PIC Microcontroller > Projects > Interfacing(USB - RS232 - I2c -ISP) Projects > Usbpicprog – A free and open source USB Microchip PIC programmer (Software and Hardware) for Linux, Windows e MAC

Usbpicprog – A free and open source USB Microchip PIC programmer (Software and Hardware) for Linux, Windows e MAC

Sunday October 16, 2022 / Ibrar Ayyub
Categories: Interfacing(USB - RS232 - I2c -ISP) Projects
Tags: microchip, pic microcontoller, usb, usbpicprog
Contents hide
1 Hardware
2 Firmware
3 About The Author
3.1 Ibrar Ayyub

Usbpicprog is an USB in circuit programmer for Microchip PIC processors family PIC10F, PIC12F, PIC16F, PIC18F, PIC24F, PIC32F and I2C Eeprom 24xx. The hardware is as simple as possible, the current version only contains one PIC18F2550, 4 mosfets, and besides the connectors a hand full of passive components.

Usbpicprog – A free and open source USB Microchip PIC programmer (Software and Hardware) for Linux, Windows e MAC Read more: Usbpicprog – A free and open source USB Microchip PIC programmer (Software and Hardware) for Linux, Windows e MAC | Xtronic Free Electronic Circuits and Informations http://xtronic.org/circuit/usbpicprog-free-open-source-usb-microchip-pic-programmer-software-hardware/#ixzz3W7ZaxV00Components
Usbpicprog consists of three main components:

  • Hardware – A PCB design which contains the necessary components to interface from the USB port to a Microchip ICSP (in circuit serial programming) header.
  • Firmware– The software that runs on the processor on the PCB. It contains the USB framework, and high and low level functions for PIC in circuit programming.The firmware can also be divided into two parts:
    • The bootloader (Microchip Picdem bootloader) has to be loaded only once, after that this part of the firmware can be upgraded through the usbpicprog interface.
    • The usbpicprog part of the firmware contains the actual programming algorithms for all the implemented PIC devices.
  • PC software – A wxWidgets based (cross platform) application to communicate with the usbpicprog hardware / firmware. This application is known to function well on Linux, Windows (XP or later) and Macosx.

Hardware

Schematic – usb pic programmer – Usbpicprog

The hardware is built around a microchip PIC18F2550, this microcontroller has on board USB capabilities. The schematic and PCB have been designed in Kicad, an open source EDA solution
The PCB files are available in Gerber format and the schematic in pdf in the download section so that you can open them with your favourite tool.

Usbpicprog – A free and open source USB Microchip PIC programmer (Software and Hardware) for Linux, Windows e MAC Read more: Usbpicprog – A free and open source USB Microchip PIC programmer (Software and Hardware) for Linux, Windows e MAC | Xtronic Free Electronic Circuits and Informations http://xtronic.org/circuit/usbpicprog-free-open-source-usb-microchip-pic-programmer-software-hardware/#ixzz3W7ZaxV00Firmware

The code for the PIC18F2550 has been written using Microchip C18. It was based on the PicDem USB stack from Microchip. The data is sent in blocks through interrupt read /write and the programming functions are implemented in firmware.

About The Author

Ibrar Ayyub

I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.

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