[avr-gcc-list] TWI interface on Atmega16

[Bart Friederichs]

Hi,

I have some problems programming the TWI interface on two Atmega16's.

The situation is as follows: one Atmega is a transmitting master, the 
other a receiving slave. The master sends a START condition, then waits 
for TWINT, sends SLA+W, waits, sends BYTE, waits and finally sends a 
STOP. The receiver is set in RS mode and waits for TWINT (address and 
ACK are received), sets TWINT to 1 and waits again. After the wait the 
data is in the TWDR register.

The master does this in a loop, incrementing the sent byte every cycle. 
The weird thing is that it only works the first cycle. When the master 
wants to send the second byte, it waits forever for TWINT after issuing 
the START condition.

Could someone help me with this?
TIA
Bart

PS
The according files are attached; libtwi.c is where all TWI code is.