/* FreeRTOS V9.0.0 - Copyright (C) 2015 Real Time Engineers Ltd. All rights reserved VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. This file is part of the FreeRTOS distribution. FreeRTOS is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License (version 2) as published by the Free Software Foundation >>>> AND MODIFIED BY <<<< the FreeRTOS exception. *************************************************************************** >>! NOTE: The modification to the GPL is included to allow you to !<< >>! distribute a combined work that includes FreeRTOS without being !<< >>! obliged to provide the source code for proprietary components !<< >>! outside of the FreeRTOS kernel. !<< *************************************************************************** FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Full license text is available on the following link: http://www.freertos.org/a00114.html *************************************************************************** * * * FreeRTOS provides completely free yet professionally developed, * * robust, strictly quality controlled, supported, and cross * * platform software that is more than just the market leader, it * * is the industry's de facto standard. * * * * Help yourself get started quickly while simultaneously helping * * to support the FreeRTOS project by purchasing a FreeRTOS * * tutorial book, reference manual, or both: * * http://www.FreeRTOS.org/Documentation * * * *************************************************************************** http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading the FAQ page "My application does not run, what could be wrong?". Have you defined configASSERT()? http://www.FreeRTOS.org/support - In return for receiving this top quality embedded software for free we request you assist our global community by participating in the support forum. http://www.FreeRTOS.org/training - Investing in training allows your team to be as productive as possible as early as possible. Now you can receive FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers Ltd, and the world's leading authority on the world's leading RTOS. http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, including FreeRTOS+Trace - an indispensable productivity tool, a DOS compatible FAT file system, and our tiny thread aware UDP/IP stack. http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate. Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS. http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS licenses offer ticketed support, indemnification and commercial middleware. http://www.SafeRTOS.com - High Integrity Systems also provide a safety engineered and independently SIL3 certified version for use in safety and mission critical applications that require provable dependability. 1 tab == 4 spaces! */ /****************************************************************************** * This project provides two demo applications. A simple blinky style project * that demonstrates low power tickless functionality, and a more comprehensive * test and demo application. The configCREATE_LOW_POWER_DEMO setting, which is * defined in FreeRTOSConfig.h, is used to select between the two. The simply * blinky low power demo is implemented and described in main_low_power.c. The * more comprehensive test and demo application is implemented and described in * main_full.c. * * This file implements the code that is not demo specific, including the * hardware setup and standard FreeRTOS hook functions. * * ENSURE TO READ THE DOCUMENTATION PAGE FOR THIS PORT AND DEMO APPLICATION ON * THE http://www.FreeRTOS.org WEB SITE FOR FULL INFORMATION ON USING THIS DEMO * APPLICATION, AND ITS ASSOCIATE FreeRTOS ARCHITECTURE PORT! * */ /* Scheduler include files. */ #include "FreeRTOS.h" #include "task.h" /* Hardware register addresses and value. */ #define mainVTOR ( * ( uint32_t * ) 0xE000ED08 ) #define mainNVIC_AUX_ACTLR ( * ( uint32_t * ) 0xE000E008 ) #define mainEC_INTERRUPT_CONTROL ( * ( volatile uint32_t * ) 0x4000FC18 ) #define mainMMCR_PCR_PROCESSOR_CLOCK_CONTROL ( * ( volatile uint32_t * )( 0x40080120 ) ) #define mainCPU_CLOCK_DIVIDER 1 /*-----------------------------------------------------------*/ /* * Configure the hardware as necessary to run this demo. */ static void prvSetupHardware( void ); /* * main_low_power() is used when configCREATE_LOW_POWER_DEMO is set to 1. * main_full() is used when configCREATE_LOW_POWER_DEMO is set to 0. */ #if( configCREATE_LOW_POWER_DEMO == 1 ) extern void main_low_power( void ); #else extern void main_full( void ); /* Some of the tests and examples executed as part of the full demo make use of the tick hook to call API functions from an interrupt context. */ extern void vFullDemoTickHook( void ); #endif /* #if configCREATE_LOW_POWER_DEMO == 1 */ /* Prototypes for the standard FreeRTOS callback/hook functions implemented within this file. */ void vApplicationMallocFailedHook( void ); void vApplicationIdleHook( void ); void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName ); void vApplicationTickHook( void ); /*-----------------------------------------------------------*/ /* The variable that is incremented to represent each LED toggle. On the clicker hardware the LED state is set to the value of the least significant bit of this variable. On other hardware, where an LED is not used, the LED just keeps a count of the number of times the LED would otherwise have been toggled. See the comments in main_low_power.c and main_full.c for information on the expected LED toggle rate). */ volatile uint32_t ulLED = 0; /*-----------------------------------------------------------*/ int main( void ) { /* Configure the hardware ready to run the demo. */ prvSetupHardware(); /* The configCREATE_LOW_POWER_DEMO setting is described at the top of this file. */ #if( configCREATE_LOW_POWER_DEMO == 1 ) { main_low_power(); } #else { main_full(); } #endif /* Should not get here. */ return 0; } /*-----------------------------------------------------------*/ static void prvSetupHardware( void ) { /* Disable M4 write buffer: fix MEC1322 hardware bug. */ mainNVIC_AUX_ACTLR |= 0x07; /* Set divider to 8 for 8MHz operation, MCLK in silicon chip is 64MHz, CPU=MCLK/Divider. */ mainMMCR_PCR_PROCESSOR_CLOCK_CONTROL = mainCPU_CLOCK_DIVIDER; /* Enable alternative NVIC vectors. */ mainEC_INTERRUPT_CONTROL = pdTRUE; /* Initialise the LED on the clicker board. */ GPIO_Digital_Output( &GPIO_PORT_150_157, _GPIO_PINMASK_4 | _GPIO_PINMASK_5 ); GPIO_OUTPUT_PIN_154_bit = 0; GPIO_OUTPUT_PIN_155_bit = 0; } /*-----------------------------------------------------------*/ void vApplicationMallocFailedHook( void ) { /* Called if a call to pvPortMalloc() fails because there is insufficient free memory available in the FreeRTOS heap. pvPortMalloc() is called internally by FreeRTOS API functions that create tasks, queues, software timers, and semaphores. The size of the FreeRTOS heap is set by the configTOTAL_HEAP_SIZE configuration constant in FreeRTOSConfig.h. */ /* Force an assert. */ configASSERT( ( volatile void * ) NULL ); } /*-----------------------------------------------------------*/ void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName ) { ( void ) pcTaskName; ( void ) pxTask; /* Run time stack overflow checking is performed if configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook function is called if a stack overflow is detected. */ /* Force an assert. */ configASSERT( ( volatile void * ) NULL ); } /*-----------------------------------------------------------*/ void vApplicationIdleHook( void ) { volatile size_t xFreeHeapSpace; /* This is just a trivial example of an idle hook. It is called on each cycle of the idle task. It must *NOT* attempt to block. In this case the idle task just queries the amount of FreeRTOS heap that remains. See the memory management section on the http://www.FreeRTOS.org web site for memory management options. If there is a lot of heap memory free then the configTOTAL_HEAP_SIZE value in FreeRTOSConfig.h can be reduced to free up RAM. */ xFreeHeapSpace = xPortGetFreeHeapSize(); /* Remove compiler warning about xFreeHeapSpace being set but never used. */ ( void ) xFreeHeapSpace; } /*-----------------------------------------------------------*/ void vApplicationTickHook( void ) { /* The full demo includes tests that run from the tick hook. */ #if( configCREATE_LOW_POWER_DEMO == 0 ) { /* Some of the tests and demo tasks executed by the full demo include interaction from an interrupt - for which the tick interrupt is used via the tick hook function. */ vFullDemoTickHook(); } #endif } /*-----------------------------------------------------------*/ /* configUSE_STATIC_ALLOCATION is set to 1, so the application must provide an implementation of vApplicationGetIdleTaskMemory() to provide the memory that is used by the Idle task. */ void vApplicationGetIdleTaskMemory( StaticTask_t **ppxIdleTaskTCBBuffer, StackType_t **ppxIdleTaskStackBuffer, uint32_t *pulIdleTaskStackSize ) { /* If the buffers to be provided to the Idle task are declared inside this function then they must be declared static - otherwise they will be allocated on the stack and so not exists after this function exits. */ static StaticTask_t xIdleTaskTCB; static StackType_t uxIdleTaskStack[ configMINIMAL_STACK_SIZE ]; /* Pass out a pointer to the StaticTask_t structure in which the Idle task's state will be stored. */ *ppxIdleTaskTCBBuffer = &xIdleTaskTCB; /* Pass out the array that will be used as the Idle task's stack. */ *ppxIdleTaskStackBuffer = uxIdleTaskStack; /* Pass out the size of the array pointed to by *ppxIdleTaskStackBuffer. Note that, as the array is necessarily of type StackType_t, configMINIMAL_STACK_SIZE is specified in words, not bytes. */ *pulIdleTaskStackSize = configMINIMAL_STACK_SIZE; } /*-----------------------------------------------------------*/ /* configUSE_STATIC_ALLOCATION and configUSE_TIMERS are both set to 1, so the application must provide an implementation of vApplicationGetTimerTaskMemory() to provide the memory that is used by the Timer service task. */ void vApplicationGetTimerTaskMemory( StaticTask_t **ppxTimerTaskTCBBuffer, StackType_t **ppxTimerTaskStackBuffer, uint32_t *pulTimerTaskStackSize ) { /* If the buffers to be provided to the Timer task are declared inside this function then they must be declared static - otherwise they will be allocated on the stack and so not exists after this function exits. */ static StaticTask_t xTimerTaskTCB; static StackType_t uxTimerTaskStack[ configTIMER_TASK_STACK_DEPTH ]; /* Pass out a pointer to the StaticTask_t structure in which the Timer task's state will be stored. */ *ppxTimerTaskTCBBuffer = &xTimerTaskTCB; /* Pass out the array that will be used as the Timer task's stack. */ *ppxTimerTaskStackBuffer = uxTimerTaskStack; /* Pass out the size of the array pointed to by *ppxTimerTaskStackBuffer. Note that, as the array is necessarily of type StackType_t, configMINIMAL_STACK_SIZE is specified in words, not bytes. */ *pulTimerTaskStackSize = configTIMER_TASK_STACK_DEPTH; }