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/*
* FreeRTOS V202107.00
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* http://www.FreeRTOS.org
* http://aws.amazon.com/freertos
*
* 1 tab == 4 spaces!
*/
/*
* This file implements functions to access and manipulate the PIC32 hardware
* without reliance on third party library functions that may be liable to
* change.
*/
/* FreeRTOS includes. */
#include "FreeRTOS.h"
/* Demo includes. */
#include "ConfigPerformance.h"
#define hwUNLOCK_KEY_0 ( 0xAA996655UL )
#define hwUNLOCK_KEY_1 ( 0x556699AAUL )
/*-----------------------------------------------------------*/
void vHardwareConfigurePerformance( void )
{
/* set PBCLK2 to deliver 40Mhz clock for PMP/I2C/UART/SPI. */
SYSKEY = hwUNLOCK_KEY_0;
SYSKEY = hwUNLOCK_KEY_1;
/* 200MHz / 5 = 40MHz */
PB2DIVbits.PBDIV = 0b100;
/* Timers use clock PBCLK3, set this to 40MHz. */
PB3DIVbits.PBDIV = 0b100;
/* Ports use PBCLK4. */
PB4DIVbits.PBDIV = 0b000;
SYSKEY = 0;
/* Disable interrupts - note taskDISABLE_INTERRUPTS() cannot be used here as
FreeRTOS does not globally disable interrupt. */
__builtin_disable_interrupts();
}
/*-----------------------------------------------------------*/
void vHardwareUseMultiVectoredInterrupts( void )
{
/* Enable multi-vector interrupts. */
_CP0_BIS_CAUSE( 0x00800000U );
INTCONSET = _INTCON_MVEC_MASK;
__builtin_enable_interrupts();
}
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