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[導讀]雙十一，大神L單點亮看淘寶一直給我發優惠券，教何就買了一片OLED，片機0.96寸的大神L單點亮，最后花費了4.54元……

出品?21ic論壇?gaoyang9992006

網站：21ic.com

大神教你如何用ML51單片機點亮

雙十一，教何看淘寶一直給我發優惠券，片機就買了一片OLED，大神L單點亮0.96寸的教何，最后花費了4.54元。片機

驅動芯片是大神L單點亮SSD1315

第一，驅動不一樣，教何老款是片機SSD1306，新款的大神L單點亮是SSD1315，新款沒有并口功能，教何但是片機模塊是IIC，不影響，程序一樣，電路一樣。

第二，新款玻璃比老款的小了一圈，沒用的玻璃邊減去了，省點OLED玻璃，因為玻璃都是日本進口，玻璃省了，價格要便宜一點。

第三，引腳順序不一樣，老款依次是VCC、GND、SCL、SDA，新款則是GND、VCC、SCL、SDA。

所以我為了圖便宜，買了新款的。只有4個管腳。

第一步，點亮屏幕：

得到一塊新的屏幕，最重要的就是看能否點亮，點亮了才能使用做各種顯示應用。而這個店家沒有提供驅動代碼，懶得自己寫啊，這種通用的肯定有，I2C很容易GPIO模擬，然后搜其他店家，有不少提供驅動代碼的，下載了移植到我的ML51開發板上試試。下面鏈接是廠家提供的驅動程序。

鏈接: https://pan.baidu.com/s/1jqHcX9fIyKdUirFoZ3qSCA 提取碼: mj6e 復制這段內容后打開百度網盤手機App，操作更方便哦為方便下載，提供其中源碼與取模軟件的本地下載，資料說明看不看無所謂。

考慮到是I2C接口，如果用GPIO模擬，需要先設置為開漏模式，然后找到初始化代碼，增加配置開漏模式的四行代碼。

//對選用的管腳設置為開漏模式MFP_P20_GPIO;MFP_P21_GPIO;P20_OPENDRAIN_MODE;P21_OPENDRAIN_MODE;

這里也可以看出我用的是P20與P21.

然后修改頭文件中的管腳定義

sbit OLED_SCL=P2^0;//SCLsbit OLED_SDA=P2^1;//SDAsbit OLED_RES =P2^2;//RES

因為使用I2C,按照手冊說明可以忽略RES。但是為了少修改一點內容，就先這么隨意指定個管腳，不鏈接就是了。

通過取模軟件，可以取出你想要的漢字，放入如下數組。

unsigned char code Hzk[][32]={ { 0x00,0x00,0xE0,0x40,0x40,0x40,0x40,0xFC,0x40,0x40,0x40,0x40,0x60,0xE0,0x00,0x00,0x00,0x00,0x07,0x02,0x02,0x02,0x02,0x7F,0x02,0x02,0x02,0x02,0x02,0x07,0x00,0x00},/*"中",0*/{ 0x00,0x00,0xF8,0x08,0x08,0x28,0x28,0x28,0xE8,0x28,0x28,0x38,0x28,0xF8,0x08,0x00,0x00,0x00,0x7F,0x20,0x20,0x29,0x29,0x29,0x2F,0x29,0x2F,0x2D,0x28,0x7F,0x00,0x00},/*"國",1*/{ 0x00,0x00,0x00,0xF0,0x20,0x20,0x20,0xFC,0x20,0x20,0x20,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0x05,0x05,0x05,0x7F,0x45,0x45,0x45,0x4F,0x40,0x60,0x78,0x60},/*"電",2*/{ 0x00,0x00,0x10,0x10,0x10,0x10,0x10,0xD0,0x30,0x30,0x10,0x08,0x80,0x80,0x00,0x00,0x01,0x01,0x01,0x01,0x21,0x21,0x41,0x7F,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x00},/*"子",3*/{ 0x00,0x00,0xF8,0x10,0x50,0x90,0x90,0x70,0x70,0x90,0xD0,0x70,0x30,0xF8,0x00,0x00,0x00,0x00,0x7F,0x00,0x08,0x06,0x01,0x1E,0x08,0x06,0x03,0x4E,0x40,0x7F,0x00,0x00},/*"網",4*/};

主程序代碼如下所示

//#include "ML51.h" #include "oled.h"#include "bmp.h"int main(void){  unsigned char t=' ';OLED_Init();//初始化OLEDOLED_ColorTurn(0);//0正常顯示，1 反色顯示OLED_DisplayTurn(0);//0正常顯示 1 屏幕翻轉顯示while(1){  // OLED_DrawBMP(0,0,128,64,BMP1);// delay_ms(5);// OLED_Clear();// OLED_ShowChinese(0,0,0,16);OLED_ShowChinese(18,0,0,16);//中OLED_ShowChinese(36,0,1,16);//國OLED_ShowChinese(54,0,2,16);//電OLED_ShowChinese(72,0,3,16);//子OLED_ShowChinese(90,0,4,16);//網// OLED_ShowChinese(108,0,6,16);OLED_ShowString(8,2,"bbs.21ic.com",16);OLED_ShowString(20,4,"2020/11/17",16);OLED_ShowString(0,6,"ASCII:",16); OLED_ShowString(63,6,"CODE:",16);OLED_ShowChar(48,6,t,16);t++;if(t>'~')t=' ';OLED_ShowNum(103,6,t,3,16);// delay_ms(5);// OLED_Clear();} }

接下來連接OLED的I2C接口與開發板，并使用開發板供電。

燒錄后，效果如下圖所示。然后就可以利用這個框架只需要修改簡單的幾個地方，就能實現OLED點亮了，可以用于其他的各種項目了。

最后獻上我修改后的工程。

后面我再試試改成用硬件I2C收發器控制。

以上完成第一步點亮屏幕。

第二步，應用到自己的項目中：

如果需要顯示溫濕度的話，就可以利用這些函數組合出你要顯示的內容，例如顯示“溫度：36.5℃”。

則需要先生成所需的漢字與符號字模。

unsigned char code Hzk[][32]={ { 0x00,0x00,0xE0,0x40,0x40,0x40,0x40,0xFC,0x40,0x40,0x40,0x40,0x60,0xE0,0x00,0x00,0x00,0x00,0x07,0x02,0x02,0x02,0x02,0x7F,0x02,0x02,0x02,0x02,0x02,0x07,0x00,0x00},/*"中",0*/{ 0x00,0x00,0xF8,0x08,0x08,0x28,0x28,0x28,0xE8,0x28,0x28,0x38,0x28,0xF8,0x08,0x00,0x00,0x00,0x7F,0x20,0x20,0x29,0x29,0x29,0x2F,0x29,0x2F,0x2D,0x28,0x7F,0x00,0x00},/*"國",1*/{ 0x00,0x00,0x00,0xF0,0x20,0x20,0x20,0xFC,0x20,0x20,0x20,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0x05,0x05,0x05,0x7F,0x45,0x45,0x45,0x4F,0x40,0x60,0x78,0x60},/*"電",2*/{ 0x00,0x00,0x10,0x10,0x10,0x10,0x10,0xD0,0x30,0x30,0x10,0x08,0x80,0x80,0x00,0x00,0x01,0x01,0x01,0x01,0x21,0x21,0x41,0x7F,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x00},/*"子",3*/{ 0x00,0x00,0xF8,0x10,0x50,0x90,0x90,0x70,0x70,0x90,0xD0,0x70,0x30,0xF8,0x00,0x00,0x00,0x00,0x7F,0x00,0x08,0x06,0x01,0x1E,0x08,0x06,0x03,0x4E,0x40,0x7F,0x00,0x00},/*"網",4*/{ 0x00,0x80,0x80,0xC8,0x30,0x00,0x80,0x40,0x30,0x18,0x10,0x60,0xC0,0x80,0x80,0x80,0x00,0x00,0x00,0x3F,0x12,0x09,0x04,0x7F,0x44,0x44,0x42,0x43,0x42,0x78,0x60,0x00},/*"論",5*/{ 0x40,0x40,0x40,0xF8,0x40,0x60,0xC0,0x90,0x90,0x90,0x90,0x90,0x90,0x98,0xD0,0x80,0x00,0x10,0x10,0x1F,0x08,0x08,0x60,0x30,0x2C,0x27,0x23,0x25,0x28,0x30,0x60,0x00},/*"壇",6*/{ 0x00,0x00,0x00,0x18,0xF8,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x1B,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"！",7*/{ 0x00,0x40,0xC0,0x18,0x90,0x60,0xF8,0xA8,0xA8,0xA8,0xA8,0xA8,0xF8,0x08,0x00,0x00,0x00,0x04,0x7C,0x7E,0x01,0x00,0x21,0x3E,0x22,0x3E,0x22,0x3E,0x23,0x3E,0x22,0x20},/*"溫",8*/{ 0x00,0x00,0x00,0xF0,0x90,0x90,0x90,0xF4,0x98,0x90,0x90,0xF0,0x90,0xD8,0x90,0x00,0x00,0x40,0x30,0x0F,0x40,0x44,0x44,0x4F,0x35,0x25,0x35,0x6F,0x64,0x40,0x40,0x00},/*"度",9*/
{ 0x00,0x40,0xC0,0x98,0x60,0x00,0xF8,0xA8,0xA8,0xA8,0xA8,0xA8,0xA8,0xF8,0x08,0x00,0x04,0x04,0x7E,0x01,0x20,0x24,0x3D,0x20,0x3F,0x20,0x20,0x3F,0x24,0x27,0x33,0x20},/*"濕",10*/{ 0x00,0x00,0x00,0xF0,0x90,0x90,0x90,0xF4,0x98,0x90,0x90,0xF0,0x90,0xD8,0x90,0x00,0x00,0x40,0x30,0x0F,0x40,0x44,0x44,0x4F,0x35,0x25,0x35,0x6F,0x64,0x40,0x40,0x00},/*"度",11*/
{ 0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x11,0x19,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*"：",12*/{ 0x00,0x00,0x78,0x48,0x78,0xC0,0xE0,0x10,0x08,0x08,0x08,0x08,0x10,0x38,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x0F,0x08,0x10,0x10,0x10,0x10,0x08,0x08,0x04,0x00},/*"℃",13*/ 
};

最后顯示的效果如下圖所示，如果將溫度的數字通過讀取傳感器繼續更新，就可以看到實時的溫度了。

然后合理的利OLED廠家提供的庫函數組合。

//#include "ML51.h" #include "oled.h"#include "bmp.h"
int main(void){  char i=0;unsigned char t=' ';OLED_Init();//初始化OLEDOLED_ColorTurn(0);//0正常顯示，1 反色顯示OLED_DisplayTurn(0);//0正常顯示 1 屏幕翻轉顯示while(1){  

//第一行顯示8個字符16*8==128for(i=0;i<8;i++)OLED_ShowChinese(i*16,0,i,16);//第二行顯示 溫度：OLED_ShowChinese(0,2,8,16);//溫OLED_ShowChinese(16,2,9,16);//度OLED_ShowChinese(32,2,12,16);//：//在第二行，第四個字符位置顯示36OLED_ShowNum(48,2,36,2,16);OLED_ShowChar(66,2,'.',16);OLED_ShowNum(74,2,5,1,16);OLED_ShowChinese(90,2,13,16);//℃//在第三行顯示字符串OLED_ShowString(8,4,"bbs.21ic.com",16);//delay_ms(5);} }