SCL remains low after NACK

[oomek]

I have 2 Attiny85s, one master and one slave, connected one to another. If there is no slave listening, or it hasn't booted yet and I send something from master I receive NACK and the SCL is stuck low from this moment onwards. The Mastes is still senting packets, but SCL is always low inbetwen packets. That prevents slave from receiving any further bytes.

[oomek]

I've managed to overcome this by replacing the following line:

TinyWire/twi.cpp

Line 637 in 1bba30c

else return USI_TWI_Get_State_Info();

wit this:

else {
    USI_TWI_Master_Stop()
    return USI_TWI_Get_State_Info();
}

Unfortunately it didn't not help much with issue: #27