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| | ==Code== | | ==Code== |
| − | <syntaxhighlight> | + | <html> |
| − | /* Scheduler include files. */ | + | <script src="https://gist.github.com/Amritach/deeefdacacbe3f36f1a3.js"></script> |
| − | #include "FreeRtOSConfig.h"
| + | </html> |
| − | #include "FreeRTOS.h"
| + | |
| − | #include "task.h"
| + | |
| − | #include "croutine.h"
| + | |
| − | #include "uart.h" /* Explore Embedded UART library */
| + | |
| − | | + | |
| − | xTaskHandle TaskHandle_1;
| + | |
| − | xTaskHandle TaskHandle_2;
| + | |
| − | xTaskHandle TaskHandle_3;
| + | |
| − | xTaskHandle TaskHandle_4;
| + | |
| − | xTaskHandle TaskHandle_5;
| + | |
| − | | + | |
| − | /* Local Tasks declaration */
| + | |
| − | static void MyTask1(void* pvParameters);
| + | |
| − | static void MyTask2(void* pvParameters);
| + | |
| − | static void MyTask3(void* pvParameters);
| + | |
| − | static void MyTask4(void* pvParameters);
| + | |
| − | static void MyTask5(void* pvParameters);
| + | |
| − | static void MyIdleTask(void* pvParameters);
| + | |
| − | | + | |
| − | #define LED_IdleTask 0x01u
| + | |
| − | #define LED_Task1 0x02u
| + | |
| − | #define LED_Task2 0x04u
| + | |
| − | #define LED_Task3 0x08u
| + | |
| − | #define LED_Task4 0x10u
| + | |
| − | #define LED_Task5 0x20u
| + | |
| − | | + | |
| − | #define LED_PORT LPC_GPIO2->FIOPIN
| + | |
| − | | + | |
| − | int main(void)
| + | |
| − | {
| + | |
| − | SystemInit(); /* Initialize the microcontroller system */
| + | |
| − | LPC_GPIO2->FIODIR = 0xffffffffu;
| + | |
| − | UART_Init(38400); /* Initialize the Uart module */
| + | |
| − | | + | |
| − | /* Create the three tasks with priorities 1,2,3 */
| + | |
| − | xTaskCreate( MyTask1, ( signed char * )"Task1", configMINIMAL_STACK_SIZE, NULL, 1, &TaskHandle_1);
| + | |
| − | xTaskCreate( MyTask3, ( signed char * )"Task3", configMINIMAL_STACK_SIZE, NULL, 3, &TaskHandle_3 );
| + | |
| − | | + | |
| − | xTaskCreate( MyIdleTask, ( signed char * )"IdleTask", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
| + | |
| − | | + | |
| − | UART_Printf("\n\rIn main function, invoking scheduler");
| + | |
| − |
| + | |
| − | vTaskStartScheduler(); /* Start the schedular */
| + | |
| − | | + | |
| − | while(1);
| + | |
| − | }
| + | |
| − | | + | |
| − | | + | |
| − | static void MyTask1(void* pvParameters)
| + | |
| − | {
| + | |
| − | LED_PORT = LED_Task1; /* Led to indicate the execution of Task1*/
| + | |
| − | UART_Printf("\n\rIn Task1");
| + | |
| − | | + | |
| − | vTaskDelete(TaskHandle_1);
| + | |
| − | }
| + | |
| − | | + | |
| − | static void MyTask2(void* pvParameters)
| + | |
| − | {
| + | |
| − | LED_PORT = LED_Task2; /* Led to indicate the execution of Task2*/
| + | |
| − | UART_Printf("\n\rIn Task2 ");
| + | |
| − | | + | |
| − | vTaskDelete(TaskHandle_2);
| + | |
| − | }
| + | |
| − | | + | |
| − | static void MyTask3(void* pvParameters)
| + | |
| − | {
| + | |
| − | | + | |
| − | LED_PORT = LED_Task3; /* Led to indicate the execution of Task3*/
| + | |
| − | UART_Printf("\n\rTask3, creating new tasks 2");
| + | |
| − | | + | |
| − | /* Create two new tasks 2, 4 */
| + | |
| − | xTaskCreate( MyTask2, ( signed char * )"Task2", configMINIMAL_STACK_SIZE, NULL, 2, &TaskHandle_2);
| + | |
| − | UART_Printf("\n\rTask3, creating new tasks 4");
| + | |
| − | | + | |
| − | xTaskCreate( MyTask4, ( signed char * )"Task4", configMINIMAL_STACK_SIZE, NULL, 4, &TaskHandle_4);
| + | |
| − | | + | |
| − | LED_PORT = LED_Task3; /* Led to indicate the execution of Task3*/
| + | |
| − | UART_Printf("\n\rBack in Task3, Creating Task5");
| + | |
| − | | + | |
| − | xTaskCreate( MyTask5, ( signed char * )"Task5", configMINIMAL_STACK_SIZE, NULL, 5, &TaskHandle_5);
| + | |
| − | | + | |
| − | LED_PORT = LED_Task3; /* Led to indicate the execution of Task3*/
| + | |
| − | UART_Printf("\n\rBack in Task3, Exiting task3");
| + | |
| − | | + | |
| − | vTaskDelete(TaskHandle_3);
| + | |
| − | | + | |
| − | }
| + | |
| − | | + | |
| − | static void MyTask4(void* pvParameters)
| + | |
| − | {
| + | |
| − | LED_PORT = LED_Task4; /* Led to indicate the execution of Task4*/
| + | |
| − | UART_Printf("\n\rIn Task4");
| + | |
| − | | + | |
| − | vTaskDelete(TaskHandle_4);
| + | |
| − | }
| + | |
| − | | + | |
| − | static void MyTask5(void* pvParameters)
| + | |
| − | {
| + | |
| − | LED_PORT = LED_Task5; /* Led to indicate the execution of Task4*/
| + | |
| − | UART_Printf("\n\rIn Task5");
| + | |
| − | | + | |
| − | vTaskDelete(TaskHandle_5);
| + | |
| − | }
| + | |
| − | | + | |
| − | static void MyIdleTask(void* pvParameters)
| + | |
| − | {
| + | |
| − | while(1)
| + | |
| − | {
| + | |
| − | LED_PORT = LED_IdleTask; /* Led to indicate the execution of Idle Task*/
| + | |
| − | UART_Printf("\n\rIn idle state");
| + | |
| − | }
| + | |
| − | }
| + | |
| − | </syntaxhighlight> | + | |
| | | | |
| | {{DISQUS}} | | {{DISQUS}} |
In last tutorial we saw the effect of vTaskDelay() function.
