Difference between revisions of "Matrix - 0.96' 128x64 OLED"

Revision as of 14:56, 16 June 2016

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1 Introduction

0.96inch 128x64 OLED

This is a tiny single color OLED. Its dimension is 0.96". Its resolution is 128 x 64. It can display text and graphics.It is high contrast and low power consumption. This module is powered by 5V which is then converted to 3.3V to OLED. It communicates via SPI or I2C. Its signal level is 3.3V. By default it communicates via SPI. If you want to set it to I2C you can change the module's resistor configuration.

2 Features

• Tiny
• High contrast, low power consumption
• SPI/I2C
• 2.54mm spacing pin header
• PCB Dimension(mm): 27 x 32

• Pin Description:

3 Basic Device Operation

4 Download Matrix Source Code

All the matrix modules' code samples are open source. They are maintained on GitHub --https://github.com/friendlyarm/matrix.git
Each branch in this hub contains the matrix modules' code samples for a board that the matrix modules can work with.

• The nanopi branch contains the matrix modules' code samples for the NanoPi
• The nanopi 2 branch contains the matrix modules' code samples for the NanoPi 2
• The tiny4412 branch contains the matrix modules' code samples for the Tiny4412
• The raspberrypi branch contains the matrix modules' code samples for the RaspberryPi

Please follow the steps below to get the source code:
Install the git utility on a PC running Ubuntu14.04

$ sudo apt-get install git

Clone the matrix code from GitHub

$ git clone https://github.com/friendlyarm/matrix.git

If this is successful a "matrix" directory will be generated, which will contain all the matrix modules' code samples.

5 Applications

5.1 Connect to NanoPi M1

Please refer to the following connection diagram to connect the module to the NanoPi M1
Matrix-0.96'_128x64_OLED_nanopi_m1

Connection Details

5.2 Connect to NanoPi 2

Please refer to the following connection diagram to connect the module to the NanoPi 2:
Matrix-0.96'_128x64_OLED_nanopi_2

Connection Details:

6 Compile & Run Test Program

Boot your ARM board with Debian and copy the matrix code

$ apt-get update && apt-get install git
$ git clone https://github.com/friendlyarm/matrix.git

If your cloning is done successfully a "matrix" directory will be generated.

Compile and install Matrix:

$ cd matrix
$ make && make install

Run test program:

$ matrix-oled

Here is what you should expect:
matrix-oled_result
The OLED displays the following two lines:
"ABCDEFGHIJKLMN"
"123456789"

7 Code Sample

This Matrix code sample can work with all the ARM boards mentioned in this module's wiki. The name of this code sample is "matrix-0.96_128x64_oled". Here is its source code:

int main(int argc, char *argv[]) 
{
    int devFD;
 
    if (boardInit() < 0) {
        printf("Fail to init board\n");
        return -1;
    }
 
    if ((devFD = OLEDInit(GPIO_PIN(7), GPIO_PIN(11))) == -1) {
        printf("Fail to init OLED\n");
        return -1;
    }
    OLEDCleanScreen(devFD);
    // Char bitmap: 8x16
    OLEDDisp8x16Str(devFD, 0, 0, "ABCDEFGHIJKLMN");
    OLEDDisp8x16Str(devFD, 0, 16, "123456789");
    OLEDDeInit(devFD);
 
    return 0;
}

For more details about this APIs called in this code sample refer to :Matrix API reference manual

8 Resources

9 Update Log

9.1 Feb-19-2016

• Added Sections 3, 4, 5, 6 and 7