begriffs open source - cmsis-freertos/blob - Demo/ARM7_LPC2368

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

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

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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 /* Environment includes. */

71 #include <targets/LPC2368.h>

72

73 /* Scheduler includes. */

74 #include "FreeRTOS.h"

75 #include "task.h"

76 #include "queue.h"

77 #include "semphr.h"

78

79 /* Demo app includes. */

80 #include "BlockQ.h"

81 #include "death.h"

82 #include "integer.h"

83 #include "blocktim.h"

84 #include "portlcd.h"

85 #include "flash.h"

86 #include "partest.h"

87 #include "semtest.h"

88 #include "PollQ.h"

89

90 /* Demo application definitions. */

91 #define mainQUEUE_SIZE ( 3 )

92 #define mainCHECK_DELAY ( ( TickType_t ) 5000 / portTICK_PERIOD_MS )

93 #define mainBASIC_WEB_STACK_SIZE ( configMINIMAL_STACK_SIZE * 2 )

94

95 /* Task priorities. */

96 #define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 )

97 #define mainCHECK_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )

98 #define mainSEM_TEST_PRIORITY ( tskIDLE_PRIORITY + 1 )

99 #define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )

100 #define mainFLASH_PRIORITY ( tskIDLE_PRIORITY + 2 )

101 #define mainCREATOR_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )

102 #define mainINTEGER_TASK_PRIORITY ( tskIDLE_PRIORITY )

103

104

105 /*

106 * Checks the status of all the demo tasks then prints a message to the

107 * CrossStudio terminal IO windows. The message will be either PASS or FAIL

108 * depending on the status of the demo applications tasks. A FAIL status will

109 * be latched.

110 *

111 * Messages are not written directly to the terminal, but passed to vPrintTask

112 * via a queue.

113 */

114 static void vCheckTask( void *pvParameters );

115

116 /*

117 * The task that handles the uIP stack. All TCP/IP processing is performed in

118 * this task.

119 */

120 extern void vuIP_Task( void *pvParameters );

121

122 /*

123 * The LCD is written two by more than one task so is controlled by a

124 * 'gatekeeper' task. This is the only task that is actually permitted to

125 * access the LCD directly. Other tasks wanting to display a message send

126 * the message to the gatekeeper.

127 */

128 static void vLCDTask( void *pvParameters );

129

130 /* The queue used to send messages to the LCD task. */

131 QueueHandle_t xLCDQueue;

132

133 /*-----------------------------------------------------------*/

134

135 int main (void)

136 {

137 /* Setup the led's on the MCB2300 board */

138 vParTestInitialise();

139

140 /* Create the queue used by the LCD task. Messages for display on the LCD

141 are received via this queue. */

142 xLCDQueue = xQueueCreate( mainQUEUE_SIZE, sizeof( xLCDMessage ) );

143

144 /* Create the lwIP task. This uses the lwIP RTOS abstraction layer.*/

145 xTaskCreate( vuIP_Task, "uIP", mainBASIC_WEB_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );

146

147 /* Start the standard demo tasks - these serve no useful purpose other than

148 to demonstrate the FreeRTOS API being used and to test the port. */

149 vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );

150 vCreateBlockTimeTasks();

151 vStartLEDFlashTasks( mainFLASH_PRIORITY );

152 vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );

153 vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );

154 vStartIntegerMathTasks( mainINTEGER_TASK_PRIORITY );

155

156 /* Start the tasks defined within this file/specific to this demo. */

157 xTaskCreate( vCheckTask, "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );

158 xTaskCreate( vLCDTask, "LCD", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );

159

160 /* The suicide tasks must be created last as they need to know how many

161 tasks were running prior to their creation in order to ascertain whether

162 or not the correct/expected number of tasks are running at any given time. */

163 vCreateSuicidalTasks( mainCREATOR_TASK_PRIORITY );

164

165 /* Start the scheduler. */

166 vTaskStartScheduler();

167

168 /* Will only get here if there was insufficient memory to create the idle

169 task. */

170 return 0;

171 }

172 /*-----------------------------------------------------------*/

173

174 static void vCheckTask( void *pvParameters )

175 {

176 portBASE_TYPE xErrorOccurred = pdFALSE;

177 TickType_t xLastExecutionTime;

178 unsigned portBASE_TYPE uxColumn = 0;

179 xLCDMessage xMessage;

180

181 xLastExecutionTime = xTaskGetTickCount();

182

183 xMessage.xColumn = 0;

184 xMessage.pcMessage = "PASS";

185

186 for( ;; )

187 {

188 /* Perform this check every mainCHECK_DELAY milliseconds. */

189 vTaskDelayUntil( &xLastExecutionTime, mainCHECK_DELAY );

190

191 /* Has an error been found in any task? */

192

193 if( xAreBlockingQueuesStillRunning() != pdTRUE )

194 {

195 xErrorOccurred = pdTRUE;

196 }

197

198 if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )

199 {

200 xErrorOccurred = pdTRUE;

201 }

202

203 if( xAreSemaphoreTasksStillRunning() != pdTRUE )

204 {

205 xErrorOccurred = pdTRUE;

206 }

207

208 if( xArePollingQueuesStillRunning() != pdTRUE )

209 {

210 xErrorOccurred = pdTRUE;

211 }

212

213 if( xIsCreateTaskStillRunning() != pdTRUE )

214 {

215 xErrorOccurred = pdTRUE;

216 }

217

218 if( xAreIntegerMathsTaskStillRunning() != pdTRUE )

219 {

220 xErrorOccurred = pdTRUE;

221 }

222

223 LCD_cls();

224 xMessage.xColumn++;

225 LCD_gotoxy( ( uxColumn & 0x07 ) + 1, ( uxColumn & 0x01 ) + 1 );

226

227 if( xErrorOccurred == pdTRUE )

228 {

229 xMessage.pcMessage = "FAIL";

230 }

231

232 /* Send the message to the LCD gatekeeper for display. */

233 xQueueSend( xLCDQueue, &xMessage, portMAX_DELAY );

234 }

235 }

236 /*-----------------------------------------------------------*/

237

238 void vLCDTask( void *pvParameters )

239 {

240 xLCDMessage xMessage;

241

242 /* Initialise the LCD and display a startup message. */

243 LCD_init();

244 LCD_cur_off();

245 LCD_cls();

246 LCD_gotoxy( 1, 1 );

247 LCD_puts( ( signed char * ) "www.FreeRTOS.org" );

248

249 for( ;; )

250 {

251 /* Wait for a message to arrive that requires displaying. */

252 while( xQueueReceive( xLCDQueue, &xMessage, portMAX_DELAY ) != pdPASS );

253

254 /* Display the message. Print each message to a different position. */

255 LCD_cls();

256 LCD_gotoxy( ( xMessage.xColumn & 0x07 ) + 1, ( xMessage.xColumn & 0x01 ) + 1 );

257 LCD_puts( xMessage.pcMessage );

258 }

259

260 }

261 /*-----------------------------------------------------------*/

262

263 /* Keep the compiler quiet. */

264 #include <stdio.h>

265 int __putchar( int c )

266 {

267 return EOF;

268 }