mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-08-19 09:38:32 -04:00
Add FreeRTOS-Plus directory.
This commit is contained in:
Richard Barry
parent
7bd5f21ad5
commit
f508a5f653
6798 changed files with 134949 additions and 19 deletions
195
FreeRTOS/Demo/PIC18_MPLAB/main2.c
Normal file
195
FreeRTOS/Demo/PIC18_MPLAB/main2.c
Normal file
|
|
@ -0,0 +1,195 @@
|
|||
/*
|
||||
FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
|
||||
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* FreeRTOS tutorial books are available in pdf and paperback. *
|
||||
* Complete, revised, and edited pdf reference manuals are also *
|
||||
* available. *
|
||||
* *
|
||||
* Purchasing FreeRTOS documentation will not only help you, by *
|
||||
* ensuring you get running as quickly as possible and with an *
|
||||
* in-depth knowledge of how to use FreeRTOS, it will also help *
|
||||
* the FreeRTOS project to continue with its mission of providing *
|
||||
* professional grade, cross platform, de facto standard solutions *
|
||||
* for microcontrollers - completely free of charge! *
|
||||
* *
|
||||
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
|
||||
* *
|
||||
* Thank you for using FreeRTOS, and thank you for your support! *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
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. See the GNU General Public License for
|
||||
more details. You should have received a copy of the GNU General Public
|
||||
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||
by writing to Richard Barry, contact details for whom are available on the
|
||||
FreeRTOS WEB site.
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* Having a problem? Start by reading the FAQ "My application does *
|
||||
* not run, what could be wrong? *
|
||||
* *
|
||||
* http://www.FreeRTOS.org/FAQHelp.html *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, training, latest information,
|
||||
license and contact details.
|
||||
|
||||
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
|
||||
including FreeRTOS+Trace - an indispensable productivity tool.
|
||||
|
||||
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
|
||||
the code with commercial support, indemnification, and middleware, under
|
||||
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
|
||||
provide a safety engineered and independently SIL3 certified version under
|
||||
the SafeRTOS brand: http://www.SafeRTOS.com.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Instead of the normal single demo application, the PIC18F demo is split
|
||||
* into several smaller programs of which this is the second. This enables the
|
||||
* demo's to be executed on the RAM limited 40 pin devices. The 64 and 80 pin
|
||||
* devices require a more costly development platform and are not so readily
|
||||
* available.
|
||||
*
|
||||
* The RTOSDemo2 project is configured for a PIC18F452 device. Main2.c starts
|
||||
* 5 tasks (including the idle task).
|
||||
*
|
||||
* The first, second and third tasks do nothing but flash an LED. This gives
|
||||
* visual feedback that everything is executing as expected. One task flashes
|
||||
* an LED every 333ms (i.e. on and off every 333/2 ms), then next every 666ms
|
||||
* and the last every 999ms.
|
||||
*
|
||||
* The last task runs at the idle priority. It repeatedly performs a 32bit
|
||||
* calculation and checks it's result against the expected value. This checks
|
||||
* that the temporary storage utilised by the compiler to hold intermediate
|
||||
* results does not get corrupted when the task gets switched in and out.
|
||||
* should the calculation ever provide an incorrect result the final LED is
|
||||
* turned on.
|
||||
*
|
||||
* On entry to main() an 'X' is transmitted. Monitoring the serial port using a
|
||||
* dumb terminal allows for verification that the device is not continuously
|
||||
* being reset (no more than one 'X' should be transmitted).
|
||||
*
|
||||
* http://www.FreeRTOS.org contains important information on the use of the
|
||||
* PIC18F port.
|
||||
*/
|
||||
|
||||
/*
|
||||
Changes from V2.0.0
|
||||
|
||||
+ Delay periods are now specified using variables and constants of
|
||||
portTickType rather than unsigned long.
|
||||
*/
|
||||
|
||||
/* Scheduler include files. */
|
||||
#include "FreeRTOS.h"
|
||||
#include "task.h"
|
||||
|
||||
/* Demo app include files. */
|
||||
#include "flash.h"
|
||||
#include "partest.h"
|
||||
#include "serial.h"
|
||||
|
||||
/* Priority definitions for the LED tasks. Other tasks just use the idle
|
||||
priority. */
|
||||
#define mainLED_FLASH_PRIORITY ( tskIDLE_PRIORITY + ( unsigned portBASE_TYPE ) 1 )
|
||||
|
||||
/* The LED that is lit when should the calculation fail. */
|
||||
#define mainCHECK_TASK_LED ( ( unsigned portBASE_TYPE ) 3 )
|
||||
|
||||
/* Constants required for the communications. Only one character is ever
|
||||
transmitted. */
|
||||
#define mainCOMMS_QUEUE_LENGTH ( ( unsigned portBASE_TYPE ) 5 )
|
||||
#define mainNO_BLOCK ( ( portTickType ) 0 )
|
||||
#define mainBAUD_RATE ( ( unsigned long ) 9600 )
|
||||
|
||||
/*
|
||||
* The task that performs the 32 bit calculation at the idle priority.
|
||||
*/
|
||||
static void vCalculationTask( void *pvParameters );
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Creates the tasks, then starts the scheduler. */
|
||||
void main( void )
|
||||
{
|
||||
/* Initialise the required hardware. */
|
||||
vParTestInitialise();
|
||||
vPortInitialiseBlocks();
|
||||
|
||||
/* Send a character so we have some visible feedback of a reset. */
|
||||
xSerialPortInitMinimal( mainBAUD_RATE, mainCOMMS_QUEUE_LENGTH );
|
||||
xSerialPutChar( NULL, 'X', mainNO_BLOCK );
|
||||
|
||||
/* Start the standard LED flash tasks as defined in demo/common/minimal. */
|
||||
vStartLEDFlashTasks( mainLED_FLASH_PRIORITY );
|
||||
|
||||
/* Start the check task defined in this file. */
|
||||
xTaskCreate( vCalculationTask, ( const char * const ) "Check", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
|
||||
|
||||
/* Start the scheduler. */
|
||||
vTaskStartScheduler();
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void vCalculationTask( void *pvParameters )
|
||||
{
|
||||
volatile unsigned long ulCalculatedValue; /* Volatile to ensure optimisation is minimal. */
|
||||
|
||||
/* Continuously perform a calculation. If the calculation result is ever
|
||||
incorrect turn the LED on. */
|
||||
for( ;; )
|
||||
{
|
||||
/* A good optimising compiler would just remove all this! */
|
||||
ulCalculatedValue = 1234UL;
|
||||
ulCalculatedValue *= 99UL;
|
||||
|
||||
if( ulCalculatedValue != 122166UL )
|
||||
{
|
||||
vParTestSetLED( mainCHECK_TASK_LED, pdTRUE );
|
||||
}
|
||||
|
||||
ulCalculatedValue *= 9876UL;
|
||||
|
||||
if( ulCalculatedValue != 1206511416UL )
|
||||
{
|
||||
vParTestSetLED( mainCHECK_TASK_LED, pdTRUE );
|
||||
}
|
||||
|
||||
ulCalculatedValue /= 15UL;
|
||||
|
||||
if( ulCalculatedValue != 80434094UL )
|
||||
{
|
||||
vParTestSetLED( mainCHECK_TASK_LED, pdTRUE );
|
||||
}
|
||||
|
||||
ulCalculatedValue += 918273UL;
|
||||
|
||||
if( ulCalculatedValue != 81352367UL )
|
||||
{
|
||||
vParTestSetLED( mainCHECK_TASK_LED, pdTRUE );
|
||||
}
|
||||
}
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue