diff --git a/cw3_template/main.c b/cw3_template/main.c
index 8b3f59ba91073f07c593aa8b65e4e69c3221e4e7..56efe3b01370abb8e89f34a4ea59a43eca751889 100644
--- a/cw3_template/main.c
+++ b/cw3_template/main.c
@@ -1,152 +1,152 @@
-/**
- * Copyright (c) 2017 - 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
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- * 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.
- *
- */
-#include <stdint.h>
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdio.h>
-
-#include "nrf.h"
-#include "nrf_drv_usbd.h"
-#include "nrf_drv_clock.h"
-#include "nrf_gpio.h"
-#include "nrf_delay.h"
-#include "nrf_drv_power.h"
-
-#include "app_error.h"
-
-#include "boards.h"
-#include "bsp.h"
-#include "usb.h"
-#include "app_timer.h"
-
-// NOTE: lab3
-#include "nrf_drv_gpiote.h"
-
-// NOTE: uzupelnic odpowiednim pinem dla fototranzystora
-#define PIN_IN BSP_BUTTON_0
-
-extern char m_rx_buffer[READ_SIZE];
-extern char m_tx_buffer[NRF_DRV_USBD_EPSIZE];
-extern bool usb_ready;
-
-extern app_usbd_cdc_acm_t m_app_cdc_acm;
-
-
-static void init_bsp(void)
-{
- ret_code_t ret;
- ret = bsp_init(BSP_INIT_LEDS, 0);
- APP_ERROR_CHECK(ret);
-}
-
-static void usb_init(app_usbd_config_t usbd_config)
-{
- ret_code_t ret;
-
- app_usbd_serial_num_generate();
-
- ret = app_usbd_init(&usbd_config);
- APP_ERROR_CHECK(ret);
-
- app_usbd_class_inst_t const * class_cdc_acm = app_usbd_cdc_acm_class_inst_get(&m_app_cdc_acm);
- ret = app_usbd_class_append(class_cdc_acm);
- APP_ERROR_CHECK(ret);
-
- if (USBD_POWER_DETECTION)
- {
- ret = app_usbd_power_events_enable();
- APP_ERROR_CHECK(ret);
- }
- else
- {
- app_usbd_enable();
- app_usbd_start();
- }
-}
-
-
-int main(void)
-{
- ret_code_t ret;
- static const app_usbd_config_t usbd_config = {
- .ev_state_proc = usbd_user_ev_handler
- };
-
- ret = nrf_drv_clock_init();
- APP_ERROR_CHECK(ret);
-
- nrf_drv_clock_lfclk_request(NULL);
-
- while(!nrf_drv_clock_lfclk_is_running())
- {
- /* Just waiting */
- }
-
- ret = app_timer_init();
- APP_ERROR_CHECK(ret);
-
- usb_init(usbd_config);
- init_bsp();
-
- bsp_board_led_on(BSP_BOARD_LED_0);
-
- bool msg_sent = 0;
-
- while (true)
- {
-
- while (app_usbd_event_queue_process())
- {
- /* Nothing to do */
- }
-
- if (usb_ready && !msg_sent)
- {
- size_t size = sprintf(m_tx_buffer, "Systemy wbudowane i mikrokontrolery!\r\n");
- app_usbd_cdc_acm_write(&m_app_cdc_acm, m_tx_buffer, size);
- msg_sent = 1;
- }
-
- /* Sleep CPU only if there was no interrupt since last loop processing */
- __WFE();
- }
-}
-
-/** @} */
+/**
+ * Copyright (c) 2017 - 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
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * 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.
+ *
+ */
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdio.h>
+
+#include "nrf.h"
+#include "nrf_drv_usbd.h"
+#include "nrf_drv_clock.h"
+#include "nrf_gpio.h"
+#include "nrf_delay.h"
+#include "nrf_drv_power.h"
+
+#include "app_error.h"
+
+#include "boards.h"
+#include "bsp.h"
+#include "usb.h"
+#include "app_timer.h"
+
+// NOTE: lab3
+#include "nrf_drv_gpiote.h"
+
+// NOTE: uzupelnic odpowiednim pinem dla fototranzystora
+#define PIN_IN 20
+
+extern char m_rx_buffer[READ_SIZE];
+extern char m_tx_buffer[NRF_DRV_USBD_EPSIZE];
+extern bool usb_ready;
+
+extern app_usbd_cdc_acm_t m_app_cdc_acm;
+
+
+static void init_bsp(void)
+{
+ ret_code_t ret;
+ ret = bsp_init(BSP_INIT_LEDS, 0);
+ APP_ERROR_CHECK(ret);
+}
+
+static void usb_init(app_usbd_config_t usbd_config)
+{
+ ret_code_t ret;
+
+ app_usbd_serial_num_generate();
+
+ ret = app_usbd_init(&usbd_config);
+ APP_ERROR_CHECK(ret);
+
+ app_usbd_class_inst_t const * class_cdc_acm = app_usbd_cdc_acm_class_inst_get(&m_app_cdc_acm);
+ ret = app_usbd_class_append(class_cdc_acm);
+ APP_ERROR_CHECK(ret);
+
+ if (USBD_POWER_DETECTION)
+ {
+ ret = app_usbd_power_events_enable();
+ APP_ERROR_CHECK(ret);
+ }
+ else
+ {
+ app_usbd_enable();
+ app_usbd_start();
+ }
+}
+
+
+int main(void)
+{
+ ret_code_t ret;
+ static const app_usbd_config_t usbd_config = {
+ .ev_state_proc = usbd_user_ev_handler
+ };
+
+ ret = nrf_drv_clock_init();
+ APP_ERROR_CHECK(ret);
+
+ nrf_drv_clock_lfclk_request(NULL);
+
+ while(!nrf_drv_clock_lfclk_is_running())
+ {
+ /* Just waiting */
+ }
+
+ ret = app_timer_init();
+ APP_ERROR_CHECK(ret);
+
+ usb_init(usbd_config);
+ init_bsp();
+
+ bsp_board_led_on(BSP_BOARD_LED_0);
+
+ bool msg_sent = 0;
+
+ while (true)
+ {
+
+ while (app_usbd_event_queue_process())
+ {
+ /* Nothing to do */
+ }
+
+ if (usb_ready && !msg_sent)
+ {
+ size_t size = sprintf(m_tx_buffer, "Systemy wbudowane i mikrokontrolery!\r\n");
+ app_usbd_cdc_acm_write(&m_app_cdc_acm, m_tx_buffer, size);
+ msg_sent = 1;
+ }
+
+ /* Sleep CPU only if there was no interrupt since last loop processing */
+ __WFE();
+ }
+}
+
+/** @} */