uhd: Changed mboard_eeprom_t interface, refactored MB EEPROM code

- uhd::usrp::mboard_eeprom_t is now simply a map. Its commit() method
  has no utility being a public API call, because the user never gets
  access to the appropriate I2C object (Minor API breakage)
- The central mboard_eeprom.cpp file was broken up and put into many
  smaller compilation units in every device's implementation folder.
- Renamed some of the constants (e.g. B000_* -> USRP1_*, N100_* ->
  N200_*)
- Removed the N000_* EEPROM code, because, well, you know, there's no
  such device

1 files changed, 82 insertions, 0 deletions

diff --git a/host/lib/usrp/b200/b200_mb_eeprom.cpp b/host/lib/usrp/b200/b200_mb_eeprom.cpp
new file mode 100644
index 000000000..e56e6f2ec
--- /dev/null
+++ b/host/lib/usrp/b200/b200_mb_eeprom.cpp
@@ -0,0 +1,82 @@
+//
+// Copyright 2017 Ettus Research (National Instruments Corp.)
+//
+// SPDX-License-Identifier: GPL-3.0
+//
+
+#include "b200_impl.hpp"
+#include "eeprom_utils.hpp"
+#include <uhd/usrp/mboard_eeprom.hpp>
+
+namespace {
+    /* On the B200, this field indicates the slave address. From the FX3, this
+     * address is always 0. */
+    static const uint8_t B200_EEPROM_SLAVE_ADDR = 0x04;
+
+    //use char array so we dont need to attribute packed
+    struct b200_eeprom_map{
+        unsigned char _r[220];
+        unsigned char revision[2];
+        unsigned char product[2];
+        unsigned char name[NAME_MAX_LEN];
+        unsigned char serial[SERIAL_LEN];
+    };
+}
+
+using namespace uhd;
+using uhd::usrp::mboard_eeprom_t;
+
+mboard_eeprom_t b200_impl::get_mb_eeprom(uhd::i2c_iface::sptr iface)
+{
+    mboard_eeprom_t mb_eeprom;
+
+    //extract the revision number
+    mb_eeprom["revision"] = uint16_bytes_to_string(
+        iface->read_eeprom(B200_EEPROM_SLAVE_ADDR, offsetof(b200_eeprom_map, revision), 2)
+    );
+
+    //extract the product code
+    mb_eeprom["product"] = uint16_bytes_to_string(
+        iface->read_eeprom(B200_EEPROM_SLAVE_ADDR, offsetof(b200_eeprom_map, product), 2)
+    );
+
+    //extract the serial
+    mb_eeprom["serial"] = bytes_to_string(iface->read_eeprom(
+        B200_EEPROM_SLAVE_ADDR, offsetof(b200_eeprom_map, serial), SERIAL_LEN
+    ));
+
+    //extract the name
+    mb_eeprom["name"] = bytes_to_string(iface->read_eeprom(
+        B200_EEPROM_SLAVE_ADDR, offsetof(b200_eeprom_map, name), NAME_MAX_LEN
+    ));
+
+    return mb_eeprom;
+}
+
+void b200_impl::set_mb_eeprom(const mboard_eeprom_t &mb_eeprom)
+{
+    //parse the revision number
+    if (mb_eeprom.has_key("revision")) _iface->write_eeprom(
+        B200_EEPROM_SLAVE_ADDR, offsetof(b200_eeprom_map, revision),
+        string_to_uint16_bytes(mb_eeprom["revision"])
+    );
+
+    //parse the product code
+    if (mb_eeprom.has_key("product")) _iface->write_eeprom(
+        B200_EEPROM_SLAVE_ADDR, offsetof(b200_eeprom_map, product),
+        string_to_uint16_bytes(mb_eeprom["product"])
+    );
+
+    //store the serial
+    if (mb_eeprom.has_key("serial")) _iface->write_eeprom(
+        B200_EEPROM_SLAVE_ADDR, offsetof(b200_eeprom_map, serial),
+        string_to_bytes(mb_eeprom["serial"], SERIAL_LEN)
+    );
+
+    //store the name
+    if (mb_eeprom.has_key("name")) _iface->write_eeprom(
+        B200_EEPROM_SLAVE_ADDR, offsetof(b200_eeprom_map, name),
+        string_to_bytes(mb_eeprom["name"], NAME_MAX_LEN)
+    );
+}
+