[修改] 增加freeRTOS

1. 版本FreeRTOSv202212.01，命名为kernel；

kernel/FreeRTOS/Demo/PIC32MZ_MPLAB/ConfigPerformance.c

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+/*
+ * FreeRTOS V202212.01
+ * 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.
+ *
+ * https://www.FreeRTOS.org
+ * https://github.com/FreeRTOS
+ *
+ */
+
+/*
+ * 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();
+}
+
+
+
+