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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-02-12 10:31:38 +0100 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-02-14 10:28:29 +0100 |
commit | 24bf11eca11947d961cc9bb5f7d92dabff169e93 (patch) | |
tree | b28f3aa8a21df91e8feaf324613aa76460559837 /c/src/lib/libbsp/arm/lpc32xx/startup/bspstart.c | |
parent | bsps/arm: Fix Cortex-A9 MPCore nanoseconds handler (diff) | |
download | rtems-24bf11eca11947d961cc9bb5f7d92dabff169e93.tar.bz2 |
score: Add CPU counter support
Add a CPU counter interface to allow access to a free-running counter.
It is useful to measure short time intervals. This can be used for
example to enable profiling of critical low-level functions.
Add two busy wait functions rtems_counter_delay_ticks() and
rtems_counter_delay_nanoseconds() implemented via the CPU counter.
Diffstat (limited to 'c/src/lib/libbsp/arm/lpc32xx/startup/bspstart.c')
-rw-r--r-- | c/src/lib/libbsp/arm/lpc32xx/startup/bspstart.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/c/src/lib/libbsp/arm/lpc32xx/startup/bspstart.c b/c/src/lib/libbsp/arm/lpc32xx/startup/bspstart.c index 2a8bcc76e1..e2f80db535 100644 --- a/c/src/lib/libbsp/arm/lpc32xx/startup/bspstart.c +++ b/c/src/lib/libbsp/arm/lpc32xx/startup/bspstart.c @@ -7,7 +7,7 @@ */ /* - * Copyright (c) 2009-2012 embedded brains GmbH. All rights reserved. + * Copyright (c) 2009-2014 embedded brains GmbH. All rights reserved. * * embedded brains GmbH * Obere Lagerstr. 30 @@ -20,14 +20,19 @@ * http://www.rtems.com/license/LICENSE. */ +#include <rtems/counter.h> + #include <bsp.h> #include <bsp/bootcard.h> #include <bsp/irq-generic.h> -#include <bsp/irq.h> -#include <bsp/linker-symbols.h> -#include <bsp/lpc32xx.h> + +CPU_Counter_ticks _CPU_Counter_read(void) +{ + return lpc32xx_timer(); +} void bsp_start(void) { + rtems_counter_initialize_converter(LPC32XX_PERIPH_CLK); bsp_interrupt_initialize(); } |