Introduce a port for T-HEAD CK802. A simple demo for T-HEAD CB2201 is also included.

FreeRTOS/Demo/T-HEAD_CB2201_CDK/RTOSDemo_CDK/RTOSDemo/main.c

@@ -0,0 +1,123 @@
+/*============================================================================
+ * Name        : main.c
+ * Author      : $(username)
+ * Version     : 0.0.0
+ * Copyright   : Your copyright notice
+ * Description : Simple function in C, Ansi-style
+ *============================================================================
+ */
+
+
+#include "FreeRTOS.h"
+#include "task.h"
+#include "queue.h"
+
+extern void SystemInit(void);
+
+#define mainQUEUE_RECEIVE_TASK_PRIORITY		( tskIDLE_PRIORITY + 2 )
+
+#define	mainQUEUE_SEND_TASK_PRIORITY		( tskIDLE_PRIORITY + 1 )
+
+#define mainQUEUE_SEND_FREQUENCY_MS			( 200 / portTICK_PERIOD_MS )
+
+
+/* The number of items the queue can hold.  This is 1 as the receive task
+
+will remove items as they are added, meaning the send task should always find
+
+the queue empty. */
+
+#define mainQUEUE_LENGTH					( 1 )
+
+static QueueHandle_t xQueue = NULL;
+
+static void prvQueueSendTask( void *pvParameters )
+{
+	TickType_t xNextWakeTime;
+	const unsigned long ulValueToSend = 100UL;
+
+
+	/* Initialise xNextWakeTime - this only needs to be done once. */
+
+	xNextWakeTime = xTaskGetTickCount();
+
+	for( ;; )
+
+	{
+
+		/* Place this task in the blocked state until it is time to run again.
+
+		The block time is specified in ticks, the constant used converts ticks
+
+		to ms.  While in the Blocked state this task will not consume any CPU
+
+		time. */
+
+		vTaskDelayUntil( &xNextWakeTime, mainQUEUE_SEND_FREQUENCY_MS );
+
+
+		/* Send to the queue - causing the queue receive task to unblock and
+
+		toggle an LED.  0 is used as the block time so the sending operation
+
+		will not block - it shouldn't need to block as the queue should always
+
+		be empty at this point in the code. */
+
+		xQueueSend( xQueue, &ulValueToSend, 0 );
+
+	}
+
+}
+
+static void prvQueueReceiveTask( void *pvParameters )
+{
+	unsigned int ulReceivedValue;
+
+	for( ;; )
+	{
+
+		/* Wait until something arrives in the queue - this task will block
+
+		indefinitely provided INCLUDE_vTaskSuspend is set to 1 in
+
+		FreeRTOSConfig.h. */
+
+		xQueueReceive( xQueue, &ulReceivedValue, portMAX_DELAY );
+
+
+
+		/*  To get here something must have been received from the queue, but
+
+		is it the expected value?  If it is, toggle the green LED. */
+
+		if( ulReceivedValue == 100UL )
+		{
+			printf("Recieve expected value : %d\n", ulReceivedValue);
+		} 
+		else 
+		{
+			printf("Recieve unexpected value : %d\n", ulReceivedValue);
+		}
+
+	}
+
+}
+ 
+int main()
+{
+	SystemInit();
+
+	xQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( unsigned long ) );
+	if (xQueue != NULL)
+	{
+		xTaskCreate( prvQueueReceiveTask, "Rx", configMINIMAL_STACK_SIZE, NULL, mainQUEUE_RECEIVE_TASK_PRIORITY, NULL );
+
+		xTaskCreate( prvQueueSendTask, "TX", configMINIMAL_STACK_SIZE, NULL, mainQUEUE_SEND_TASK_PRIORITY, NULL );
+		
+		vTaskStartScheduler();
+	}
+	
+
+    return 0;
+}