NHD-2.7-12864WD - with Arduino – Newhaven Display Support Center

/ Program for writing to NHD-2.7-12864 OLED with SSD1322 controller with Serial Interface

/ This code is written for the Arduino Due using Serial Interface

/ Newhaven Display invests time and resources providing this open source code,

/ Please support Newhaven Display by purchasing products from Newhaven Display!

* This code is provided as an example only and without any warranty by Newhaven Display.

* Newhaven Display accepts no responsibility for any issues resulting from its use.

* The developer of the final application incorporating any parts of this

* sample code is responsible for ensuring its safe and correct operation

* and for any consequences resulting from its use.

* See the GNU General Public License for more details.

* Use Horizontal Orientation when converting BMP to hex code to display custom image using LCD assistant.

//---------------------------------------------------------

#define OLED_DC 49 //Register Select signal

#define OLED_RESET 48 //Reset signal

#define OLED_CS 47 //Chip select signal

#define OLED_CLK 52 //Serial clock signal

#define OLED_MOSI 51 //Serial data signal

/****************************************************

* Hex Table for Image Pic *

*****************************************************/

unsigned char NHD_Logo [] = {

0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

0x00, 0x00, 0x00, 0x00, 0x00, 0x7C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

0x00, 0x00, 0xFF, 0xFF, 0xD9, 0x83, 0xC6, 0x31, 0x98, 0xC1, 0x82, 0x0C, 0x3C, 0x63, 0x00, 0x00, 0x00, 0x00, 0xFF,

0xFF, 0xD9, 0x87, 0xC6, 0x33, 0x98, 0xC1, 0x83, 0x0C, 0x7C, 0x73, 0x00, 0x00, 0x00, 0x00, 0xFC, 0x00, 0x1D, 0x86,

0x03, 0x33, 0x18, 0xC3, 0xC3, 0x18, 0xC0, 0x7B, 0x00, 0x00, 0x00, 0x00, 0x7C, 0x7F, 0xDD, 0x8E, 0xE3, 0x7B, 0x1F,

0xC3, 0x61, 0xB8, 0xFC, 0x7B, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xDF, 0x8F, 0xC1, 0xDF, 0x1F, 0xC6, 0x61, 0xB1,

0xFC, 0x6F, 0x00, 0x00, 0x00, 0x3C, 0x01, 0xC0, 0x1B, 0x84, 0x01, 0xCE, 0x18, 0xC7, 0xE0, 0xF0, 0xC0, 0x67, 0x00,

0x00, 0x00, 0x7E, 0x07, 0x9F, 0xDB, 0x87, 0xE1, 0xCE, 0x18, 0xCE, 0x70, 0xE0, 0x7C, 0x67, 0x00, 0x00, 0x00, 0x7F,

0xFE, 0x3F, 0xD9, 0x83, 0xE0, 0xCC, 0x18, 0xCC, 0x38, 0x60, 0x3C, 0x63, 0x00, 0x00, 0x00, 0xFF, 0xFC, 0xE0, 0x00,

0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7E, 0x01, 0xC0, 0x00, 0x00, 0x00, 0x00,

0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0E, 0x3C, 0x01, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x00, 0x07, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

0x00, 0x00, 0x1F, 0x80, 0x0E, 0x00, 0x3F, 0x0C, 0x3F, 0x8F, 0xC3, 0x00, 0xC3, 0x18, 0x00, 0x00, 0x00, 0x00, 0x3F,

0xFF, 0xFC, 0x00, 0x3F, 0x8C, 0x3F, 0x8C, 0xE3, 0x01, 0xC3, 0x98, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0xF8, 0x00,

0x31, 0xCC, 0x30, 0x0C, 0x63, 0x01, 0x60, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x80, 0x00, 0x00, 0x30, 0xCC, 0x3F,

0x0E, 0xC3, 0x03, 0x20, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x30, 0xCC, 0x03, 0x8F, 0xC3, 0x03,

0xF0, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0x8C, 0x3F, 0x8C, 0x03, 0x07, 0xF0, 0x60, 0x00,

0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0x8C, 0x3F, 0x0C, 0x03, 0xE6, 0x18, 0x60, 0x00, 0x00, 0x00, 0x00,

0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x83, 0x41, 0xE0, 0x70, 0x78, 0x24, 0x0C,

0x0F, 0x06, 0x0F, 0x06, 0x81, 0x80, 0x80, 0x00, 0x01, 0x83, 0xC0, 0xC0, 0xE0, 0x58, 0x34, 0x0C, 0x06, 0x06, 0x09,

0x07, 0x81, 0x80, 0x80, 0x00, 0x01, 0x82, 0xC0, 0xC0, 0xC0, 0x70, 0x3C, 0x1E, 0x06, 0x06, 0x09, 0x05, 0x83, 0xC0,

0x80, 0x00, 0x01, 0x82, 0x40, 0xC0, 0x70, 0x58, 0x2C, 0x12, 0x06, 0x06, 0x0F, 0x04, 0x82, 0x40, 0xE0, 0x00, 0x00,

0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00

};

/****************************************************

* Function Commands *

*****************************************************/

void data(unsigned char d) //Data Output Serial Interface

{

unsigned int n;

digitalWrite(OLED_CS, LOW);

digitalWrite(OLED_DC, HIGH);

for(n=0;n<8;n++){

if((d&0x80)==0x80)

digitalWrite(OLED_MOSI, HIGH);

else

digitalWrite(OLED_MOSI, LOW);

while(0);

d=(d<<1);

digitalWrite(OLED_CLK, LOW);

while(0);

digitalWrite(OLED_CLK, HIGH);

while(0);

digitalWrite(OLED_CLK, LOW);

}

digitalWrite(OLED_CS, HIGH);

}

void command(unsigned char d) //Command Output Serial Interface

{

unsigned int n;

digitalWrite(OLED_CS, LOW);

digitalWrite(OLED_DC, LOW);

for(n=0;n<8;n++){

if((d&0x80)==0x80)

digitalWrite(OLED_MOSI, HIGH);

else

digitalWrite(OLED_MOSI, LOW);

while(0);

d=(d<<1);

digitalWrite(OLED_CLK, LOW);

while(0);

digitalWrite(OLED_CLK, HIGH);

while(0);

digitalWrite(OLED_CLK, LOW);

}

digitalWrite(OLED_CS, HIGH);

}

/****************************************************

* Display Commands *

*****************************************************/

void Set_Column_Address_12864(unsigned char a, unsigned char b)

{

command(0x15); // Set Column Address

data(a); // Default => 0x00

data(b); // Default => 0x77

}

//--------------------------------------------------------------------------

void Set_Write_RAM_12864()

{

command(0x5C); // Enable MCU to Write DATA RAM

}

//--------------------------------------------------------------------------

void Set_Row_Address_12864(unsigned char a, unsigned char b)

{

command(0x75); // Set Row Start and End Address

data(a); // Default => 0x00

data(b); // Default => 0x7F

}

//--------------------------------------------------------------------------

void Set_Remap_12864(unsigned char a, unsigned char b)

{

command(0xA0); // Set Remap

data(a); // Default => 0x00

data(b); // Default => 0x00

}

//--------------------------------------------------------------------------

void Set_Display_Start_Line_12864(unsigned char a)

{

command(0xA1); // Set Display RAM Display Start Line

data(a); // Default => 0x00

}

//--------------------------------------------------------------------------

void Set_Display_Offset_12864(unsigned char a)

{

command(0xA2); // Set Verticle Shift

data(a); // Default => 0x00

}

//--------------------------------------------------------------------------

void Display_Mode_12864(unsigned char a)

{

command(a); // 0xA4 => Entire Display OFF

// 0xA5 => Entire Display ON, all pixels Grayscale level 15

// 0xA6 => Normal Display (Default)

// 0xA7 => Inverse Display

}

//--------------------------------------------------------------------------

void Enable_Partial_Display_12864(unsigned char a, unsigned char b)

{

command(0xA8); // Turns ON partial mode

data(a); // Address of start row

data(b); // Address of end row.

}

//--------------------------------------------------------------------------

void Exit_Partial_Display_12864()

{

command(0xA9); // Exit Partial Display Mode

}

//--------------------------------------------------------------------------

void Function_Selection_12864(unsigned char a)

{

command(0xAB); // Function Selection

data(a); // Default => 0x01

}

//--------------------------------------------------------------------------

void Set_Sleep_Mode_12864(unsigned char a)

{

command(a); // 0xAE => Sleep Mode ON

// 0xAF => Sleep Mode OFF

}

//--------------------------------------------------------------------------

void Set_Phase_Length_12864(unsigned char a)

{

command(0xB1); // Set Phase Length

data(a); // Default => 0x97

}

//--------------------------------------------------------------------------

void Set_Display_Clock__Oscillator_Frequency_12864(unsigned char a)

{

command(0xB3); // Set Osc Frequency

data(a); //

}

//--------------------------------------------------------------------------

void Enable_External_VSL(unsigned char a, unsigned char b)

{

command(0xB4); // Enable External VSL

data(a); //

data(b); //

}

//--------------------------------------------------------------------------

void Set_GPIO_12864(unsigned char a)

{

command(0xB5); // Set GPIO

data(a); //

}

//--------------------------------------------------------------------------

void Set_Second_Precharge_Period_12864(unsigned char a)

{

command(0xB6); // Set Second Precharge Period

data(a); //

}

//--------------------------------------------------------------------------

void Default_Grayscale_Command_12864()

{

command(0xB9); // Sets Default Grayscale

}

//--------------------------------------------------------------------------

void Set_Precharge_Voltage_12864(unsigned char a)

{

command(0xBB); // Set Precharge Voltage Level

data(a); // Default => 0x17

}

//--------------------------------------------------------------------------

void Set_VCOMH_Voltage_12864(unsigned char a)

{

command(0xBE); // Set Second Precharge Period

data(a); // Default => 0x04

}

//--------------------------------------------------------------------------

void Set_Contrast_Control_12864(unsigned char a)

{

command(0xC1); // Set Contrast Control Level

data(a); // Default => 0x7F

}

//--------------------------------------------------------------------------

void Master_Contrast_Control_12864(unsigned char a)

{

command(0xC7); // Master Contrast Control

data(a); // Default => 0x0F

}

//--------------------------------------------------------------------------

void Set_Multiplex_Ratio_12864(unsigned char a)

{

command(0xCA); // Set MUX Ratio

data(a); // Default => 0x7F

}

//--------------------------------------------------------------------------

void Display_Enhancement_12864(unsigned char a)

{

command(0xD1); // Display Enhancement

data(a); //

data(0x20); //

}

//--------------------------------------------------------------------------

void Set_Command_Lock_12864(unsigned char a)

{

command(0xFD); // Set Lock/Unlock Commands

data(a); // Default => 0x12

}

//--------------------------------------------------------------------------

//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

// Show Blank (Clear Screen)

//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

void ClearPixel_12864()

{

unsigned int i, j;

Set_Column_Address_12864(0x1C,0x5B);

Set_Row_Address_12864(0x00,0x3F);

Set_Write_RAM_12864();

for(i=0;i<64;i++) //Columns

{

for(j=0;j<128;j++) //Rows

{

data(0x00);

delayMicroseconds(100);

}

//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

// Show Checkboard (Full Screen)

//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

void FillPixel_12864()

{

unsigned int i, j;

Set_Column_Address_12864(0x1C,0x5B); //1C & 5B = DISPLAY Start & End address.

Set_Row_Address_12864(0x00,0x3F);

Set_Write_RAM_12864();

for(i=0;i<32;i++) //Columns

{

for(j=0;j<64;j++) //Rows

{

data(0xFF);

delayMicroseconds(100);

data(0x00);

delayMicroseconds(100);

}

for(j=0;j<64;j++) //Rows

{

data(0x00);

delayMicroseconds(100);

data(0xFF);

delayMicroseconds(100);

}

//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

// Show Image (Full Screen)

//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

// Driver IC Mapping = 256x64 (2 SEG Lines Tied to 1 COM Line to form 1 Pixel)

// 8 bits (1 Byte) = 1 Pixel.

// Function parses through Hex Table Data and spreads 1 Byte of data over 8 Pixels.

//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

void ImageDisplay_12864(unsigned char *image)

{

unsigned int i, l, n, buff;

//Set_Remap_12864(0x04,0x11); //To flip 180 degrees

Set_Column_Address_12864(0x1C,0x5B);

Set_Row_Address_12864(0x00,0x3F);

Set_Write_RAM_12864();

for(i=0;i<1024;i++){

buff = *image;

n = 7;

for(l=0;l<8;l++){

if((buff >> n) & 0x80 == 0x80){

data(0xFF);

}

else{

data(0x00);

}

n--;

}

image++;

}

/****************************************************

* Initialization For controller *

*****************************************************/

void OLED_Init_12864()

{

Set_Sleep_Mode_12864(0xAF); // Display OFF

Set_Command_Lock_12864(0x12); // Unlock commands for OLED

Set_Display_Clock__Oscillator_Frequency_12864(0x91); // Set Display Clock / Oscillator Frequency

Set_Multiplex_Ratio_12864(0x3F); // Set Multiplex Ratio

Set_Display_Offset_12864(0x00); // Set Display Offset

Function_Selection_12864(0x01); // Function Selection

Set_Display_Start_Line_12864(0x00); // Set Display Start Line

Set_Remap_12864(0x16,0x11); // Set Remap. (A[1]) & (A[4]) can be adjusted to flip display orientation

Master_Contrast_Control_12864(0x0F); // Master Contrast Control

Set_Contrast_Control_12864(0x9F); // Set Contrast Control

Set_Phase_Length_12864(0x72); // Set Phase Length

Set_Precharge_Voltage_12864(0x1F); // Set Precharge Voltage

Enable_External_VSL(0xA0,0xFD); // Enable External VSL

Set_VCOMH_Voltage_12864(0x04); // Set VCOMH Voltage

Display_Mode_12864(0xA6); // Set Normal Display

Exit_Partial_Display_12864(); // Exit Partial Display Mode

Display_Enhancement_12864(0xA2); // Display Enhancement

Set_GPIO_12864(0x00); // Set GPIO

Default_Grayscale_Command_12864(); // Default Linear Grayscale Table

Set_Second_Precharge_Period_12864(0x08); // Set Second Precharge Period

Set_Sleep_Mode_12864(0xAF); // Display ON

}

/*****************************************************

* Setup Function, to run once *

*****************************************************/

void setup()

{

pinMode(OLED_CLK, OUTPUT);

pinMode(OLED_MOSI, OUTPUT);

pinMode(OLED_DC, OUTPUT);

pinMode(OLED_RESET, OUTPUT);

pinMode(OLED_CS, OUTPUT);

digitalWrite(OLED_RESET, LOW);

delay(150);

digitalWrite(OLED_RESET, HIGH);

delay(150);

OLED_Init_12864(); //Initialization Sequence

delay(10);

}

/*****************************************************

* Loop Function, to run repeatedly *

*****************************************************/

void loop() {

FillPixel_12864();

delay(1000); //1 second delay

ClearPixel_12864();

delay(250); //1/4 second delay

ImageDisplay_12864(NHD_Logo);

delay(2000); //2 second delay

command(0xA7);

delay(2000); //2 second delay

command(0xA6);

delay(2000); //2 second delay

ClearPixel_12864();

delay(250); //1/4 second delay

}

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