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Detecting end of transmitted break on KE04Z UART

Question asked by Randy Glenn on Apr 14, 2015
Latest reply on May 21, 2015 by Randy Glenn



I'm using a KE04Z (using the FRDM board for now), and I'm trying to have my device send a break on an RS485 bus back to the bus master. I need the device to assert a GPIO to drive the transmit enable on the RS485 transceiver - I'm using the UART interrupt on the TC flag to do this right now for data, but it isn't working for a break (the TC interrupt fires before the break is sent).


Is there some way to detect when a break (sent using the SBK bit in UART0_C2) has finished?