查看“The Use of OLED”的源代码

{{Language| The Use of OLED }}
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==Objective==
To know Microduino-OlED and learn how to use libraries to drive the OLED screen. 

==Equipment==
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|Module||Number||Function
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|[[Microduino-CoreUSB]]||1||Core board 
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|[[Microduino-OLED]]||1||OLED display screen 
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 [[File:ble_OLED.jpg|600px|center]]

==Program==
Program download: [https://github.com/Microduino/Microduino_Tutorials/tree/master/Microduino_Advanced/Microduino_OLED Microduino_OLED]

==Experiment One==
*Display characters including specified and data changed characters.
Open OLED_Text test program, select the right board(CoreUSB) and download via the serial port.
Result: 
*The specified character "*_*Microduino*_*" is displayed on the first line;
* The specified character "Time："is displayed on the second line;
*The third shows mills() function. Here we adopt millisecond as the time unit and keep two decimal fractions.  
*Grammar: 
**u8g.setFont(XXX) function is used for setting font. If there is no default font, you have to define one. 
**u8g.setPrintPos(X,Y) is used for specified coordinate. "X" means horizontal coordinate and "Y" means vertical coordinate. The Y values on the top line cannot be "0" and must bigger than the height of the display font; 
**u8g.print(XXX) is for displaying characters. Static characters have to be noted with””and the changed data needn't;  
**u8g.drawStr(X, Y,XXX) can be used for displaying specified characters and can't be adopted for displaying changed data; 
**u8g.setRot180() is for font rotation. You can change the rotation angle from 180 to 90 or 270. The default is 0.
**If you want to change the font or coordinate, you need to re-add font or coordinate functions before the displayed functions. 
**Changing font can refer to the file u8g.h under U8glib\utility. 

[[File:OLED_TEXT.jpg|600px|center|Microduino-OLED]]

==Experiment Two==
*Drawing picture
Open OLED_Paint test program. (A straight line, a solid round, round, rectangular hollow, hollow rectangular or a rectangular angle as well as apex angle bending rectangular can be achieved here.) We adopt system timing to simulate the second pointer of the pointer meter. 
*Grammar:　
**u8g.drawLine(X,Y,M,N) is used for drawing straight line;
***X：Starting horizontal coordinate.  Y：Starting vertical coordinate.  M：End vertical coordinate. 
**u8g.drawDisc(X,Y,D) is used for drawing solid round. 
***X：Horizontal coordinate. Y: Vertical coordinate. D: Diameter. 
**u8g.drawCircle(X,Y,D) is for drawing hollow round;
*** X：Horizontal coordinate. Y: Vertical coordinate. D: Diameter.
**u8g.drawFrame(X,Y,I,W) is for drawing hollow rectangular; 
*** X：Horizontal coordinate. Y: Vertical coordinate. D: Diameter. L: Length. W: Width. 
**u8g.drawBox(X,Y,I,W) is for drawing solid rectangular; 
*** X：Horizontal coordinate. Y: Vertical coordinate. D: Diameter. L: Length. W: Width.
**u8g.drawRFrame(X,Y,I,W,B) is for drawing apex angle bending rectangular; 
*** X：Horizontal coordinate. Y: Vertical coordinate. D: Diameter. L: Length. W: Width.
[[File: OLED_Paint.jpg|800px|thumb|center|Microduino-OLED]]

==Experiment Three==

*Display of Chinese characters, pictures and dynamic text: 

**Character display can be printed by calling the library and the pictures and Chinese characters have to be printed out by modulus operation  

Modulus operation will need the Windows: '''[[File:PCtolCD.zip]]'''

*Take Chinese character as an example: 

**Make Chinese character modulus code: 
Step1: Open modulus software and choose character mode:
 [[File:set_1.jpg|800px|center|Microduino-OLED]]
Step 2: Set 32*32 font; 
[[File:set_2.jpg|800px|center|Microduino-OLED]]
Step 3: Enter Chinese character and you can select font; 
[[File:set_3.jpg|800px|center|Microduino-OLED]]
Step 4: Set modulus format; 
[[File:set_4.jpg|800px|center|Microduino-OLED]]
[[File:set_5.jpg|800px|center|Microduino-OLED]]
Step 5: Generate code after setting. 
[[File:set_6.jpg|800px|center|Microduino-OLED]]
Step6: Change the original Chinese character code to the generated code. 
Grammar: 
*u8g.drawXBMP( X, Y, I, W, XXXX);
** X：Horizontal coordinate. Y: Vertical coordinate. D: Diameter. L: Length. W: Width. XXXX: Array name of Chinese character code.   

[[File: OLED_Writing.jpg|800px|thumb|center|Microduino-OLED]]
==Video==

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