[uracoli-devel] [bug #30246] Frame tx issue with SPI speed

[Joerg Wunsch]

URL:
  <http://savannah.nongnu.org/bugs/?30246>

                 Summary: Frame tx issue with SPI speed
                 Project: µracoli
            Submitted by: joerg_wunsch
            Submitted on: Thu 24 Jun 2010 03:30:29 PM CEST
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
                  Status: None
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any

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Details:

I've been stumbling across errors resulting in the first
frame being corrupted, which turn out to be caused by a too
slow SPI speed.

When using radio_send_frame(), the actual sequence of actions
used to transmit the frame is outside the control of the
users, so somehow, these SPI speed constraints have to be
handled.

I'm going to start a discussion on the mailinglist for this,
as there are several possible solutions, starting from just
documenting the constraints, down to attempts to automatically
select a different sequence of actions depending on the CPU
(and thus SPI) speed.  This bugreport is meant as a placeholder
to keep until the issue has been resolved, one way or the
other.




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