2.42 inch SPI / I2C OLED display
module introduction:
It is 2.42inch 128x64 pixels is mono oled display module, it is SPI interface with 9 pins connection, built in font chip.
The 2.42 inch monochrome oled display,
is a graphic passive matrix oled display, it have 128x64 dots, wide viewing angle, wide
temperature, high brightness, high contrast, fast response time.
Mono graphic OLED display module screen-2.42inch
oled screen:
2.42’’ 128x64 OLED lcd display module could be
displayed in wide temperature, its working temperature could be reached to -40
degree, and 80 degree.
2.42 inch OLED screen 128x64 dots is the best display solution in the
outdoor display, such as sunlight environment, and also for industrial or
medical application that need the wide viewing angle and high brightness
display.
2.42" SPI oled display
module key parameters:
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Display mode:
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Monochrome OLED display
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Diagonal Size
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2.42“ OLED ( diagonal)
|
|
Display Format
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128x64 Dots
|
|
Display module size
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72.0x43.0mm
|
|
Active area
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55.01x27.49mm
|
|
Driver IC
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SSD1309
|
|
Interface
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SPI interface
|
|
Color
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White/Yellow/Blue/Green
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Drawing:
Pin Connection:
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PIN
No.
|
Symbol
|
Description
|
|
1
|
GND
|
Ground
|
|
2
|
VCC
|
Power input 3.3V
|
|
3
|
SCL
|
SPI clock
|
|
4
|
SDA
|
SPI data
|
|
5
|
RES
|
OLED reset
|
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6
|
DC
|
command/data select
|
|
7
|
CS
|
Chip select, low enable
|
|
8
|
FSO
|
Font chip data output, low enable / NC
|
|
9
|
CS2
|
Font chip
select, low enable /NC
|
SPI OLED display module 2.42" initialized code:
Void OLED_Init(void)
{//OLED reset
OLED_RES_Clr();//RES to 0
delay_ms(200);// delay 200ms
OLED_RES_Set();//RES to 1
//OLED initial
OLED_WR_Byte(0xFD,OLED_CMD);
OLED_WR_Byte(0x12,OLED_CMD);
OLED_WR_Byte(0xAE,OLED_CMD);//--turn off oled
panel
OLED_WR_Byte(0xd5,OLED_CMD);//--set display
clock divide ratio/oscillator frequency
OLED_WR_Byte(0xA0,OLED_CMD);
OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex
ratio(1to64)
OLED_WR_Byte(0x3f,OLED_CMD);//--1/64duty
OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset
Shift Mapping RAM Counter(0x00~0x3F)
OLED_WR_Byte(0x00,OLED_CMD);//-not offset
OLED_WR_Byte(0x40,OLED_CMD);//--set start line
address Set Mapping RAM Display Start Line(0x00~0x3F)
OLED_WR_Byte(0xA1,OLED_CMD);//--Set SEG/Column
Mapping 0xa0 right left exchange 0xa1 normal
OLED_WR_Byte(0xC8,OLED_CMD);//Set COM/Row Scan
Direction 0xc0 upside down 0xc8 normal OLED_WR_Byte(0xDA,OLED_CMD);//--set com pins
hardware configuration
OLED_WR_Byte(0x12,OLED_CMD);
OLED_WR_Byte(0x81,OLED_CMD);//--set contrast
control register
OLED_WR_Byte(0x7F,OLED_CMD);//Set SEG Output
Current Brightness
OLED_WR_Byte(0xD9,OLED_CMD);//--setpre-chargeperiod
OLED_WR_Byte(0x82,OLED_CMD);//Set Pre-Charge
as 15 Clocks & Discharge as 1 Clock
OLED_WR_Byte(0xDB,OLED_CMD);//--set vcomh
OLED_WR_Byte(0x34,OLED_CMD);//Set VCOM Deselect
Level
OLED_WR_Byte(0xA4,OLED_CMD);//Disable Entire
Display On(0xa4/0xa5)
OLED_WR_Byte(0xA6,OLED_CMD);//Disable Inverse
Display On(0xa6/a7)
OLED_Clear();
OLED_WR_Byte(0xAF,OLED_CMD);
}
#defineOLED_CMD0//write command
#defineOLED_DATA1//write data
voidOLED_WR_Byte(u8dat,u8cmd)
{u8i;
if(cmd)
OLED_DC_Set();
Else
OLED_DC_Clr();
OLED_CS_Clr();
for(i=0;i<8;i++)
{
OLED_SCL_Clr();
if(dat&0x80)
OLED_SDA_Set();
elseOLED_SDA_Clr();
OLED_SCL_Set();
dat<<=1;
}
OLED_CS_Set();
OLED_DC_Set();
}
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