diff --git a/.gitmodules b/.gitmodules
index ac45ea7..ec5c0e8 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,6 +7,6 @@
 [submodule "uart/flash"]
 	path = uart/flash
 	url = git@git.blackmark.me:avr/flash.git
-[submodule "uart/type"]
-	path = uart/type
-	url = git@git.blackmark.me:avr/type.git
+[submodule "uart/util"]
+	path = uart/util
+	url = git@git.blackmark.me:avr/util.git
diff --git a/uart/type b/uart/type
deleted file mode 160000
index ce31ef0..0000000
--- a/uart/type
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit ce31ef017f738baaca6f0cbf99dac9d59b5e6811
diff --git a/uart/uart b/uart/uart
index 8f88cdc..119de32 160000
--- a/uart/uart
+++ b/uart/uart
@@ -1 +1 @@
-Subproject commit 8f88cdccea6b8f1f8521bcad6724cacb1e6acbcf
+Subproject commit 119de3244588b19b4afb06f33f66f22bb80a89b5
diff --git a/uart/uart.cppproj b/uart/uart.cppproj
index 0027b44..7eb2f9e 100644
--- a/uart/uart.cppproj
+++ b/uart/uart.cppproj
@@ -47,6 +47,17 @@
     <avrtoolinterfaceclock>125000</avrtoolinterfaceclock>
     <AAFDebugger>
       <AAFDebugFiles>
+        <DebugFile>
+          <path>\Debug\uart.lss</path>
+          <AAFSetting>
+            <Label>Lss Files</Label>
+            <Extention>.lss</Extention>
+            <Regex>^\s*(?&lt;address&gt;[a-f0-9]*):\s*.*$</Regex>
+            <DebugEnabled>true</DebugEnabled>
+            <RegexGroups>address</RegexGroups>
+            <DebuggerExpression>$pc</DebuggerExpression>
+          </AAFSetting>
+        </DebugFile>
       </AAFDebugFiles>
     </AAFDebugger>
     <AsfFrameworkConfig>
@@ -77,119 +88,119 @@
   <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
     <ToolchainSettings>
       <AvrGccCpp>
-  <avrgcc.common.Device>-mmcu=atmega1284p</avrgcc.common.Device>
-  <avrgcc.common.optimization.RelaxBranches>True</avrgcc.common.optimization.RelaxBranches>
-  <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
-  <avrgcc.common.outputfiles.lss>True</avrgcc.common.outputfiles.lss>
-  <avrgcc.common.outputfiles.eep>True</avrgcc.common.outputfiles.eep>
-  <avrgcc.common.outputfiles.srec>True</avrgcc.common.outputfiles.srec>
-  <avrgcc.common.outputfiles.usersignatures>False</avrgcc.common.outputfiles.usersignatures>
-  <avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>
-  <avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>
-  <avrgcc.compiler.symbols.DefSymbols>
-    <ListValues>
-      <Value>NDEBUG</Value>
-    </ListValues>
-  </avrgcc.compiler.symbols.DefSymbols>
-  <avrgcc.compiler.directories.IncludePaths>
-    <ListValues>
-      <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.3.300\include</Value>
-    </ListValues>
-  </avrgcc.compiler.directories.IncludePaths>
-  <avrgcc.compiler.optimization.level>Optimize for size (-Os)</avrgcc.compiler.optimization.level>
-  <avrgcc.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcc.compiler.optimization.AllocateBytesNeededForEnum>
-  <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
-  <avrgcc.compiler.warnings.ExtraWarnings>True</avrgcc.compiler.warnings.ExtraWarnings>
-  <avrgcc.compiler.warnings.Pedantic>True</avrgcc.compiler.warnings.Pedantic>
-  <avrgcc.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -std=c11</avrgcc.compiler.miscellaneous.OtherFlags>
-  <avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>
-  <avrgcccpp.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcccpp.compiler.general.ChangeDefaultBitFieldUnsigned>
-  <avrgcccpp.compiler.symbols.DefSymbols>
-    <ListValues>
-      <Value>NDEBUG</Value>
-    </ListValues>
-  </avrgcccpp.compiler.symbols.DefSymbols>
-  <avrgcccpp.compiler.directories.IncludePaths>
-    <ListValues>
-      <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.3.300\include</Value>
-    </ListValues>
-  </avrgcccpp.compiler.directories.IncludePaths>
-  <avrgcccpp.compiler.optimization.level>Optimize for size (-Os)</avrgcccpp.compiler.optimization.level>
-  <avrgcccpp.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcccpp.compiler.optimization.AllocateBytesNeededForEnum>
-  <avrgcccpp.compiler.warnings.AllWarnings>True</avrgcccpp.compiler.warnings.AllWarnings>
-  <avrgcccpp.compiler.warnings.Pedantic>True</avrgcccpp.compiler.warnings.Pedantic>
-  <avrgcccpp.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -Wextra -std=c++17</avrgcccpp.compiler.miscellaneous.OtherFlags>
-  <avrgcccpp.linker.libraries.Libraries>
-    <ListValues>
-      <Value>libm</Value>
-    </ListValues>
-  </avrgcccpp.linker.libraries.Libraries>
-  <avrgcccpp.assembler.general.IncludePaths>
-    <ListValues>
-      <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.3.300\include</Value>
-    </ListValues>
-  </avrgcccpp.assembler.general.IncludePaths>
-</AvrGccCpp>
+        <avrgcc.common.Device>-mmcu=atmega1284p</avrgcc.common.Device>
+        <avrgcc.common.optimization.RelaxBranches>True</avrgcc.common.optimization.RelaxBranches>
+        <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
+        <avrgcc.common.outputfiles.lss>True</avrgcc.common.outputfiles.lss>
+        <avrgcc.common.outputfiles.eep>True</avrgcc.common.outputfiles.eep>
+        <avrgcc.common.outputfiles.srec>True</avrgcc.common.outputfiles.srec>
+        <avrgcc.common.outputfiles.usersignatures>False</avrgcc.common.outputfiles.usersignatures>
+        <avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>
+        <avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>
+        <avrgcc.compiler.symbols.DefSymbols>
+          <ListValues>
+            <Value>NDEBUG</Value>
+          </ListValues>
+        </avrgcc.compiler.symbols.DefSymbols>
+        <avrgcc.compiler.directories.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.3.300\include</Value>
+          </ListValues>
+        </avrgcc.compiler.directories.IncludePaths>
+        <avrgcc.compiler.optimization.level>Optimize for size (-Os)</avrgcc.compiler.optimization.level>
+        <avrgcc.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcc.compiler.optimization.AllocateBytesNeededForEnum>
+        <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
+        <avrgcc.compiler.warnings.ExtraWarnings>True</avrgcc.compiler.warnings.ExtraWarnings>
+        <avrgcc.compiler.warnings.Pedantic>True</avrgcc.compiler.warnings.Pedantic>
+        <avrgcc.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -std=c11</avrgcc.compiler.miscellaneous.OtherFlags>
+        <avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>
+        <avrgcccpp.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcccpp.compiler.general.ChangeDefaultBitFieldUnsigned>
+        <avrgcccpp.compiler.symbols.DefSymbols>
+          <ListValues>
+            <Value>NDEBUG</Value>
+          </ListValues>
+        </avrgcccpp.compiler.symbols.DefSymbols>
+        <avrgcccpp.compiler.directories.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.3.300\include</Value>
+          </ListValues>
+        </avrgcccpp.compiler.directories.IncludePaths>
+        <avrgcccpp.compiler.optimization.level>Optimize for size (-Os)</avrgcccpp.compiler.optimization.level>
+        <avrgcccpp.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcccpp.compiler.optimization.AllocateBytesNeededForEnum>
+        <avrgcccpp.compiler.warnings.AllWarnings>True</avrgcccpp.compiler.warnings.AllWarnings>
+        <avrgcccpp.compiler.warnings.Pedantic>True</avrgcccpp.compiler.warnings.Pedantic>
+        <avrgcccpp.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -Wextra -std=c++17</avrgcccpp.compiler.miscellaneous.OtherFlags>
+        <avrgcccpp.linker.libraries.Libraries>
+          <ListValues>
+            <Value>libm</Value>
+          </ListValues>
+        </avrgcccpp.linker.libraries.Libraries>
+        <avrgcccpp.assembler.general.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.3.300\include</Value>
+          </ListValues>
+        </avrgcccpp.assembler.general.IncludePaths>
+      </AvrGccCpp>
     </ToolchainSettings>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
     <ToolchainSettings>
       <AvrGccCpp>
-  <avrgcc.common.Device>-mmcu=atmega1284p</avrgcc.common.Device>
-  <avrgcc.common.optimization.RelaxBranches>True</avrgcc.common.optimization.RelaxBranches>
-  <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
-  <avrgcc.common.outputfiles.lss>True</avrgcc.common.outputfiles.lss>
-  <avrgcc.common.outputfiles.eep>True</avrgcc.common.outputfiles.eep>
-  <avrgcc.common.outputfiles.srec>True</avrgcc.common.outputfiles.srec>
-  <avrgcc.common.outputfiles.usersignatures>False</avrgcc.common.outputfiles.usersignatures>
-  <avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>
-  <avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>
-  <avrgcc.compiler.symbols.DefSymbols>
-    <ListValues>
-      <Value>DEBUG</Value>
-    </ListValues>
-  </avrgcc.compiler.symbols.DefSymbols>
-  <avrgcc.compiler.directories.IncludePaths>
-    <ListValues>
-      <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.3.300\include</Value>
-    </ListValues>
-  </avrgcc.compiler.directories.IncludePaths>
-  <avrgcc.compiler.optimization.level>Optimize (-O1)</avrgcc.compiler.optimization.level>
-  <avrgcc.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcc.compiler.optimization.AllocateBytesNeededForEnum>
-  <avrgcc.compiler.optimization.DebugLevel>Maximum (-g3)</avrgcc.compiler.optimization.DebugLevel>
-  <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
-  <avrgcc.compiler.warnings.ExtraWarnings>True</avrgcc.compiler.warnings.ExtraWarnings>
-  <avrgcc.compiler.warnings.Pedantic>True</avrgcc.compiler.warnings.Pedantic>
-  <avrgcc.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -std=c11</avrgcc.compiler.miscellaneous.OtherFlags>
-  <avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>
-  <avrgcccpp.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcccpp.compiler.general.ChangeDefaultBitFieldUnsigned>
-  <avrgcccpp.compiler.symbols.DefSymbols>
-    <ListValues>
-      <Value>DEBUG</Value>
-    </ListValues>
-  </avrgcccpp.compiler.symbols.DefSymbols>
-  <avrgcccpp.compiler.directories.IncludePaths>
-    <ListValues>
-      <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.3.300\include</Value>
-    </ListValues>
-  </avrgcccpp.compiler.directories.IncludePaths>
-  <avrgcccpp.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcccpp.compiler.optimization.AllocateBytesNeededForEnum>
-  <avrgcccpp.compiler.optimization.DebugLevel>Maximum (-g3)</avrgcccpp.compiler.optimization.DebugLevel>
-  <avrgcccpp.compiler.warnings.AllWarnings>True</avrgcccpp.compiler.warnings.AllWarnings>
-  <avrgcccpp.compiler.warnings.Pedantic>True</avrgcccpp.compiler.warnings.Pedantic>
-  <avrgcccpp.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -Wextra -std=c++17</avrgcccpp.compiler.miscellaneous.OtherFlags>
-  <avrgcccpp.linker.libraries.Libraries>
-    <ListValues>
-      <Value>libm</Value>
-    </ListValues>
-  </avrgcccpp.linker.libraries.Libraries>
-  <avrgcccpp.assembler.general.IncludePaths>
-    <ListValues>
-      <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.3.300\include</Value>
-    </ListValues>
-  </avrgcccpp.assembler.general.IncludePaths>
-  <avrgcccpp.assembler.debugging.DebugLevel>Default (-Wa,-g)</avrgcccpp.assembler.debugging.DebugLevel>
-</AvrGccCpp>
+        <avrgcc.common.Device>-mmcu=atmega1284p</avrgcc.common.Device>
+        <avrgcc.common.optimization.RelaxBranches>True</avrgcc.common.optimization.RelaxBranches>
+        <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
+        <avrgcc.common.outputfiles.lss>True</avrgcc.common.outputfiles.lss>
+        <avrgcc.common.outputfiles.eep>True</avrgcc.common.outputfiles.eep>
+        <avrgcc.common.outputfiles.srec>True</avrgcc.common.outputfiles.srec>
+        <avrgcc.common.outputfiles.usersignatures>False</avrgcc.common.outputfiles.usersignatures>
+        <avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>
+        <avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>
+        <avrgcc.compiler.symbols.DefSymbols>
+          <ListValues>
+            <Value>DEBUG</Value>
+          </ListValues>
+        </avrgcc.compiler.symbols.DefSymbols>
+        <avrgcc.compiler.directories.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.3.300\include</Value>
+          </ListValues>
+        </avrgcc.compiler.directories.IncludePaths>
+        <avrgcc.compiler.optimization.level>Optimize (-O1)</avrgcc.compiler.optimization.level>
+        <avrgcc.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcc.compiler.optimization.AllocateBytesNeededForEnum>
+        <avrgcc.compiler.optimization.DebugLevel>Maximum (-g3)</avrgcc.compiler.optimization.DebugLevel>
+        <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
+        <avrgcc.compiler.warnings.ExtraWarnings>True</avrgcc.compiler.warnings.ExtraWarnings>
+        <avrgcc.compiler.warnings.Pedantic>True</avrgcc.compiler.warnings.Pedantic>
+        <avrgcc.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -std=c11</avrgcc.compiler.miscellaneous.OtherFlags>
+        <avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcccpp.compiler.general.ChangeDefaultCharTypeUnsigned>
+        <avrgcccpp.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcccpp.compiler.general.ChangeDefaultBitFieldUnsigned>
+        <avrgcccpp.compiler.symbols.DefSymbols>
+          <ListValues>
+            <Value>DEBUG</Value>
+          </ListValues>
+        </avrgcccpp.compiler.symbols.DefSymbols>
+        <avrgcccpp.compiler.directories.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.3.300\include</Value>
+          </ListValues>
+        </avrgcccpp.compiler.directories.IncludePaths>
+        <avrgcccpp.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcccpp.compiler.optimization.AllocateBytesNeededForEnum>
+        <avrgcccpp.compiler.optimization.DebugLevel>Maximum (-g3)</avrgcccpp.compiler.optimization.DebugLevel>
+        <avrgcccpp.compiler.warnings.AllWarnings>True</avrgcccpp.compiler.warnings.AllWarnings>
+        <avrgcccpp.compiler.warnings.Pedantic>True</avrgcccpp.compiler.warnings.Pedantic>
+        <avrgcccpp.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -Wextra -std=c++17</avrgcccpp.compiler.miscellaneous.OtherFlags>
+        <avrgcccpp.linker.libraries.Libraries>
+          <ListValues>
+            <Value>libm</Value>
+          </ListValues>
+        </avrgcccpp.linker.libraries.Libraries>
+        <avrgcccpp.assembler.general.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.3.300\include</Value>
+          </ListValues>
+        </avrgcccpp.assembler.general.IncludePaths>
+        <avrgcccpp.assembler.debugging.DebugLevel>Default (-Wa,-g)</avrgcccpp.assembler.debugging.DebugLevel>
+      </AvrGccCpp>
     </ToolchainSettings>
   </PropertyGroup>
   <ItemGroup>
@@ -205,9 +216,6 @@
     <Compile Include="main.cpp">
       <SubType>compile</SubType>
     </Compile>
-    <Compile Include="type\type.hpp">
-      <SubType>compile</SubType>
-    </Compile>
     <Compile Include="uart\config.hpp">
       <SubType>compile</SubType>
     </Compile>
@@ -226,11 +234,20 @@
     <Compile Include="uart\uart.hpp">
       <SubType>compile</SubType>
     </Compile>
+    <Compile Include="util\func.hpp">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="util\type.hpp">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="util\util.hpp">
+      <SubType>compile</SubType>
+    </Compile>
   </ItemGroup>
   <ItemGroup>
     <Folder Include="io" />
     <Folder Include="flash" />
-    <Folder Include="type" />
+    <Folder Include="util" />
     <Folder Include="uart" />
   </ItemGroup>
   <Import Project="$(AVRSTUDIO_EXE_PATH)\\Vs\\Compiler.targets" />
diff --git a/uart/util b/uart/util
new file mode 160000
index 0000000..81b3ae2
--- /dev/null
+++ b/uart/util
@@ -0,0 +1 @@
+Subproject commit 81b3ae244c9773e7ea8ee08af43193275db48514