Writing Code for the ATtiny10

I previously wrote about the hardware aspects of getting your code into an ATtiny10 some 7 years ago (wow that was realllyy a long time ago!).

Now, avrdude is at version 6.3 and the TPI bitbang implementation has already been integrated in. The upstream avr-gcc (and avr-libc) also have proper support for ATtiny10s now. These software components are bundled with most distributions, including the Arduino IDE, making it easily accessible for anyone. Previously a fully integrated and working toolchain only came from Atmel and it was behind a registration page.

The price of the ATtiny10 has also dropped by a lot. When I first bought this microcontroller in 2010, element14 carried it for $1.85 in single quantities. Now, they are only $0.56 each.

I thought I’d write up a short post about writing and compiling code for it.

ATtiny10 on a prototyping board

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Programming the ATtiny10

Recently I wanted to use a really tiny, low pin-count microcontroller for a project, so I decided to buy a few Atmel ATtiny10 to experiment with.

To get it working, I would need a compiler and a programmer. I like working with Atmel chips because they have cross-platform development tools. The Arduino IDE that I’ve been using comes with avr-gcc and avrdude, both of which are really awesome open source tools for compiling and uploading code to the microcontrollers. If you just want the tools without the Arduino IDE, you can get the WinAVR package.

However both of these tools do not work with the ATtiny10 yet. I do not expect a C compiler, but even the GNU assembler that comes with avr-gcc still doesn’t support this chip. avrdude recently added support for uploading to the ATtiny10, but only through the STK or AVRISP programmer, which I didn’t want to fork out money to buy.

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