Content originally posted in LPCWare by sravet on Thu Oct 03 00:02:24 MST 2013
I am working with UART2 on an LPC1768 part. It is connected to an RF remote receiver that outputs data at 9600 baud. I have configured UART2 for 9600 baud and verified that it works correctly by connecting it to my laptop via a USB/TTL serial converter. Characters I type on the laptop are correctly received by the 1768.
However when I connect to the RF receiver I see constant line errors. The LSR value I read is 0xe1. This indicates RXFE (error in RX FIFO), Transmitter empty, and receiver data ready. This doesn't make sense to me -- There is an error in the RX fifo, but none of the LSR error bits (break, parity, frame, overrun) are set. What error is bit 7 indicating?
thanks,
--steve
