begriffs open source - cmsis-freertos/blob - Source/portable/RVDS/ARM

1 /*

4

5 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

6

7 This file is part of the FreeRTOS distribution.

8

9 FreeRTOS is free software; you can redistribute it and/or modify it under

10 the terms of the GNU General Public License (version 2) as published by the

11 Free Software Foundation >>>> AND MODIFIED BY <<<< the FreeRTOS exception.

12

13 ***************************************************************************

14 >>! NOTE: The modification to the GPL is included to allow you to !<<

15 >>! distribute a combined work that includes FreeRTOS without being !<<

16 >>! obliged to provide the source code for proprietary components !<<

17 >>! outside of the FreeRTOS kernel. !<<

18 ***************************************************************************

19

20 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY

21 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

22 FOR A PARTICULAR PURPOSE. Full license text is available on the following

23 link: http://www.freertos.org/a00114.html

24

25 ***************************************************************************

26 * *

27 * FreeRTOS provides completely free yet professionally developed, *

28 * robust, strictly quality controlled, supported, and cross *

29 * platform software that is more than just the market leader, it *

30 * is the industry's de facto standard. *

31 * *

32 * Help yourself get started quickly while simultaneously helping *

33 * to support the FreeRTOS project by purchasing a FreeRTOS *

34 * tutorial book, reference manual, or both: *

35 * http://www.FreeRTOS.org/Documentation *

36 * *

37 ***************************************************************************

38

39 http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading

40 the FAQ page "My application does not run, what could be wrong?". Have you

41 defined configASSERT()?

42

43 http://www.FreeRTOS.org/support - In return for receiving this top quality

44 embedded software for free we request you assist our global community by

45 participating in the support forum.

46

47 http://www.FreeRTOS.org/training - Investing in training allows your team to

48 be as productive as possible as early as possible. Now you can receive

49 FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers

50 Ltd, and the world's leading authority on the world's leading RTOS.

51

52 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,

53 including FreeRTOS+Trace - an indispensable productivity tool, a DOS

54 compatible FAT file system, and our tiny thread aware UDP/IP stack.

55

56 http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.

57 Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.

58

59 http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High

60 Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS

61 licenses offer ticketed support, indemnification and commercial middleware.

62

63 http://www.SafeRTOS.com - High Integrity Systems also provide a safety

64 engineered and independently SIL3 certified version for use in safety and

65 mission critical applications that require provable dependability.

66

67 1 tab == 4 spaces!

68 */

69

70 #ifndef PORTMACRO_H

71 #define PORTMACRO_H

72

73 #ifdef __cplusplus

74 extern "C" {

75 #endif

76

77 /*-----------------------------------------------------------

78 * Port specific definitions.

79 *

80 * The settings in this file configure FreeRTOS correctly for the given hardware

81 * and compiler.

82 *

83 * These settings should not be altered.

84 *-----------------------------------------------------------

85 */

86

87 /* Type definitions. */

88 #define portCHAR char

89 #define portFLOAT float

90 #define portDOUBLE double

91 #define portLONG long

92 #define portSHORT short

93 #define portSTACK_TYPE uint32_t

94 #define portBASE_TYPE long

95

96 typedef portSTACK_TYPE StackType_t;

97 typedef long BaseType_t;

98 typedef unsigned long UBaseType_t;

99

100

101 #if( configUSE_16_BIT_TICKS == 1 )

102 typedef uint16_t TickType_t;

103 #define portMAX_DELAY ( TickType_t ) 0xffff

104 #else

105 typedef uint32_t TickType_t;

106 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL

107

108 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do

109 not need to be guarded with a critical section. */

110 #define portTICK_TYPE_IS_ATOMIC 1

111 #endif

112 /*-----------------------------------------------------------*/

113

114 /* Hardware specifics. */

115 #define portSTACK_GROWTH ( -1 )

116 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )

117 #define portBYTE_ALIGNMENT 8

118

119 /*-----------------------------------------------------------*/

120

121 /* Task utilities. */

122

123 /* Called at the end of an ISR that can cause a context switch. */

124 #define portEND_SWITCHING_ISR( xSwitchRequired )\

125 { \

126 extern uint32_t ulPortYieldRequired; \

127 \

128 if( xSwitchRequired != pdFALSE ) \

129 { \

130 ulPortYieldRequired = pdTRUE; \

131 } \

132 }

133

134 #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )

135 #define portYIELD() __asm( "SWI 0" );

136

137

138 /*-----------------------------------------------------------

139 * Critical section control

140 *----------------------------------------------------------*/

141

142 extern void vPortEnterCritical( void );

143 extern void vPortExitCritical( void );

144 extern uint32_t ulPortSetInterruptMask( void );

145 extern void vPortClearInterruptMask( uint32_t ulNewMaskValue );

146

147 /* These macros do not globally disable/enable interrupts. They do mask off

148 interrupts that have a priority below configMAX_API_CALL_INTERRUPT_PRIORITY. */

149 #define portENTER_CRITICAL() vPortEnterCritical();

150 #define portEXIT_CRITICAL() vPortExitCritical();

151 #define portDISABLE_INTERRUPTS() ulPortSetInterruptMask()

152 #define portENABLE_INTERRUPTS() vPortClearInterruptMask( 0 )

153 #define portSET_INTERRUPT_MASK_FROM_ISR() ulPortSetInterruptMask()

154 #define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) vPortClearInterruptMask(x)

155

156 /*-----------------------------------------------------------*/

157

158 /* Task function macros as described on the FreeRTOS.org WEB site. These are

159 not required for this port but included in case common demo code that uses these

160 macros is used. */

161 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )

162 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )

163

164 /* Prototype of the FreeRTOS tick handler. This must be installed as the

165 handler for whichever peripheral is used to generate the RTOS tick. */

166 void FreeRTOS_Tick_Handler( void );

167

168 /* Any task that uses the floating point unit MUST call vPortTaskUsesFPU()

169 before any floating point instructions are executed. */

170 void vPortTaskUsesFPU( void );

171 #define portTASK_USES_FLOATING_POINT() vPortTaskUsesFPU()

172

173 #define portLOWEST_INTERRUPT_PRIORITY ( ( ( uint32_t ) configUNIQUE_INTERRUPT_PRIORITIES ) - 1UL )

174 #define portLOWEST_USABLE_INTERRUPT_PRIORITY ( portLOWEST_INTERRUPT_PRIORITY - 1UL )

175

176 /* Architecture specific optimisations. */

177 #ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION

178 #define configUSE_PORT_OPTIMISED_TASK_SELECTION 1

179 #endif

180

181 #if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1

182

183 /* Store/clear the ready priorities in a bit map. */

184 #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )

185 #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )

186

187 /*-----------------------------------------------------------*/

188

189 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31 - __clz( uxReadyPriorities ) )

190

191 #endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */

192

193 #ifdef configASSERT

194 void vPortValidateInterruptPriority( void );

195 #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() vPortValidateInterruptPriority()

196 #endif

197

198 #define portNOP() __nop()

199

200 #ifdef __cplusplus

201 }

202 #endif

203

204 #endif /* PORTMACRO_H */

205