http://www.OpenRTOS.com - Commercial support, development, porting,\r
licensing and training services.\r
*/\r
+\r
+/*\r
+ * The documentation page for this demo available on http://www.FreeRTOS.org\r
+ * documents the hardware configuration required to run this demo. It also\r
+ * provides more information on the expected demo application behaviour.\r
+ *\r
+ * main() creates all the demo application tasks, then starts the scheduler.\r
+ * A lot of the created tasks are from the pool of "standard demo" tasks. The\r
+ * web documentation provides more details of the standard demo tasks, which\r
+ * provide no particular functionality but do provide good examples of how to\r
+ * use the FreeRTOS API.\r
+ *\r
+ * In addition to the standard demo tasks, the following tasks, interrupts and\r
+ * tests are defined and/or created within this file:\r
+ *\r
+ * "LCD" task - The LCD task is a 'gatekeeper' task. It is the only task that\r
+ * is permitted to access the LCD and therefore ensures access to the LCD is\r
+ * always serialised and there are no mutual exclusion issues. When a task or\r
+ * an interrupt wants to write to the LCD, it does not access the LCD directly\r
+ * but instead sends the message to the LCD task. The LCD task then performs\r
+ * the actual LCD output. This mechanism also allows interrupts to, in effect,\r
+ * write to the LCD by sending messages to the LCD task.\r
+ *\r
+ * The LCD task is also a demonstration of a 'controller' task design pattern.\r
+ * Some tasks do not actually send a string to the LCD task directly, but\r
+ * instead send a command that is interpreted by the LCD task. In a normal\r
+ * application these commands can be control values or set points, in this\r
+ * simple example the commands just result in messages being displayed on the\r
+ * LCD.\r
+ *\r
+ * "Button Poll" task - This task polls the state of the 'up' key on the\r
+ * joystick input device. It uses the vTaskDelay() API function to control\r
+ * the poll rate to ensure debouncing is not necessary and that the task does\r
+ * not use all the available CPU processing time.\r
+ *\r
+ * Button Interrupt and run time stats display - The select button on the\r
+ * joystick input device is configured to generate an external interrupt. The\r
+ * handler for this interrupt sends a message to LCD task, which interprets the\r
+ * message to mean, firstly write a message to the LCD, and secondly, generate\r
+ * a table of run time statistics. The run time statistics are displayed as a\r
+ * table that contains information on how much processing time each task has\r
+ * been allocated since the application started to execute. This information\r
+ * is provided both as an absolute time, and as a percentage of the total run\r
+ * time. The information is displayed in the terminal IO window of the IAR\r
+ * embedded workbench. The online documentation for this demo shows a screen\r
+ * shot demonstrating where the run time stats can be viewed.\r
+ *\r
+ * Idle Hook - The idle hook is a function that is called on each iteration of\r
+ * the idle task. In this case it is used to place the processor into a low\r
+ * power mode. Note however that this application is implemented using standard\r
+ * components, and is therefore not optimised for low power operation. Lower\r
+ * power consumption would be achieved by converting polling tasks into event\r
+ * driven tasks, and slowing the tick interrupt frequency.\r
+ *\r
+ * "Check" function called from the tick hook - The tick hook is called during\r
+ * each tick interrupt. It is called from an interrupt context so must execute\r
+ * quickly, not attempt to block, and not call any FreeRTOS API functions that\r
+ * do not end in "FromISR". In this case the tick hook executes a 'check'\r
+ * function. This only executes every five seconds. Its main function is to\r
+ * check that all the standard demo tasks are still operational. Each time it\r
+ * executes it sends a status code to the LCD task. The LCD task interprets the\r
+ * code and displays an appropriate message - which will be PASS if no tasks\r
+ * have reported any errors, or a message stating which task has reported an\r
+ * error.\r
+ *\r
+ * "Reg test" tasks - These fill the registers with known values, then check\r
+ * that each register still contains its expected value. Each task uses\r
+ * different values. The tasks run with very low priority so get preempted\r
+ * very frequently. A check variable is incremented on each iteration of the\r
+ * test loop. A register containing an unexpected value is indicative of an\r
+ * error in the context switching mechanism and will result in a branch to a\r
+ * null loop - which in turn will prevent the check variable from incrementing\r
+ * any further and allow the check task (described a above) to determine that an\r
+ * error has occurred. The nature of the reg test tasks necessitates that they\r
+ * are written in assembly code.\r
+ *\r
+ * *NOTE 2* vApplicationSetupTimerInterrupt() is called by the kernel to let\r
+ * the application set up a timer to generate the tick interrupt. In this\r
+ * example a timer A0 is used for this purpose.\r
+ *\r
+*/\r
+\r
+/* Standard includes. */\r
#include <stdio.h>\r
\r
+/* FreeRTOS includes. */\r
#include "FreeRTOS.h"\r
#include "task.h"\r
#include "queue.h"\r
\r
+/* Hardware includes. */\r
#include "msp430.h"\r
#include "hal_MSP-EXP430F5438.h"\r
\r
-/* The rate at which mainCHECK_LED will toggle when all the tasks are running\r
-without error. Controlled by the check task as described at the top of this\r
-file. */\r
-#define mainNO_ERROR_CYCLE_TIME ( 5000 / portTICK_RATE_MS )\r
-\r
-/* The rate at which mainCHECK_LED will toggle when an error has been reported\r
-by at least one task. Controlled by the check task as described at the top of\r
-this file. */\r
-#define mainERROR_CYCLE_TIME ( 200 / portTICK_RATE_MS )\r
+/* Standard demo includes. */\r
+#include "ParTest.h"\r
+#include "dynamic.h"\r
+#include "comtest2.h"\r
+#include "GenQTest.h"\r
\r
/* Codes sent within messages to the LCD task so the LCD task can interpret\r
exactly what the message it just received was. These are sent in the\r
#define mainMESSAGE_STATUS ( 3 )\r
\r
/* When the cMessageID member of the message sent to the LCD task is\r
-mainMESSAGE_STATUS then these definitions are sent in the cMessageValue member\r
+mainMESSAGE_STATUS then these definitions are sent in the ulMessageValue member\r
of the same message and indicate what the status actually is. */\r
#define mainERROR_DYNAMIC_TASKS ( pdPASS + 1 )\r
#define mainERROR_COM_TEST ( pdPASS + 2 )\r
#define mainERROR_GEN_QUEUE_TEST ( pdPASS + 3 )\r
+#define mainERROR_REG_TEST ( pdPASS + 4 )\r
\r
/* The length of the queue (the number of items the queue can hold) that is used\r
to send messages from tasks and interrupts the the LCD task. */\r
#define mainQUEUE_LENGTH ( 5 )\r
\r
+/* Priorities used by the test and demo tasks. */\r
#define mainLCD_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )\r
+#define mainCOM_TEST_PRIORITY ( tskIDLE_PRIORITY + 2 )\r
+#define mainGENERIC_QUEUE_TEST_PRIORITY ( tskIDLE_PRIORITY )\r
\r
+/* The LED used by the comtest tasks. See the comtest.c file for more\r
+information. */\r
+#define mainCOM_TEST_LED ( 1 )\r
+\r
+/* The baud rate used by the comtest tasks described at the top of this file. */\r
+#define mainCOM_TEST_BAUD_RATE ( 38400 )\r
+\r
+/* The maximum number of lines of text that can be displayed on the LCD. */\r
+#define mainMAX_LCD_LINES ( 8 )\r
/*-----------------------------------------------------------*/\r
\r
+/*\r
+ * The reg test tasks as described at the top of this file.\r
+ */\r
extern void vRegTest1Task( void *pvParameters );\r
extern void vRegTest2Task( void *pvParameters );\r
-static void prvCheckTask( void *pvParameters );\r
+\r
+/*\r
+ * Configures clocks, LCD, port pints, etc. necessary to execute this demo.\r
+ */\r
static void prvSetupHardware( void );\r
-static void prvTerminalIOTask( void *pvParameters );\r
+\r
+/*\r
+ * Definition of the LCD/controller task described in the comments at the top\r
+ * of this file.\r
+ */\r
+static void prvLCDTask( void *pvParameters );\r
+\r
+/*\r
+ * Definition of the button poll task described in the comments at the top of\r
+ * this file.\r
+ */\r
static void prvButtonPollTask( void *pvParameters );\r
+\r
+/*\r
+ * Converts a status message value into an appropriate string for display on\r
+ * the LCD. The string is written to pcBuffer.\r
+ */\r
static void prvGenerateStatusMessage( char *pcBuffer, long lStatusValue );\r
\r
/*-----------------------------------------------------------*/\r
\r
+/* Variables that are incremented on each iteration of the reg test tasks -\r
+provided the tasks have not reported any errors. The check task inspects these\r
+variables to ensure they are still incrementing as expected. If a variable\r
+stops incrementing then it is likely that its associate task has stalled. */\r
volatile unsigned short usRegTest1Counter = 0, usRegTest2Counter = 0;\r
\r
/* The handle of the queue used to send messages from tasks and interrupts to\r
task. */\r
typedef struct\r
{\r
- char cMessageID; /* << States what the message is. */\r
- char cMessageValue; /* << States the message value (can be an integer, string pointer, etc. depending on the value of cMessageID. */\r
+ char cMessageID; /* << States what the message is. */\r
+ unsigned long ulMessageValue; /* << States the message value (can be an integer, string pointer, etc. depending on the value of cMessageID). */\r
} xQueueMessage;\r
+\r
/*-----------------------------------------------------------*/\r
\r
+/* The linker script tests the FreeRTOS ports use of 20bit addresses by\r
+locating all code in high memory. The following pragma ensures that main\r
+remains in low memory. The ISR_CODE segment is used for convenience as ISR\r
+functions are always placed in low memory. */\r
+#pragma location="ISR_CODE"\r
void main( void )\r
{\r
+ /* Configure the peripherals used by this demo application. This includes\r
+ configuring the joystick input select button to generate interrupts. */\r
prvSetupHardware();\r
- \r
+\r
/* Create the queue used by tasks and interrupts to send strings to the LCD\r
task. */\r
xLCDQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( xQueueMessage ) );\r
- \r
+\r
+ /* If the queue could not be created then don't create any tasks that might\r
+ attempt to use the queue. */\r
if( xLCDQueue != NULL )\r
{\r
/* Add the created queue to the queue registry so it can be viewed in\r
the IAR FreeRTOS state viewer plug-in. */\r
vQueueAddToRegistry( xLCDQueue, "LCDQueue" );\r
\r
- /* Create the terminal IO and button poll tasks, as described at the top\r
- of this file. */\r
- xTaskCreate( prvTerminalIOTask, ( signed char * ) "LCD", configMINIMAL_STACK_SIZE, NULL, mainLCD_TASK_PRIORITY, NULL );\r
- xTaskCreate( prvButtonPollTask, ( signed char * ) "ButPoll", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
-\r
- xTaskCreate( vRegTest1Task, "RegTest1", configMINIMAL_STACK_SIZE, NULL, 0, NULL );\r
- xTaskCreate( vRegTest2Task, "RegTest2", configMINIMAL_STACK_SIZE, NULL, 0, NULL );\r
- xTaskCreate( prvCheckTask, "Check", configMINIMAL_STACK_SIZE, NULL, configMAX_PRIORITIES - 1, NULL );\r
+ /* Create the standard demo tasks. */\r
+ vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainCOM_TEST_BAUD_RATE, mainCOM_TEST_LED );\r
+ vStartDynamicPriorityTasks();\r
+ vStartGenericQueueTasks( mainGENERIC_QUEUE_TEST_PRIORITY );\r
+ \r
+ /* Create the LCD, button poll and register test tasks, as described at\r
+ the top of this file. */\r
+ xTaskCreate( prvLCDTask, ( signed char * ) "LCD", configMINIMAL_STACK_SIZE * 2, NULL, mainLCD_TASK_PRIORITY, NULL );\r
+ xTaskCreate( prvButtonPollTask, ( signed char * ) "BPoll", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );\r
+ xTaskCreate( vRegTest1Task, ( signed char * ) "Reg1", configMINIMAL_STACK_SIZE, NULL, 0, NULL );\r
+ xTaskCreate( vRegTest2Task, ( signed char * ) "Reg2", configMINIMAL_STACK_SIZE, NULL, 0, NULL );\r
+\r
+ /* Start the scheduler. */\r
vTaskStartScheduler();\r
}\r
+ \r
+ /* If all is well then this line will never be reached. If it is reached\r
+ then it is likely that there was insufficient (FreeRTOS) heap memory space\r
+ to create the idle task. This may have been trapped by the malloc() failed\r
+ hook function, if one is configured. */ \r
for( ;; );\r
}\r
/*-----------------------------------------------------------*/\r
\r
-static void prvTerminalIOTask( void *pvParameters )\r
+static void prvLCDTask( void *pvParameters )\r
{\r
xQueueMessage xReceivedMessage;\r
\r
stack, which is too small to hold such a variable. The stack size is configured\r
when the task is created. */\r
static char cBuffer[ 512 ];\r
+unsigned char ucLine = 1;\r
+\r
\r
/* This function is the only function that uses printf(). If printf() is\r
used from any other function then some sort of mutual exclusion on stdout\r
has been received. */\r
xQueueReceive( xLCDQueue, &xReceivedMessage, portMAX_DELAY );\r
\r
+ /* Clear the LCD if no room remains for any more text output. */\r
+ if( ucLine > mainMAX_LCD_LINES )\r
+ {\r
+ halLcdClearScreen();\r
+ ucLine = 0;\r
+ }\r
+ \r
/* What is this message? What does it contain? */\r
switch( xReceivedMessage.cMessageID )\r
{\r
informed this task that the up\r
button on the joystick input has\r
been pressed or released. */\r
- sprintf( cBuffer, "Button up = %d", xReceivedMessage.cMessageValue );\r
+ sprintf( cBuffer, "Button up = %d", ( int ) xReceivedMessage.ulMessageValue );\r
break;\r
\r
case mainMESSAGE_BUTTON_SEL : /* The select button interrupt\r
the terminal IO window in the IAR\r
embedded workbench. */\r
printf( "\nTask\t Abs Time\t %%Time\n*****************************************" );\r
-// vTaskGetRunTimeStats( ( signed char * ) cBuffer );\r
-// printf( cBuffer );\r
+ fflush( stdout );\r
+ vTaskGetRunTimeStats( ( signed char * ) cBuffer );\r
+ printf( cBuffer );\r
+ fflush( stdout );\r
+ \r
+ /* Also print out a message to\r
+ the LCD - in this case the\r
+ pointer to the string to print\r
+ is sent directly in the\r
+ ulMessageValue member of the\r
+ message. This just demonstrates\r
+ a different communication\r
+ technique. */\r
+ sprintf( cBuffer, "%s", ( char * ) xReceivedMessage.ulMessageValue );\r
break;\r
\r
case mainMESSAGE_STATUS : /* The tick interrupt hook\r
task of the system status.\r
Generate a string in accordance\r
with the status value. */\r
- prvGenerateStatusMessage( cBuffer, xReceivedMessage.cMessageValue );\r
+ prvGenerateStatusMessage( cBuffer, xReceivedMessage.ulMessageValue );\r
break;\r
\r
default : sprintf( cBuffer, "Unknown message" );\r
}\r
\r
/* Output the message that was placed into the cBuffer array within the\r
- switch statement above. */\r
- printf( "%s", cBuffer );\r
+ switch statement above, then move onto the next line ready for the next\r
+ message to arrive on the queue. */\r
+ halLcdPrintLine( cBuffer, ucLine, OVERWRITE_TEXT );\r
+ ucLine++;\r
}\r
}\r
/*-----------------------------------------------------------*/\r
string for output onto the LCD. */\r
switch( lStatusValue )\r
{\r
- case pdPASS : sprintf( pcBuffer, "Task status = PASS" );\r
+ case pdPASS : sprintf( pcBuffer, "Status = PASS" );\r
break;\r
- case mainERROR_DYNAMIC_TASKS : sprintf( pcBuffer, "Error: Dynamic tasks" );\r
+ case mainERROR_DYNAMIC_TASKS : sprintf( pcBuffer, "Err: Dynamic tsks" );\r
break;\r
- case mainERROR_COM_TEST : sprintf( pcBuffer, "Err: loop connected?" ); /* Error in COM test - is the Loopback connector connected? */ \r
+ case mainERROR_COM_TEST : sprintf( pcBuffer, "Err: COM test" );\r
break;\r
case mainERROR_GEN_QUEUE_TEST : sprintf( pcBuffer, "Error: Gen Q test" );\r
break;\r
+ case mainERROR_REG_TEST : sprintf( pcBuffer, "Error: Reg test" );\r
+ break;\r
default : sprintf( pcBuffer, "Unknown status" );\r
break;\r
}\r
{\r
/* Check the button state. */\r
ucState = ( halButtonsPressed() & BUTTON_UP );\r
+ \r
+ if( ucState != 0 )\r
+ {\r
+ /* The button was pressed. */\r
+ ucState = pdTRUE;\r
+ }\r
+ \r
if( ucState != ucLastState )\r
{\r
/* The state has changed, send a message to the LCD task. */\r
xMessage.cMessageID = mainMESSAGE_BUTTON_UP;\r
- xMessage.cMessageValue = ucState;\r
+ xMessage.ulMessageValue = ( unsigned long ) ucState;\r
ucLastState = ucState;\r
xQueueSend( xLCDQueue, &xMessage, portMAX_DELAY );\r
}\r
\r
static void prvSetupHardware( void )\r
{\r
+/* Convert a Hz value to a KHz value, as required by the Init_FLL_Settle()\r
+function. */\r
+unsigned long ulCPU_Clock_KHz = ( configCPU_CLOCK_HZ / 1000UL );\r
+\r
halBoardInit();\r
+\r
+ LFXT_Start( XT1DRIVE_0 );\r
+ Init_FLL_Settle( ( unsigned short ) ulCPU_Clock_KHz, 488 );\r
+\r
halButtonsInit( BUTTON_ALL );\r
halButtonsInterruptEnable( BUTTON_SELECT );\r
- LFXT_Start (XT1DRIVE_0);\r
- Init_FLL_Settle( 25000, 488 );\r
+\r
+ /* Initialise the LCD, but note that the backlight is not used as the\r
+ library function uses timer A0 to modulate the backlight, and this file\r
+ defines vApplicationSetupTimerInterrupt() to also use timer A0 to generate\r
+ the tick interrupt. If the backlight is required, then change either the\r
+ halLCD library or vApplicationSetupTimerInterrupt() to use a different\r
+ timer. Timer A1 is used for the run time stats time base6. */\r
+ halLcdInit();\r
+ halLcdSetContrast( 100 );\r
+ halLcdClearScreen();\r
+ \r
+ halLcdPrintLine( " www.FreeRTOS.org", 0, OVERWRITE_TEXT );\r
}\r
/*-----------------------------------------------------------*/\r
\r
-static void prvCheckTask( void *pvParameters )\r
+void vApplicationTickHook( void )\r
{\r
-volatile unsigned short usLastRegTest1Counter = 0, usLastRegTest2Counter = 0;\r
-portTickType xNextWakeTime, xCycleFrequency = mainNO_ERROR_CYCLE_TIME;\r
-const char *pcStatusMessage = "OK";\r
+static unsigned short usLastRegTest1Counter = 0, usLastRegTest2Counter = 0;\r
+static unsigned long ulCounter = 0;\r
+static const unsigned long ulCheckFrequency = 5000UL / portTICK_RATE_MS;\r
+portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;\r
\r
- /* Initialise xNextWakeTime - this only needs to be done once. */\r
- xNextWakeTime = xTaskGetTickCount();\r
+/* Define the status message that is sent to the LCD task. By default the\r
+status is PASS. */\r
+static xQueueMessage xStatusMessage = { mainMESSAGE_STATUS, pdPASS };\r
\r
- for( ;; )\r
+ /* This is called from within the tick interrupt and performs the 'check'\r
+ functionality as described in the comments at the top of this file.\r
+\r
+ Is it time to perform the 'check' functionality again? */\r
+ ulCounter++;\r
+ if( ulCounter >= ulCheckFrequency )\r
{\r
- /* Place this task in the blocked state until it is time to run again. */\r
- vTaskDelayUntil( &xNextWakeTime, xCycleFrequency );\r
+ /* See if the standard demo tasks are executing as expected, changing\r
+ the message that is sent to the LCD task from PASS to an error code if\r
+ any tasks set reports an error. */\r
+ if( xAreComTestTasksStillRunning() != pdPASS )\r
+ {\r
+ xStatusMessage.ulMessageValue = mainERROR_COM_TEST;\r
+ }\r
+\r
+ if( xAreDynamicPriorityTasksStillRunning() != pdPASS )\r
+ {\r
+ xStatusMessage.ulMessageValue = mainERROR_DYNAMIC_TASKS;\r
+ }\r
+ \r
+ if( xAreGenericQueueTasksStillRunning() != pdPASS )\r
+ {\r
+ xStatusMessage.ulMessageValue = mainERROR_GEN_QUEUE_TEST;\r
+ } \r
\r
- /* Check the reg test tasks are still cycling. They will stop incrementing\r
- their loop counters if they encounter an error. */\r
+ /* Check the reg test tasks are still cycling. They will stop\r
+ incrementing their loop counters if they encounter an error. */\r
if( usRegTest1Counter == usLastRegTest1Counter )\r
{\r
- pcStatusMessage = "Error: RegTest1";\r
+ xStatusMessage.ulMessageValue = mainERROR_REG_TEST;\r
}\r
\r
if( usRegTest2Counter == usLastRegTest2Counter )\r
{\r
- pcStatusMessage = "Error: RegTest2";\r
+ xStatusMessage.ulMessageValue = mainERROR_REG_TEST;\r
}\r
\r
usLastRegTest1Counter = usRegTest1Counter;\r
usLastRegTest2Counter = usRegTest2Counter;\r
\r
- printf( "%s, tick count = %u\n", pcStatusMessage, ( unsigned int ) xTaskGetTickCount() );\r
- fflush( stdout );\r
+ /* As this is the tick hook the lHigherPriorityTaskWoken parameter is not\r
+ needed (a context switch is going to be performed anyway), but it must\r
+ still be provided. */\r
+ xQueueSendFromISR( xLCDQueue, &xStatusMessage, &xHigherPriorityTaskWoken );\r
+ ulCounter = 0;\r
+ }\r
+\r
+ /* Just periodically toggle an LED to show that the tick interrupt is\r
+ running. Note that this access LED_PORT_OUT in a non-atomic way, so tasks\r
+ that access the same port must do so from a critical section. */\r
+ if( ( ulCounter & 0xff ) == 0 )\r
+ {\r
+ if( ( LED_PORT_OUT & LED_1 ) == 0 )\r
+ {\r
+ LED_PORT_OUT |= LED_1;\r
+ }\r
+ else\r
+ {\r
+ LED_PORT_OUT &= ~LED_1;\r
+ }\r
}\r
}\r
/*-----------------------------------------------------------*/\r
\r
+#pragma vector=PORT2_VECTOR\r
+__interrupt static void prvSelectButtonInterrupt(void)\r
+{\r
+/* Define the message sent to the LCD task from this interrupt. */\r
+static const xQueueMessage xMessage = { mainMESSAGE_BUTTON_SEL, ( unsigned long ) "Select Interrupt" };\r
+portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;\r
+\r
+ /* This is the interrupt handler for the joystick select button input.\r
+ The button has been pushed, write a message to the LCD via the LCD task. */\r
+ xQueueSendFromISR( xLCDQueue, &xMessage, &xHigherPriorityTaskWoken );\r
+\r
+ P2IFG = 0;\r
+ \r
+ /* If writing to xLCDQueue caused a task to unblock, and the unblocked task\r
+ has a priority equal to or above the task that this interrupt interrupted,\r
+ then lHigherPriorityTaskWoken will have been set to pdTRUE internally within\r
+ xQueuesendFromISR(), and portEND_SWITCHING_ISR() will ensure that this\r
+ interrupt returns directly to the higher priority unblocked task. */\r
+ portYIELD_FROM_ISR( xHigherPriorityTaskWoken );\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+/* The MSP430X port uses this callback function to configure its tick interrupt.\r
+This allows the application to choose the tick interrupt source.\r
+configTICK_VECTOR must also be set in FreeRTOSConfig.h to the correct\r
+interrupt vector for the chosen tick interrupt source. This implementation of\r
+vApplicationSetupTimerInterrupt() generates the tick from timer A0, so in this\r
+case configTICK_VECTOR is set to TIMER0_A0_VECTOR. */\r
void vApplicationSetupTimerInterrupt( void )\r
{\r
const unsigned short usACLK_Frequency_Hz = 32768;\r
/* Ensure the timer is stopped. */\r
TA0CTL = 0;\r
\r
- /* Run the timer of the ACLK. */\r
+ /* Run the timer from the ACLK. */\r
TA0CTL = TASSEL_1;\r
\r
/* Clear everything to start with. */\r
}\r
/*-----------------------------------------------------------*/\r
\r
+void vApplicationIdleHook( void )\r
+{\r
+ /* Called on each iteration of the idle task. In this case the idle task\r
+ just enters a low(ish) power mode. */\r
+ __bis_SR_register( LPM1_bits + GIE );\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
void vApplicationMallocFailedHook( void )\r
{\r
+ /* Called if a call to pvPortMalloc() fails because there is insufficient\r
+ free memory available in the FreeRTOS heap. pvPortMalloc() is called\r
+ internally by FreeRTOS API functions that create tasks, queues or\r
+ semaphores. */\r
+ taskDISABLE_INTERRUPTS();\r
for( ;; );\r
}\r
/*-----------------------------------------------------------*/\r
( void ) pxTask;\r
( void ) pcTaskName;\r
\r
+ /* Run time stack overflow checking is performed if\r
+ configconfigCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook\r
+ function is called if a stack overflow is detected. */\r
+ taskDISABLE_INTERRUPTS();\r
for( ;; );\r
}\r
/*-----------------------------------------------------------*/\r
\r
-void vApplicationIdleHook( void )\r
-{\r
- __bis_SR_register( LPM3_bits + GIE );\r
-}\r
-\r
-\r
-\r