Get the trace utility and co-routines working.
Richard Barry
17 years ago
parent
91a1b614f8
commit
c8b4248e5d
@ -0,0 +1,230 @@
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/*
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FreeRTOS.org V4.7.1 - Copyright (C) 2003-2008 Richard Barry.
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This file is part of the FreeRTOS.org distribution.
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FreeRTOS.org is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FreeRTOS.org is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FreeRTOS.org; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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A special exception to the GPL can be applied should you wish to distribute
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a combined work that includes FreeRTOS.org, without being obliged to provide
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the source code for any proprietary components. See the licensing section
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of http://www.FreeRTOS.org for full details of how and when the exception
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can be applied.
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***************************************************************************
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Please ensure to read the configuration and relevant port sections of the
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online documentation.
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+++ http://www.FreeRTOS.org +++
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Documentation, latest information, license and contact details.
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+++ http://www.SafeRTOS.com +++
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A version that is certified for use in safety critical systems.
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+++ http://www.OpenRTOS.com +++
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Commercial support, development, porting, licensing and training services.
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***************************************************************************
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*/
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/*
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* This demo application file demonstrates the use of queues to pass data
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* between co-routines.
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*
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* N represents the number of 'fixed delay' co-routines that are created and
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* is set during initialisation.
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*
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* N 'fixed delay' co-routines are created that just block for a fixed
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* period then post the number of an LED onto a queue. Each such co-routine
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* uses a different block period. A single 'flash' co-routine is also created
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* that blocks on the same queue, waiting for the number of the next LED it
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* should flash. Upon receiving a number it simply toggle the instructed LED
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* then blocks on the queue once more. In this manner each LED from LED 0 to
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* LED N-1 is caused to flash at a different rate.
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*
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* The 'fixed delay' co-routines are created with co-routine priority 0. The
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* flash co-routine is created with co-routine priority 1. This means that
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* the queue should never contain more than a single item. This is because
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* posting to the queue will unblock the 'flash' co-routine, and as this has
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* a priority greater than the tasks posting to the queue it is guaranteed to
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* have emptied the queue and blocked once again before the queue can contain
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* any more date. An error is indicated if an attempt to post data to the
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* queue fails - indicating that the queue is already full.
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*
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*/
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/* Scheduler includes. */
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#include "FreeRTOS.h"
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#include "croutine.h"
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#include "queue.h"
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/* Demo application includes. */
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#include "partest.h"
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#include "crflash.h"
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/* The queue should only need to be of length 1. See the description at the
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top of the file. */
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#define crfQUEUE_LENGTH 1
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#define crfFIXED_DELAY_PRIORITY 0
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#define crfFLASH_PRIORITY 1
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/* Only one flash co-routine is created so the index is not significant. */
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#define crfFLASH_INDEX 0
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/* Don't allow more than crfMAX_FLASH_TASKS 'fixed delay' co-routines to be
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created. */
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#define crfMAX_FLASH_TASKS 8
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/* We don't want to block when posting to the queue. */
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#define crfPOSTING_BLOCK_TIME 0
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/* Added by MPi, this define is added in order to make the vParTestToggleLED()
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work. This basically differentiates the PDR09 from PDR00. 7-seg display LEDs connected
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to PDR09 (SEG1) are used by the prvFlashCoRoutine() and PDR00 (SEG2) are used by tasks. */
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#define PDR00_Offset 8
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/*
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* The 'fixed delay' co-routine as described at the top of the file.
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*/
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static void prvFixedDelayCoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex );
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/*
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* The 'flash' co-routine as described at the top of the file.
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*/
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static void prvFlashCoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex );
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/* The queue used to pass data between the 'fixed delay' co-routines and the
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'flash' co-routine. */
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static xQueueHandle xFlashQueue;
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/* This will be set to pdFALSE if we detect an error. */
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static unsigned portBASE_TYPE uxCoRoutineFlashStatus = pdPASS;
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/*-----------------------------------------------------------*/
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/*
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* See the header file for details.
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*/
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void vStartFlashCoRoutines( unsigned portBASE_TYPE uxNumberToCreate )
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{
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unsigned portBASE_TYPE uxIndex;
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if( uxNumberToCreate > crfMAX_FLASH_TASKS )
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{
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uxNumberToCreate = crfMAX_FLASH_TASKS;
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}
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/* Create the queue used to pass data between the co-routines. */
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xFlashQueue = xQueueCreate( crfQUEUE_LENGTH, sizeof( unsigned portBASE_TYPE ) );
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if( xFlashQueue )
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{
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/* Create uxNumberToCreate 'fixed delay' co-routines. */
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for( uxIndex = 0; uxIndex < uxNumberToCreate; uxIndex++ )
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{
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xCoRoutineCreate( prvFixedDelayCoRoutine, crfFIXED_DELAY_PRIORITY, uxIndex );
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}
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/* Create the 'flash' co-routine. */
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xCoRoutineCreate( prvFlashCoRoutine, crfFLASH_PRIORITY, crfFLASH_INDEX );
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}
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}
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/*-----------------------------------------------------------*/
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static void prvFixedDelayCoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
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{
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/* Even though this is a co-routine the xResult variable does not need to be
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static as we do not need it to maintain its state between blocks. */
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signed portBASE_TYPE xResult;
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/* The uxIndex parameter of the co-routine function is used as an index into
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the xFlashRates array to obtain the delay period to use. */
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static const portTickType xFlashRates[ crfMAX_FLASH_TASKS ] = { 150 / portTICK_RATE_MS,
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200 / portTICK_RATE_MS,
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250 / portTICK_RATE_MS,
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300 / portTICK_RATE_MS,
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350 / portTICK_RATE_MS,
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400 / portTICK_RATE_MS,
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450 / portTICK_RATE_MS,
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500 / portTICK_RATE_MS };
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/* Co-routines MUST start with a call to crSTART. */
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crSTART( xHandle );
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for( ;; )
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{
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/* Post our uxIndex value onto the queue. This is used as the LED to
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flash. */
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crQUEUE_SEND( xHandle, xFlashQueue, ( void * ) &uxIndex, crfPOSTING_BLOCK_TIME, &xResult );
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if( xResult != pdPASS )
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{
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/* For the reasons stated at the top of the file we should always
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find that we can post to the queue. If we could not then an error
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has occurred. */
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uxCoRoutineFlashStatus = pdFAIL;
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}
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crDELAY( xHandle, xFlashRates[ uxIndex ] );
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}
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/* Co-routines MUST end with a call to crEND. */
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crEND();
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}
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/*-----------------------------------------------------------*/
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static void prvFlashCoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
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{
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/* Even though this is a co-routine the variable do not need to be
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static as we do not need it to maintain their state between blocks. */
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signed portBASE_TYPE xResult;
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unsigned portBASE_TYPE uxLEDToFlash;
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/* Co-routines MUST start with a call to crSTART. */
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crSTART( xHandle );
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( void ) uxIndex;
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for( ;; )
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{
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/* Block to wait for the number of the LED to flash. */
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crQUEUE_RECEIVE( xHandle, xFlashQueue, &uxLEDToFlash, portMAX_DELAY, &xResult );
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if( xResult != pdPASS )
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{
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/* We would not expect to wake unless we received something. */
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uxCoRoutineFlashStatus = pdFAIL;
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}
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else
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{
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/* We received the number of an LED to flash - flash it! */
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/* Added by MPi, PDR00_Offset is added in order to make the
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vParTestToggleLED() work. */
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vParTestToggleLED( uxLEDToFlash + PDR00_Offset );
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}
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}
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/* Co-routines MUST end with a call to crEND. */
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crEND();
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}
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/*-----------------------------------------------------------*/
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portBASE_TYPE xAreFlashCoRoutinesStillRunning( void )
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{
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/* Return pdPASS or pdFAIL depending on whether an error has been detected
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or not. */
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return uxCoRoutineFlashStatus;
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}
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@ -0,0 +1,286 @@
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/*
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Copyright 2001, 2002 Georges Menie (www.menie.org)
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stdarg version contributed by Christian Ettinger
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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putchar is the only external dependency for this file,
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if you have a working putchar, leave it commented out.
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If not, uncomment the define below and
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replace outbyte(c) by your own function call.
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#define putchar(c) outbyte(c)
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*/
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#include <stdarg.h>
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static void printchar(char **str, int c)
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{
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extern int putchar(int c);
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if (str) {
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**str = c;
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++(*str);
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}
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else (void)putchar(c);
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}
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#define PAD_RIGHT 1
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#define PAD_ZERO 2
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static int prints(char **out, const char *string, int width, int pad)
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{
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register int pc = 0, padchar = ' ';
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if (width > 0) {
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register int len = 0;
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register const char *ptr;
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for (ptr = string; *ptr; ++ptr) ++len;
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if (len >= width) width = 0;
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else width -= len;
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if (pad & PAD_ZERO) padchar = '0';
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}
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if (!(pad & PAD_RIGHT)) {
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for ( ; width > 0; --width) {
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printchar (out, padchar);
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++pc;
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}
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}
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for ( ; *string ; ++string) {
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printchar (out, *string);
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++pc;
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}
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for ( ; width > 0; --width) {
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printchar (out, padchar);
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++pc;
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}
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return pc;
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}
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/* the following should be enough for 32 bit int */
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#define PRINT_BUF_LEN 12
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static int printi(char **out, int i, int b, int sg, int width, int pad, int letbase)
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{
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char print_buf[PRINT_BUF_LEN];
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register char *s;
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register int t, neg = 0, pc = 0;
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register unsigned int u = i;
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if (i == 0) {
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print_buf[0] = '0';
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print_buf[1] = '\0';
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return prints (out, print_buf, width, pad);
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}
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if (sg && b == 10 && i < 0) {
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neg = 1;
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u = -i;
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}
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s = print_buf + PRINT_BUF_LEN-1;
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*s = '\0';
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while (u) {
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t = u % b;
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if( t >= 10 )
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t += letbase - '0' - 10;
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*--s = t + '0';
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u /= b;
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}
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if (neg) {
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if( width && (pad & PAD_ZERO) ) {
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printchar (out, '-');
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++pc;
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--width;
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}
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else {
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*--s = '-';
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}
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}
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return pc + prints (out, s, width, pad);
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}
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static int print( char **out, const char *format, va_list args )
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{
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register int width, pad;
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register int pc = 0;
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char scr[2];
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for (; *format != 0; ++format) {
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if (*format == '%') {
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++format;
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width = pad = 0;
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if (*format == '\0') break;
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if (*format == '%') goto out;
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if (*format == '-') {
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++format;
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pad = PAD_RIGHT;
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}
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while (*format == '0') {
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++format;
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pad |= PAD_ZERO;
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}
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for ( ; *format >= '0' && *format <= '9'; ++format) {
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width *= 10;
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width += *format - '0';
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}
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if( *format == 's' ) {
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register char *s = (char *)va_arg( args, int );
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pc += prints (out, s?s:"(null)", width, pad);
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continue;
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}
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if( *format == 'd' ) {
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pc += printi (out, va_arg( args, int ), 10, 1, width, pad, 'a');
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continue;
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}
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if( *format == 'x' ) {
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pc += printi (out, va_arg( args, int ), 16, 0, width, pad, 'a');
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continue;
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}
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if( *format == 'X' ) {
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pc += printi (out, va_arg( args, int ), 16, 0, width, pad, 'A');
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continue;
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}
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if( *format == 'u' ) {
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pc += printi (out, va_arg( args, int ), 10, 0, width, pad, 'a');
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continue;
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}
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if( *format == 'c' ) {
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/* char are converted to int then pushed on the stack */
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scr[0] = (char)va_arg( args, int );
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scr[1] = '\0';
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pc += prints (out, scr, width, pad);
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continue;
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}
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}
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else {
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out:
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printchar (out, *format);
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++pc;
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}
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}
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if (out) **out = '\0';
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va_end( args );
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return pc;
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}
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int printf(const char *format, ...)
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{
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va_list args;
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va_start( args, format );
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return print( 0, format, args );
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}
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int sprintf(char *out, const char *format, ...)
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{
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va_list args;
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va_start( args, format );
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return print( &out, format, args );
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}
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int snprintf( char *buf, unsigned int count, const char *format, ... )
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{
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va_list args;
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( void ) count;
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va_start( args, format );
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return print( &buf, format, args );
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}
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#ifdef TEST_PRINTF
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int main(void)
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{
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char *ptr = "Hello world!";
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char *np = 0;
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int i = 5;
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unsigned int bs = sizeof(int)*8;
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int mi;
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char buf[80];
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mi = (1 << (bs-1)) + 1;
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printf("%s\n", ptr);
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printf("printf test\n");
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printf("%s is null pointer\n", np);
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printf("%d = 5\n", i);
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printf("%d = - max int\n", mi);
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printf("char %c = 'a'\n", 'a');
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printf("hex %x = ff\n", 0xff);
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printf("hex %02x = 00\n", 0);
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printf("signed %d = unsigned %u = hex %x\n", -3, -3, -3);
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printf("%d %s(s)%", 0, "message");
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printf("\n");
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printf("%d %s(s) with %%\n", 0, "message");
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sprintf(buf, "justif: \"%-10s\"\n", "left"); printf("%s", buf);
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sprintf(buf, "justif: \"%10s\"\n", "right"); printf("%s", buf);
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sprintf(buf, " 3: %04d zero padded\n", 3); printf("%s", buf);
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sprintf(buf, " 3: %-4d left justif.\n", 3); printf("%s", buf);
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sprintf(buf, " 3: %4d right justif.\n", 3); printf("%s", buf);
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sprintf(buf, "-3: %04d zero padded\n", -3); printf("%s", buf);
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sprintf(buf, "-3: %-4d left justif.\n", -3); printf("%s", buf);
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sprintf(buf, "-3: %4d right justif.\n", -3); printf("%s", buf);
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return 0;
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}
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/*
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* if you compile this file with
|
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* gcc -Wall $(YOUR_C_OPTIONS) -DTEST_PRINTF -c printf.c
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* you will get a normal warning:
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* printf.c:214: warning: spurious trailing `%' in format
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* this line is testing an invalid % at the end of the format string.
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*
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* this should display (on 32bit int machine) :
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*
|
||||
* Hello world!
|
||||
* printf test
|
||||
* (null) is null pointer
|
||||
* 5 = 5
|
||||
* -2147483647 = - max int
|
||||
* char a = 'a'
|
||||
* hex ff = ff
|
||||
* hex 00 = 00
|
||||
* signed -3 = unsigned 4294967293 = hex fffffffd
|
||||
* 0 message(s)
|
||||
* 0 message(s) with %
|
||||
* justif: "left "
|
||||
* justif: " right"
|
||||
* 3: 0003 zero padded
|
||||
* 3: 3 left justif.
|
||||
* 3: 3 right justif.
|
||||
* -3: -003 zero padded
|
||||
* -3: -3 left justif.
|
||||
* -3: -3 right justif.
|
||||
*/
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
/* To keep linker happy. */
|
||||
int write( int i, char* c, int n)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue