/*\r
- FreeRTOS.org V4.7.0 - Copyright (C) 2003-2007 Richard Barry.\r
-\r
- This file is part of the FreeRTOS.org distribution.\r
-\r
- FreeRTOS.org is free software; you can redistribute it and/or modify\r
- it under the terms of the GNU General Public License as published by\r
- the Free Software Foundation; either version 2 of the License, or\r
- (at your option) any later version.\r
-\r
- FreeRTOS.org is distributed in the hope that it will be useful,\r
- but WITHOUT ANY WARRANTY; without even the implied warranty of\r
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
- GNU General Public License for more details.\r
-\r
- You should have received a copy of the GNU General Public License\r
- along with FreeRTOS.org; if not, write to the Free Software\r
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r
-\r
- A special exception to the GPL can be applied should you wish to distribute\r
- a combined work that includes FreeRTOS.org, without being obliged to provide\r
- the source code for any proprietary components. See the licensing section\r
- of http://www.FreeRTOS.org for full details of how and when the exception\r
- can be applied.\r
-\r
- ***************************************************************************\r
- See http://www.FreeRTOS.org for documentation, latest information, license\r
- and contact details. Please ensure to read the configuration and relevant\r
- port sections of the online documentation.\r
-\r
- Also see http://www.SafeRTOS.com a version that has been certified for use\r
- in safety critical systems, plus commercial licensing, development and\r
- support options.\r
- ***************************************************************************\r
+ FreeRTOS V7.0.1 - Copyright (C) 2011 Real Time Engineers Ltd.\r
+ \r
+\r
+ ***************************************************************************\r
+ * *\r
+ * FreeRTOS tutorial books are available in pdf and paperback. *\r
+ * Complete, revised, and edited pdf reference manuals are also *\r
+ * available. *\r
+ * *\r
+ * Purchasing FreeRTOS documentation will not only help you, by *\r
+ * ensuring you get running as quickly as possible and with an *\r
+ * in-depth knowledge of how to use FreeRTOS, it will also help *\r
+ * the FreeRTOS project to continue with its mission of providing *\r
+ * professional grade, cross platform, de facto standard solutions *\r
+ * for microcontrollers - completely free of charge! *\r
+ * *\r
+ * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *\r
+ * *\r
+ * Thank you for using FreeRTOS, and thank you for your support! *\r
+ * *\r
+ ***************************************************************************\r
+\r
+\r
+ This file is part of the FreeRTOS distribution.\r
+\r
+ FreeRTOS is free software; you can redistribute it and/or modify it under\r
+ the terms of the GNU General Public License (version 2) as published by the\r
+ Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
+ >>>NOTE<<< The modification to the GPL is included to allow you to\r
+ distribute a combined work that includes FreeRTOS without being obliged to\r
+ provide the source code for proprietary components outside of the FreeRTOS\r
+ kernel. FreeRTOS is distributed in the hope that it will be useful, but\r
+ WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\r
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for\r
+ more details. You should have received a copy of the GNU General Public\r
+ License and the FreeRTOS license exception along with FreeRTOS; if not it\r
+ can be viewed here: http://www.freertos.org/a00114.html and also obtained\r
+ by writing to Richard Barry, contact details for whom are available on the\r
+ FreeRTOS WEB site.\r
+\r
+ 1 tab == 4 spaces!\r
+\r
+ http://www.FreeRTOS.org - Documentation, latest information, license and\r
+ contact details.\r
+\r
+ http://www.SafeRTOS.com - A version that is certified for use in safety\r
+ critical systems.\r
+\r
+ http://www.OpenRTOS.com - Commercial support, development, porting,\r
+ licensing and training services.\r
*/\r
\r
/* High speed timer test as described in main.c. */\r
#include "interrupt.h"\r
#include "sysctl.h"\r
#include "lmi_timer.h"\r
+#include "hw_timer.h"\r
\r
/* The set frequency of the interrupt. Deviations from this are measured as\r
the jitter. */\r
\r
/* Misc defines. */\r
#define timerMAX_32BIT_VALUE ( 0xffffffffUL )\r
-#define timerTIMER_1_COUNT_VALUE ( * ( ( unsigned long * ) ( TIMER1_BASE + 0x48 ) ) )\r
+#define timerTIMER_1_COUNT_VALUE ( * ( ( volatile unsigned long * ) ( ( unsigned portLONG ) TIMER1_BASE + 0x48UL ) ) )\r
\r
/*-----------------------------------------------------------*/\r
\r
void Timer0IntHandler( void );\r
\r
/* Stores the value of the maximum recorded jitter between interrupts. */\r
-unsigned portLONG ulMaxJitter = 0;\r
+volatile unsigned portLONG ulMaxJitter = 0;\r
\r
/*-----------------------------------------------------------*/\r
\r
-void vSetupTimer( void )\r
+void vSetupHighFrequencyTimer( void )\r
{\r
unsigned long ulFrequency;\r
\r
/* Just used to measure time. */\r
TimerLoadSet(TIMER1_BASE, TIMER_A, timerMAX_32BIT_VALUE );\r
\r
+ /* Ensure interrupts do not start until the scheduler is running. */\r
+ portDISABLE_INTERRUPTS();\r
+ \r
/* The rate at which the timer will interrupt. */\r
ulFrequency = configCPU_CLOCK_HZ / timerINTERRUPT_FREQUENCY; \r
TimerLoadSet( TIMER0_BASE, TIMER_A, ulFrequency );\r
\r
void Timer0IntHandler( void )\r
{\r
-unsigned portLONG ulDifference, ulCurrentCount;\r
-static portLONG ulMaxDifference = 0, ulLastCount = 0;\r
+unsigned portLONG ulDifference;\r
+volatile unsigned portLONG ulCurrentCount;\r
+static unsigned portLONG ulMaxDifference = 0, ulLastCount = 0;\r
\r
/* We use the timer 1 counter value to measure the clock cycles between\r
the timer 0 interrupts. */\r
ulCurrentCount = timerTIMER_1_COUNT_VALUE;\r
\r
+ TimerIntClear( TIMER0_BASE, TIMER_TIMA_TIMEOUT );\r
+\r
if( ulCurrentCount < ulLastCount )\r
{ \r
/* How many times has timer 1 counted since the last interrupt? */\r
}\r
\r
ulLastCount = ulCurrentCount;\r
-\r
- TimerIntClear( TIMER0_BASE, TIMER_TIMA_TIMEOUT );\r
}\r
\r
\r
\r
\r
\r
+\r
+\r
projects / freertos / blobdiff