sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Reduce debug output; calibrate DM320 timer

Browse Source 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@372 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2007-11-06 16:17:50 +00:00
parent 37637344e4
commit 9048998778
1 changed files with 60 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

86
arch/arm/src/common/up_initialize.c
View File

@ -1,4 +1,4 @@
/************************************************************ /****************************************************************************
* common/up_initialize.c * common/up_initialize.c
* *
* Copyright (C) 2007 Gregory Nutt. All rights reserved. * Copyright (C) 2007 Gregory Nutt. All rights reserved.
@ -31,11 +31,11 @@
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE. * POSSIBILITY OF SUCH DAMAGE.
* *
************************************************************/ ****************************************************************************/
/************************************************************ /****************************************************************************
* Included Files * Included Files
************************************************************/ ****************************************************************************/
#include <nuttx/config.h> #include <nuttx/config.h>
#include <sys/types.h> #include <sys/types.h>
@ -45,37 +45,67 @@
#include "up_arch.h" #include "up_arch.h"
#include "up_internal.h" #include "up_internal.h"
/************************************************************ /****************************************************************************
* Definitions
****************************************************************************/
/* Define to enable timing loop calibration */
#undef CONFIG_ARM_CALIBRATION
/****************************************************************************
* Private Types * Private Types
************************************************************/ ****************************************************************************/
/************************************************************ /****************************************************************************
* Private Function Prototypes * Private Functions
************************************************************/ ****************************************************************************/
/************************************************************ /****************************************************************************
* Global Functions * Name: up_calibratedelay
************************************************************/ *
* Description:
* Delay loops are provided for short timing loops. This function, if
* enabled, will just wait for 100 seconds. Using a stopwatch, you can
* can then determine if the timing loops are properly calibrated.
*
****************************************************************************/
/************************************************************ #if defined(CONFIG_ARM_CALIBRATION) & defined(CONFIG_DEBUG)
static void up_calibratedelay(void)
{
int i;
lldbg("Beginning 100s delay\n");
for (i = 0; i < 100; i++)
{
up_mdelay(1000);
}
lldbg("End 100s delay\n");
}
#else
# define up_calibratedelay()
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_initialize * Name: up_initialize
* *
* Description: * Description:
* up_initialize will be called once during OS * up_initialize will be called once during OS initialization after the
* initialization after the basic OS services have been * basic OS services have been initialized. The architecture specific
* initialized. The architecture specific details of * details of initializing the OS will be handled here. Such things as
* initializing the OS will be handled here. Such things as * setting up interrupt service routines, starting the clock, and
* setting up interrupt service routines, starting the * registering device drivers are some of the things that are different
* clock, and registering device drivers are some of the * for each processor and hardware platform.
* things that are different for each processor and hardware
* platform.
* *
* up_initialize is called after the OS initialized but * up_initialize is called after the OS initialized but before the user
* before the init process has been started and before the * initialization logic has been started and before the libraries have
* libraries have been initialized. OS services and driver * been initialized. OS services and driver services are available.
* services are available.
* *
************************************************************/ ****************************************************************************/
void up_initialize(void) void up_initialize(void)
{ {
@ -83,6 +113,10 @@ void up_initialize(void)
current_regs = NULL; current_regs = NULL;
/* Calibrate the timing loop */
up_calibratedelay();
/* Initialize the interrupt subsystem */ /* Initialize the interrupt subsystem */
up_irqinitialize(); up_irqinitialize();