전원 버튼 BSP 제거, GPIO 제어로 전환

- 전원 OFF 로직 추가(main_s)
- processing 변수 삭제

project/ble_peripheral/ble_app_bladder_patch/system/power/power_control.c

@@ -48,26 +48,20 @@ APP_TIMER_DEF(m_power_timer_id);
 /* Power sequence current step (0: I2C init, 1: reserved, 2: complete) */
 static uint8_t p_order;
 
-/* Data processing flag (declared in external module) */
-extern volatile bool processing;
-
 /* Power sequence lock flag (true = sequence in progress) */
 bool lock_check = false;
 
 /**
  * @brief Enter device sleep mode
  *
- * Clears the processing flag so the main loop stops
- * processing sensor data.
- *
  * @return 0 (always succeeds)
  */
-int device_sleep_mode(void){
+int device_sleep_mode(void)
+{
 	int rc = 0;
 	nrf_delay_ms(2);
 	DBG_PRINTF("Device_Sleep_Mode OK!\r\n");
 	nrf_delay_ms(10);
-	processing = false;           /* Clear processing flag -> stop sensor handling */
 	return rc;
 }