2 FreeRTOS V8.2.0 - Copyright (C) 2015 Real Time Engineers Ltd.
\r
5 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
\r
7 This file is part of the FreeRTOS distribution.
\r
9 FreeRTOS is free software; you can redistribute it and/or modify it under
\r
10 the terms of the GNU General Public License (version 2) as published by the
\r
11 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
\r
13 ***************************************************************************
\r
14 >>! NOTE: The modification to the GPL is included to allow you to !<<
\r
15 >>! distribute a combined work that includes FreeRTOS without being !<<
\r
16 >>! obliged to provide the source code for proprietary components !<<
\r
17 >>! outside of the FreeRTOS kernel. !<<
\r
18 ***************************************************************************
\r
20 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
\r
21 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
\r
22 FOR A PARTICULAR PURPOSE. Full license text is available on the following
\r
23 link: http://www.freertos.org/a00114.html
\r
25 ***************************************************************************
\r
27 * FreeRTOS provides completely free yet professionally developed, *
\r
28 * robust, strictly quality controlled, supported, and cross *
\r
29 * platform software that is more than just the market leader, it *
\r
30 * is the industry's de facto standard. *
\r
32 * Help yourself get started quickly while simultaneously helping *
\r
33 * to support the FreeRTOS project by purchasing a FreeRTOS *
\r
34 * tutorial book, reference manual, or both: *
\r
35 * http://www.FreeRTOS.org/Documentation *
\r
37 ***************************************************************************
\r
39 http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
\r
40 the FAQ page "My application does not run, what could be wrong?". Have you
\r
41 defined configASSERT()?
\r
43 http://www.FreeRTOS.org/support - In return for receiving this top quality
\r
44 embedded software for free we request you assist our global community by
\r
45 participating in the support forum.
\r
47 http://www.FreeRTOS.org/training - Investing in training allows your team to
\r
48 be as productive as possible as early as possible. Now you can receive
\r
49 FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
\r
50 Ltd, and the world's leading authority on the world's leading RTOS.
\r
52 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
\r
53 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
\r
54 compatible FAT file system, and our tiny thread aware UDP/IP stack.
\r
56 http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
\r
57 Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
\r
59 http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
\r
60 Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
\r
61 licenses offer ticketed support, indemnification and commercial middleware.
\r
63 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
\r
64 engineered and independently SIL3 certified version for use in safety and
\r
65 mission critical applications that require provable dependability.
\r
72 * Creates all the demo application tasks, then starts the scheduler. The WEB
\r
73 * documentation provides more details of the standard demo application tasks
\r
74 * (which just exist to test the kernel port and provide an example of how to use
\r
75 * each FreeRTOS API function).
\r
77 * In addition to the standard demo tasks, the following tasks and tests are
\r
78 * defined and/or created within this file:
\r
80 * "Check" hook - This only executes fully every five seconds from the tick
\r
81 * hook. Its main function is to check that all the standard demo tasks are
\r
82 * still operational. The status can be viewed using on the Task Stats page
\r
83 * served by the WEB server.
\r
85 * "uIP" task - This is the task that handles the uIP stack. All TCP/IP
\r
86 * processing is performed in this task.
\r
88 * "USB" task - Enumerates the USB device as a CDC class, then echoes back all
\r
89 * received characters with a configurable offset (for example, if the offset
\r
90 * is 1 and 'A' is received then 'B' will be sent back). A dumb terminal such
\r
91 * as Hyperterminal can be used to talk to the USB task.
\r
94 /* Standard includes. */
\r
97 /* Scheduler includes. */
\r
98 #include "FreeRTOS.h"
\r
101 /* Demo app includes. */
\r
102 #include "BlockQ.h"
\r
103 #include "integer.h"
\r
104 #include "blocktim.h"
\r
106 #include "partest.h"
\r
107 #include "semtest.h"
\r
109 #include "GenQTest.h"
\r
111 #include "recmutex.h"
\r
113 /*-----------------------------------------------------------*/
\r
115 /* The time between cycles of the 'check' functionality (defined within the
\r
117 #define mainCHECK_DELAY ( ( TickType_t ) 5000 / portTICK_PERIOD_MS )
\r
119 /* Task priorities. */
\r
120 #define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 )
\r
121 #define mainSEM_TEST_PRIORITY ( tskIDLE_PRIORITY + 1 )
\r
122 #define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )
\r
123 #define mainUIP_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
\r
124 #define mainINTEGER_TASK_PRIORITY ( tskIDLE_PRIORITY )
\r
125 #define mainGEN_QUEUE_TASK_PRIORITY ( tskIDLE_PRIORITY )
\r
126 #define mainFLASH_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 )
\r
128 /* The WEB server has a larger stack as it utilises stack hungry string
\r
129 handling library calls. */
\r
130 #define mainBASIC_WEB_STACK_SIZE ( configMINIMAL_STACK_SIZE * 4 )
\r
132 /* The message displayed by the WEB server when all tasks are executing
\r
133 without an error being reported. */
\r
134 #define mainPASS_STATUS_MESSAGE "All tasks are executing without error."
\r
136 /* Bit definitions. */
\r
137 #define PCONP_PCGPIO 0x00008000
\r
138 #define PLLFEED_FEED1 0x000000AA
\r
139 #define PLLFEED_FEED2 0x00000055
\r
140 /*-----------------------------------------------------------*/
\r
143 * Configure the hardware for the demo.
\r
145 static void prvSetupHardware( void );
\r
148 * The task that handles the uIP stack. All TCP/IP processing is performed in
\r
151 extern void vuIP_Task( void *pvParameters );
\r
154 * The task that handles the USB stack.
\r
156 extern void vUSBTask( void *pvParameters );
\r
159 * Simply returns the current status message for display on served WEB pages.
\r
161 char *pcGetTaskStatusMessage( void );
\r
163 /*-----------------------------------------------------------*/
\r
165 /* Holds the status message displayed by the WEB server. */
\r
166 static char *pcStatusMessage = mainPASS_STATUS_MESSAGE;
\r
168 /*-----------------------------------------------------------*/
\r
172 char cIPAddress[ 16 ]; /* Enough space for "xxx.xxx.xxx.xxx\0". */
\r
174 /* Configure the hardware for use by this demo. */
\r
175 prvSetupHardware();
\r
177 /* Start the standard demo tasks. These are just here to exercise the
\r
178 kernel port and provide examples of how the FreeRTOS API can be used. */
\r
179 vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
\r
180 vCreateBlockTimeTasks();
\r
181 vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
\r
182 vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
\r
183 vStartIntegerMathTasks( mainINTEGER_TASK_PRIORITY );
\r
184 vStartGenericQueueTasks( mainGEN_QUEUE_TASK_PRIORITY );
\r
185 vStartQueuePeekTasks();
\r
186 vStartRecursiveMutexTasks();
\r
187 vStartLEDFlashTasks( mainFLASH_TASK_PRIORITY );
\r
189 /* Create the USB task. */
\r
190 xTaskCreate( vUSBTask, "USB", configMINIMAL_STACK_SIZE, ( void * ) NULL, tskIDLE_PRIORITY, NULL );
\r
192 /* Display the IP address, then create the uIP task. The WEB server runs
\r
193 in this task. --- Due to tool changes since this demo was created the LCD
\r
195 LCDdriver_initialisation();
\r
196 LCD_PrintString( 5, 10, "FreeRTOS.org", 14, COLOR_GREEN);
\r
197 sprintf( cIPAddress, "%d.%d.%d.%d", configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
\r
198 LCD_PrintString( 5, 30, cIPAddress, 14, COLOR_RED);
\r
199 xTaskCreate( vuIP_Task, "uIP", mainBASIC_WEB_STACK_SIZE, ( void * ) NULL, mainUIP_TASK_PRIORITY, NULL ); */
\r
201 /* Start the scheduler. */
\r
202 vTaskStartScheduler();
\r
204 /* Will only get here if there was insufficient memory to create the idle
\r
205 task. The idle task is created within vTaskStartScheduler(). */
\r
208 /*-----------------------------------------------------------*/
\r
210 void vApplicationTickHook( void )
\r
212 static unsigned long ulTicksSinceLastDisplay = 0;
\r
214 /* Called from every tick interrupt as described in the comments at the top
\r
217 Have enough ticks passed to make it time to perform our health status
\r
219 ulTicksSinceLastDisplay++;
\r
220 if( ulTicksSinceLastDisplay >= mainCHECK_DELAY )
\r
222 /* Reset the counter so these checks run again in mainCHECK_DELAY
\r
224 ulTicksSinceLastDisplay = 0;
\r
226 /* Has an error been found in any task? */
\r
227 if( xAreGenericQueueTasksStillRunning() != pdTRUE )
\r
229 pcStatusMessage = "An error has been detected in the Generic Queue test/demo.";
\r
231 else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
\r
233 pcStatusMessage = "An error has been detected in the Peek Queue test/demo.";
\r
235 else if( xAreBlockingQueuesStillRunning() != pdTRUE )
\r
237 pcStatusMessage = "An error has been detected in the Block Queue test/demo.";
\r
239 else if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
\r
241 pcStatusMessage = "An error has been detected in the Block Time test/demo.";
\r
243 else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
\r
245 pcStatusMessage = "An error has been detected in the Semaphore test/demo.";
\r
247 else if( xArePollingQueuesStillRunning() != pdTRUE )
\r
249 pcStatusMessage = "An error has been detected in the Poll Queue test/demo.";
\r
251 else if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
\r
253 pcStatusMessage = "An error has been detected in the Int Math test/demo.";
\r
255 else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
\r
257 pcStatusMessage = "An error has been detected in the Mutex test/demo.";
\r
261 /*-----------------------------------------------------------*/
\r
263 char *pcGetTaskStatusMessage( void )
\r
265 /* Not bothered about a critical section here. */
\r
266 return pcStatusMessage;
\r
268 /*-----------------------------------------------------------*/
\r
270 void prvSetupHardware( void )
\r
272 /* Disable peripherals power. */
\r
275 /* Enable GPIO power. */
\r
276 LPC_SC->PCONP = PCONP_PCGPIO;
\r
278 /* Disable TPIU. */
\r
279 LPC_PINCON->PINSEL10 = 0;
\r
281 if ( LPC_SC->PLL0STAT & ( 1 << 25 ) )
\r
283 /* Enable PLL, disconnected. */
\r
284 LPC_SC->PLL0CON = 1;
\r
285 LPC_SC->PLL0FEED = PLLFEED_FEED1;
\r
286 LPC_SC->PLL0FEED = PLLFEED_FEED2;
\r
289 /* Disable PLL, disconnected. */
\r
290 LPC_SC->PLL0CON = 0;
\r
291 LPC_SC->PLL0FEED = PLLFEED_FEED1;
\r
292 LPC_SC->PLL0FEED = PLLFEED_FEED2;
\r
294 /* Enable main OSC. */
\r
295 LPC_SC->SCS |= 0x20;
\r
296 while( !( LPC_SC->SCS & 0x40 ) );
\r
298 /* select main OSC, 12MHz, as the PLL clock source. */
\r
299 LPC_SC->CLKSRCSEL = 0x1;
\r
301 LPC_SC->PLL0CFG = 0x20031;
\r
302 LPC_SC->PLL0FEED = PLLFEED_FEED1;
\r
303 LPC_SC->PLL0FEED = PLLFEED_FEED2;
\r
305 /* Enable PLL, disconnected. */
\r
306 LPC_SC->PLL0CON = 1;
\r
307 LPC_SC->PLL0FEED = PLLFEED_FEED1;
\r
308 LPC_SC->PLL0FEED = PLLFEED_FEED2;
\r
310 /* Set clock divider. */
\r
311 LPC_SC->CCLKCFG = 0x03;
\r
313 /* Configure flash accelerator. */
\r
314 LPC_SC->FLASHCFG = 0x403a;
\r
316 /* Check lock bit status. */
\r
317 while( ( ( LPC_SC->PLL0STAT & ( 1 << 26 ) ) == 0 ) );
\r
319 /* Enable and connect. */
\r
320 LPC_SC->PLL0CON = 3;
\r
321 LPC_SC->PLL0FEED = PLLFEED_FEED1;
\r
322 LPC_SC->PLL0FEED = PLLFEED_FEED2;
\r
323 while( ( ( LPC_SC->PLL0STAT & ( 1 << 25 ) ) == 0 ) );
\r
328 /* Configure the clock for the USB. */
\r
329 if( LPC_SC->PLL1STAT & ( 1 << 9 ) )
\r
331 /* Enable PLL, disconnected. */
\r
332 LPC_SC->PLL1CON = 1;
\r
333 LPC_SC->PLL1FEED = PLLFEED_FEED1;
\r
334 LPC_SC->PLL1FEED = PLLFEED_FEED2;
\r
337 /* Disable PLL, disconnected. */
\r
338 LPC_SC->PLL1CON = 0;
\r
339 LPC_SC->PLL1FEED = PLLFEED_FEED1;
\r
340 LPC_SC->PLL1FEED = PLLFEED_FEED2;
\r
342 LPC_SC->PLL1CFG = 0x23;
\r
343 LPC_SC->PLL1FEED = PLLFEED_FEED1;
\r
344 LPC_SC->PLL1FEED = PLLFEED_FEED2;
\r
346 /* Enable PLL, disconnected. */
\r
347 LPC_SC->PLL1CON = 1;
\r
348 LPC_SC->PLL1FEED = PLLFEED_FEED1;
\r
349 LPC_SC->PLL1FEED = PLLFEED_FEED2;
\r
350 while( ( ( LPC_SC->PLL1STAT & ( 1 << 10 ) ) == 0 ) );
\r
352 /* Enable and connect. */
\r
353 LPC_SC->PLL1CON = 3;
\r
354 LPC_SC->PLL1FEED = PLLFEED_FEED1;
\r
355 LPC_SC->PLL1FEED = PLLFEED_FEED2;
\r
356 while( ( ( LPC_SC->PLL1STAT & ( 1 << 9 ) ) == 0 ) );
\r
358 /* Setup the peripheral bus to be the same as the CPU output (100 MHz). */
\r
359 LPC_SC->PCLKSEL0 = 0x05555555;
\r
361 /* Configure the LEDs. */
\r
362 vParTestInitialise();
\r
364 /*-----------------------------------------------------------*/
\r
366 void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
\r
368 /* This function will get called if a task overflows its stack. */
\r
371 ( void ) pcTaskName;
\r
375 /*-----------------------------------------------------------*/
\r
377 void vConfigureTimerForRunTimeStats( void )
\r
379 const unsigned long TCR_COUNT_RESET = 2, CTCR_CTM_TIMER = 0x00, TCR_COUNT_ENABLE = 0x01;
\r
381 /* This function configures a timer that is used as the time base when
\r
382 collecting run time statistical information - basically the percentage
\r
383 of CPU time that each task is utilising. It is called automatically when
\r
384 the scheduler is started (assuming configGENERATE_RUN_TIME_STATS is set
\r
387 /* Power up and feed the timer. */
\r
388 LPC_SC->PCONP |= 0x02UL;
\r
389 LPC_SC->PCLKSEL0 = (LPC_SC->PCLKSEL0 & (~(0x3<<2))) | (0x01 << 2);
\r
391 /* Reset Timer 0 */
\r
392 LPC_TIM0->TCR = TCR_COUNT_RESET;
\r
394 /* Just count up. */
\r
395 LPC_TIM0->CTCR = CTCR_CTM_TIMER;
\r
397 /* Prescale to a frequency that is good enough to get a decent resolution,
\r
398 but not too fast so as to overflow all the time. */
\r
399 LPC_TIM0->PR = ( configCPU_CLOCK_HZ / 10000UL ) - 1UL;
\r
401 /* Start the counter. */
\r
402 LPC_TIM0->TCR = TCR_COUNT_ENABLE;
\r
404 /*-----------------------------------------------------------*/
\r