2 * FreeRTOS Kernel V10.0.0
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3 * Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
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6 * this software and associated documentation files (the "Software"), to deal in
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7 * the Software without restriction, including without limitation the rights to
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8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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9 * the Software, and to permit persons to whom the Software is furnished to do so,
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10 * subject to the following conditions:
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12 * The above copyright notice and this permission notice shall be included in all
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13 * copies or substantial portions of the Software. If you wish to use our Amazon
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14 * FreeRTOS name, please do so in a fair use way that does not cause confusion.
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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18 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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19 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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20 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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23 * http://www.FreeRTOS.org
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24 * http://aws.amazon.com/freertos
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26 * 1 tab == 4 spaces!
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30 * This file implements functions to access and manipulate the PIC32 hardware
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31 * without reliance on third party library functions that may be liable to
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35 /* FreeRTOS includes. */
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36 #include "FreeRTOS.h"
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38 /* Demo includes. */
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39 #include "ConfigPerformance.h"
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41 #define hwUNLOCK_KEY_0 ( 0xAA996655UL )
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42 #define hwUNLOCK_KEY_1 ( 0x556699AAUL )
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44 /*-----------------------------------------------------------*/
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46 void vHardwareConfigurePerformance( void )
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48 /* set PBCLK2 to deliver 40Mhz clock for PMP/I2C/UART/SPI. */
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49 SYSKEY = hwUNLOCK_KEY_0;
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50 SYSKEY = hwUNLOCK_KEY_1;
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52 /* 200MHz / 5 = 40MHz */
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53 PB2DIVbits.PBDIV = 0b100;
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55 /* Timers use clock PBCLK3, set this to 40MHz. */
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56 PB3DIVbits.PBDIV = 0b100;
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58 /* Ports use PBCLK4. */
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59 PB4DIVbits.PBDIV = 0b000;
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63 /* Disable interrupts - note taskDISABLE_INTERRUPTS() cannot be used here as
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64 FreeRTOS does not globally disable interrupt. */
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65 __builtin_disable_interrupts();
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67 /*-----------------------------------------------------------*/
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69 void vHardwareUseMultiVectoredInterrupts( void )
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71 /* Enable multi-vector interrupts. */
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72 _CP0_BIS_CAUSE( 0x00800000U );
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73 INTCONSET = _INTCON_MVEC_MASK;
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74 __builtin_enable_interrupts();
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