diff options
Diffstat (limited to 'host/lib/usrp/mboard_eeprom.cpp')
| -rw-r--r-- | host/lib/usrp/mboard_eeprom.cpp | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/host/lib/usrp/mboard_eeprom.cpp b/host/lib/usrp/mboard_eeprom.cpp new file mode 100644 index 000000000..661030aa7 --- /dev/null +++ b/host/lib/usrp/mboard_eeprom.cpp @@ -0,0 +1,194 @@ +// +// Copyright 2010 Ettus Research LLC +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <http://www.gnu.org/licenses/>. +// + +#include <uhd/usrp/mboard_eeprom.hpp> +#include <uhd/types/mac_addr.hpp> +#include <uhd/utils/algorithm.hpp> +#include <boost/asio/ip/address_v4.hpp> +#include <boost/assign/list_of.hpp> +#include <boost/lexical_cast.hpp> +#include <boost/foreach.hpp> + +using namespace uhd; +using namespace uhd::usrp; + +/*********************************************************************** + * Constants + **********************************************************************/ +static const size_t SERIAL_LEN = 9; +static const size_t NAME_MAX_LEN = 32 - SERIAL_LEN; + +/*********************************************************************** + * Utility functions + **********************************************************************/ + +//! create a string from a byte vector, return empty if invalid ascii +static const std::string bytes_to_string(const byte_vector_t &bytes){ + std::string out; + BOOST_FOREACH(boost::uint8_t byte, bytes){ + if (byte < 32 or byte > 127) return out; + out += byte; + } + return out; +} + +//! create a byte vector from a string, null terminate unless max length +static const byte_vector_t string_to_bytes(const std::string &string, size_t max_length){ + byte_vector_t bytes; + for (size_t i = 0; i < std::min(string.size(), max_length); i++){ + bytes.push_back(string[i]); + } + if (bytes.size() < max_length - 1) bytes.push_back('\0'); + return bytes; +} + +/*********************************************************************** + * Implementation of N100 load/store + **********************************************************************/ +static const boost::uint8_t N100_EEPROM_ADDR = 0x50; + +static const uhd::dict<std::string, boost::uint8_t> USRP_N100_OFFSETS = boost::assign::map_list_of + ("rev-lsb-msb", 0x00) + ("mac-addr", 0x02) + ("ip-addr", 0x08) + //leave space here for other addresses (perhaps) + ("serial", 0x18) + ("name", 0x18 + SERIAL_LEN) +; + +static void load_n100(mboard_eeprom_t &mb_eeprom, i2c_iface &iface){ + //extract the revision number + byte_vector_t rev_lsb_msb = iface.read_eeprom(N100_EEPROM_ADDR, USRP_N100_OFFSETS["rev-lsb-msb"], 2); + boost::uint16_t rev = (boost::uint16_t(rev_lsb_msb.at(0)) << 0) | (boost::uint16_t(rev_lsb_msb.at(1)) << 8); + mb_eeprom["rev"] = boost::lexical_cast<std::string>(rev); + + //extract the addresses + mb_eeprom["mac-addr"] = mac_addr_t::from_bytes(iface.read_eeprom( + N100_EEPROM_ADDR, USRP_N100_OFFSETS["mac-addr"], 6 + )).to_string(); + + boost::asio::ip::address_v4::bytes_type ip_addr_bytes; + std::copy(iface.read_eeprom(N100_EEPROM_ADDR, USRP_N100_OFFSETS["ip-addr"], 4), ip_addr_bytes); + mb_eeprom["ip-addr"] = boost::asio::ip::address_v4(ip_addr_bytes).to_string(); + + //extract the serial + mb_eeprom["serial"] = bytes_to_string(iface.read_eeprom( + N100_EEPROM_ADDR, USRP_N100_OFFSETS["serial"], SERIAL_LEN + )); + + //extract the name + mb_eeprom["name"] = bytes_to_string(iface.read_eeprom( + 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"]; +} + +static void store_n100(const mboard_eeprom_t &mb_eeprom, i2c_iface &iface){ + //parse the revision number + if (mb_eeprom.has_key("rev")){ + boost::uint16_t rev = boost::lexical_cast<boost::uint16_t>(mb_eeprom["rev"]); + byte_vector_t rev_lsb_msb = boost::assign::list_of + (boost::uint8_t(rev >> 0)) + (boost::uint8_t(rev >> 8)) + ; + iface.write_eeprom(N100_EEPROM_ADDR, USRP_N100_OFFSETS["rev-lsb-msb"], rev_lsb_msb); + } + + //store the addresses + if (mb_eeprom.has_key("mac-addr")) iface.write_eeprom( + N100_EEPROM_ADDR, USRP_N100_OFFSETS["mac-addr"], + mac_addr_t::from_string(mb_eeprom["mac-addr"]).to_bytes() + ); + + if (mb_eeprom.has_key("ip-addr")){ + byte_vector_t ip_addr_bytes(4); + std::copy(boost::asio::ip::address_v4::from_string(mb_eeprom["ip-addr"]).to_bytes(), ip_addr_bytes); + iface.write_eeprom(N100_EEPROM_ADDR, USRP_N100_OFFSETS["ip-addr"], ip_addr_bytes); + } + + //store the serial + if (mb_eeprom.has_key("serial")) iface.write_eeprom( + N100_EEPROM_ADDR, USRP_N100_OFFSETS["serial"], + string_to_bytes(mb_eeprom["serial"], SERIAL_LEN) + ); + + //store the name + if (mb_eeprom.has_key("name")) iface.write_eeprom( + N100_EEPROM_ADDR, USRP_N100_OFFSETS["name"], + string_to_bytes(mb_eeprom["name"], NAME_MAX_LEN) + ); +} + +/*********************************************************************** + * Implementation of B000 load/store + **********************************************************************/ +static const boost::uint8_t B000_EEPROM_ADDR = 0x50; +static const size_t B000X_SERIAL_LEN = 8; + +static const uhd::dict<std::string, boost::uint8_t> USRP_B000_OFFSETS = boost::assign::map_list_of + ("serial", 0xf8) + ("name", 0xf8 - NAME_MAX_LEN) +; + +static void load_b000(mboard_eeprom_t &mb_eeprom, i2c_iface &iface){ + //extract the serial + mb_eeprom["serial"] = bytes_to_string(iface.read_eeprom( + B000_EEPROM_ADDR, USRP_B000_OFFSETS["serial"], B000X_SERIAL_LEN + )); + + //extract the name + mb_eeprom["name"] = bytes_to_string(iface.read_eeprom( + B000_EEPROM_ADDR, USRP_B000_OFFSETS["name"], NAME_MAX_LEN + )); +} + +static void store_b000(const mboard_eeprom_t &mb_eeprom, i2c_iface &iface){ + //store the serial + if (mb_eeprom.has_key("serial")) iface.write_eeprom( + B000_EEPROM_ADDR, USRP_B000_OFFSETS["serial"], + string_to_bytes(mb_eeprom["serial"], B000X_SERIAL_LEN) + ); + + //store the name + if (mb_eeprom.has_key("name")) iface.write_eeprom( + B000_EEPROM_ADDR, USRP_B000_OFFSETS["name"], + string_to_bytes(mb_eeprom["name"], NAME_MAX_LEN) + ); +} + +/*********************************************************************** + * Implementation of mboard eeprom + **********************************************************************/ +mboard_eeprom_t::mboard_eeprom_t(void){ + /* NOP */ +} + +mboard_eeprom_t::mboard_eeprom_t(i2c_iface &iface, map_type map){ + switch(map){ + case MAP_N100: load_n100(*this, iface); break; + case MAP_B000: load_b000(*this, iface); break; + } +} + +void mboard_eeprom_t::commit(i2c_iface &iface, map_type map){ + switch(map){ + case MAP_N100: store_n100(*this, iface); break; + case MAP_B000: store_b000(*this, iface); break; + } +} |