2 FreeRTOS V8.1.2 - Copyright (C) 2014 Real Time Engineers Ltd.
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5 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 ***************************************************************************
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9 * FreeRTOS provides completely free yet professionally developed, *
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10 * robust, strictly quality controlled, supported, and cross *
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11 * platform software that has become a de facto standard. *
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13 * Help yourself get started quickly and support the FreeRTOS *
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14 * project by purchasing a FreeRTOS tutorial book, reference *
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15 * manual, or both from: http://www.FreeRTOS.org/Documentation *
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19 ***************************************************************************
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21 This file is part of the FreeRTOS distribution.
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23 FreeRTOS is free software; you can redistribute it and/or modify it under
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24 the terms of the GNU General Public License (version 2) as published by the
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25 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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27 >>! NOTE: The modification to the GPL is included to allow you to !<<
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28 >>! distribute a combined work that includes FreeRTOS without being !<<
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29 >>! obliged to provide the source code for proprietary components !<<
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30 >>! outside of the FreeRTOS kernel. !<<
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32 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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33 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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34 FOR A PARTICULAR PURPOSE. Full license text is available from the following
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35 link: http://www.freertos.org/a00114.html
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39 ***************************************************************************
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41 * Having a problem? Start by reading the FAQ "My application does *
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42 * not run, what could be wrong?" *
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44 * http://www.FreeRTOS.org/FAQHelp.html *
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46 ***************************************************************************
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48 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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49 license and Real Time Engineers Ltd. contact details.
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51 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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52 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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53 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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55 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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56 Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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57 licenses offer ticketed support, indemnification and middleware.
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59 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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60 engineered and independently SIL3 certified version for use in safety and
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61 mission critical applications that require provable dependability.
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67 * The documentation page for this demo available on http://www.FreeRTOS.org
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68 * documents the hardware configuration required to run this demo. It also
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69 * provides more information on the expected demo application behaviour.
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71 * main() creates all the demo application tasks, then starts the scheduler.
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72 * A lot of the created tasks are from the pool of "standard demo" tasks. The
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73 * web documentation provides more details of the standard demo tasks, which
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74 * provide no particular functionality but do provide good examples of how to
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75 * use the FreeRTOS API.
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77 * In addition to the standard demo tasks, the following tasks, interrupts tests
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78 * and timers are defined and/or created within this file:
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80 * "LCD" task - The LCD task is a 'gatekeeper' task. It is the only task that
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81 * is permitted to access the LCD and therefore ensures access to the LCD is
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82 * always serialised and there are no mutual exclusion issues. When a task or
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83 * an interrupt wants to write to the LCD, it does not access the LCD directly
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84 * but instead sends the message to the LCD task. The LCD task then performs
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85 * the actual LCD output. This mechanism also allows interrupts to, in effect,
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86 * write to the LCD by sending messages to the LCD task.
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88 * The LCD task is also a demonstration of a 'controller' task design pattern.
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89 * Some tasks do not actually send a string to the LCD task directly, but
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90 * instead send a command that is interpreted by the LCD task. In a normal
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91 * application these commands can be control values or set points, in this
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92 * simple example the commands just result in messages being displayed on the
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95 * "Button Poll" task - This task polls the state of the 'up' key on the
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96 * joystick input device. It uses the vTaskDelay() API function to control
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97 * the poll rate to ensure debouncing is not necessary and that the task does
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98 * not use all the available CPU processing time.
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100 * Button Interrupt - The select button on the joystick input device is
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101 * configured to generate an external interrupt. The handler for this interrupt
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102 * sends a message to LCD task, which then prints out a string to say the
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103 * joystick select button was pressed.
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105 * Idle Hook - The idle hook is a function that is called on each iteration of
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106 * the idle task. In this case it is used to place the processor into a low
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107 * power mode. Note however that this application is implemented using standard
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108 * components, and is therefore not optimised for low power operation. Lower
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109 * power consumption would be achieved by converting polling tasks into event
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110 * driven tasks, and slowing the tick interrupt frequency, etc.
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112 * "Check" callback function - Called each time the 'check' timer expires. The
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113 * check timer executes every five seconds. Its main function is to check that
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114 * all the standard demo tasks are still operational. Each time it executes it
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115 * sends a status code to the LCD task. The LCD task interprets the code and
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116 * displays an appropriate message - which will be PASS if no tasks have
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117 * reported any errors, or a message stating which task has reported an error.
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119 * "Reg test" tasks - These fill the registers with known values, then check
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120 * that each register still contains its expected value. Each task uses
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121 * different values. The tasks run with very low priority so get preempted
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122 * very frequently. A check variable is incremented on each iteration of the
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123 * test loop. A register containing an unexpected value is indicative of an
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124 * error in the context switching mechanism and will result in a branch to a
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125 * null loop - which in turn will prevent the check variable from incrementing
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126 * any further and allow the check timer callback (described a above) to
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127 * determine that an error has occurred. The nature of the reg test tasks
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128 * necessitates that they are written in assembly code.
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130 * Tick hook function - called inside the RTOS tick function, this simple
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131 * example does nothing but toggle an LED.
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133 * *NOTE 1* vApplicationSetupTimerInterrupt() is called by the kernel to let
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134 * the application set up a timer to generate the tick interrupt. In this
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135 * example a timer A0 is used for this purpose.
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139 /* Standard includes. */
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142 /* FreeRTOS includes. */
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143 #include "FreeRTOS.h"
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145 #include "timers.h"
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148 /* Hardware includes. */
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149 #include "msp430.h"
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150 #include "hal_MSP-EXP430F5438.h"
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152 /* Standard demo includes. */
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153 #include "ParTest.h"
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154 #include "dynamic.h"
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155 #include "comtest2.h"
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156 #include "GenQTest.h"
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157 #include "TimerDemo.h"
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158 #include "countsem.h"
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160 /* Codes sent within messages to the LCD task so the LCD task can interpret
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161 exactly what the message it just received was. These are sent in the
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162 cMessageID member of the message structure (defined below). */
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163 #define mainMESSAGE_BUTTON_UP ( 1 )
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164 #define mainMESSAGE_BUTTON_SEL ( 2 )
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165 #define mainMESSAGE_STATUS ( 3 )
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167 /* When the cMessageID member of the message sent to the LCD task is
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168 mainMESSAGE_STATUS then these definitions are sent in the ulMessageValue member
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169 of the same message and indicate what the status actually is. */
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170 #define mainERROR_DYNAMIC_TASKS ( pdPASS + 1 )
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171 #define mainERROR_COM_TEST ( pdPASS + 2 )
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172 #define mainERROR_GEN_QUEUE_TEST ( pdPASS + 3 )
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173 #define mainERROR_REG_TEST ( pdPASS + 4 )
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174 #define mainERROR_TIMER_TEST ( pdPASS + 5 )
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175 #define mainERROR_COUNT_SEM_TEST ( pdPASS + 6 )
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177 /* The length of the queue (the number of items the queue can hold) that is used
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178 to send messages from tasks and interrupts the the LCD task. */
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179 #define mainQUEUE_LENGTH ( 5 )
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181 /* Priorities used by the test and demo tasks. */
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182 #define mainLCD_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
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183 #define mainCOM_TEST_PRIORITY ( tskIDLE_PRIORITY + 2 )
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184 #define mainGENERIC_QUEUE_TEST_PRIORITY ( tskIDLE_PRIORITY )
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186 /* The LED used by the comtest tasks. See the comtest.c file for more
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188 #define mainCOM_TEST_LED ( 1 )
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190 /* The baud rate used by the comtest tasks. */
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191 #define mainCOM_TEST_BAUD_RATE ( 38400 )
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193 /* The maximum number of lines of text that can be displayed on the LCD. */
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194 #define mainMAX_LCD_LINES ( 8 )
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196 /* Just used to ensure parameters are passed into tasks correctly. */
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197 #define mainTASK_PARAMETER_CHECK_VALUE ( ( void * ) 0xDEAD )
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199 /* The base period used by the timer test tasks. */
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200 #define mainTIMER_TEST_PERIOD ( 50 )
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202 /* The frequency at which the check timer (described in the comments at the top
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203 of this file) will call its callback function. */
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204 #define mainCHECK_TIMER_PERIOD ( 5000UL / ( unsigned long ) portTICK_PERIOD_MS )
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207 #define mainDONT_BLOCK ( 0 )
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208 /*-----------------------------------------------------------*/
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211 * The reg test tasks as described at the top of this file.
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213 extern void vRegTest1Task( void *pvParameters );
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214 extern void vRegTest2Task( void *pvParameters );
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217 * Configures clocks, LCD, port pints, etc. necessary to execute this demo.
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219 static void prvSetupHardware( void );
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222 * Definition of the LCD/controller task described in the comments at the top
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225 static void prvLCDTask( void *pvParameters );
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228 * Definition of the button poll task described in the comments at the top of
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231 static void prvButtonPollTask( void *pvParameters );
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234 * Converts a status message value into an appropriate string for display on
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235 * the LCD. The string is written to pcBuffer.
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237 static void prvGenerateStatusMessage( char *pcBuffer, unsigned long ulStatusValue );
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240 * Defines the 'check' functionality as described at the top of this file. This
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241 * function is the callback function for the 'check' timer. */
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242 static void vCheckTimerCallback( TimerHandle_t xTimer );
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244 /*-----------------------------------------------------------*/
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246 /* Variables that are incremented on each iteration of the reg test tasks -
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247 provided the tasks have not reported any errors. The check task inspects these
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248 variables to ensure they are still incrementing as expected. If a variable
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249 stops incrementing then it is likely that its associate task has stalled. */
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250 volatile unsigned short usRegTest1Counter = 0, usRegTest2Counter = 0;
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252 /* The handle of the queue used to send messages from tasks and interrupts to
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254 static QueueHandle_t xLCDQueue = NULL;
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256 /* The 'check' timer, as described at the top of this file. */
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257 static TimerHandle_t xCheckTimer = NULL;
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259 /* The definition of each message sent from tasks and interrupts to the LCD
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263 char cMessageID; /* << States what the message is. */
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264 unsigned long ulMessageValue; /* << States the message value (can be an integer, string pointer, etc. depending on the value of cMessageID). */
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267 /*-----------------------------------------------------------*/
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271 /* Configure the peripherals used by this demo application. This includes
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272 configuring the joystick input select button to generate interrupts. */
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273 prvSetupHardware();
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275 /* Create the queue used by tasks and interrupts to send strings to the LCD
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277 xLCDQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( xQueueMessage ) );
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279 /* If the queue could not be created then don't create any tasks that might
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280 attempt to use the queue. */
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281 if( xLCDQueue != NULL )
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283 /* Create the standard demo tasks. */
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284 vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainCOM_TEST_BAUD_RATE, mainCOM_TEST_LED );
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285 vStartDynamicPriorityTasks();
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286 vStartGenericQueueTasks( mainGENERIC_QUEUE_TEST_PRIORITY );
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287 vStartCountingSemaphoreTasks();
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289 /* Note that creating the timer test/demo tasks will fill the timer
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290 command queue. This is intentional, and forms part of the test the tasks
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291 perform. It does mean however that, after this function is called, no
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292 more timer commands can be sent until after the scheduler has been
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293 started (at which point the timer daemon will drained the timer command
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294 queue, freeing up space for more commands to be received). */
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295 vStartTimerDemoTask( mainTIMER_TEST_PERIOD );
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297 /* Create the LCD, button poll and register test tasks, as described at
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298 the top of this file. */
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299 xTaskCreate( prvLCDTask, "LCD", configMINIMAL_STACK_SIZE * 2, mainTASK_PARAMETER_CHECK_VALUE, mainLCD_TASK_PRIORITY, NULL );
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300 xTaskCreate( prvButtonPollTask, "BPoll", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
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301 xTaskCreate( vRegTest1Task, "Reg1", configMINIMAL_STACK_SIZE, NULL, 0, NULL );
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302 xTaskCreate( vRegTest2Task, "Reg2", configMINIMAL_STACK_SIZE, NULL, 0, NULL );
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304 /* Create the 'check' timer - the timer that periodically calls the
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305 check function as described at the top of this file. Note that, for
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306 the reasons stated in the comments above the call to
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307 vStartTimerDemoTask(), that the check timer is not actually started
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308 until after the scheduler has been started. */
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309 xCheckTimer = xTimerCreate( "Check timer", mainCHECK_TIMER_PERIOD, pdTRUE, ( void * ) 0, vCheckTimerCallback );
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311 /* Start the scheduler. */
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312 vTaskStartScheduler();
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315 /* If all is well then this line will never be reached. If it is reached
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316 then it is likely that there was insufficient (FreeRTOS) heap memory space
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317 to create the idle task. This may have been trapped by the malloc() failed
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318 hook function, if one is configured. */
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321 /*-----------------------------------------------------------*/
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323 static void prvLCDTask( void *pvParameters )
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325 xQueueMessage xReceivedMessage;
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327 /* Buffer into which strings are formatted and placed ready for display on the
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328 LCD. Note this is a static variable to prevent it being allocated on the task
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329 stack, which is too small to hold such a variable. The stack size is configured
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330 when the task is created. */
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331 static char cBuffer[ 50 ];
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332 unsigned char ucLine = 1;
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334 /* Now the scheduler has been started (it must have been for this task to
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335 be running), start the check timer too. The call to xTimerStart() will
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336 block until the command has been accepted. */
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337 if( xCheckTimer != NULL )
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339 xTimerStart( xCheckTimer, portMAX_DELAY );
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342 /* This is the only function that is permitted to access the LCD.
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344 First print out the number of bytes that remain in the FreeRTOS heap. This
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345 is done after a short delay to ensure all the demo tasks have created all
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346 the objects they are going to use. */
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347 vTaskDelay( mainTIMER_TEST_PERIOD * 10 );
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348 sprintf( cBuffer, "%d heap free", ( int ) xPortGetFreeHeapSize() );
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349 halLcdPrintLine( cBuffer, ucLine, OVERWRITE_TEXT );
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352 /* Just as a test of the port, and for no functional reason, check the task
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353 parameter contains its expected value. */
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354 if( pvParameters != mainTASK_PARAMETER_CHECK_VALUE )
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356 halLcdPrintLine( "Invalid parameter", ucLine, OVERWRITE_TEXT );
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362 /* Wait for a message to be received. Using portMAX_DELAY as the block
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363 time will result in an indefinite wait provided INCLUDE_vTaskSuspend is
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364 set to 1 in FreeRTOSConfig.h, therefore there is no need to check the
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365 function return value and the function will only return when a value
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366 has been received. */
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367 xQueueReceive( xLCDQueue, &xReceivedMessage, portMAX_DELAY );
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369 /* Clear the LCD if no room remains for any more text output. */
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370 if( ucLine > mainMAX_LCD_LINES )
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372 halLcdClearScreen();
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376 /* What is this message? What does it contain? */
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377 switch( xReceivedMessage.cMessageID )
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379 case mainMESSAGE_BUTTON_UP : /* The button poll task has just
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380 informed this task that the up
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381 button on the joystick input has
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382 been pressed or released. */
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383 sprintf( cBuffer, "Button up = %d", ( int ) xReceivedMessage.ulMessageValue );
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386 case mainMESSAGE_BUTTON_SEL : /* The select button interrupt
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387 just informed this task that the
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388 select button has been pressed.
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389 In this case the pointer to the
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390 string to print is sent directly
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391 in the ulMessageValue member of
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392 the message. This just
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393 demonstrates a different
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394 communication technique. */
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395 sprintf( cBuffer, "%s", ( char * ) xReceivedMessage.ulMessageValue );
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398 case mainMESSAGE_STATUS : /* The tick interrupt hook
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399 function has just informed this
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400 task of the system status.
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401 Generate a string in accordance
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402 with the status value. */
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403 prvGenerateStatusMessage( cBuffer, xReceivedMessage.ulMessageValue );
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406 default : sprintf( cBuffer, "Unknown message" );
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410 /* Output the message that was placed into the cBuffer array within the
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411 switch statement above, then move onto the next line ready for the next
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412 message to arrive on the queue. */
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413 halLcdPrintLine( cBuffer, ucLine, OVERWRITE_TEXT );
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417 /*-----------------------------------------------------------*/
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419 static void prvGenerateStatusMessage( char *pcBuffer, unsigned long ulStatusValue )
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421 /* Just a utility function to convert a status value into a meaningful
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422 string for output onto the LCD. */
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423 switch( ulStatusValue )
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425 case pdPASS : sprintf( pcBuffer, "Status = PASS" );
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427 case mainERROR_DYNAMIC_TASKS : sprintf( pcBuffer, "Err: Dynamic tsks" );
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429 case mainERROR_COM_TEST : sprintf( pcBuffer, "Err: COM test" );
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431 case mainERROR_GEN_QUEUE_TEST : sprintf( pcBuffer, "Error: Gen Q test" );
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433 case mainERROR_REG_TEST : sprintf( pcBuffer, "Error: Reg test" );
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435 case mainERROR_TIMER_TEST : sprintf( pcBuffer, "Error: Tmr test" );
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437 case mainERROR_COUNT_SEM_TEST : sprintf( pcBuffer, "Error: Count sem" );
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439 default : sprintf( pcBuffer, "Unknown status" );
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443 /*-----------------------------------------------------------*/
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445 static void prvButtonPollTask( void *pvParameters )
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447 unsigned char ucLastState = pdFALSE, ucState;
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448 xQueueMessage xMessage;
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450 /* This tasks performs the button polling functionality as described at the
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451 top of this file. */
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454 /* Check the button state. */
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455 ucState = ( halButtonsPressed() & BUTTON_UP );
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459 /* The button was pressed. */
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463 if( ucState != ucLastState )
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465 /* The state has changed, send a message to the LCD task. */
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466 xMessage.cMessageID = mainMESSAGE_BUTTON_UP;
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467 xMessage.ulMessageValue = ( unsigned long ) ucState;
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468 ucLastState = ucState;
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469 xQueueSend( xLCDQueue, &xMessage, portMAX_DELAY );
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472 /* Block for 10 milliseconds so this task does not utilise all the CPU
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473 time and debouncing of the button is not necessary. */
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474 vTaskDelay( 10 / portTICK_PERIOD_MS );
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477 /*-----------------------------------------------------------*/
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479 static void vCheckTimerCallback( TimerHandle_t xTimer )
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481 static unsigned short usLastRegTest1Counter = 0, usLastRegTest2Counter = 0;
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483 /* Define the status message that is sent to the LCD task. By default the
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485 static xQueueMessage xStatusMessage = { mainMESSAGE_STATUS, pdPASS };
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487 /* This is the callback function used by the 'check' timer, as described
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488 at the top of this file. */
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490 /* The parameter is not used. */
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493 /* See if the standard demo tasks are executing as expected, changing
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494 the message that is sent to the LCD task from PASS to an error code if
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495 any tasks set reports an error. */
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496 if( xAreComTestTasksStillRunning() != pdPASS )
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498 xStatusMessage.ulMessageValue = mainERROR_COM_TEST;
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501 if( xAreDynamicPriorityTasksStillRunning() != pdPASS )
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503 xStatusMessage.ulMessageValue = mainERROR_DYNAMIC_TASKS;
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506 if( xAreGenericQueueTasksStillRunning() != pdPASS )
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508 xStatusMessage.ulMessageValue = mainERROR_GEN_QUEUE_TEST;
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511 if( xAreCountingSemaphoreTasksStillRunning() != pdPASS )
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513 xStatusMessage.ulMessageValue = mainERROR_COUNT_SEM_TEST;
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516 if( xAreTimerDemoTasksStillRunning( ( TickType_t ) mainCHECK_TIMER_PERIOD ) != pdPASS )
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518 xStatusMessage.ulMessageValue = mainERROR_TIMER_TEST;
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521 /* Check the reg test tasks are still cycling. They will stop
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522 incrementing their loop counters if they encounter an error. */
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523 if( usRegTest1Counter == usLastRegTest1Counter )
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525 xStatusMessage.ulMessageValue = mainERROR_REG_TEST;
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528 if( usRegTest2Counter == usLastRegTest2Counter )
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530 xStatusMessage.ulMessageValue = mainERROR_REG_TEST;
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533 usLastRegTest1Counter = usRegTest1Counter;
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534 usLastRegTest2Counter = usRegTest2Counter;
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536 /* This is called from a timer callback so must not block! */
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537 xQueueSendToBack( xLCDQueue, &xStatusMessage, mainDONT_BLOCK );
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539 /*-----------------------------------------------------------*/
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541 static void prvSetupHardware( void )
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543 taskDISABLE_INTERRUPTS();
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545 /* Disable the watchdog. */
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546 WDTCTL = WDTPW + WDTHOLD;
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550 LFXT_Start( XT1DRIVE_0 );
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551 hal430SetSystemClock( configCPU_CLOCK_HZ, configLFXT_CLOCK_HZ );
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553 halButtonsInit( BUTTON_ALL );
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554 halButtonsInterruptEnable( BUTTON_SELECT );
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556 /* Initialise the LCD, but note that the backlight is not used as the
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557 library function uses timer A0 to modulate the backlight, and this file
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558 defines vApplicationSetupTimerInterrupt() to also use timer A0 to generate
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559 the tick interrupt. If the backlight is required, then change either the
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560 halLCD library or vApplicationSetupTimerInterrupt() to use a different
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561 timer. Timer A1 is used for the run time stats time base6. */
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563 halLcdSetContrast( 100 );
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564 halLcdClearScreen();
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566 halLcdPrintLine( " www.FreeRTOS.org", 0, OVERWRITE_TEXT );
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568 /*-----------------------------------------------------------*/
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571 void vApplicationTickHook( void )
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573 static unsigned long ulCounter = 0;
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575 /* Is it time to toggle the LED again? */
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578 /* Just periodically toggle an LED to show that the tick interrupt is
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579 running. Note that this access LED_PORT_OUT in a non-atomic way, so tasks
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580 that access the same port must do so from a critical section. */
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581 if( ( ulCounter & 0xff ) == 0 )
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583 if( ( LED_PORT_OUT & LED_1 ) == 0 )
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585 LED_PORT_OUT |= LED_1;
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589 LED_PORT_OUT &= ~LED_1;
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593 /*-----------------------------------------------------------*/
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595 #pragma vector=PORT2_VECTOR
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596 interrupt void prvSelectButtonInterrupt( void )
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598 /* Define the message sent to the LCD task from this interrupt. */
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599 static const xQueueMessage xMessage = { mainMESSAGE_BUTTON_SEL, ( unsigned long ) "Select Interrupt" };
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600 portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
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602 /* This is the interrupt handler for the joystick select button input.
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603 The button has been pushed, write a message to the LCD via the LCD task. */
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604 xQueueSendFromISR( xLCDQueue, &xMessage, &xHigherPriorityTaskWoken );
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608 /* If writing to xLCDQueue caused a task to unblock, and the unblocked task
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609 has a priority equal to or above the task that this interrupt interrupted,
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610 then lHigherPriorityTaskWoken will have been set to pdTRUE internally within
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611 xQueuesendFromISR(), and portEND_SWITCHING_ISR() will ensure that this
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612 interrupt returns directly to the higher priority unblocked task. */
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613 portYIELD_FROM_ISR( xHigherPriorityTaskWoken );
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615 /*-----------------------------------------------------------*/
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617 /* The MSP430X port uses this callback function to configure its tick interrupt.
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618 This allows the application to choose the tick interrupt source.
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619 configTICK_VECTOR must also be set in FreeRTOSConfig.h to the correct
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620 interrupt vector for the chosen tick interrupt source. This implementation of
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621 vApplicationSetupTimerInterrupt() generates the tick from timer A0, so in this
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622 case configTICK_VECTOR is set to TIMER0_A0_VECTOR. */
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623 void vApplicationSetupTimerInterrupt( void )
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625 const unsigned short usACLK_Frequency_Hz = 32768;
\r
627 /* Ensure the timer is stopped. */
\r
630 /* Run the timer from the ACLK. */
\r
633 /* Clear everything to start with. */
\r
636 /* Set the compare match value according to the tick rate we want. */
\r
637 TA0CCR0 = usACLK_Frequency_Hz / configTICK_RATE_HZ;
\r
639 /* Enable the interrupts. */
\r
642 /* Start up clean. */
\r
648 /*-----------------------------------------------------------*/
\r
650 void vApplicationIdleHook( void )
\r
652 /* Called on each iteration of the idle task. In this case the idle task
\r
653 just enters a low(ish) power mode. */
\r
654 __bis_SR_register( LPM1_bits + GIE );
\r
656 /*-----------------------------------------------------------*/
\r
658 void vApplicationMallocFailedHook( void )
\r
660 /* Called if a call to pvPortMalloc() fails because there is insufficient
\r
661 free memory available in the FreeRTOS heap. pvPortMalloc() is called
\r
662 internally by FreeRTOS API functions that create tasks, queues or
\r
664 taskDISABLE_INTERRUPTS();
\r
667 /*-----------------------------------------------------------*/
\r
669 void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
\r
672 ( void ) pcTaskName;
\r
674 /* Run time stack overflow checking is performed if
\r
675 configconfigCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook
\r
676 function is called if a stack overflow is detected. */
\r
677 taskDISABLE_INTERRUPTS();
\r
680 /*-----------------------------------------------------------*/
\r
projects / freertos / blob