I had not enabled the TXRDY interrupt, so I have added that into the code shown above. Know the interrupts occur in the following order: AAS, RXRDY, TXRDY, AAS, TXRDY The first TXRDY actually seems to occur *before* the restart byte with the read bit. Also there is still no STOP or NACK. There has been no change in the output, it still hangs after reading the first byte from the slave :(
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