2 FreeRTOS V8.0.0 - Copyright (C) 2014 Real Time Engineers Ltd.
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5 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 ***************************************************************************
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9 * FreeRTOS provides completely free yet professionally developed, *
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10 * robust, strictly quality controlled, supported, and cross *
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11 * platform software that has become a de facto standard. *
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13 * Help yourself get started quickly and support the FreeRTOS *
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14 * project by purchasing a FreeRTOS tutorial book, reference *
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15 * manual, or both from: http://www.FreeRTOS.org/Documentation *
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19 ***************************************************************************
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21 This file is part of the FreeRTOS distribution.
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23 FreeRTOS is free software; you can redistribute it and/or modify it under
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24 the terms of the GNU General Public License (version 2) as published by the
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25 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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27 >>! NOTE: The modification to the GPL is included to allow you to distribute
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28 >>! a combined work that includes FreeRTOS without being obliged to provide
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29 >>! the source code for proprietary components outside of the FreeRTOS
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32 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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33 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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34 FOR A PARTICULAR PURPOSE. Full license text is available from the following
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35 link: http://www.freertos.org/a00114.html
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39 ***************************************************************************
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41 * Having a problem? Start by reading the FAQ "My application does *
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42 * not run, what could be wrong?" *
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44 * http://www.FreeRTOS.org/FAQHelp.html *
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46 ***************************************************************************
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48 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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49 license and Real Time Engineers Ltd. contact details.
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51 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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52 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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53 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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55 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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56 Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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57 licenses offer ticketed support, indemnification and middleware.
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59 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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60 engineered and independently SIL3 certified version for use in safety and
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61 mission critical applications that require provable dependability.
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66 /* Scheduler includes. */
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67 #include "FreeRTOS.h"
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70 /* Demo includes. */
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71 #include "IntQueueTimer.h"
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72 #include "IntQueue.h"
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74 /* Hardware includes. */
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75 #include "lpc11xx.h"
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77 /* The two timer frequencies. */
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78 #define tmrTIMER_2_FREQUENCY ( 2000UL )
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79 #define tmrTIMER_3_FREQUENCY ( 2001UL )
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81 /* The priorities for the two timers. Note that a priority of 0 is the highest
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82 possible on Cortex-M devices. */
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83 #define tmrMAX_PRIORITY ( 0UL )
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84 #define trmSECOND_HIGHEST_PRIORITY ( tmrMAX_PRIORITY + 1 )
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86 void vInitialiseTimerForIntQueueTest( void )
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88 /* Enable AHB clock for GPIO and 16-bit timers. */
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89 LPC_SYSCON->SYSAHBCLKCTRL |= ( 7 << 6 );
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91 /* Interrupt and reset on MR0 match. */
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92 LPC_TMR16B0->MCR = 0x03;
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93 LPC_TMR16B1->MCR = 0x03;
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95 /* Configure the frequency of the interrupt generated by MR0 matches. */
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96 LPC_TMR16B0->MR0 = SystemCoreClock / tmrTIMER_2_FREQUENCY;
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97 LPC_TMR16B1->MR0 = SystemCoreClock / tmrTIMER_3_FREQUENCY;
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99 /* Don't generate interrupts until the scheduler has been started.
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100 Interrupts will be automatically enabled when the first task starts
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102 taskDISABLE_INTERRUPTS();
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104 /* Set the timer interrupts to be above the kernel. The interrupts are
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105 assigned different priorities so they nest with each other. */
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106 NVIC_SetPriority( TIMER_16_0_IRQn, trmSECOND_HIGHEST_PRIORITY );
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107 NVIC_SetPriority( TIMER_16_1_IRQn, tmrMAX_PRIORITY );
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109 /* Enable the timer interrupts. */
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110 NVIC_EnableIRQ( TIMER_16_0_IRQn );
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111 NVIC_EnableIRQ( TIMER_16_1_IRQn );
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113 /* Start the timers. */
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114 LPC_TMR16B0->TCR = 0x01;
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115 LPC_TMR16B1->TCR = 0x01;
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117 /*-----------------------------------------------------------*/
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119 void TIMER16_0_IRQHandler(void)
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121 /* Clear the interrupt. */
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122 LPC_TMR16B0->IR = LPC_TMR16B0->IR;
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124 /* Call the standard demo int queue timer function for this first timer. */
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125 portEND_SWITCHING_ISR( xFirstTimerHandler() );
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127 /*-----------------------------------------------------------*/
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129 void TIMER16_1_IRQHandler(void)
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131 /* Clear the interrupt. */
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132 LPC_TMR16B1->IR = LPC_TMR16B1->IR;
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134 /* Call the standard demo int queue timer function for this second timer. */
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135 portEND_SWITCHING_ISR( xSecondTimerHandler() );
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137 /*-----------------------------------------------------------*/
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