0

ATtiny Running Lisp #Lisp @MicrochipMakes @technoblogy

Technblogy posts about placing uLisp on the small ATtiny 3216 microcontroller costing about a dollar.

Previously the smallest microcontroller that would run my uLisp interpreter was the ATmega328P, the basis for the popular Arduino Uno. This provides 32Kbytes of flash memory, 2Kbytes of RAM, and a 16MHz processor.

When I saw the specifications of Microchip’s new ATtiny 0-series and 1-series ranges of microcontrollers I realised that it might be possible to run uLisp on the ATtiny3216 and ATtiny3217, which have 32Kbytes of flash and 2Kbytes of RAM, making these the lowest cost processors capable of running Lisp; see Getting Started with the New ATtiny Chips.

For this project I chose the ATtiny3216 which has 20 pins in an SOIC package, and so is relatively easy to solder onto a breakout board. You could also use the ATtiny3217, which has 24 pins in a QFN package, but you would need surface-mount skills.

Tiny3216Lisp.gif

With uLisp running on an ATtiny3216 you can upload programs directly from the Arduino IDE Serial Monitor. Just type or copy-and paste the program into the field at the top of the Serial Monitor window, and click the Send button or press Return.

You can control the I/O ports directly, access I2C and SPI peripherals, and write programs to automate functions. You can also save small programs to EEPROM so they are retained when the power is disconnected, and they can be configured to run automatically on restart.

See all the details on the Technblogy blog.

 


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 14,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython 2019!

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7:30pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — Re-evaluating Amazon after its acquisition of Whole Foods

Wearables — It’s not a deal breaker

Electronics — Higher isn’t always better

Biohacking — Vitamin-C + Gelatin for Accelerated Recovery

Python for Microcontrollers — Supercharged Supercon with CircuitPython, Quoth the Raven MOAR PYTHON! #Python #Adafruit #CircuitPython #PythonHardware @circuitpython @micropython @ThePSF @Adafruit

Adafruit IoT Monthly — The S in IoT is for Security, Amazon announces Sidewalk and more!

Microsoft MakeCode — Xenomorph candy bucket and spooky workshops with MakeCode!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.