len0rd/FreeRTOS-Kernel
1
0
Fork 0
mirror of https://github.com/FreeRTOS/FreeRTOS-Kernel.git synced 2025-09-01 11:53:53 -04:00
Code Issues Projects Releases Packages Wiki Activity

Add FreeRTOS-Plus directory.

Browse source
This commit is contained in:
Richard Barry 2012-08-11 21:34:11 +00:00
parent 7bd5f21ad5
commit f508a5f653
6798 changed files with 134949 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

176
FreeRTOS/Source/portable/IAR/MSP430X/portext.s43 Normal file
View file

@ -0,0 +1,176 @@
/*
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.
*/
#include "msp430.h"
#include "FreeRTOSConfig.h"
#include "data_model.h"
IMPORT vTaskIncrementTick
IMPORT vTaskSwitchContext
IMPORT vPortSetupTimerInterrupt
IMPORT pxCurrentTCB
IMPORT usCriticalNesting
EXPORT vPortTickISR
EXPORT vPortYield
EXPORT xPortStartScheduler
portSAVE_CONTEXT macro
/* Save the remaining registers. */
pushm_x #12, r15
mov.w &usCriticalNesting, r14
push_x r14
mov_x &pxCurrentTCB, r12
mov_x sp, 0( r12 )
endm
/*-----------------------------------------------------------*/
portRESTORE_CONTEXT macro
mov_x &pxCurrentTCB, r12
mov_x @r12, sp
pop_x r15
mov.w r15, &usCriticalNesting
popm_x #12, r15
pop.w sr
reta
endm
/*-----------------------------------------------------------*/
/*
* The RTOS tick ISR.
*
* If the cooperative scheduler is in use this simply increments the tick
* count.
*
* If the preemptive scheduler is in use a context switch can also occur.
*/
RSEG CODE
EVEN
vPortTickISR:
/* The sr is not saved in portSAVE_CONTEXT() because vPortYield() needs
to save it manually before it gets modified (interrupts get disabled).
Entering through this interrupt means the SR is already on the stack, but
this keeps the stack frames identical. */
push.w sr
portSAVE_CONTEXT
calla #vTaskIncrementTick
#if configUSE_PREEMPTION == 1
calla #vTaskSwitchContext
#endif
portRESTORE_CONTEXT
/*-----------------------------------------------------------*/
/*
* Manual context switch called by the portYIELD() macro.
*/
EVEN
vPortYield:
/* The sr needs saving before it is modified. */
push.w sr
/* Now the SR is stacked we can disable interrupts. */
dint
nop
/* Save the context of the current task. */
portSAVE_CONTEXT
/* Select the next task to run. */
calla #vTaskSwitchContext
/* Restore the context of the new task. */
portRESTORE_CONTEXT
/*-----------------------------------------------------------*/
/*
* Start off the scheduler by initialising the RTOS tick timer, then restoring
* the context of the first task.
*/
EVEN
xPortStartScheduler:
/* Setup the hardware to generate the tick. Interrupts are disabled
when this function is called. */
calla #vPortSetupTimerInterrupt
/* Restore the context of the first task that is going to run. */
portRESTORE_CONTEXT
/*-----------------------------------------------------------*/
END