2 FreeRTOS.org V5.1.2 - 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
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2 of the License, or
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9 (at your option) any later version.
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11 FreeRTOS.org is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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16 You should have received a copy of the GNU General Public License
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17 along with FreeRTOS.org; if not, write to the Free Software
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18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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20 A special exception to the GPL can be applied should you wish to distribute
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21 a combined work that includes FreeRTOS.org, without being obliged to provide
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22 the source code for any proprietary components. See the licensing section
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23 of http://www.FreeRTOS.org for full details of how and when the exception
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26 ***************************************************************************
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27 ***************************************************************************
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29 * Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation *
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31 * This is a concise, step by step, 'hands on' guide that describes both *
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32 * general multitasking concepts and FreeRTOS specifics. It presents and *
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33 * explains numerous examples that are written using the FreeRTOS API. *
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34 * Full source code for all the examples is provided in an accompanying *
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37 ***************************************************************************
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38 ***************************************************************************
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40 Please ensure to read the configuration and relevant port sections of the
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41 online documentation.
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43 http://www.FreeRTOS.org - Documentation, latest information, license and
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46 http://www.SafeRTOS.com - A version that is certified for use in safety
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49 http://www.OpenRTOS.com - Commercial support, development, porting,
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50 licensing and training services.
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53 #include "FreeRTOS.h"
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54 #include "IntQueueTimer.h"
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55 #include "IntQueue.h"
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57 #define timerINTERRUPT1_FREQUENCY ( 2000UL )
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58 #define timerINTERRUPT2_FREQUENCY ( 2001UL )
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59 #define timerPRESCALE_VALUE ( 2 )
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61 void vInitialiseTimerForIntQueueTest( void )
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63 const unsigned portSHORT usCompareMatchValue1 = ( unsigned portSHORT ) ( ( configCPU_CLOCK_HZ / timerPRESCALE_VALUE ) / timerINTERRUPT1_FREQUENCY );
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64 const unsigned portSHORT usCompareMatchValue2 = ( unsigned portSHORT ) ( ( configCPU_CLOCK_HZ / timerPRESCALE_VALUE ) / timerINTERRUPT2_FREQUENCY );
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66 /* Configure interrupt priority and level and unmask interrupt. */
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67 MCF_INTC0_ICR56 = ( ( configMAX_SYSCALL_INTERRUPT_PRIORITY - 1 ) << 3 );
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68 MCF_INTC0_IMRH &= ~( MCF_INTC_IMRH_INT_MASK56 );
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70 MCF_PIT1_PCSR |= MCF_PIT_PCSR_PIF;
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71 MCF_PIT1_PCSR = ( MCF_PIT_PCSR_PIE | MCF_PIT_PCSR_RLD | MCF_PIT_PCSR_EN );
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72 MCF_PIT1_PMR = usCompareMatchValue1;
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74 MCF_INTC0_ICR57 = ( configMAX_SYSCALL_INTERRUPT_PRIORITY << 3 );
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75 MCF_INTC0_IMRH &= ~( MCF_INTC_IMRH_INT_MASK57 );
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77 MCF_PIT2_PCSR |= MCF_PIT_PCSR_PIF;
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78 MCF_PIT2_PCSR = ( MCF_PIT_PCSR_PIE | MCF_PIT_PCSR_RLD | MCF_PIT_PCSR_EN );
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79 MCF_PIT2_PMR = usCompareMatchValue2;
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81 /*-----------------------------------------------------------*/
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83 void __attribute__ ((interrupt)) __cs3_isr_interrupt_120( void )
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85 MCF_PIT1_PCSR |= MCF_PIT_PCSR_PIF;
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86 portEND_SWITCHING_ISR( xFirstTimerHandler() );
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88 /*-----------------------------------------------------------*/
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90 void __attribute__ ((interrupt)) __cs3_isr_interrupt_121( void )
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92 MCF_PIT2_PCSR |= MCF_PIT_PCSR_PIF;
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93 portEND_SWITCHING_ISR( xSecondTimerHandler() );
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