When UART.LSR.OE is asserted, there's no interrupt, why?

twicave Feng

Other Parts Discussed in Thread: TMS320C6748

my uart2 is configed to a receiver(FIFO is enabled), to accept keyboard msg.7 bytes per msg.

when msg send more quickly, LSR.OE bit will be set, and UART interrupt will never entered.

why?

0 Paul.Yin over 14 years ago

Hi,

Please include the device name in the subject field in the future.

By "when msg send more quickly", do you mean you press the keyboard more quickly? or somehow setting the baudrate higher? please clarify.

Also, are you implying when things are slow, you do see receiver working?

regards,

Paul

0 twicave Feng over 14 years ago in reply to Paul.Yin

1.device name : TMS320C6748

2."msg send more quickly" means press keyboard more quickly.

3. yes, when press key slowly, everything is OK.

0 twicave Feng over 14 years ago in reply to twicave Feng

the problem has been solved.

It's a logical code fault: In ISR, I didn't retrieve all characters in FIFO.

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