--- /dev/null
+/*\r
+ FreeRTOS V9.0.0rc2 - Copyright (C) 2016 Real Time Engineers Ltd.\r
+ All rights reserved\r
+\r
+ VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
+\r
+ This file is part of the FreeRTOS distribution.\r
+\r
+ FreeRTOS is free software; you can redistribute it and/or modify it under\r
+ the terms of the GNU General Public License (version 2) as published by the\r
+ Free Software Foundation >>>> AND MODIFIED BY <<<< the FreeRTOS exception.\r
+\r
+ ***************************************************************************\r
+ >>! NOTE: The modification to the GPL is included to allow you to !<<\r
+ >>! distribute a combined work that includes FreeRTOS without being !<<\r
+ >>! obliged to provide the source code for proprietary components !<<\r
+ >>! outside of the FreeRTOS kernel. !<<\r
+ ***************************************************************************\r
+\r
+ FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
+ FOR A PARTICULAR PURPOSE. Full license text is available on the following\r
+ link: http://www.freertos.org/a00114.html\r
+\r
+ ***************************************************************************\r
+ * *\r
+ * FreeRTOS provides completely free yet professionally developed, *\r
+ * robust, strictly quality controlled, supported, and cross *\r
+ * platform software that is more than just the market leader, it *\r
+ * is the industry's de facto standard. *\r
+ * *\r
+ * Help yourself get started quickly while simultaneously helping *\r
+ * to support the FreeRTOS project by purchasing a FreeRTOS *\r
+ * tutorial book, reference manual, or both: *\r
+ * http://www.FreeRTOS.org/Documentation *\r
+ * *\r
+ ***************************************************************************\r
+\r
+ http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading\r
+ the FAQ page "My application does not run, what could be wrong?". Have you\r
+ defined configASSERT()?\r
+\r
+ http://www.FreeRTOS.org/support - In return for receiving this top quality\r
+ embedded software for free we request you assist our global community by\r
+ participating in the support forum.\r
+\r
+ http://www.FreeRTOS.org/training - Investing in training allows your team to\r
+ be as productive as possible as early as possible. Now you can receive\r
+ FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers\r
+ Ltd, and the world's leading authority on the world's leading RTOS.\r
+\r
+ http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
+ including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
+ compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
+\r
+ http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.\r
+ Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.\r
+\r
+ http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High\r
+ Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS\r
+ licenses offer ticketed support, indemnification and commercial middleware.\r
+\r
+ http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
+ engineered and independently SIL3 certified version for use in safety and\r
+ mission critical applications that require provable dependability.\r
+\r
+ 1 tab == 4 spaces!\r
+*/\r
+\r
+/******************************************************************************\r
+ *\r
+ * See http://www.freertos.org/RTOS-Xilinx-Zynq.html for instructions.\r
+ *\r
+ * This project provides three demo applications. A simple blinky style\r
+ * project, a more comprehensive test and demo application, and an lwIP example.\r
+ * The mainSELECTED_APPLICATION setting (defined in this file) is used to\r
+ * select between the three. The simply blinky demo is implemented and\r
+ * described in main_blinky.c. The more comprehensive test and demo application\r
+ * is implemented and described in main_full.c. The lwIP example is implemented\r
+ * and described in main_lwIP.c.\r
+ *\r
+ * This file implements the code that is not demo specific, including the\r
+ * hardware setup and FreeRTOS hook functions.\r
+ *\r
+ * !!! IMPORTANT NOTE !!!\r
+ * The GCC libraries that ship with the Xilinx SDK make use of the floating\r
+ * point registers. To avoid this causing corruption it is necessary to avoid\r
+ * their use. For this reason main.c contains very basic C implementations of\r
+ * the standard C library functions memset(), memcpy() and memcmp(), which are\r
+ * are used by FreeRTOS itself. Defining these functions in the project\r
+ * prevents the linker pulling them in from the library. Any other standard C\r
+ * library functions that are used by the application must likewise be defined\r
+ * in C.\r
+ *\r
+ * ENSURE TO READ THE DOCUMENTATION PAGE FOR THIS PORT AND DEMO APPLICATION ON\r
+ * THE http://www.FreeRTOS.org WEB SITE FOR FULL INFORMATION ON USING THIS DEMO\r
+ * APPLICATION, AND ITS ASSOCIATE FreeRTOS ARCHITECTURE PORT!\r
+ *\r
+ */\r
+\r
+/* Standard includes. */\r
+#include <stdio.h>\r
+#include <limits.h>\r
+\r
+/* Scheduler include files. */\r
+#include "FreeRTOS.h"\r
+#include "task.h"\r
+#include "semphr.h"\r
+\r
+/* Standard demo includes. */\r
+#include "partest.h"\r
+#include "TimerDemo.h"\r
+#include "QueueOverwrite.h"\r
+#include "EventGroupsDemo.h"\r
+#include "TaskNotify.h"\r
+#include "IntSemTest.h"\r
+\r
+/* Xilinx includes. */\r
+#include "platform.h"\r
+#include "xparameters.h"\r
+#include "xscutimer.h"\r
+#include "xscugic.h"\r
+#include "xil_exception.h"\r
+\r
+/* mainSELECTED_APPLICATION is used to select between three demo applications,\r
+ * as described at the top of this file.\r
+ *\r
+ * When mainSELECTED_APPLICATION is set to 0 the simple blinky example will\r
+ * be run.\r
+ *\r
+ * When mainSELECTED_APPLICATION is set to 1 the comprehensive test and demo\r
+ * application will be run.\r
+ *\r
+ * When mainSELECTED_APPLICATION is set to 2 the lwIP example will be run.\r
+ */\r
+#define mainSELECTED_APPLICATION 1\r
+\r
+/*-----------------------------------------------------------*/\r
+\r
+/*\r
+ * Configure the hardware as necessary to run this demo.\r
+ */\r
+static void prvSetupHardware( void );\r
+\r
+/*\r
+ * See the comments at the top of this file and above the\r
+ * mainSELECTED_APPLICATION definition.\r
+ */\r
+#if ( mainSELECTED_APPLICATION == 0 )\r
+ extern void main_blinky( void );\r
+#elif ( mainSELECTED_APPLICATION == 1 )\r
+ extern void main_full( void );\r
+#elif ( mainSELECTED_APPLICATION == 2 )\r
+ extern void main_lwIP( void );\r
+#else\r
+ #error Invalid mainSELECTED_APPLICATION setting. See the comments at the top of this file and above the mainSELECTED_APPLICATION definition.\r
+#endif\r
+\r
+/*\r
+ * The Xilinx projects use a BSP that do not allow the start up code to be\r
+ * altered easily. Therefore the vector table used by FreeRTOS is defined in\r
+ * FreeRTOS_asm_vectors.S, which is part of this project. Switch to use the\r
+ * FreeRTOS vector table.\r
+ */\r
+extern void vPortInstallFreeRTOSVectorTable( void );\r
+\r
+/* Prototypes for the standard FreeRTOS callback/hook functions implemented\r
+within this file. */\r
+void vApplicationMallocFailedHook( void );\r
+void vApplicationIdleHook( void );\r
+void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName );\r
+void vApplicationTickHook( void );\r
+\r
+/* The private watchdog is used as the timer that generates run time\r
+stats. This frequency means it will overflow quite quickly. */\r
+XScuWdt xWatchDogInstance;\r
+\r
+/*-----------------------------------------------------------*/\r
+\r
+/* The interrupt controller is initialised in this file, and made available to\r
+other modules. */\r
+XScuGic xInterruptController;\r
+\r
+/*-----------------------------------------------------------*/\r
+\r
+int main( void )\r
+{\r
+ /* See http://www.freertos.org/RTOS-Xilinx-Zynq.html for instructions. */\r
+\r
+ /* Configure the hardware ready to run the demo. */\r
+ prvSetupHardware();\r
+\r
+ /* The mainSELECTED_APPLICATION setting is described at the top of this\r
+ file. */\r
+ #if( mainSELECTED_APPLICATION == 0 )\r
+ {\r
+ main_blinky();\r
+ }\r
+ #elif( mainSELECTED_APPLICATION == 1 )\r
+ {\r
+ main_full();\r
+ }\r
+ #else\r
+ {\r
+ main_lwIP();\r
+ }\r
+ #endif\r
+\r
+ /* Don't expect to reach here. */\r
+ return 0;\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+static void prvSetupHardware( void )\r
+{\r
+BaseType_t xStatus;\r
+XScuGic_Config *pxGICConfig;\r
+\r
+ /* Ensure no interrupts execute while the scheduler is in an inconsistent\r
+ state. Interrupts are automatically enabled when the scheduler is\r
+ started. */\r
+ portDISABLE_INTERRUPTS();\r
+\r
+ /* Obtain the configuration of the GIC. */\r
+ pxGICConfig = XScuGic_LookupConfig( XPAR_SCUGIC_SINGLE_DEVICE_ID );\r
+\r
+ /* Sanity check the FreeRTOSConfig.h settings are correct for the\r
+ hardware. */\r
+ configASSERT( pxGICConfig );\r
+ configASSERT( pxGICConfig->CpuBaseAddress == ( configINTERRUPT_CONTROLLER_BASE_ADDRESS + configINTERRUPT_CONTROLLER_CPU_INTERFACE_OFFSET ) );\r
+ configASSERT( pxGICConfig->DistBaseAddress == configINTERRUPT_CONTROLLER_BASE_ADDRESS );\r
+\r
+ /* Install a default handler for each GIC interrupt. */\r
+ xStatus = XScuGic_CfgInitialize( &xInterruptController, pxGICConfig, pxGICConfig->CpuBaseAddress );\r
+ configASSERT( xStatus == XST_SUCCESS );\r
+ ( void ) xStatus; /* Remove compiler warning if configASSERT() is not defined. */\r
+\r
+ /* Initialise the LED port. */\r
+ vParTestInitialise();\r
+\r
+ /* The Xilinx projects use a BSP that do not allow the start up code to be\r
+ altered easily. Therefore the vector table used by FreeRTOS is defined in\r
+ FreeRTOS_asm_vectors.S, which is part of this project. Switch to use the\r
+ FreeRTOS vector table. */\r
+ vPortInstallFreeRTOSVectorTable();\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, software\r
+ timers, and semaphores. The size of the FreeRTOS heap is set by the\r
+ configTOTAL_HEAP_SIZE configuration constant in FreeRTOSConfig.h. */\r
+ taskDISABLE_INTERRUPTS();\r
+ for( ;; );\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )\r
+{\r
+ ( void ) pcTaskName;\r
+ ( void ) pxTask;\r
+\r
+ /* Run time stack overflow checking is performed if\r
+ configCHECK_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
+volatile size_t xFreeHeapSpace, xMinimumEverFreeHeapSpace;\r
+\r
+ /* This is just a trivial example of an idle hook. It is called on each\r
+ cycle of the idle task. It must *NOT* attempt to block. In this case the\r
+ idle task just queries the amount of FreeRTOS heap that remains. See the\r
+ memory management section on the http://www.FreeRTOS.org web site for memory\r
+ management options. If there is a lot of heap memory free then the\r
+ configTOTAL_HEAP_SIZE value in FreeRTOSConfig.h can be reduced to free up\r
+ RAM. */\r
+ xFreeHeapSpace = xPortGetFreeHeapSize();\r
+ xMinimumEverFreeHeapSpace = xPortGetMinimumEverFreeHeapSize();\r
+\r
+ /* Remove compiler warning about xFreeHeapSpace being set but never used. */\r
+ ( void ) xFreeHeapSpace;\r
+ ( void ) xMinimumEverFreeHeapSpace;\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+void vAssertCalled( const char * pcFile, unsigned long ulLine )\r
+{\r
+volatile unsigned long ul = 0;\r
+\r
+ ( void ) pcFile;\r
+ ( void ) ulLine;\r
+\r
+ taskENTER_CRITICAL();\r
+ {\r
+ /* Set ul to a non-zero value using the debugger to step out of this\r
+ function. */\r
+ while( ul == 0 )\r
+ {\r
+ portNOP();\r
+ }\r
+ }\r
+ taskEXIT_CRITICAL();\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+void vApplicationTickHook( void )\r
+{\r
+ #if( mainSELECTED_APPLICATION == 1 )\r
+ {\r
+ /* The full demo includes a software timer demo/test that requires\r
+ prodding periodically from the tick interrupt. */\r
+ vTimerPeriodicISRTests();\r
+\r
+ /* Call the periodic queue overwrite from ISR demo. */\r
+ vQueueOverwritePeriodicISRDemo();\r
+\r
+ /* Call the periodic event group from ISR demo. */\r
+ vPeriodicEventGroupsProcessing();\r
+\r
+ /* Use task notifications from an interrupt. */\r
+ xNotifyTaskFromISR();\r
+\r
+ /* Use mutexes from interrupts. */\r
+ vInterruptSemaphorePeriodicTest();\r
+ }\r
+ #endif\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+void *memcpy( void *pvDest, const void *pvSource, size_t xBytes )\r
+{\r
+/* The compiler used during development seems to err unless these volatiles are\r
+included at -O3 optimisation. */\r
+volatile unsigned char *pcDest = ( volatile unsigned char * ) pvDest, *pcSource = ( volatile unsigned char * ) pvSource;\r
+size_t x;\r
+\r
+ /* Extremely crude standard library implementations in lieu of having a C\r
+ library. */\r
+ if( pvDest != pvSource )\r
+ {\r
+ for( x = 0; x < xBytes; x++ )\r
+ {\r
+ pcDest[ x ] = pcSource[ x ];\r
+ }\r
+ }\r
+\r
+ return pvDest;\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+void *memset( void *pvDest, int iValue, size_t xBytes )\r
+{\r
+/* The compiler used during development seems to err unless these volatiles are\r
+included at -O3 optimisation. */\r
+volatile unsigned char * volatile pcDest = ( volatile unsigned char * volatile ) pvDest;\r
+volatile size_t x;\r
+\r
+ /* Extremely crude standard library implementations in lieu of having a C\r
+ library. */\r
+ for( x = 0; x < xBytes; x++ )\r
+ {\r
+ pcDest[ x ] = ( unsigned char ) iValue;\r
+ }\r
+\r
+ return pvDest;\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+int memcmp( const void *pvMem1, const void *pvMem2, size_t xBytes )\r
+{\r
+const volatile unsigned char *pucMem1 = pvMem1, *pucMem2 = pvMem2;\r
+volatile size_t x;\r
+\r
+ /* Extremely crude standard library implementations in lieu of having a C\r
+ library. */\r
+ for( x = 0; x < xBytes; x++ )\r
+ {\r
+ if( pucMem1[ x ] != pucMem2[ x ] )\r
+ {\r
+ break;\r
+ }\r
+ }\r
+\r
+ return xBytes - x;\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+void vInitialiseTimerForRunTimeStats( void )\r
+{\r
+XScuWdt_Config *pxWatchDogInstance;\r
+uint32_t ulValue;\r
+const uint32_t ulMaxDivisor = 0xff, ulDivisorShift = 0x08;\r
+\r
+ pxWatchDogInstance = XScuWdt_LookupConfig( XPAR_SCUWDT_0_DEVICE_ID );\r
+ XScuWdt_CfgInitialize( &xWatchDogInstance, pxWatchDogInstance, pxWatchDogInstance->BaseAddr );\r
+\r
+ ulValue = XScuWdt_GetControlReg( &xWatchDogInstance );\r
+ ulValue |= ulMaxDivisor << ulDivisorShift;\r
+ XScuWdt_SetControlReg( &xWatchDogInstance, ulValue );\r
+\r
+ XScuWdt_LoadWdt( &xWatchDogInstance, UINT_MAX );\r
+ XScuWdt_SetTimerMode( &xWatchDogInstance );\r
+ XScuWdt_Start( &xWatchDogInstance );\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+/* configUSE_STATIC_ALLOCATION is set to 1, so the application must provide an\r
+implementation of vApplicationGetIdleTaskMemory() to provide the memory that is\r
+used by the Idle task. */\r
+void vApplicationGetIdleTaskMemory( StaticTask_t **ppxIdleTaskTCBBuffer, StackType_t **ppxIdleTaskStackBuffer, uint32_t *pulIdleTaskStackSize )\r
+{\r
+/* If the buffers to be provided to the Idle task are declared inside this\r
+function then they must be declared static - otherwise they will be allocated on\r
+the stack and so not exists after this function exits. */\r
+static StaticTask_t xIdleTaskTCB;\r
+static StackType_t uxIdleTaskStack[ configMINIMAL_STACK_SIZE ];\r
+\r
+ /* Pass out a pointer to the StaticTask_t structure in which the Idle task's\r
+ state will be stored. */\r
+ *ppxIdleTaskTCBBuffer = &xIdleTaskTCB;\r
+\r
+ /* Pass out the array that will be used as the Idle task's stack. */\r
+ *ppxIdleTaskStackBuffer = uxIdleTaskStack;\r
+\r
+ /* Pass out the size of the array pointed to by *ppxIdleTaskStackBuffer.\r
+ Note that, as the array is necessarily of type StackType_t,\r
+ configMINIMAL_STACK_SIZE is specified in words, not bytes. */\r
+ *pulIdleTaskStackSize = configMINIMAL_STACK_SIZE;\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+/* configUSE_STATIC_ALLOCATION and configUSE_TIMERS are both set to 1, so the\r
+application must provide an implementation of vApplicationGetTimerTaskMemory()\r
+to provide the memory that is used by the Timer service task. */\r
+void vApplicationGetTimerTaskMemory( StaticTask_t **ppxTimerTaskTCBBuffer, StackType_t **ppxTimerTaskStackBuffer, uint32_t *pulTimerTaskStackSize )\r
+{\r
+/* If the buffers to be provided to the Timer task are declared inside this\r
+function then they must be declared static - otherwise they will be allocated on\r
+the stack and so not exists after this function exits. */\r
+static StaticTask_t xTimerTaskTCB;\r
+static StackType_t uxTimerTaskStack[ configTIMER_TASK_STACK_DEPTH ];\r
+\r
+ /* Pass out a pointer to the StaticTask_t structure in which the Timer\r
+ task's state will be stored. */\r
+ *ppxTimerTaskTCBBuffer = &xTimerTaskTCB;\r
+\r
+ /* Pass out the array that will be used as the Timer task's stack. */\r
+ *ppxTimerTaskStackBuffer = uxTimerTaskStack;\r
+\r
+ /* Pass out the size of the array pointed to by *ppxTimerTaskStackBuffer.\r
+ Note that, as the array is necessarily of type StackType_t,\r
+ configMINIMAL_STACK_SIZE is specified in words, not bytes. */\r
+ *pulTimerTaskStackSize = configTIMER_TASK_STACK_DEPTH;\r
+}\r
+\r
+\r
projects / freertos / blobdiff