriteComm(0x10);//第16列开始
  313.         WriteComm(0x3f);  //第63列结束  共（63-16+1)*2=96列
  314.         WriteComm(0x75);//SET ROW ADDR
  315.         WriteComm(0x00);//第0行开始
  316.         WriteComm(0x5f);//第95行结束   共96行  

  318.         WriteComm(0xA0);//SET RE-MAP
  319.         WriteComm(0x51);
  320.         WriteComm(0xA1);//SET DISPLAY START LINE
  321.         WriteComm(0x00);
  322.         WriteComm(0xA2);//SET DISPLAY OFFSET
  323.         WriteComm(0x60);
  324.         WriteComm(0xA4);//SET DISPLAY MODE
  325.         WriteComm(0xA8);//SET MUX RADIO
  326.         WriteComm(0x5F);
  327.         WriteComm(0xB2);//SET FRAME FREQUENCY
  328.         WriteComm(0x23);
  329.         WriteComm(0xB3);//SET FRONT CLOCK DIVIDER & OSCILLATOR FREQUENCY
  330.         WriteComm(0xF0);

  332.         WriteComm(0x81);//SET CONTRAST CURRENT
  333.         WriteComm(0x7F);//
  334.         WriteComm(0xBC);    //first pre_charge voltage
  335.         WriteComm(0x1F);
  336.         Delayms(10);
  337.         WriteComm(0x82);   //second pre_charge speed
  338.         WriteComm(0xFE);
  339.         Delayms(10);
  340.         WriteComm(0xB1);   //first pre_charge phase length
  341.         WriteComm(0x21);

  343.         WriteComm(0xBB);//SET SECONDE PRE_CHARGE PERIOD
  344.         WriteComm(0x0F);

  346.         WriteComm(0xbe);//SET VCOMH
  347.         WriteComm(0x1F);

  349.         WriteComm(0xB8);        //SET GS
  350.         WriteComm(0x04); //GS1
  351.         WriteComm(0x06); //GS2
  352.         WriteComm(0x08); //GS3        
  353.         WriteComm(0x0A); //GS4
  354.         WriteComm(0x0C); //GS5  
  355.         WriteComm(0x0E); //GS6      
  356.         WriteComm(0x10); //GS7
  357.         WriteComm(0x12); //GS8
  358.         WriteComm(0x14); //GS9  
  359.         WriteComm(0x16); //GS10
  360.         WriteComm(0x18); //GS11
  361.         WriteComm(0x1A); //GS12
  362.         WriteComm(0x1C); //GS13
  363.         WriteComm(0x1E); //GS14
  364.         WriteComm(0x20); //GS15
  365.         Delayms(10);

  367.         WriteComm(0xAF);         //DSPLAY ON
  368. }

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