mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
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152 lines
6.8 KiB
C
152 lines
6.8 KiB
C
/*
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FreeRTOS V9.0.0rc1 - Copyright (C) 2016 Real Time Engineers Ltd.
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All rights reserved
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VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation >>>> AND MODIFIED BY <<<< the FreeRTOS exception.
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***************************************************************************
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>>! NOTE: The modification to the GPL is included to allow you to !<<
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>>! distribute a combined work that includes FreeRTOS without being !<<
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>>! obliged to provide the source code for proprietary components !<<
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>>! outside of the FreeRTOS kernel. !<<
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***************************************************************************
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. Full license text is available on the following
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link: http://www.freertos.org/a00114.html
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***************************************************************************
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* *
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* FreeRTOS provides completely free yet professionally developed, *
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* robust, strictly quality controlled, supported, and cross *
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* platform software that is more than just the market leader, it *
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* is the industry's de facto standard. *
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* *
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* Help yourself get started quickly while simultaneously helping *
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* to support the FreeRTOS project by purchasing a FreeRTOS *
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* tutorial book, reference manual, or both: *
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* http://www.FreeRTOS.org/Documentation *
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* *
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***************************************************************************
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http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
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the FAQ page "My application does not run, what could be wrong?". Have you
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defined configASSERT()?
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http://www.FreeRTOS.org/support - In return for receiving this top quality
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embedded software for free we request you assist our global community by
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participating in the support forum.
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http://www.FreeRTOS.org/training - Investing in training allows your team to
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be as productive as possible as early as possible. Now you can receive
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FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
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Ltd, and the world's leading authority on the world's leading RTOS.
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http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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compatible FAT file system, and our tiny thread aware UDP/IP stack.
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http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
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Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
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http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
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Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
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licenses offer ticketed support, indemnification and commercial middleware.
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http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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engineered and independently SIL3 certified version for use in safety and
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mission critical applications that require provable dependability.
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1 tab == 4 spaces!
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*/
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/* FreeRTOS includes. */
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#include "FreeRTOS.h"
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/* Standard demo includes. */
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#include "IntQueueTimer.h"
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#include "IntQueue.h"
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/* Microchip includes. */
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#include "MEC14xx/mec14xx_timers.h"
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#include "MEC14xx/mec14xx_jtvic.h"
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#include "MEC14xx/mec14xx.h"
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/* The frequency of the two timers is offset so the time between the timers
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expiring is not always the same. */
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#define timerINTERRUPT0_FREQUENCY ( 2000UL )
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#define timerINTERRUPT1_FREQUENCY ( 2221UL )
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/* MEC14xx JTVIC external interrupt controller is mapped to M14K closely-coupled
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peripheral space. */
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#define portMMCR_JTVIC_GIRQ23_PRIA *((volatile uint32_t *)(0xBFFFC3F0ul))
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/*-----------------------------------------------------------*/
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/* These are the C handlers called from the asm wrappers. */
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void vT0InterruptHandler( void );
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void vT1InterruptHandler( void );
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/*-----------------------------------------------------------*/
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void vInitialiseTimerForIntQueueTest( void )
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{
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/* Timer RT is used for the tick interrupt, timer 3 is used for the high
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frequency interrupt test. This file therefore uses timers 0 and 1. */
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uint32_t ulPreload = ( unsigned short ) ( ( configPERIPHERAL_CLOCK_HZ / ( unsigned long ) timerINTERRUPT0_FREQUENCY ) );
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btmr_sleep_en( BTMR0_ID, 0 );
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btmr_init( BTMR0_ID, BTMR_COUNT_DOWN + BTMR_AUTO_RESTART + BTMR_INT_EN, 0, ulPreload, ulPreload );
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btmr_start( BTMR0_ID );
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jtvic_clr_source( MEC14xx_GIRQ23_ID, 0 );
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portMMCR_JTVIC_GIRQ23_PRIA &= ~( 0x0Ful << 0 );
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portMMCR_JTVIC_GIRQ23_PRIA |= ( ( portIPL_TO_CODE( configMAX_SYSCALL_INTERRUPT_PRIORITY ) ) << 0 );
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jtvic_en_source( MEC14xx_GIRQ23_ID, 0, pdTRUE );
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ulPreload = ( unsigned short ) ( ( configPERIPHERAL_CLOCK_HZ / ( unsigned long ) timerINTERRUPT1_FREQUENCY ) );
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btmr_sleep_en( BTMR1_ID, 0 );
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btmr_init( BTMR1_ID, BTMR_COUNT_DOWN + BTMR_AUTO_RESTART + BTMR_INT_EN, 0, ulPreload, ulPreload );
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btmr_start( BTMR1_ID );
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jtvic_clr_source( MEC14xx_GIRQ23_ID, 1 );
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portMMCR_JTVIC_GIRQ23_PRIA &= ~( 0x0Ful << 4 );
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portMMCR_JTVIC_GIRQ23_PRIA |= ( ( portIPL_TO_CODE( configMAX_SYSCALL_INTERRUPT_PRIORITY ) ) << 4 );
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jtvic_en_source( MEC14xx_GIRQ23_ID, 1, pdTRUE );
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}
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/*-----------------------------------------------------------*/
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void vT0InterruptHandler( void )
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{
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/* Disable all interrupts because the source bit is shared with a bit used
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by the other timer and the high frequency timer test. */
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__asm volatile( "di" );
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/* Clear the timer interrupt. */
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jtvic_clr_source( MEC14xx_GIRQ23_ID, 0 );
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__asm volatile( "ei" );
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portEND_SWITCHING_ISR( xFirstTimerHandler() );
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}
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/*-----------------------------------------------------------*/
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void vT1InterruptHandler( void )
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{
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/* Disable all interrupts because the source bit is shared with a bit used
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by the other timer and the high frequency timer test. */
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__asm volatile( "di" );
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/* Clear the timer interrupt. */
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jtvic_clr_source( MEC14xx_GIRQ23_ID, 1 );
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__asm volatile( "ei" );
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portEND_SWITCHING_ISR( xSecondTimerHandler() );
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}
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