EmbeddedOS_Lab2_2

/*
===============================================================================
 Name        : main.c
 Author      : $(author)
 Version     :
 Copyright   : $(copyright)
 Description : main definition
===============================================================================
*/

#if defined (__USE_LPCOPEN)
#if defined(NO_BOARD_LIB)
#include "chip.h"
#else
#include "board.h"
#endif
#endif

#include <cr_section_macros.h>

// TODO: insert other include files here

// TODO: insert other definitions and declarations here

#include "FreeRTOS.h"
#include "task.h"
#include "semphr.h"
/*****************************************************************************
 * Private types/enumerations/variables
 ****************************************************************************/

/*****************************************************************************
 * Public types/enumerations/variables
 ****************************************************************************/

SemaphoreHandle_t xSemaphore =  NULL;
/*****************************************************************************
 * Private functions
 ****************************************************************************/

/* Sets up system hardware */
static void prvSetupHardware(void)
{
    SystemCoreClockUpdate();
    Board_Init();

    /* Initial LED0 state is off */
    Board_LED_Set(0, false);
}

static void Task1(void *pvParameters) {
    for (;;)
    {
        char x = (char) Board_UARTGetChar();
        if (48 <= x && x <= 122)
        {
            Board_UARTPutChar(x);
            xSemaphoreGive( xSemaphore );
        }
    }
}

static void Task2(void *pvParameters) {
    for(;;)
    {
        if (xSemaphoreTake( xSemaphore, portMAX_DELAY ) == pdTRUE)
        {
            Board_LED_Set(1, 1);
            vTaskDelay(configTICK_RATE_HZ / 10);
            Board_LED_Set(1, 0);
            vTaskDelay(configTICK_RATE_HZ / 10);
        }
    }
}

/*****************************************************************************
 * Public functions
 ****************************************************************************/

/* the following is required if runtime statistics are to be collected */
extern "C" {

void vConfigureTimerForRunTimeStats( void ) {
    Chip_SCT_Init(LPC_SCTSMALL1);
    LPC_SCTSMALL1->CONFIG = SCT_CONFIG_32BIT_COUNTER;
    LPC_SCTSMALL1->CTRL_U = SCT_CTRL_PRE_L(255) | SCT_CTRL_CLRCTR_L; // set prescaler to 256 (255 + 1), and start timer
}

}
/* end runtime statictics collection */

/**
 * @brief   main routine for FreeRTOS blinky example
 * @return  Nothing, function should not exit
 */
int main(void)
{
    prvSetupHardware();

    xSemaphore = xSemaphoreCreateBinary();
    xSemaphoreGive(xSemaphore);

    xTaskCreate(Task1, "Task1",
                configMINIMAL_STACK_SIZE, NULL, (tskIDLE_PRIORITY + 1UL),
                (TaskHandle_t *) NULL);

    xTaskCreate(Task2, "Task2",
                configMINIMAL_STACK_SIZE, NULL, (tskIDLE_PRIORITY + 1UL),
                (TaskHandle_t *) NULL);

    /* Start the scheduler */
    vTaskStartScheduler();

    /* Should never arrive here */
    return 1;
}