2 FreeRTOS V4.0.1 - Copyright (C) 2003-2006 Richard Barry.
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4 This file is part of the FreeRTOS distribution.
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6 FreeRTOS 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 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; 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, 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 See http://www.FreeRTOS.org for documentation, latest information, license
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28 and contact details. Please ensure to read the configuration and relevant
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29 port sections of the online documentation.
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30 ***************************************************************************
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36 /*-----------------------------------------------------------
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37 * Port specific definitions.
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39 * The settings in this file configure FreeRTOS correctly for the
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40 * given hardware and compiler.
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42 * These settings should not be altered.
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43 *-----------------------------------------------------------
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46 /* Type definitions. */
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47 #define portCHAR char
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48 #define portFLOAT float
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49 #define portDOUBLE double
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50 #define portLONG long
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51 #define portSHORT int
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52 #define portSTACK_TYPE unsigned portSHORT
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53 #define portBASE_TYPE portSHORT
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55 #if( configUSE_16_BIT_TICKS == 1 )
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56 typedef unsigned portSHORT portTickType;
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57 #define portMAX_DELAY ( portTickType ) 0xffff
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59 typedef unsigned portLONG portTickType;
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60 #define portMAX_DELAY ( portTickType ) 0xffffffff
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62 /*-----------------------------------------------------------*/
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64 /* Interrupt control macros. */
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65 #define portDISABLE_INTERRUPTS() _DINT();
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66 #define portENABLE_INTERRUPTS() _EINT();
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67 /*-----------------------------------------------------------*/
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69 /* Critical section control macros. */
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70 #define portNO_CRITICAL_SECTION_NESTING ( ( unsigned portSHORT ) 0 )
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72 #define portENTER_CRITICAL() \
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74 extern volatile unsigned portSHORT usCriticalNesting; \
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76 portDISABLE_INTERRUPTS(); \
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78 /* Now interrupts are disabled ulCriticalNesting can be accessed */ \
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79 /* directly. Increment ulCriticalNesting to keep a count of how many */ \
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80 /* times portENTER_CRITICAL() has been called. */ \
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81 usCriticalNesting++; \
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84 #define portEXIT_CRITICAL() \
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86 extern volatile unsigned portSHORT usCriticalNesting; \
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88 if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING ) \
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90 /* Decrement the nesting count as we are leaving a critical section. */ \
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91 usCriticalNesting--; \
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93 /* If the nesting level has reached zero then interrupts should be */ \
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95 if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING ) \
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97 portENABLE_INTERRUPTS(); \
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101 /*-----------------------------------------------------------*/
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103 /* Task utilities. */
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106 * Manual context switch called by portYIELD or taskYIELD.
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108 extern void vPortYield( void );
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110 #define portYIELD() vPortYield()
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111 /*-----------------------------------------------------------*/
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113 #define portENTER_SWITCHING_ISR()
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114 #define portEXIT_SWITCHING_ISR( SwitchRequired ) \
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116 extern unsigned portCHAR ucReschedule; \
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117 if( SwitchRequired ) \
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119 ucReschedule = 1; \
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123 /* Hardwware specifics. */
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124 #define portBYTE_ALIGNMENT 2
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125 #define portSTACK_GROWTH ( -1 )
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126 #define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
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127 /*-----------------------------------------------------------*/
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129 /* Task function macros as described on the FreeRTOS.org WEB site. */
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130 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
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131 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) __toplevel
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133 /* Compiler specifics. */
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138 /* Just used by the demo application to indicate which form of interrupt
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139 service routine should be used. See the online port documentation for more
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141 #define MSP_ROWLEY_MP_PORT
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143 #endif /* PORTMACRO_H */
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