[修改] 增加freeRTOS

1. 版本FreeRTOSv202212.01，命名为kernel；

kernel/FreeRTOS/Demo/PIC32MZ_MPLAB/ParTest/ParTest.c

@@ -0,0 +1,89 @@
+/*
+ * 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
+ *
+ */
+
+/* Scheduler includes. */
+#include "FreeRTOS.h"
+
+/* Demo app includes. */
+#include "partest.h"
+
+#define ptOUTPUT 	0
+#define ptALL_OFF	0
+#define ptNUM_LEDS	3
+
+/*-----------------------------------------------------------
+ * Simple parallel port IO routines.
+ *-----------------------------------------------------------*/
+
+void vParTestInitialise( void )
+{
+	/* All LEDs output. */
+	TRISH = ptOUTPUT;
+	LATH = ptALL_OFF;
+}
+/*-----------------------------------------------------------*/
+
+void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
+{
+unsigned portBASE_TYPE uxLEDBit;
+
+	if( uxLED < ptNUM_LEDS )
+	{
+		/* Which port H bit is being modified? */
+		uxLEDBit = 1 << uxLED;
+
+		if( xValue )
+		{
+			/* Turn the LED on.   Use of the LATHSET register removes the need
+			to use a critical section. */
+			LATHSET = uxLEDBit;
+		}
+		else
+		{
+			/* Turn the LED off.  Use of the LATHCLR register removes the need
+			to use a critical section. */
+			LATHCLR = uxLEDBit;
+		}
+	}
+}
+/*-----------------------------------------------------------*/
+
+void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
+{
+unsigned portBASE_TYPE uxLEDBit;
+
+	if( uxLED < ptNUM_LEDS )
+	{
+		uxLEDBit = 1 << uxLED;
+
+		/* Use of the LATHINV register removes the need to use a critical
+		section. */
+		LATHINV = uxLEDBit;
+	}
+}
+
+
+