REG_DBI_FLAG_V1
rtw_write16(rtwdev, REG_DBI_FLAG_V1, write_addr);
rtw_write8(rtwdev, REG_DBI_FLAG_V1 + 2, BIT_DBI_WFLAG >> 16);
flag = rtw_read8(rtwdev, REG_DBI_FLAG_V1 + 2);
rtw_write16(rtwdev, REG_DBI_FLAG_V1, read_addr);
rtw_write8(rtwdev, REG_DBI_FLAG_V1 + 2, BIT_DBI_RFLAG >> 16);
flag = rtw_read8(rtwdev, REG_DBI_FLAG_V1 + 2);