8051 microcontroller & 128×64 graphic LCD (SSD1306) with Python serial

The 8051 microcontroller (Atmel 89S52) receives an image via a USB to serial converter from a computer and displays it on the LCD.

The Python script to help you do this is SKDisplayConverter.pyw. It affords a GUI interface to help you preprocess and send any .jpg or .png image to the microcontroller.

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Requirements

• Install SDCC

• Install Python3 and the following prerequistites

  • Requires PyQt5, pyserial libraries

    $ pip install PyQt5
    

    $ pip install pyserial
    

  • Alternatively, install Python prerequisties using:

    $ pip install -r  requirements.txt
    

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Usage

This section below gives you a summary on how to use the compile and use the C program and the Python script.

C

• To compile the C program and generate the HEX file, you can use either Keil μVision or the command-line SDCC compiler.

  SDCC

  • Open command prompt in the current directory and type:

    make
    

  Note: The HEX file is generated in the bin folder.

  • To remove generated build files, use:

    make clean
    

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  Keil μVision

  Open the project file and use:

  Project -> Build Target 
  

  Note: Ensure that the check box for Create HEX File is enabled under Flash -> Configure Flash tools -> Output tab

  Generated HEX file is stored by default in keil\Objects

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Python

• The Python code for the GUI program can be run directly by double-clicking SKDisplayConverter.pyw.

• Select any image using the application and send it to the microcontroller using the button Send to Display. Additional features on the application allow you to threshold pixels from 0 to 255 as to whether it is classified as black or white.

• You can also save the image as an array of characters in a .txt file if you wish to use it later in your own C program.

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Proteus Simulation

• Use the Proteus file to simulate what has been described without using actual hardware.

• Create virtual COM ports for communication between Python and the virtual microprocessor in Proteus using Eltima virtual COM port driver.

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