[修改] 增加freeRTOS

1. 版本FreeRTOSv202212.01，命名为kernel；

kernel/FreeRTOS/Demo/AVR_ATMega323_WinAVR/ParTest/ParTest.c

@@ -0,0 +1,118 @@
+/*
+ * 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
+ *
+ */
+
+/*
+Changes from V2.0.0
+
+	+ Use scheduler suspends in place of critical sections.
+
+Changes from V2.6.0
+
+	+ Replaced the inb() and outb() functions with direct memory
+	  access.  This allows the port to be built with the 20050414 build of
+	  WinAVR.
+*/
+
+#include "FreeRTOS.h"
+#include "task.h"
+#include "partest.h"
+#include <avr/io.h>
+
+/*-----------------------------------------------------------
+ * Simple parallel port IO routines.
+ *-----------------------------------------------------------*/
+
+#define partstALL_BITS_OUTPUT			( ( unsigned char ) 0xff )
+#define partstALL_OUTPUTS_OFF			( ( unsigned char ) 0xff )
+#define partstMAX_OUTPUT_LED			( ( unsigned char ) 7 )
+
+static volatile unsigned char ucCurrentOutputValue = partstALL_OUTPUTS_OFF; /*lint !e956 File scope parameters okay here. */
+
+/*-----------------------------------------------------------*/
+
+void vParTestInitialise( void )
+{
+	ucCurrentOutputValue = partstALL_OUTPUTS_OFF;
+
+	/* Set port B direction to outputs.  Start with all output off. */
+	DDRB = partstALL_BITS_OUTPUT;
+	PORTB = ucCurrentOutputValue;
+}
+/*-----------------------------------------------------------*/
+
+void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
+{
+unsigned char ucBit = ( unsigned char ) 1;
+
+	if( uxLED <= partstMAX_OUTPUT_LED )
+	{
+		ucBit <<= uxLED;
+
+		vTaskSuspendAll();
+		{
+			if( xValue == pdTRUE )
+			{
+				ucBit ^= ( unsigned char ) 0xff;
+				ucCurrentOutputValue &= ucBit;
+			}
+			else
+			{
+				ucCurrentOutputValue |= ucBit;
+			}
+
+			PORTB = ucCurrentOutputValue;
+		}
+		xTaskResumeAll();
+	}
+}
+/*-----------------------------------------------------------*/
+
+void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
+{
+unsigned char ucBit;
+
+	if( uxLED <= partstMAX_OUTPUT_LED )
+	{
+		ucBit = ( ( unsigned char ) 1 ) << uxLED;
+
+		vTaskSuspendAll();
+		{
+			if( ucCurrentOutputValue & ucBit )
+			{
+				ucCurrentOutputValue &= ~ucBit;
+			}
+			else
+			{
+				ucCurrentOutputValue |= ucBit;
+			}
+
+			PORTB = ucCurrentOutputValue;
+		}
+		xTaskResumeAll();
+	}
+}
+
+