From: "Øyvind Harboe" <oyvind.harboe@zylin.com>
To: ecos-discuss@sources.redhat.com
Cc: ezeq@cc.isel.ipl.pt
Subject: [ECOS] hal_delay_us() patch to at91_misc + multithreading
Date: Wed, 08 Jun 2005 11:24:00 -0000 [thread overview]
Message-ID: <1118229873.11654.24.camel@localhost.localdomain> (raw)
Original message:
http://sourceware.org/ml/ecos-discuss/2005-05/msg00357.html
Your fix seems approperiate. Perhaps you should try to post it to
ecos-patches?
Q: As near as I can tell, HAL_DELAY_US() is not thread safe in
at91_misc.c. Is this correctly observed?
I can't tell by reading the eCos documentation whether or not
hal_delay_us or HAL_DELAY_US is supposed to be thread safe.
http://sources.redhat.com/ecos/docs-2.0/ref/hal-interrupt-handling.html
The implementation of I2C uses hal_delay_us, but since I'm not currently
using that code(our home rolled I2C code has not been phased out yet),
I'm not sure whether or not interrupts are disabled while hal_delay_us()
is invoked inside the I2C code.
--
Øyvind Harboe
http://www.zylin.com
--
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next reply other threads:[~2005-06-08 11:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-08 11:24 Øyvind Harboe [this message]
2005-06-11 13:49 ` Bart Veer
2005-06-13 17:57 ` Øyvind Harboe
2005-06-13 18:54 ` Bart Veer
2005-06-15 6:22 ` Øyvind Harboe
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