[修改] 增加freeRTOS

1. 版本FreeRTOSv202212.01，命名为kernel；

kernel/FreeRTOS/Demo/MB96350_Softune_Dice_Kit/SegmentToggleTasks.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
+ *
+ */
+
+/**
+ * Defines the tasks used to toggle the segments of the left
+ * seven segment display, as described at the top of main.c
+ */
+
+
+#include <stdlib.h>
+
+/* Scheduler include files. */
+#include "FreeRTOS.h"
+#include "task.h"
+
+/* Demo program include files. */
+#include "partest.h"
+
+/*-----------------------------------------------------------*/
+
+/* One task per segment of the left side display. */
+#define ledNUM_OF_LED_TASKS	( 7 )
+
+/* Each task toggles at a frequency that is a multiple of 333ms. */
+#define ledFLASH_RATE_BASE	( ( TickType_t ) 333 )
+
+/*-----------------------------------------------------------*/
+
+/* The task that is created 7 times. */
+static void vLEDFlashTask( void *pvParameters );
+
+/* Handles to each of the 7 tasks.  Used so the tasks can be suspended
+and resumed. */
+static TaskHandle_t xFlashTaskHandles[ ledNUM_OF_LED_TASKS ] = { 0 };
+
+/*-----------------------------------------------------------*/
+
+/**
+ * Creates the tasks used to toggle the segments of the left
+ * seven segment display, as described at the top of main.c
+ */
+void vCreateFlashTasks( void )
+{
+signed short sLEDTask;
+
+	/* Create the tasks that flash segments on the first LED. */
+	for( sLEDTask = 0; sLEDTask < ledNUM_OF_LED_TASKS; ++sLEDTask )
+	{
+		/* Spawn the task. */
+		xTaskCreate( vLEDFlashTask, "LEDt", configMINIMAL_STACK_SIZE, ( void * ) sLEDTask, ( tskIDLE_PRIORITY + 1 ), &( xFlashTaskHandles[ sLEDTask ] ) );
+	}
+}
+/*-----------------------------------------------------------*/
+
+void vSuspendFlashTasks( unsigned char ucIndex, short sSuspendTasks )
+{
+short sLEDTask;
+
+	if( ucIndex == configLEFT_DISPLAY )
+	{
+		/* Suspend or resume the tasks that are toggling the segments of the
+		left side display. */
+		for( sLEDTask = 0; sLEDTask < ledNUM_OF_LED_TASKS; ++sLEDTask )
+		{
+			if( xFlashTaskHandles[ sLEDTask ] != NULL )
+			{
+				if( sSuspendTasks == pdTRUE )
+				{
+					vTaskSuspend( xFlashTaskHandles[ sLEDTask ] );
+				}
+				else
+				{
+					vTaskResume( xFlashTaskHandles[ sLEDTask ] );
+				}
+			}
+		}
+	}
+}
+/*-----------------------------------------------------------*/
+
+static void vLEDFlashTask( void * pvParameters )
+{
+TickType_t xFlashRate, xLastFlashTime;
+unsigned short usLED;
+
+	/* The LED to flash is passed in as the task parameter. */
+	usLED = ( unsigned short ) pvParameters;
+
+	/* Calculate the rate at which this task is going to toggle its LED. */
+	xFlashRate = ledFLASH_RATE_BASE + ( ledFLASH_RATE_BASE * ( TickType_t ) usLED );
+	xFlashRate /= portTICK_PERIOD_MS;
+
+	/* We will turn the LED on and off again in the delay period, so each
+	delay is only half the total period. */
+	xFlashRate /= ( TickType_t ) 2;
+
+	/* We need to initialise xLastFlashTime prior to the first call to
+	vTaskDelayUntil(). */
+	xLastFlashTime = xTaskGetTickCount();
+
+	for(;;)
+	{
+		/* Delay for half the flash period then turn the LED on. */
+		vTaskDelayUntil( &xLastFlashTime, xFlashRate );
+		vParTestToggleLED( usLED );
+
+		/* Delay for half the flash period then turn the LED off. */
+		vTaskDelayUntil( &xLastFlashTime, xFlashRate );
+		vParTestToggleLED( usLED );
+	}
+}
+
+/*-----------------------------------------------------------*/
+
+