Re: [ECOS] Serial overruns

[Jesper Skov <jskov at redhat dot com>]

>>>>> "Matt" == Matt Holgate <matt@dcs.gla.ac.uk> writes:

Matt> Jonathan Larmour <jlarmour@redhat.com> writes:
>> Still, hardware flow control should prevent this. It looks like
>> it's gotten broken since the PC target uses the generic 16550
>> serial driver (assuming you are using anonymous CVS, not 1.3.1),
>> and that supports it.

Matt> What, even though it is the FIFO in the chip that is
Matt> overflowing? I thought the hardware flow control was activated
Matt> by software when the buffer in the serial driver reached the
Matt> high watermark? If this is the case, then hardware flow control
Matt> won't help a bit...or can the UART itself active flow control?

Indeed - that's what HW flow control is about.

Jesper