Software Serial for ATtiny MCUs.
This is a port of Arduino SoftwareSerial for ATtiny using avr-gcc / Atmel Studio.
This version is currently ported to ATtiny85.
The original, described in my blog post ATtiny Software Serial, was written for ATtiny84 and can be found here.
It'd be nice if the code could be set up to more easily support configuration for multiple ATtiny MCUs.
- Appropriate Register names such as PCMSK (vs PCMSK0), PCIE (vs PCIE0), and so forth
- More easily select pins based on MCU chosen.
Then again, you could always just use ATtiny Core (Spence Konde) and do all this in Arduino.