diff options
author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2011-03-04 14:06:50 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2011-03-04 14:06:50 +0000 |
commit | d3210d0a11dbebd032b42a4bac3031143d591b5e (patch) | |
tree | 3a18602780f958943f8a2d5b09a63772a4df6232 /c/src/lib/libbsp/sparc/erc32/clock/ckinit.c | |
parent | Fix the date. (diff) | |
download | rtems-d3210d0a11dbebd032b42a4bac3031143d591b5e.tar.bz2 |
2011-03-04 Joel Sherrill <joel.sherrilL@OARcorp.com>
PR 1748/bsps
* clock/ckinit.c: When the clock tick generates an interrupt WHILE we
have interrupts disabled doing a get TOD or uptime, the get
nanoseconds handler was returning a bogusly large number.
Diffstat (limited to 'c/src/lib/libbsp/sparc/erc32/clock/ckinit.c')
-rw-r--r-- | c/src/lib/libbsp/sparc/erc32/clock/ckinit.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/c/src/lib/libbsp/sparc/erc32/clock/ckinit.c b/c/src/lib/libbsp/sparc/erc32/clock/ckinit.c index e1175909f8..9987de285b 100644 --- a/c/src/lib/libbsp/sparc/erc32/clock/ckinit.c +++ b/c/src/lib/libbsp/sparc/erc32/clock/ckinit.c @@ -49,11 +49,17 @@ extern int CLOCK_SPEED; uint32_t bsp_clock_nanoseconds_since_last_tick(void) { uint32_t clicks; + uint32_t usecs; clicks = ERC32_MEC.Real_Time_Clock_Counter; - return (uint32_t) - (rtems_configuration_get_microseconds_per_tick() - clicks) * 1000; + if ( ERC32_Is_interrupt_pending( ERC32_INTERRUPT_REAL_TIME_CLOCK ) ) { + clicks = ERC32_MEC.Real_Time_Clock_Counter; + usecs = (2*rtems_configuration_get_microseconds_per_tick() - clicks); + } else { + usecs = (rtems_configuration_get_microseconds_per_tick() - clicks); + } + return usecs * 1000; } #define Clock_driver_nanoseconds_since_last_tick \ |