https://github.com/aasmundn/attiny-isp

In-circuit Serial Programmer (ISP) for first generation ATtiny devices.
https://github.com/aasmundn/attiny-isp

asm assembler assembly atmel attiny attiny15l avr avr-gcc in-circuit isp microchip programming serial

Last synced: 15 days ago
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In-circuit Serial Programmer (ISP) for first generation ATtiny devices.

• Host: GitHub
• URL: https://github.com/aasmundn/attiny-isp
• Owner: AasmundN
• Created: 2024-12-04T20:40:55.000Z (2 months ago)
• Default Branch: main
• Last Pushed: 2024-12-22T18:35:10.000Z (about 2 months ago)
• Last Synced: 2024-12-22T19:35:26.670Z (about 2 months ago)
• Topics: asm, assembler, assembly, atmel, attiny, attiny15l, avr, avr-gcc, in-circuit, isp, microchip, programming, serial
• Language: C
• Homepage:
• Size: 23.4 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# ATtiny In-circuit Serial Programmer (ISP)

In-circuit Serial Programmer for the first generation of [ATtiny microcontrollers](https://en.wikipedia.org/wiki/ATtiny_microcontroller_comparison_chart). These devices are very simple and can only be programmed in assembler; perfect for learning! The ISP programmer is implemented on an ATtiny1607.

## How to...

Compile the source files for ATtiny1607 using the GNU toolchain for AVR (avr-gcc etc) and CMake. You must also install the device family pack (DFP) for the ATtiny1607 and place it in a folder named _device_pack_. Upload with _pymcuprog_.

A simple CLI tool for communiacting with the programmer is in the cli folder. Install the tool with `go install isp`. For help type `isp --help`.

The example folder includes a simple led blinker program in assembler for the ATtiny15L. A simple Makefile for assembling, linking and uploading the program can be found in the same folder.

Will add circuit diagrams later...

## Further work

- Document code

- Write a cool(er) assembler program 

- PCB?

## Resources

- [ATtiny15L datasheet](https://ww1.microchip.com/downloads/en/DeviceDoc/doc1187.pdf)

- [ATtiny1607 datasheet](https://ww1.microchip.com/downloads/en/DeviceDoc/ATtiny807_1607-Data-Sheet-40002030A.pdf)

- [About AVR assembly](https://www.nongnu.org/avr-libc/user-manual/assembler.html#ass_isr)