2 FreeRTOS.org V5.2.0 - Copyright (C) 2003-2009 Richard Barry.
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4 This file is part of the FreeRTOS.org distribution.
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6 FreeRTOS.org is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License (version 2) as published
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8 by the Free Software Foundation and modified by the FreeRTOS exception.
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10 FreeRTOS.org is distributed in the hope that it will be useful, but WITHOUT
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11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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15 You should have received a copy of the GNU General Public License along
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16 with FreeRTOS.org; if not, write to the Free Software Foundation, Inc., 59
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17 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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19 A special exception to the GPL is included to allow you to distribute a
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20 combined work that includes FreeRTOS.org without being obliged to provide
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21 the source code for any proprietary components. See the licensing section
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22 of http://www.FreeRTOS.org for full details.
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25 ***************************************************************************
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27 * Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation *
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29 * This is a concise, step by step, 'hands on' guide that describes both *
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30 * general multitasking concepts and FreeRTOS specifics. It presents and *
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31 * explains numerous examples that are written using the FreeRTOS API. *
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32 * Full source code for all the examples is provided in an accompanying *
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35 ***************************************************************************
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39 Please ensure to read the configuration and relevant port sections of the
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40 online documentation.
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42 http://www.FreeRTOS.org - Documentation, latest information, license and
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45 http://www.SafeRTOS.com - A version that is certified for use in safety
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48 http://www.OpenRTOS.com - Commercial support, development, porting,
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49 licensing and training services.
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52 #include "FreeRTOS.h"
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53 #include "IntQueueTimer.h"
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54 #include "IntQueue.h"
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56 #define timerINTERRUPT1_FREQUENCY ( 2000UL )
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57 #define timerINTERRUPT2_FREQUENCY ( 2001UL )
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58 #define timerPRESCALE_VALUE ( 2 )
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60 void vInitialiseTimerForIntQueueTest( void )
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62 const unsigned portSHORT usCompareMatchValue1 = ( unsigned portSHORT ) ( ( configCPU_CLOCK_HZ / timerPRESCALE_VALUE ) / timerINTERRUPT1_FREQUENCY );
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63 const unsigned portSHORT usCompareMatchValue2 = ( unsigned portSHORT ) ( ( configCPU_CLOCK_HZ / timerPRESCALE_VALUE ) / timerINTERRUPT2_FREQUENCY );
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65 /* Configure interrupt priority and level and unmask interrupt. */
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66 MCF_INTC0_ICR56 = ( ( configMAX_SYSCALL_INTERRUPT_PRIORITY - 1 ) << 3 );
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67 MCF_INTC0_IMRH &= ~( MCF_INTC_IMRH_INT_MASK56 );
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69 MCF_PIT1_PCSR |= MCF_PIT_PCSR_PIF;
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70 MCF_PIT1_PCSR = ( MCF_PIT_PCSR_PIE | MCF_PIT_PCSR_RLD | MCF_PIT_PCSR_EN );
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71 MCF_PIT1_PMR = usCompareMatchValue1;
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73 MCF_INTC0_ICR57 = ( configMAX_SYSCALL_INTERRUPT_PRIORITY << 3 );
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74 MCF_INTC0_IMRH &= ~( MCF_INTC_IMRH_INT_MASK57 );
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76 MCF_PIT2_PCSR |= MCF_PIT_PCSR_PIF;
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77 MCF_PIT2_PCSR = ( MCF_PIT_PCSR_PIE | MCF_PIT_PCSR_RLD | MCF_PIT_PCSR_EN );
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78 MCF_PIT2_PMR = usCompareMatchValue2;
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80 /*-----------------------------------------------------------*/
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82 void __attribute__ ((interrupt)) __cs3_isr_interrupt_120( void )
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84 MCF_PIT1_PCSR |= MCF_PIT_PCSR_PIF;
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85 portEND_SWITCHING_ISR( xFirstTimerHandler() );
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87 /*-----------------------------------------------------------*/
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89 void __attribute__ ((interrupt)) __cs3_isr_interrupt_121( void )
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91 MCF_PIT2_PCSR |= MCF_PIT_PCSR_PIF;
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92 portEND_SWITCHING_ISR( xSecondTimerHandler() );
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