First version under SVN is V4.0.1

2025-08-18 09:08:33 -04:00 · 2006-05-02 09:39:15 +00:00 · 2006-05-02 09:39:15 +00:00 · b6df57c7e3
commit b6df57c7e3
parent 243393860c
918 changed files with 269038 additions and 0 deletions
--- a/Demo/Common/Minimal/flash.c
+++ b/Demo/Common/Minimal/flash.c
@ -0,0 +1,138 @@
+/*
+	FreeRTOS V4.0.1 - Copyright (C) 2003-2006 Richard Barry.
+
+	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 as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	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.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with FreeRTOS; if not, write to the Free Software
+	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+	A special exception to the GPL can be applied should you wish to distribute
+	a combined work that includes FreeRTOS, without being obliged to provide
+	the source code for any proprietary components.  See the licensing section 
+	of http://www.FreeRTOS.org for full details of how and when the exception
+	can be applied.
+
+	***************************************************************************
+	See http://www.FreeRTOS.org for documentation, latest information, license 
+	and contact details.  Please ensure to read the configuration and relevant 
+	port sections of the online documentation.
+	***************************************************************************
+*/
+
+/**
+ * This version of flash .c is for use on systems that have limited stack space
+ * and no display facilities.  The complete version can be found in the 
+ * Demo/Common/Full directory.
+ * 
+ * Three tasks are created, each of which flash an LED at a different rate.  The first 
+ * LED flashes every 200ms, the second every 400ms, the third every 600ms.
+ *
+ * The LED flash tasks provide instant visual feedback.  They show that the scheduler 
+ * is still operational.
+ *
+ * The PC port uses the standard parallel port for outputs, the Flashlite 186 port 
+ * uses IO port F and the AVR port port B.
+ *
+ */
+
+/*
+Changes from V2.0.0
+
+	+ Delay periods are now specified using variables and constants of
+	  portTickType rather than unsigned portLONG.
+
+Changes from V2.5.5
+
+	+ Calls to vTaskDelay() have been replaced with vTaskDelayUntil().
+
+*/
+
+#include <stdlib.h>
+
+/* Scheduler include files. */
+#include "FreeRTOS.h"
+#include "task.h"
+
+/* Demo program include files. */
+#include "partest.h"
+#include "flash.h"
+
+#define ledSTACK_SIZE		configMINIMAL_STACK_SIZE
+#define ledNUMBER_OF_LEDS	( 3 )
+#define ledFLASH_RATE_BASE	( ( portTickType ) 333 )
+
+/* Variable used by the created tasks to calculate the LED number to use, and
+the rate at which they should flash the LED. */
+static volatile unsigned portBASE_TYPE uxFlashTaskNumber = 0;
+
+/* The task that is created three times. */
+static portTASK_FUNCTION_PROTO( vLEDFlashTask, pvParameters );
+
+/*-----------------------------------------------------------*/
+
+void vStartLEDFlashTasks( unsigned portBASE_TYPE uxPriority )
+{
+signed portBASE_TYPE xLEDTask;
+
+	/* Create the three tasks. */
+	for( xLEDTask = 0; xLEDTask < ledNUMBER_OF_LEDS; ++xLEDTask )
+	{
+		/* Spawn the task. */
+		xTaskCreate( vLEDFlashTask, ( const signed portCHAR * const ) "LEDx", ledSTACK_SIZE, NULL, uxPriority, ( xTaskHandle * ) NULL );
+	}
+}
+/*-----------------------------------------------------------*/
+
+static portTASK_FUNCTION( vLEDFlashTask, pvParameters )
+{
+portTickType xFlashRate, xLastFlashTime;
+unsigned portBASE_TYPE uxLED;
+
+	/* The parameters are not used. */
+	( void ) pvParameters;
+
+	/* Calculate the LED and flash rate. */
+	portENTER_CRITICAL();
+	{
+		/* See which of the eight LED's we should use. */
+		uxLED = uxFlashTaskNumber;
+
+		/* Update so the next task uses the next LED. */
+		uxFlashTaskNumber++;
+	}
+	portEXIT_CRITICAL();
+
+	xFlashRate = ledFLASH_RATE_BASE + ( ledFLASH_RATE_BASE * ( portTickType ) uxLED );
+	xFlashRate /= portTICK_RATE_MS;
+
+	/* We will turn the LED on and off again in the delay period, so each
+	delay is only half the total period. */
+	xFlashRate /= ( portTickType ) 2;
+
+	/* We need to initialise xLastFlashTime prior to the first call to 
+	vTaskDelayUntil(). */
+	xLastFlashTime = xTaskGetTickCount();
+
+	for(;;)
+	{
+		/* Delay for half the flash period then turn the LED on. */
+		vTaskDelayUntil( &xLastFlashTime, xFlashRate );
+		vParTestToggleLED( uxLED );
+
+		/* Delay for half the flash period then turn the LED off. */
+		vTaskDelayUntil( &xLastFlashTime, xFlashRate );
+		vParTestToggleLED( uxLED );
+	}
+} /*lint !e715 !e818 !e830 Function definition must be standard for task creation. */
+