diff --git a/include/sys.h b/include/sys.h
new file mode 100644
index 0000000..c2d9507
--- /dev/null
+++ b/include/sys.h
@@ -0,0 +1,34 @@
+#pragma once
+#include <stdint.h>
+#include <string.h>
+
+#include "app_timer.h"
+#include "app_uart.h"
+#include "app_util_platform.h"
+#include "ble_advdata.h"
+#include "ble_advertising.h"
+#include "ble_conn_params.h"
+#include "ble_hci.h"
+#include "ble_nus.h"
+#include "bsp_btn_ble.h"
+#include "nordic_common.h"
+#include "nrf.h"
+#include "nrf_ble_gatt.h"
+#include "nrf_ble_qwr.h"
+#include "nrf_log.h"
+#include "nrf_log_ctrl.h"
+#include "nrf_log_default_backends.h"
+#include "nrf_pwr_mgmt.h"
+#include "nrf_sdh.h"
+#include "nrf_sdh_ble.h"
+#include "nrf_sdh_soc.h"
+//
+#include "version.h"
+
+void zsys_init();
+void zsys_loop();
+
+#define ZLOGI(...) NRF_LOG_INFO(__VA_ARGS__)
+#define ZLOGE(...) NRF_LOG_ERROR(__VA_ARGS__)
+#define ZLOGW(...) NRF_LOG_WARNING(__VA_ARGS__)
+#define ZLOGD(...) NRF_LOG_DEBUG(__VA_ARGS__)
\ No newline at end of file
diff --git a/src/sys.c b/src/sys.c
new file mode 100644
index 0000000..545646e
--- /dev/null
+++ b/src/sys.c
@@ -0,0 +1,39 @@
+#include "sys.h"
+static void timers_init(void) {
+  ret_code_t err_code = app_timer_init();
+  APP_ERROR_CHECK(err_code);
+}
+
+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);
+}
+
+static void idle_state_handle(void) {
+  if (NRF_LOG_PROCESS() == false) {
+    nrf_pwr_mgmt_run();
+  }
+}
+
+void zsys_init() {
+  log_init();
+  timers_init();
+  power_management_init();
+
+}
+
+void zsys_loop() {
+  while (true) {
+    idle_state_handle();
+  }
+}