I whish to get interrupt after all bytes writen to TXDAT already fully sent, so I can disable my external RS485 transmitter from that interrupt. Is it possible?
Can I be sure that when TXRDY set (and I'm not write yet one byte after that), transmission of next byte (which is just now pushed into shift register) already started, so if I set TXDIS immediately now, that next byte will be transmitted before transmitter stopped and TXDISINT interrupt generated, and I can then use that interrupt to disable my extermal RS485 transmitter?
When exactly TXDISINT will be signalled? at end of stop bit? or in the middle?
I'm using LPC812.