原创 STM32F1 with 1.5inch CSTN Color LCD

2013-8-23 10:14 923 0 4 分类: MCU/ 嵌入式 文集: DIY

First of all, happy new year and happy Valentine's day!

Life has been very busy over the past few months... My first post is now released!

Acknowledgement:
http://www.powermcu.com - for STM32 RTC Library

Some time ago, I bought two 1.5" CSTN Color LCD panels from Taobao.
To my surprise, the price for each of them was only RMB$7.5!

sany0060_800x599.jpg
Fig.1 The 1.5" CSTN Color LCD
The resolution of the LCD is 128x128.
The controller used in it belongs to Samsung's S6B33B6 family.
Each pixel supports displaying in 16-bit color (R5G6B5) or in 12-bit (R4G4B4) color.
The nominal voltage for the LED backlight is 6.4V.
The panel supports 8-bit or 16-bit parallel bus, 3-Pin or 4-Pin SPI. It is suitable for any microcontrollers.
 
I got the datasheet from the vendor. I have printed it out to assist the writing of the LCD driver.
sany0061 (2)_800x599.jpg
Fig.2 Datasheet of the controller
 
Using a in-house made STM32 evaluation board and also a in-house made DC-DC converter to generate 6.4V for LED backlight from 5V, the hardware parts and connections are done.
 
sany0065_800x599.jpg
Fig.3 An in-house made STM32 eval. board with RTC backup battery
 
sany0069_800x599.jpgsany0070_800x599.jpg
Fig. 4&5 In-house made DC-DC supply (using LM2577)
 
The LCD panel is fixed on a PCB and some soldering works are done.
sany0073_800x599.jpg
Fig. 6 The LCD panel fixed on a PCB to form a LCD module (LCM)
 
sany0075_800x599.jpg
Fig. 7 Back view of the LCM
 
sany0076_800x599.jpg
Fig. 8 The hardware part is done
 
The LCD driver program has been written, it mainly consists of:
1. LCDS_Init(void) - init the LCD panel
2. LCDS_DrawPixel(x,y,color) - set the pixel (x,y) to color
3. LCDS_DrawLine(x0,y0,x1,y1,color) - draw a line (x0,y0) to (x1,y1) to color
4. LCDS_DrawRect(x0,y0,x1,y1,color,style) - draw a rectangle in color with style (solid border/filled)
5. LCDS_DrawChar(x,y,ch,color) - draw a character with fonts.h (written by ST) at position (x,y)
6. LCDS_DispChar(line,char_pos,ch,color) - display a character at line (0-7), char_pos(0-15)
7. LCDS_DispString(line,start_pos,string,foreColor,backColor) - display a series of string
 
0002-1138x659_800x463.jpg
Fig. 9 Using Keil uVision 4 as the IDE
 
0003-1138x659_800x463.jpg
Fig. 10 Developing the LCD driver library
 
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Fig. 11 Debug information is displayed though Hyper Terminal with UART
 
With the RTC library, the time is display on the LCM at an interval of 1s (by RTC interrupt).
 
sany0093_800x599.jpg
Fig. 12 RTC Date and Time shown on LCM
 
sany0081_800x599.jpg
Fig. 13 Overall view

Attached are the full project source code and the datasheet of the LCD controller S6B33B6.
Special notes:
Libraries not written by MarioTech belong to their original owners.
Libraries written by MarioTech is released under GPL license.

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文章评论 4条评论)

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feezai_817228858 2014-7-1 21:03

非常不错的。感谢分享。

mariohk321_586285434 2013-5-12 22:52

請各位多多指教!

kucooboy_601374266 2013-2-26 10:08

不错

pangtina_185718184 2013-2-19 10:29

so nice to have you here,thanks for sharing
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