From 0aeac60394420de1952ebc230a6fa2f8593df80a Mon Sep 17 00:00:00 2001
From: Josh Blum <josh@joshknows.com>
Date: Wed, 24 Jul 2013 17:46:04 -0700
Subject: uhd: allow for 16 bit i2c and eeprom addrs

---
 host/lib/usrp/cores/i2c_core_100.cpp      |  4 ++--
 host/lib/usrp/cores/i2c_core_100_wb32.cpp | 12 ++++++++++--
 host/lib/usrp/cores/i2c_core_200.cpp      |  4 ++--
 3 files changed, 14 insertions(+), 6 deletions(-)

(limited to 'host/lib/usrp/cores')

diff --git a/host/lib/usrp/cores/i2c_core_100.cpp b/host/lib/usrp/cores/i2c_core_100.cpp
index ceeb3f518..9e8a226f2 100644
--- a/host/lib/usrp/cores/i2c_core_100.cpp
+++ b/host/lib/usrp/cores/i2c_core_100.cpp
@@ -70,7 +70,7 @@ public:
     }
 
     void write_i2c(
-        boost::uint8_t addr,
+        boost::uint16_t addr,
         const byte_vector_t &bytes
     ){
         _iface->poke16(REG_I2C_DATA, (addr << 1) | 0); //addr and read bit (0)
@@ -93,7 +93,7 @@ public:
     }
 
     byte_vector_t read_i2c(
-        boost::uint8_t addr,
+        boost::uint16_t addr,
         size_t num_bytes
     ){
         byte_vector_t bytes;
diff --git a/host/lib/usrp/cores/i2c_core_100_wb32.cpp b/host/lib/usrp/cores/i2c_core_100_wb32.cpp
index b38d5b4bc..df6e6ff72 100644
--- a/host/lib/usrp/cores/i2c_core_100_wb32.cpp
+++ b/host/lib/usrp/cores/i2c_core_100_wb32.cpp
@@ -72,7 +72,7 @@ public:
     }
 
     void write_i2c(
-        boost::uint8_t addr,
+        boost::uint16_t addr,
         const byte_vector_t &bytes
     ){
         _iface->poke32(REG_I2C_DATA, (addr << 1) | 0); //addr and read bit (0)
@@ -95,7 +95,7 @@ public:
     }
 
     byte_vector_t read_i2c(
-        boost::uint8_t addr,
+        boost::uint16_t addr,
         size_t num_bytes
     ){
         byte_vector_t bytes;
@@ -119,6 +119,14 @@ public:
         return bytes;
     }
 
+    //override read_eeprom so we can write once, read all N bytes
+    //the default implementation calls read i2c once per byte
+    byte_vector_t read_eeprom(boost::uint16_t addr, boost::uint16_t offset, size_t num_bytes)
+    {
+        this->write_i2c(addr, byte_vector_t(1, offset));
+        return this->read_i2c(addr, num_bytes);
+    }
+
 private:
     void i2c_wait(void) {
         for (size_t i = 0; i < 10; i++)
diff --git a/host/lib/usrp/cores/i2c_core_200.cpp b/host/lib/usrp/cores/i2c_core_200.cpp
index 1b882c54a..6010ac5a2 100644
--- a/host/lib/usrp/cores/i2c_core_200.cpp
+++ b/host/lib/usrp/cores/i2c_core_200.cpp
@@ -73,7 +73,7 @@ public:
     }
 
     void write_i2c(
-        boost::uint8_t addr,
+        boost::uint16_t addr,
         const byte_vector_t &bytes
     ){
         this->poke(REG_I2C_WR_DATA, (addr << 1) | 0); //addr and read bit (0)
@@ -96,7 +96,7 @@ public:
     }
 
     byte_vector_t read_i2c(
-        boost::uint8_t addr,
+        boost::uint16_t addr,
         size_t num_bytes
     ){
         byte_vector_t bytes;
-- 
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