2 * FreeRTOS Kernel V10.1.0
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3 * Copyright (C) 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
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6 * this software and associated documentation files (the "Software"), to deal in
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7 * the Software without restriction, including without limitation the rights to
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8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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9 * the Software, and to permit persons to whom the Software is furnished to do so,
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10 * subject to the following conditions:
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12 * The above copyright notice and this permission notice shall be included in all
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13 * copies or substantial portions of the Software.
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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17 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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18 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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22 * http://www.FreeRTOS.org
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23 * http://aws.amazon.com/freertos
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25 * 1 tab == 4 spaces!
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28 /******************************************************************************
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29 * This project provides two demo applications. A simple blinky style project,
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30 * and a more comprehensive test and demo application. The
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31 * mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to
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32 * select between the two. The simply blinky demo is implemented and described
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33 * in main_blinky.c. The more comprehensive test and demo application is
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34 * implemented and described in main_full.c.
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36 * This file implements the code that is not demo specific, including the
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37 * hardware setup and FreeRTOS hook functions.
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40 /* Kernel includes. */
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41 #include "FreeRTOS.h"
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44 /* Standard demo includes. */
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45 #include "partest.h"
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47 /* Hardware specific includes. */
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48 #include "ConfigPerformance.h"
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50 /* Core configuratin fuse settings */
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51 #pragma config FPLLMUL = MUL_20, FPLLIDIV = DIV_2, FPLLODIV = DIV_1, FWDTEN = OFF
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52 #pragma config POSCMOD = HS, FNOSC = PRIPLL, FPBDIV = DIV_2
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53 #pragma config CP = OFF, BWP = OFF, PWP = OFF
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55 /* Additional config fuse settings for other supported processors */
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56 #if defined(__32MX460F512L__)
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57 #pragma config UPLLEN = OFF
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58 #elif defined(__32MX795F512L__)
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59 #pragma config UPLLEN = OFF
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60 #pragma config FSRSSEL = PRIORITY_7
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63 /*-----------------------------------------------------------*/
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65 /* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo,
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66 or 0 to run the more comprehensive test and demo application. */
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67 #define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 0
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69 /*-----------------------------------------------------------*/
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72 * Set up the hardware ready to run this demo.
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74 static void prvSetupHardware( void );
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77 * main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1.
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78 * main_full() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 0.
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80 extern void main_blinky( void );
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81 extern void main_full( void );
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83 /*-----------------------------------------------------------*/
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86 * Create the demo tasks then start the scheduler.
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90 /* Prepare the hardware to run this demo. */
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93 /* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top
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95 #if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1
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107 /*-----------------------------------------------------------*/
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109 static void prvSetupHardware( void )
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111 /* Configure the hardware for maximum performance. */
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112 vHardwareConfigurePerformance();
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114 /* Setup to use the external interrupt controller. */
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115 vHardwareUseMultiVectoredInterrupts();
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117 portDISABLE_INTERRUPTS();
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119 /* Setup the digital IO for the LED's. */
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120 vParTestInitialise();
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122 /*-----------------------------------------------------------*/
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124 void vApplicationMallocFailedHook( void )
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126 /* vApplicationMallocFailedHook() will only be called if
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127 configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook
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128 function that will get called if a call to pvPortMalloc() fails.
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129 pvPortMalloc() is called internally by the kernel whenever a task, queue,
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130 timer or semaphore is created. It is also called by various parts of the
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131 demo application. If heap_1.c or heap_2.c are used, then the size of the
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132 heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in
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133 FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used
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134 to query the size of free heap space that remains (although it does not
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135 provide information on how the remaining heap might be fragmented). */
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136 taskDISABLE_INTERRUPTS();
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139 /*-----------------------------------------------------------*/
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141 void vApplicationIdleHook( void )
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143 /* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set
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144 to 1 in FreeRTOSConfig.h. It will be called on each iteration of the idle
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145 task. It is essential that code added to this hook function never attempts
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146 to block in any way (for example, call xQueueReceive() with a block time
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147 specified, or call vTaskDelay()). If the application makes use of the
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148 vTaskDelete() API function (as this demo application does) then it is also
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149 important that vApplicationIdleHook() is permitted to return to its calling
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150 function, because it is the responsibility of the idle task to clean up
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151 memory allocated by the kernel to any task that has since been deleted. */
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153 /*-----------------------------------------------------------*/
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155 void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
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157 ( void ) pcTaskName;
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160 /* Run time task stack overflow checking is performed if
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161 configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook function is
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162 called if a task stack overflow is detected. Note the system/interrupt
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163 stack is not checked. */
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164 taskDISABLE_INTERRUPTS();
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167 /*-----------------------------------------------------------*/
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169 void vApplicationTickHook( void )
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171 /* This function will be called by each tick interrupt if
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172 configUSE_TICK_HOOK is set to 1 in FreeRTOSConfig.h. User code can be
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173 added here, but the tick hook is called from an interrupt context, so
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174 code must not attempt to block, and only the interrupt safe FreeRTOS API
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175 functions can be used (those that end in FromISR()). */
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177 /*-----------------------------------------------------------*/
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179 void _general_exception_handler( unsigned long ulCause, unsigned long ulStatus )
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181 /* This overrides the definition provided by the kernel. Other exceptions
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182 should be handled here. */
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185 /*-----------------------------------------------------------*/
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187 void vAssertCalled( const char * pcFile, unsigned long ulLine )
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189 volatile unsigned long ul = 0;
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194 __asm volatile( "di" );
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196 /* Set ul to a non-zero value using the debugger to step out of this
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203 __asm volatile( "ei" );
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