#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf.h"
#include "ble_hci.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_conn_params.h"
#include "nrf_sdh.h"
#include "nrf_sdh_soc.h"
#include "nrf_sdh_ble.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_qwr.h"
#include "app_timer.h"
#include "ble_nus.h"
#include "app_util_platform.h"
#include "bsp_btn_ble.h"
#include "nrf_pwr_mgmt.h"
#include "app_error.h"
#include "bsp.h"
#include "app_pwm.h"

#include "nrf_libuarte_async.h"

#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#include "nrf_delay.h"
#include "nrf_gpio.h"


#define Button 18

#define APP_BLE_CONN_CFG_TAG 1 /**< A tag identifying the SoftDevice BLE configuration. */

// #define DEVICE_NAME                     "xFinder"                               /**< Name of device. Will be included in the advertising data. */
#define NUS_SERVICE_UUID_TYPE BLE_UUID_TYPE_VENDOR_BEGIN /**< UUID type for the Nordic UART Service (vendor specific). */

#define APP_BLE_OBSERVER_PRIO 3 /**< Application's BLE observer priority. You shouldn't need to modify this value. */

#define APP_ADV_INTERVAL 64 /**< The advertising interval (in units of 0.625 ms. This value corresponds to 40 ms). */

//#define APP_ADV_DURATION                6000                                       /**< The advertising duration (180 seconds) in units of 10 milliseconds. */
#define APP_ADV_DURATION 0

#define MIN_CONN_INTERVAL MSEC_TO_UNITS(20, UNIT_1_25_MS)    /**< Minimum acceptable connection interval (20 ms), Connection interval uses 1.25 ms units. */
#define MAX_CONN_INTERVAL MSEC_TO_UNITS(75, UNIT_1_25_MS)    /**< Maximum acceptable connection interval (75 ms), Connection interval uses 1.25 ms units. */
#define SLAVE_LATENCY 0                                      /**< Slave latency. */
#define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS)     /**< Connection supervisory timeout (4 seconds), Supervision Timeout uses 10 ms units. */
#define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000) /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */
#define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000) /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */
#define MAX_CONN_PARAMS_UPDATE_COUNT 3                       /**< Number of attempts before giving up the connection parameter negotiation. */

#define DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */

NRF_LIBUARTE_ASYNC_DEFINE(libuarte, 0, 1, 2, NRF_LIBUARTE_PERIPHERAL_NOT_USED,255, 3);
NRF_LIBUARTE_ASYNC_DEFINE(libuarte2, 1, 2, NRF_LIBUARTE_PERIPHERAL_NOT_USED, NRF_LIBUARTE_PERIPHERAL_NOT_USED, 255, 3);

BLE_NUS_DEF(m_nus, NRF_SDH_BLE_TOTAL_LINK_COUNT); /**< BLE NUS service instance. */
NRF_BLE_GATT_DEF(m_gatt);                  /**< GATT module instance. */
NRF_BLE_QWR_DEF(m_qwr);             /**< Context for the Queued Write module.*/
BLE_ADVERTISING_DEF(m_advertising); /**< Advertising module instance. */


bool checkPreviousBufferFull = false;
bool checkCurrentBufferFull = false;
uint8_t tempBuffer[100];

uint8_t GPS_RMC[] ="$PMTK314,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*29<CR><LF>";
uint8_t GPS_timeInterval[] ="$PMTK220,2000*1C<CR><LF>";

uint8_t coordinate[30];
uint8_t dataGPS[180];
char longitude[30];
char latitude[30];
uint8_t valuePWM = 0;
bool checkRec2 = false;
char valueText[50];

APP_PWM_INSTANCE(PWM1, 3);

bool checkBuzzer = false;
static volatile bool ready_flag; // A flag indicating PWM status.

void pwm_ready_callback(uint32_t pwm_id) // PWM callback function
{
  ready_flag = true;
}

static uint16_t m_conn_handle =
    BLE_CONN_HANDLE_INVALID; /**< Handle of the current connection. */
static uint16_t m_ble_nus_max_data_len =
    BLE_GATT_ATT_MTU_DEFAULT - 3; /**< Maximum length of data (in bytes) that
                                     can be transmitted to the peer by the
                                     Nordic UART service module. */
static ble_uuid_t m_adv_uuids[] =
    /**< Universally unique service identifier. */ {
        {BLE_UUID_NUS_SERVICE, NUS_SERVICE_UUID_TYPE}};

/**@brief Function for assert macro callback.
 *
 * @details This function will be called in case of an assert in the SoftDevice.
 *
 * @warning This handler is an example only and does not fit a final product.
 * You need to analyse
 *          how your product is supposed to react in case of Assert.
 * @warning On assert from the SoftDevice, the system can only recover on reset.
 *
 * @param[in] line_num    Line number of the failing ASSERT call.
 * @param[in] p_file_name File name of the failing ASSERT call.
 */
void assert_nrf_callback(uint16_t line_num, const uint8_t *p_file_name) {
  NRF_LOG_INFO("call assert_nrf_callback");
  app_error_handler(DEAD_BEEF, line_num, p_file_name);
}

/**@brief Function for initializing the timer module.
 */
static void timers_init(void) {
  ret_code_t err_code = app_timer_init();
  APP_ERROR_CHECK(err_code);
}

/**@brief Function for the GAP initialization.
 *
 * @details This function will set up all the necessary GAP (Generic Access
 * Profile) parameters of
 *          the device. It also sets the permissions and appearance.
 */
static void gap_params_init(void) {
  uint32_t err_code;
  ble_gap_conn_params_t gap_conn_params;
  ble_gap_conn_sec_mode_t sec_mode;
  char DEVICE_NAME[25];

  ble_gap_addr_t addr;
  sd_ble_gap_addr_get(&addr);
  NRF_LOG_RAW_INFO("\n%02X:%02X:%02X:%02X:%02X:%02X\n", addr.addr[0],
                   addr.addr[1], addr.addr[2], addr.addr[3], addr.addr[4],
                   addr.addr[5]);
  sprintf(DEVICE_NAME, "xFinder:%02X:%02X:%02X:%02X:%02X:%02X", addr.addr[5],
          addr.addr[4], addr.addr[3], addr.addr[2], addr.addr[1], addr.addr[0]);

  BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);

  err_code = sd_ble_gap_device_name_set(&sec_mode, (const uint8_t *)DEVICE_NAME,
                                        strlen(DEVICE_NAME));
  APP_ERROR_CHECK(err_code);

  memset(&gap_conn_params, 0, sizeof(gap_conn_params));

  gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL;
  gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL;
  gap_conn_params.slave_latency = SLAVE_LATENCY;
  gap_conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT;

  err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
  APP_ERROR_CHECK(err_code);
}

/**@brief Function for handling Queued Write Module errors.
 *
 * @details A pointer to this function will be passed to each service which may
 * need to inform the
 *          application about an error.
 *
 * @param[in]   nrf_error   Error code containing information about what went
 * wrong.
 */
static void nrf_qwr_error_handler(uint32_t nrf_error) {
  APP_ERROR_HANDLER(nrf_error);
}

/**@brief Function for handling the data from the Nordic UART Service.
 *
 * @details This function will process the data received from the Nordic UART
 * BLE Service and send
 *          it to the UART module.
 *
 * @param[in] p_evt       Nordic UART Service event.
 */
/**@snippet [Handling the data received over BLE] */
static void nus_data_handler(ble_nus_evt_t *p_evt) {
  ret_code_t ret;

  uint16_t index = 0;

  if (p_evt->type == BLE_NUS_EVT_RX_DATA) {
    uint32_t err_code;
    NRF_LOG_INFO("receieved data from mobile phone");
    NRF_LOG_DEBUG("Received data from BLE NUS. Writing data on UART.");
    NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data,
                          p_evt->params.rx_data.length);
    NRF_LOG_INFO("%s", p_evt->params.rx_data.p_data);

    uint8_t uart_string[BLE_NUS_MAX_DATA_LEN + 2] = "";
    memcpy(uart_string, p_evt->params.rx_data.p_data,
           p_evt->params.rx_data.length);
    uart_string[p_evt->params.rx_data.length] = '\r';
    uart_string[p_evt->params.rx_data.length + 1] = '\n';

    if (strcmp(uart_string, "1\r\n") == 0) {
      checkBuzzer = true;
    }
    if (strcmp(uart_string, "2\r\n") == 0) {
      checkBuzzer = false;
    }
    do {
      err_code = nrf_libuarte_async_tx(&libuarte, uart_string,
                                       p_evt->params.rx_data.length + 2);
      if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_BUSY)) {
        NRF_LOG_ERROR("Failed receiving NUS message. Error 0x%x. ", err_code);
        APP_ERROR_CHECK(err_code);
      }
    } while (err_code == NRF_ERROR_BUSY);
  }
}
/**@snippet [Handling the data received over BLE] */

/**@brief Function for initializing services that will be used by the
 * application.
 */
static void services_init(void) {
  NRF_LOG_INFO("call services_init");
  uint32_t err_code;
  ble_nus_init_t nus_init;
  nrf_ble_qwr_init_t qwr_init = {0};

  // Initialize Queued Write Module.
  qwr_init.error_handler = nrf_qwr_error_handler;

  err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init);
  APP_ERROR_CHECK(err_code);

  // Initialize NUS.
  memset(&nus_init, 0, sizeof(nus_init));

  nus_init.data_handler = nus_data_handler;

  err_code = ble_nus_init(&m_nus, &nus_init);
  APP_ERROR_CHECK(err_code);
}

/**@brief Function for handling an event from the Connection Parameters Module.
 *
 * @details This function will be called for all events in the Connection
 * Parameters Module
 *          which are passed to the application.
 *
 * @note All this function does is to disconnect. This could have been done by
 * simply setting
 *       the disconnect_on_fail config parameter, but instead we use the event
 * handler
 *       mechanism to demonstrate its use.
 *
 * @param[in] p_evt  Event received from the Connection Parameters Module.
 */
static void on_conn_params_evt(ble_conn_params_evt_t *p_evt) {
  NRF_LOG_INFO("call on_conn_params_evt");
  uint32_t err_code;

  if (p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED) {
    err_code = sd_ble_gap_disconnect(m_conn_handle,
                                     BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
    APP_ERROR_CHECK(err_code);
  }
}

/**@brief Function for handling errors from the Connection Parameters module.
 *
 * @param[in] nrf_error  Error code containing information about what went
 * wrong.
 */
static void conn_params_error_handler(uint32_t nrf_error) {
  APP_ERROR_HANDLER(nrf_error);
}

/**@brief Function for initializing the Connection Parameters module.
 */
static void conn_params_init(void) {
  uint32_t err_code;
  ble_conn_params_init_t cp_init;

  memset(&cp_init, 0, sizeof(cp_init));

  cp_init.p_conn_params = NULL;
  cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY;
  cp_init.next_conn_params_update_delay = NEXT_CONN_PARAMS_UPDATE_DELAY;
  cp_init.max_conn_params_update_count = MAX_CONN_PARAMS_UPDATE_COUNT;
  cp_init.start_on_notify_cccd_handle = BLE_GATT_HANDLE_INVALID;
  cp_init.disconnect_on_fail = false;
  cp_init.evt_handler = on_conn_params_evt;
  cp_init.error_handler = conn_params_error_handler;

  err_code = ble_conn_params_init(&cp_init);
  APP_ERROR_CHECK(err_code);
}

/**@brief Function for putting the chip into sleep mode.
 *
 * @note This function will not return.
 */
static void sleep_mode_enter(void) {
  NRF_LOG_INFO("call slepp_mode_enter");
  uint32_t err_code = bsp_indication_set(BSP_INDICATE_IDLE);
  APP_ERROR_CHECK(err_code);

  // Prepare wakeup buttons.
  err_code = bsp_btn_ble_sleep_mode_prepare();
  APP_ERROR_CHECK(err_code);

  // Go to system-off mode (this function will not return; wakeup will cause a
  // reset).
  err_code = sd_power_system_off();
  APP_ERROR_CHECK(err_code);
}

/**@brief Function for handling advertising events.
 *
 * @details This function will be called for advertising events which are passed
 * to the application.
 *
 * @param[in] ble_adv_evt  Advertising event.
 */
static void on_adv_evt(ble_adv_evt_t ble_adv_evt) {
  uint32_t err_code;
  NRF_LOG_INFO("call on_adv_evt");
  switch (ble_adv_evt) {
  case BLE_ADV_EVT_FAST:
    NRF_LOG_INFO("call BLE_ADV_EVT_FAST");
    err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
    APP_ERROR_CHECK(err_code);
    break;
  case BLE_ADV_EVT_IDLE:
    NRF_LOG_INFO("call BLE_ADV_EVT_IDLE");
    // sleep_mode_enter();
    break;
  default:
    break;
  }
}

/**@brief Function for handling BLE events.
 *
 * @param[in]   p_ble_evt   Bluetooth stack event.
 * @param[in]   p_context   Unused.
 */
static void ble_evt_handler(ble_evt_t const *p_ble_evt, void *p_context) {
  uint32_t err_code;

  switch (p_ble_evt->header.evt_id) {
  case BLE_GAP_EVT_CONNECTED:
    NRF_LOG_INFO("Connected");
    err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
    APP_ERROR_CHECK(err_code);
    m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
    err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
    APP_ERROR_CHECK(err_code);
    break;

  case BLE_GAP_EVT_DISCONNECTED:
    NRF_LOG_INFO("Disconnected");
    // LED indication will be changed when advertising starts.
    m_conn_handle = BLE_CONN_HANDLE_INVALID;
    break;

  case BLE_GAP_EVT_PHY_UPDATE_REQUEST: {
    NRF_LOG_DEBUG("PHY update request.");
    ble_gap_phys_t const phys = {
        .rx_phys = BLE_GAP_PHY_AUTO, .tx_phys = BLE_GAP_PHY_AUTO,
    };
    err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
    APP_ERROR_CHECK(err_code);
  } break;

  case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
    // Pairing not supported
    err_code = sd_ble_gap_sec_params_reply(
        m_conn_handle, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL);
    APP_ERROR_CHECK(err_code);
    break;

  case BLE_GATTS_EVT_SYS_ATTR_MISSING:
    // No system attributes have been stored.
    err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0, 0);
    APP_ERROR_CHECK(err_code);
    break;

  case BLE_GATTC_EVT_TIMEOUT:
    // Disconnect on GATT Client timeout event.
    err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle,
                                     BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
    APP_ERROR_CHECK(err_code);
    break;

  case BLE_GATTS_EVT_TIMEOUT:
    // Disconnect on GATT Server timeout event.
    err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle,
                                     BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
    APP_ERROR_CHECK(err_code);
    break;
  case BSP_EVENT_KEY_0:
    NRF_LOG_INFO("DA BAM NUT");
    break;

  default:
    // No implementation needed.
    break;
  }
}

/**@brief Function for the SoftDevice initialization.
 *
 * @details This function initializes the SoftDevice and the BLE event
 * interrupt.
 */
static void ble_stack_init(void) {
  NRF_LOG_INFO("call ble_stack_init");
  ret_code_t err_code;

  err_code = nrf_sdh_enable_request();
  APP_ERROR_CHECK(err_code);

  // Configure the BLE stack using the default settings.
  // Fetch the start address of the application RAM.
  uint32_t ram_start = 0;
  err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start);
  APP_ERROR_CHECK(err_code);

  // Enable BLE stack.
  err_code = nrf_sdh_ble_enable(&ram_start);
  APP_ERROR_CHECK(err_code);

  // Register a handler for BLE events.
  NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler,
                       NULL);
}

/**@brief Function for handling events from the GATT library. */
void gatt_evt_handler(nrf_ble_gatt_t *p_gatt, nrf_ble_gatt_evt_t const *p_evt) {
  if ((m_conn_handle == p_evt->conn_handle) &&
      (p_evt->evt_id == NRF_BLE_GATT_EVT_ATT_MTU_UPDATED)) {
    m_ble_nus_max_data_len =
        p_evt->params.att_mtu_effective - OPCODE_LENGTH - HANDLE_LENGTH;
    NRF_LOG_INFO("Data len is set to 0x%X(%d)", m_ble_nus_max_data_len,
                 m_ble_nus_max_data_len);
  }
  NRF_LOG_DEBUG("ATT MTU exchange completed. central 0x%x peripheral 0x%x",
                p_gatt->att_mtu_desired_central,
                p_gatt->att_mtu_desired_periph);
}

/**@brief Function for initializing the GATT library. */
void gatt_init(void) {
  ret_code_t err_code;

  err_code = nrf_ble_gatt_init(&m_gatt, gatt_evt_handler);
  APP_ERROR_CHECK(err_code);

  err_code =
      nrf_ble_gatt_att_mtu_periph_set(&m_gatt, NRF_SDH_BLE_GATT_MAX_MTU_SIZE);
  APP_ERROR_CHECK(err_code);
}

/**@brief Function for handling events from the BSP module.
 *
 * @param[in]   event   Event generated by button press.
 */
void bsp_event_handler(bsp_event_t event) {
  uint32_t err_code;
  switch (event) {
  case BSP_EVENT_KEY_0:
    NRF_LOG_INFO("BSP_EVENT_KEY_0");
    // sleep_mode_enter();
    break;
  default:
    break;
  }
}

char *datavalue(char Data[], char characters, int num) {
  memset(valueText,0,sizeof(valueText));
  int found = 0;
  int strIndex[] = {0, -1};
  int maxIndex = strlen(Data) - 1;
  for (int i = 0; i <= maxIndex && found <= num; i++) {
    if (Data[i] == characters || i == maxIndex) {
      found++;
      strIndex[0] = strIndex[1] + 1;
      strIndex[1] = (i == maxIndex) ? i + 1 : i;
    }
  }
  if (found > num) {
    strncpy(valueText, Data + strIndex[0], strIndex[1] - strIndex[0]);
  } else
    strcpy(valueText, "");
  return valueText;
}

typedef struct {
  uint8_t *p_data;
  uint32_t length;
} buffer_t;

NRF_QUEUE_DEF(buffer_t, m_buf_queue, 10, NRF_QUEUE_MODE_NO_OVERFLOW);

void send_Uart1(char *sdata, int len) {
  ret_code_t ret;
  do {
    ret = nrf_libuarte_async_tx(&libuarte, sdata, len);
  } while (ret == NRF_ERROR_BUSY);
  APP_ERROR_CHECK(ret);
}

void send_Uart2(char *sdata, int len) {
  ret_code_t ret;
  do {
    ret = nrf_libuarte_async_tx(&libuarte2, sdata, len);
  } while (ret == NRF_ERROR_BUSY);
  APP_ERROR_CHECK(ret);
}

void handleBuffer() {
  if (checkPreviousBufferFull == true) {
    NRF_LOG_INFO("call handleBuffer");
    strcat(dataGPS, tempBuffer);
  } else {
    memset(dataGPS, 0, sizeof(dataGPS));
    memcpy(dataGPS, tempBuffer, sizeof(tempBuffer));
  }

  if (checkCurrentBufferFull == false) {
    //NRF_LOG_INFO("data = %s", dataGPS);
    stpcpy(longitude, datavalue(dataGPS, ',', 1));
    strcpy(latitude, datavalue(dataGPS, ',', 9));
    NRF_LOG_INFO("%s",longitude);
    NRF_LOG_INFO("%s",latitude);
    sprintf(coordinate, "%s;%s\r\n", longitude, latitude);
    send_Uart1(coordinate, sizeof(coordinate)); 
  }
  checkPreviousBufferFull = checkCurrentBufferFull;
  memset(tempBuffer, 0, sizeof(tempBuffer));
}

/**@brief   Function for handling app_uart events.
 *
 * @details This function will receive a single character from the app_uart
 * module and append it to
 *          a string. The string will be be sent over BLE when the last
 * character received was a
 *          'new line' '\n' (hex 0x0A) or if the string has reached the maximum
 * data length.
 */
/**@snippet [Handling the data received over UART] */

void uart_event_handler(void *context, nrf_libuarte_async_evt_t *p_evt) {
  nrf_libuarte_async_t *p_libuarte = (nrf_libuarte_async_t *)context;
  ret_code_t ret;
  uint16_t index = 0;
  switch (p_evt->type) {
  case NRF_LIBUARTE_ASYNC_EVT_OVERRUN_ERROR:
    break;
  case NRF_LIBUARTE_ASYNC_EVT_ERROR:
    break;
  case NRF_LIBUARTE_ASYNC_EVT_RX_DATA:
    //checkRec2 = true;
    //memcpy(tempBuffer, p_evt->data.rxtx.p_data, p_evt->data.rxtx.length);
    //if (p_evt->data.rxtx.src == 0) {
    //  NRF_LOG_INFO("XX FULL BUFFER XX");
    //  checkCurrentBufferFull = true;
    //} else {
    //  checkCurrentBufferFull = false;
    //}
    NRF_LOG_INFO("receive1");
    nrf_libuarte_async_rx_free(p_libuarte, p_evt->data.rxtx.p_data,
                               p_evt->data.rxtx.length);

    break;
  case NRF_LIBUARTE_ASYNC_EVT_TX_DONE:
    memset(coordinate,0, sizeof(coordinate));
    memset(longitude,0,sizeof(longitude));
    memset(latitude,0,sizeof(latitude));
    break;
  default:
    break;
  }
}

uint8_t data1[100];
uint8_t data2[100];
char *ptrRx2;

void uart_event_handler2(void *context, nrf_libuarte_async_evt_t *p_evt) {
  nrf_libuarte_async_t *p_libuarte = (nrf_libuarte_async_t *)context;
  ret_code_t ret;
  uint16_t index = 0;

  switch (p_evt->type) {
  case NRF_LIBUARTE_ASYNC_EVT_ERROR:
    break;
  case NRF_LIBUARTE_ASYNC_EVT_RX_DATA:
    checkRec2 = true;
    memcpy(tempBuffer, p_evt->data.rxtx.p_data, p_evt->data.rxtx.length);
    if (p_evt->data.rxtx.src == 0) {
      checkCurrentBufferFull = true;
    } else {
      checkCurrentBufferFull = false;
    }
    nrf_libuarte_async_rx_free(p_libuarte, p_evt->data.rxtx.p_data, p_evt->data.rxtx.length);
    break;
  case NRF_LIBUARTE_ASYNC_EVT_TX_DONE:
    break;
  default:
    break;
  }
}
/**@snippet [Handling the data received over UART] */

/**@brief  Function for initializing the UART module.
 */
/**@snippet [UART Initialization] */
static void uart1_init(void) {
  uint32_t err_code;
  nrf_libuarte_async_config_t nrf_libuarte_async_config = {
      .tx_pin = TX_PIN_NUMBER1,
      .rx_pin = RX_PIN_NUMBER1,
      .baudrate = NRF_UARTE_BAUDRATE_115200,
      .parity = NRF_UARTE_PARITY_EXCLUDED,
      .hwfc = NRF_UARTE_HWFC_DISABLED,
      .timeout_us = 100,
      .int_prio = APP_IRQ_PRIORITY_LOW_MID};
  
  err_code = nrf_libuarte_async_init(&libuarte, &nrf_libuarte_async_config,
                                     uart_event_handler, (void *)&libuarte);
  APP_ERROR_CHECK(err_code);
  nrf_libuarte_async_enable(&libuarte);
  //static uint8_t text[] = "ble_app_libUARTE example started.\r\n";
  //static uint8_t text_size = sizeof(text);
  //err_code = nrf_libuarte_async_tx(&libuarte, text, text_size);
  APP_ERROR_CHECK(err_code);
}

static void uart2_init(void) {
  uint32_t err_code;
  nrf_libuarte_async_config_t nrf_libuarte_async_config2 = {
      .tx_pin = TX_PIN_NUMBER2,
      .rx_pin = RX_PIN_NUMBER2,
      .baudrate = NRF_UARTE_BAUDRATE_115200,
      .parity = NRF_UARTE_PARITY_EXCLUDED,
      .hwfc = NRF_UARTE_HWFC_DISABLED,
      .timeout_us = 100,
      .int_prio = APP_IRQ_PRIORITY_LOW_MID};
  ret_code_t err_code2 =
      nrf_libuarte_async_init(&libuarte2, &nrf_libuarte_async_config2,
                              uart_event_handler2, (void *)&libuarte2);
  APP_ERROR_CHECK(err_code2);
  nrf_libuarte_async_enable(&libuarte2);
  //static uint8_t text[] = "ble_app_libUARTE example started.\r\n";
  //static uint8_t text_size = sizeof(text);
  //err_code2 = nrf_libuarte_async_tx(&libuarte2, text, text_size);
  APP_ERROR_CHECK(err_code2);
}

/**@snippet [UART Initialization] */

/**@brief Function for initializing the Advertising functionality.
 */
static void advertising_init(void) {
  uint32_t err_code;
  ble_advertising_init_t init;

  memset(&init, 0, sizeof(init));

  init.advdata.name_type = BLE_ADVDATA_FULL_NAME;
  init.advdata.include_appearance = false;
  // init.advdata.flags              =
  // BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE;
  init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
  init.srdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
  init.srdata.uuids_complete.p_uuids = m_adv_uuids;

  init.config.ble_adv_fast_enabled = true;
  init.config.ble_adv_fast_interval = APP_ADV_INTERVAL;
  init.config.ble_adv_fast_timeout = APP_ADV_DURATION;
  init.evt_handler = on_adv_evt;

  err_code = ble_advertising_init(&m_advertising, &init);
  APP_ERROR_CHECK(err_code);

  ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
}

/**@brief Function for initializing buttons and leds.
 *
 * @param[out] p_erase_bonds  Will be true if the clear bonding button was
 * pressed to wake the application up.
 */
static void buttons_leds_init(bool *p_erase_bonds) {
  bsp_event_t startup_event;

  uint32_t err_code =
      bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS, bsp_event_handler);
  APP_ERROR_CHECK(err_code);

  err_code = bsp_btn_ble_init(NULL, &startup_event);
  APP_ERROR_CHECK(err_code);

  *p_erase_bonds = (startup_event == BSP_EVENT_CLEAR_BONDING_DATA);
}

/**@brief Function for initializing the nrf log module.
 */
static void log_init(void) {
  ret_code_t err_code = NRF_LOG_INIT(NULL);
  APP_ERROR_CHECK(err_code);
  NRF_LOG_DEFAULT_BACKENDS_INIT();
}

/**@brief Function for initializing power management.
 */
static void power_management_init(void) {
  ret_code_t err_code;
  err_code = nrf_pwr_mgmt_init();
  APP_ERROR_CHECK(err_code);
}

/**@brief Function for handling the idle state (main loop).
 *
 * @details If there is no pending log operation, then sleep until next the next
 * event occurs.
 */
static void idle_state_handle(void) {
  if (NRF_LOG_PROCESS() == false) {
    nrf_pwr_mgmt_run();
  }
}

/**@brief Function for starting advertising.
 */
static void advertising_start(void) {
  NRF_LOG_INFO("call advertising start");
  uint32_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
  APP_ERROR_CHECK(err_code);
}

/**@brief Application main function.
 */

   static void uart_init(void) {
    uint32_t err_code;

    nrf_libuarte_async_config_t nrf_libuarte_async_config = {
      .tx_pin = TX_PIN_NUMBER1,
      .rx_pin = RX_PIN_NUMBER1,
      .baudrate = NRF_UARTE_BAUDRATE_115200,
      .parity = NRF_UARTE_PARITY_EXCLUDED,
      .hwfc = NRF_UARTE_HWFC_DISABLED,
      .timeout_us = 100,
      .int_prio = APP_IRQ_PRIORITY_LOW_MID
    };
    nrf_libuarte_async_config_t nrf_libuarte_async_config2 = {
      .tx_pin = TX_PIN_NUMBER2,
      .rx_pin = RX_PIN_NUMBER2,
      .baudrate = NRF_UARTE_BAUDRATE_115200,
      .parity = NRF_UARTE_PARITY_EXCLUDED,
      .hwfc = NRF_UARTE_HWFC_DISABLED,
      .timeout_us = 100,
      .int_prio = APP_IRQ_PRIORITY_LOW_MID
    };

    err_code = nrf_libuarte_async_init( & libuarte, & nrf_libuarte_async_config, uart_event_handler, (void * ) & libuarte);
    ret_code_t err_code2 = nrf_libuarte_async_init( & libuarte2, & nrf_libuarte_async_config2, uart_event_handler2, (void * ) & libuarte2); //edited2

    APP_ERROR_CHECK(err_code);
    APP_ERROR_CHECK(err_code2); //edited2

    nrf_libuarte_async_enable( & libuarte);
    nrf_libuarte_async_enable( & libuarte2); //edited2

    static uint8_t text[] = "ble_app_libUARTE example started.\r\n";
    static uint8_t text_size = sizeof(text);

    err_code = nrf_libuarte_async_tx( & libuarte, text, text_size);
    err_code2 = nrf_libuarte_async_tx( & libuarte2, text, text_size); //edited2
    APP_ERROR_CHECK(err_code);
    APP_ERROR_CHECK(err_code2); //edited2
  }

bool checkConfig = true;

int main(void)

{
  bool erase_bonds;
  log_init();
  // Initialize.
  timers_init();
  //uart2_init();
  uart_init();
  checkConfig = true;
  NRF_LOG_INFO("1===");
  send_Uart2(GPS_RMC, sizeof(GPS_RMC));
  NRF_LOG_INFO("2===");
  send_Uart2(GPS_RMC, sizeof(GPS_RMC));
  NRF_LOG_INFO("3===");
  send_Uart2(GPS_timeInterval, sizeof(GPS_timeInterval));
  NRF_LOG_INFO("4===");
  send_Uart2(GPS_timeInterval, sizeof(GPS_timeInterval));
  NRF_LOG_INFO("5===");
  checkConfig = false;
  //uart1_init();

  buttons_leds_init(&erase_bonds);
  power_management_init();
  ble_stack_init();
  gap_params_init();
  gatt_init();
  services_init();
  advertising_init();
  conn_params_init();
  // Start execution.
  NRF_LOG_INFO("Debug logging for UART over RTT started.");
  advertising_start();

  ret_code_t err_code;
  app_pwm_config_t pwm1_cfg = APP_PWM_DEFAULT_CONFIG_1CH(500, LED_2);
  pwm1_cfg.pin_polarity[1] = APP_PWM_POLARITY_ACTIVE_HIGH;
  err_code = app_pwm_init(&PWM1, &pwm1_cfg, pwm_ready_callback);
  APP_ERROR_CHECK(err_code);

  app_pwm_enable(&PWM1);

  // Enter main loop.
  for (;;) {
    idle_state_handle();

    if (checkRec2 && checkConfig == false) {
      handleBuffer();
      checkRec2 = false;
    }

    while (checkBuzzer == true) {
    //app_pwm_channel_duty_set(&PWM1, 0, 50);
    //nrf_delay_ms(25);
    //app_pwm_channel_duty_set(&PWM1, 0, 100);
    //nrf_delay_ms(25);


      for (uint8_t i = 0; i < 40; ++i) {
        valuePWM = (i < 20) ? (i * 5) : (100 - (i - 20) * 5);
        ready_flag = false;
        while (app_pwm_channel_duty_set(&PWM1, 0, valuePWM) == NRF_ERROR_BUSY);
        while (!ready_flag);
        APP_ERROR_CHECK(app_pwm_channel_duty_set(&PWM1, 0, valuePWM));
        nrf_delay_ms(25);
      }
    }
    if (checkBuzzer == false) {
      while (app_pwm_channel_duty_set(&PWM1, 0, 100) == NRF_ERROR_BUSY);
    }
  }
}

/**
 * @}
 */