Add an example ISR implementation into the RL78 GCC demo.
Richard Barry
12 years ago
parent
c79a5fe50c
commit
7fb22e27da
@ -0,0 +1,121 @@
|
||||
/*
|
||||
FreeRTOS V7.4.0 - Copyright (C) 2013 Real Time Engineers Ltd.
|
||||
|
||||
FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT
|
||||
http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* 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 itcan be
|
||||
viewed here: http://www.freertos.org/a00114.html and also obtained by
|
||||
writing to Real Time Engineers Ltd., 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, books, training, latest versions,
|
||||
license and Real Time Engineers Ltd. contact details.
|
||||
|
||||
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
|
||||
including FreeRTOS+Trace - an indispensable productivity tool, and our new
|
||||
fully thread aware and reentrant UDP/IP stack.
|
||||
|
||||
http://www.OpenRTOS.com - 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.SafeRTOS.com - High Integrity Systems also provide a safety
|
||||
engineered and independently SIL3 certified version for use in safety and
|
||||
mission critical applications that require provable dependability.
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file defines the RegTest tasks as described at the top of main.c
|
||||
*/
|
||||
|
||||
/* ISR_Support.h contains the definitions of portSAVE_CONTEXT() and
|
||||
portRESTORE_CONTEXT(). */
|
||||
#include "ISR_Support.h"
|
||||
|
||||
.global _vANExampleISR_ASM_Wrapper
|
||||
.extern _vAnExampleISR_C_Handler
|
||||
|
||||
.text
|
||||
|
||||
/*
|
||||
* This demo does not include a functional interrupt service routine - so
|
||||
* this dummy handler (which is not actually installed) is provided as an
|
||||
* example of how an ISR that needs to cause a context switch needs to be
|
||||
* implemented. ISRs that do not cause a context switch have no special
|
||||
* requirements and can be written as per the compiler documentation.
|
||||
*
|
||||
* This assembly wrapper function calls the main handler, which is called
|
||||
* vAnExampleISR_C_Handler(), and is implemented in main.c. See the
|
||||
* documentation page for this demo on the FreeRTOS.org website for full
|
||||
* instructions.
|
||||
*
|
||||
* NOTE: vANExampleISR_ASM_Wrapper needs to be installed into the relevant
|
||||
* vector within vector_table.c.
|
||||
*/
|
||||
|
||||
vANExampleISR_ASM_Wrapper:
|
||||
|
||||
/* portSAVE_CONTEXT() must be the first thing called in the ASM
|
||||
wrapper. */
|
||||
portSAVE_CONTEXT
|
||||
|
||||
/* Once the context has been saved the C handler can be called. */
|
||||
call !!_vAnExampleISR_C_Handler
|
||||
|
||||
/* Finally the ISR must end with a call to portRESTORE_CONTEXT()
|
||||
followed by a reti instruction to return from the interrupt to whichever
|
||||
task is now the task selected to run (which may be different to the task
|
||||
that was running before the interrupt started). */
|
||||
portRESTORE_CONTEXT
|
||||
reti
|
||||
|
||||
.end
|
||||
|
||||
Loading…
Reference in New Issue