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117 lines
4.7 KiB
C
117 lines
4.7 KiB
C
/*
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FreeRTOS V8.0.0 - Copyright (C) 2014 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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***************************************************************************
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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 has become a de facto standard. *
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* *
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* Help yourself get started quickly and support the FreeRTOS *
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* project by purchasing a FreeRTOS tutorial book, reference *
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* manual, or both from: http://www.FreeRTOS.org/Documentation *
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* *
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* Thank you! *
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* *
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***************************************************************************
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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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>>! NOTE: The modification to the GPL is included to allow you to distribute
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>>! a combined work that includes FreeRTOS without being obliged to provide
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>>! the source code for proprietary components outside of the FreeRTOS
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>>! kernel.
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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 from the following
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link: http://www.freertos.org/a00114.html
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1 tab == 4 spaces!
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***************************************************************************
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* *
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* Having a problem? Start by reading the FAQ "My application does *
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* not run, what could be wrong?" *
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* *
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* http://www.FreeRTOS.org/FAQHelp.html *
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* *
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***************************************************************************
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http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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license and Real Time Engineers Ltd. contact details.
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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.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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licenses offer ticketed support, indemnification and 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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/*
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* This file implements functions to access and manipulate the PIC32 hardware
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* without reliance on third party library functions that may be liable to
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* change.
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*/
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/* FreeRTOS includes. */
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#include "FreeRTOS.h"
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/* Demo includes. */
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#include "ConfigPerformance.h"
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#define hwUNLOCK_KEY_0 ( 0xAA996655UL )
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#define hwUNLOCK_KEY_1 ( 0x556699AAUL )
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/*-----------------------------------------------------------*/
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void vHardwareConfigurePerformance( void )
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{
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/* set PBCLK2 to deliver 40Mhz clock for PMP/I2C/UART/SPI. */
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SYSKEY = hwUNLOCK_KEY_0;
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SYSKEY = hwUNLOCK_KEY_1;
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/* 200MHz / 5 = 40MHz */
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PB2DIVbits.PBDIV = 0b100;
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/* Timers use clock PBCLK3, set this to 40MHz. */
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PB3DIVbits.PBDIV = 0b100;
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/* Ports use PBCLK4. */
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PB4DIVbits.PBDIV = 0b000;
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SYSKEY = 0;
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/* Disable interrupts - note taskDISABLE_INTERRUPTS() cannot be used here as
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FreeRTOS does not globally disable interrupt. */
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__builtin_disable_interrupts();
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}
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/*-----------------------------------------------------------*/
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void vHardwareUseMultiVectoredInterrupts( void )
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{
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/* Enable multi-vector interrupts. */
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_CP0_BIS_CAUSE( 0x00800000U );
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INTCONSET = _INTCON_MVEC_MASK;
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__builtin_enable_interrupts();
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}
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