/* FreeRTOS V7.2.0 - 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. */ RSEG CODE:CODE(2) thumb EXTERN ulRegTest1LoopCounter EXTERN ulRegTest2LoopCounter PUBLIC vRegTest1Task PUBLIC vRegTest2Task /*-----------------------------------------------------------*/ vRegTest1Task /* Fill the core registers with known values. This is only done once. */ movs r1, #101 movs r2, #102 movs r3, #103 movs r4, #104 movs r5, #105 movs r6, #106 movs r7, #107 movs r0, #108 mov r8, r0 movs r0, #109 mov r9, r0 movs r0, #110 mov r10, r0 movs r0, #111 mov r11, r0 movs r0, #112 mov r12, r0 movs r0, #100 reg1_loop /* Repeatedly check that each register still contains the value written to it when the task started. */ cmp r0, #100 bne reg1_error_loop cmp r1, #101 bne reg1_error_loop cmp r2, #102 bne reg1_error_loop cmp r3, #103 bne reg1_error_loop cmp r4, #104 bne reg1_error_loop cmp r5, #105 bne reg1_error_loop cmp r6, #106 bne reg1_error_loop cmp r7, #107 bne reg1_error_loop movs r0, #108 cmp r8, r0 bne reg1_error_loop movs r0, #109 cmp r9, r0 bne reg1_error_loop movs r0, #110 cmp r10, r0 bne reg1_error_loop movs r0, #111 cmp r11, r0 bne reg1_error_loop movs r0, #112 cmp r12, r0 bne reg1_error_loop /* Everything passed, increment the loop counter. */ push { r1 } ldr r0, =ulRegTest1LoopCounter ldr r1, [r0] adds r1, r1, #1 str r1, [r0] pop { r1 } /* Start again. */ movs r0, #100 b reg1_loop reg1_error_loop /* If this line is hit then there was an error in a core register value. The loop ensures the loop counter stops incrementing. */ b reg1_error_loop nop vRegTest2Task /* Fill the core registers with known values. This is only done once. */ movs r1, #1 movs r2, #2 movs r3, #3 movs r4, #4 movs r5, #5 movs r6, #6 movs r7, #7 movs r0, #8 mov r8, r0 movs r0, #9 mov r9, r0 movs r0, #10 mov r10, r0 movs r0, #11 mov r11, r0 movs r0, #12 mov r12, r0 movs r0, #10 reg2_loop /* Repeatedly check that each register still contains the value written to it when the task started. */ cmp r0, #10 bne reg2_error_loop cmp r1, #1 bne reg2_error_loop cmp r2, #2 bne reg2_error_loop cmp r3, #3 bne reg2_error_loop cmp r4, #4 bne reg2_error_loop cmp r5, #5 bne reg2_error_loop cmp r6, #6 bne reg2_error_loop cmp r7, #7 bne reg2_error_loop movs r0, #8 cmp r8, r0 bne reg2_error_loop movs r0, #9 cmp r9, r0 bne reg2_error_loop movs r0, #10 cmp r10, r0 bne reg2_error_loop movs r0, #11 cmp r11, r0 bne reg2_error_loop movs r0, #12 cmp r12, r0 bne reg2_error_loop /* Everything passed, increment the loop counter. */ push { r1 } ldr r0, =ulRegTest2LoopCounter ldr r1, [r0] adds r1, r1, #1 str r1, [r0] pop { r1 } /* Start again. */ movs r0, #10 b reg2_loop reg2_error_loop /* If this line is hit then there was an error in a core register value. The loop ensures the loop counter stops incrementing. */ b reg2_error_loop nop END