On Wed, Jun 03, 2015 at 12:45:38PM +0200, d.rodomonti wrote:
> The data are provide to the 245 by a NIOS controller that implements
> a sort of hand shake protocol.
Sort of? Does it, or does it not check for the "RXNE" (or whatever it
is called signal?
Even if in tests is mostly works, you must account on that hardware
side that the software migth decide to do something else for a while,
and then the buffer fills. The '245 handles that situation gracefully
and will let your hardware know when it is no longer possible to
accept data.
Roger.
>
> On 03.06.2015 12:40, Rogier Wolff wrote:
> >On Tue, Jun 02, 2015 at 11:50:06AM +0200, d.rodomonti wrote:
> >
> >>ret = ftdi.usb_open(ftdic, 0x0403, 0x6001)
> >>ret = ftdi.usb_reset(ftdic)
> >>ret = ftdi.usb_purge_buffers(ftdic)
> >>ret = ftdi.set_baudrate(ftdic, 115200)
> >>ret = ftdi.set_line_property(ftdic, ftdi.BITS_8 , ftdi.STOP_BIT_1,
> >>ftdi.NONE)
> >>ret = ftdi.setflowctrl(ftdic,ftdi.SIO_DISABLE_FLOW_CTRL)
> >How are you putting data into the '245?
> >
> >You are setting a baud rate and "disable flow control" which do not
> >really make sense for a '245 chip.
> >
> > Roger.
> >
> >
>
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