diff options
| -rw-r--r-- | host/lib/usrp/mboard_eeprom.cpp | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/host/lib/usrp/mboard_eeprom.cpp b/host/lib/usrp/mboard_eeprom.cpp index 863a80191..9cc252380 100644 --- a/host/lib/usrp/mboard_eeprom.cpp +++ b/host/lib/usrp/mboard_eeprom.cpp @@ -97,8 +97,14 @@ static void load_n100(mboard_eeprom_t &mb_eeprom, i2c_iface &iface){ N100_EEPROM_ADDR, USRP_N100_OFFSETS["name"], NAME_MAX_LEN )); - //empty serial correction: use the mac address - if (mb_eeprom["serial"].empty()) mb_eeprom["serial"] = mb_eeprom["mac-addr"]; + //Empty serial correction: use the mac address to determine serial. + //Older usrp2 models don't have a serial burned into EEPROM. + //The lower mac address bits will function as the serial number. + if (mb_eeprom["serial"].empty()){ + byte_vector_t mac_addr_bytes = mac_addr_t::from_string(mb_eeprom["mac-addr"]).to_bytes(); + unsigned serial = mac_addr_bytes.at(5) | (unsigned(mac_addr_bytes.at(4) & 0x0f) << 8); + mb_eeprom["serial"] = boost::lexical_cast<std::string>(serial); + } } static void store_n100(const mboard_eeprom_t &mb_eeprom, i2c_iface &iface){ |