text: #ifndef H_BLELL_
  #define H_BLELL_
  
  #include "log/log.h"
  uint8_t g_dev_addr[BLE_DEV_ADDR_LEN];
  extern struct log ble_ll_log;
  #define BLELL_LOG_MODULE (LOG_MODULE_PERUSER + 9)
  #define BLELL_LOG(lvl, ...) LOG_ ## lvl(&ble_ll_log, BLELL_LOG_MODULE, __VA_ARGS__)
  extern int ble_ll_init(void);
  extern int ble_ll_hci_cmd_rx(uint8_t *cmd, void *arg);
  extern int ble_ll_hci_acl_rx(struct os_mbuf *om, void *arg);
  
  #endif
  