/**
 * Copyright (c) 2015 - 2019, Nordic Semiconductor ASA
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
 *    conditions and the following disclaimer in the documentation and/or other
 *    materials provided with the distribution.
 *
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
 *
 * 5. Any software provided in binary form under this license must not be reverse
 *    engineered, decompiled, modified and/or disassembled.
 *
 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
/** @file
 * @defgroup blinky_example_main main.c
 * @{
 * @ingroup blinky_example_freertos
 *
 * @brief Blinky FreeRTOS Example Application main file.
 *
 * This file contains the source code for a sample application using FreeRTOS to blink LEDs.
 *
 */

#include <stdbool.h>
#include <stdint.h>

#include "FreeRTOS.h"
#include "task.h"
#include "timers.h"
#include "bsp.h"
#include "nordic_common.h"
#include "nrf_drv_clock.h"
#include "app_usbd_types.h"
#include "sdk_errors.h"
#include "app_error.h"
#include "nrf_serial.h"

#if LEDS_NUMBER <= 2
#error "Board is not equipped with enough amount of LEDs"
#endif

#define TASK_DELAY        200           /**< Task delay. Delays a LED0 task for 200 ms */
#define TIMER_PERIOD      1000          /**< Timer period. LED1 timer will expire after 1000 ms */

TaskHandle_t  led_toggle_task_handle;   /**< Reference to LED0 toggling FreeRTOS task. */
TimerHandle_t led_toggle_timer_handle;  /**< Reference to LED1 toggling FreeRTOS timer. */


static void sleep_handler(void)
{
    __WFE();
    __SEV();
    __WFE();
}
void My_cdc_acm_user_ev_handler(app_usbd_class_inst_t const * p_inst,
                           nrfx_uarte_event_t   event);

NRF_SERIAL_DRV_UART_CONFIG_DEF(m_uarte0_drv_config,
                      
                          RX_PIN_NUMBER, TX_PIN_NUMBER,
                      RTS_PIN_NUMBER, CTS_PIN_NUMBER,
                      NRF_UART_HWFC_DISABLED, NRF_UART_PARITY_EXCLUDED,
                      NRF_UART_BAUDRATE_38400,
                      UART_DEFAULT_CONFIG_IRQ_PRIORITY);


#define SERIAL_FIFO_TX_SIZE 32
#define SERIAL_FIFO_RX_SIZE 32

NRF_SERIAL_QUEUES_DEF(serial0_queues, SERIAL_FIFO_TX_SIZE, SERIAL_FIFO_RX_SIZE);

#define SERIAL_BUFF_TX_SIZE 1
#define SERIAL_BUFF_RX_SIZE 1

NRF_SERIAL_BUFFERS_DEF(serial0_buffs, SERIAL_BUFF_TX_SIZE, SERIAL_BUFF_RX_SIZE);

NRF_SERIAL_CONFIG_DEF(serial0_config, NRF_SERIAL_MODE_DMA,
                      &serial0_queues, &serial0_buffs, My_cdc_acm_user_ev_handler, sleep_handler);
NRF_SERIAL_UART_DEF(serial0_uarte, 0);


void My_cdc_acm_user_ev_handler(app_usbd_class_inst_t const * p_inst,
                           nrfx_uarte_event_t   event)
                           {
                         
                           switch (event.type)
                           {
                           case NRF_SERIAL_EVENT_DRV_ERR:
                         
                    
                           break;
                    
                                                     }


                           }


/**@brief LED0 task entry function.
 *
 * @param[in] pvParameter   Pointer that will be used as the parameter for the task.
 */
static void led_toggle_task_function (void * pvParameter)
{
 ret_code_t ret;
    UNUSED_PARAMETER(pvParameter);

   ret = nrf_serial_init(&serial0_uarte, &m_uarte0_drv_config, &serial0_config);
    APP_ERROR_CHECK(ret);


char c = 'a';
    while (true)
    {
 
        ret = nrf_serial_read(&serial0_uarte, &c, sizeof(c), NULL, 1000);
        if (ret != NRF_SUCCESS)
        {
            continue;
        }
       (void)nrf_serial_write(&serial0_uarte, &c, sizeof(c), NULL, 0);
        (void)nrf_serial_flush(&serial0_uarte, 0);

      


        /* Tasks must be implemented to never return... */
    }
}

/**@brief The function to call when the LED1 FreeRTOS timer expires.
 *
 * @param[in] pvParameter   Pointer that will be used as the parameter for the timer.
 */
static void led_toggle_timer_callback (void * pvParameter)
{
    UNUSED_PARAMETER(pvParameter);
  //  bsp_board_led_invert(BSP_BOARD_LED_1);
}

int main(void)
{
    ret_code_t err_code;



    /* Initialize clock driver for better time accuracy in FREERTOS */
    err_code = nrf_drv_clock_init();
    APP_ERROR_CHECK(err_code);


   // Initializ
    //nrf_drv_clock_lfclk_request(NULL);
    
    

    /* Configure LED-pins as outputs */
    bsp_board_init(BSP_INIT_LEDS);

    /* Create task for LED0 blinking with priority set to 2 */
   UNUSED_VARIABLE(xTaskCreate(led_toggle_task_function, "LED0", configMINIMAL_STACK_SIZE + 256, NULL, 2, &led_toggle_task_handle));

    /* Start timer for LED1 blinking */
    led_toggle_timer_handle = xTimerCreate( "LED1", TIMER_PERIOD, pdTRUE, NULL, led_toggle_timer_callback);
    UNUSED_VARIABLE(xTimerStart(led_toggle_timer_handle, 0));

    /* Activate deep sleep mode */
    SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;

    /* Start FreeRTOS scheduler. */
    vTaskStartScheduler();

    while (true)
    {
        /* FreeRTOS should not be here... FreeRTOS goes back to the start of stack
         * in vTaskStartScheduler function. */
    }
}

/**
 *@}
 **/
