diff --git a/include/etl/crc.h b/include/etl/crc.h
index da8dd0a43..eab6d7bc2 100644
--- a/include/etl/crc.h
+++ b/include/etl/crc.h
@@ -31,6 +31,8 @@ SOFTWARE.
 #ifndef ETL_CRC_INCLUDED
 #define ETL_CRC_INCLUDED
 
+#include "crc1.h"
+
 #include "crc8_ccitt.h"
 #include "crc8_cdma2000.h"
 #include "crc8_darc.h"
diff --git a/include/etl/crc1.h b/include/etl/crc1.h
new file mode 100644
index 000000000..2eaf923e8
--- /dev/null
+++ b/include/etl/crc1.h
@@ -0,0 +1,105 @@
+///\file
+
+/******************************************************************************
+The MIT License(MIT)
+
+Embedded Template Library.
+https://github.com/ETLCPP/etl
+https://www.etlcpp.com
+
+Copyright(c) 2023 John Wellbelove
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files(the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions :
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+******************************************************************************/
+
+#ifndef ETL_CRC1_INCLUDED
+#define ETL_CRC1_INCLUDED
+
+#include "platform.h"
+#include "frame_check_sequence.h"
+#include "binary.h"
+
+namespace etl
+{
+  //***************************************************************************
+  /// fnv_1 policy.
+  /// Calculates FNV1.
+  //***************************************************************************
+  struct crc1_policy
+  {
+    typedef uint8_t value_type;
+
+    enum
+    {
+      Odd_Parity  = 1,
+      Even_Parity = 0
+    };
+
+    //*********************************
+    value_type initial() const
+    {
+      return Even_Parity;
+    }
+
+    //*********************************
+    uint8_t add(int parity, uint8_t value) const
+    {
+      return parity ^ etl::parity(value);
+    }
+
+    //*********************************
+    uint8_t final(uint8_t parity) const
+    {
+      return parity;
+    }
+  };
+
+  class crc1 : public etl::frame_check_sequence<crc1_policy>
+  {
+  public:
+
+    enum
+    {
+      Odd_Parity  = crc1_policy::Odd_Parity,
+      Even_Parity = crc1_policy::Even_Parity
+    };
+
+    //*************************************************************************
+    /// Default constructor.
+    //*************************************************************************
+    crc1()
+    {
+      this->reset();
+    }
+
+    //*************************************************************************
+    /// Constructor from range.
+    /// \param begin Start of the range.
+    /// \param end   End of the range.
+    //*************************************************************************
+    template<typename TIterator>
+    crc1(TIterator begin, const TIterator end)
+    {
+      this->reset();
+      this->add(begin, end);
+    }
+  };
+}
+
+#endif
diff --git a/test/test_crc1.cpp b/test/test_crc1.cpp
new file mode 100644
index 000000000..3b87c9044
--- /dev/null
+++ b/test/test_crc1.cpp
@@ -0,0 +1,128 @@
+/******************************************************************************
+The MIT License(MIT)
+
+Embedded Template Library.
+https://github.com/ETLCPP/etl
+https://www.etlcpp.com
+
+Copyright(c) 2023 John Wellbelove
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files(the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions :
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+******************************************************************************/
+
+#include "unit_test_framework.h"
+
+#include <iterator>
+#include <string>
+#include <vector>
+#include <stdint.h>
+
+#include "etl/crc1.h"
+
+namespace
+{
+  //***************************************************************************
+  template <typename TIterator>
+  int calculate_parity(TIterator b, TIterator e)
+  {
+    size_t count = 0;
+
+    while (b != e)
+    {
+      count += etl::count_bits(*b);
+      ++b;
+    }
+
+    return ((count &= 1) == 0) ? etl::crc1::Even_Parity : etl::crc1::Odd_Parity;
+  }
+
+  SUITE(test_crc1)
+  {
+    //*************************************************************************
+    TEST(test_crc1_constructor)
+    {
+      std::string data("123456789");
+
+      uint8_t crc = etl::crc1(data.begin(), data.end());
+
+      CHECK_EQUAL(calculate_parity(data.begin(), data.end()), int(crc));
+    }
+
+    //*************************************************************************
+    TEST(test_crc1_add_values)
+    {
+      std::string data("123456789");
+
+      etl::crc1 crc_calculator;
+
+      for (size_t i = 0UL; i < data.size(); ++i)
+      {
+        crc_calculator.add(data[i]);
+      }
+
+      uint8_t crc = crc_calculator;
+
+      CHECK_EQUAL(calculate_parity(data.begin(), data.end()), int(crc));
+    }
+
+    //*************************************************************************
+    TEST(test_crc1_add_range)
+    {
+      std::string data("123456789");
+
+      etl::crc1 crc_calculator;
+
+      crc_calculator.add(data.begin(), data.end());
+
+      uint8_t crc = crc_calculator.value();
+
+      CHECK_EQUAL(calculate_parity(data.begin(), data.end()), int(crc));
+    }
+
+    //*************************************************************************
+    TEST(test_crc1_add_range_via_iterator)
+    {
+      std::string data("123456789");
+
+      etl::crc1 crc_calculator;
+
+      std::copy(data.begin(), data.end(), crc_calculator.input());
+
+      uint8_t crc = crc_calculator.value();
+
+      CHECK_EQUAL(calculate_parity(data.begin(), data.end()), int(crc));
+    }
+
+    //*************************************************************************
+    TEST(test_crc1_add_range_endian)
+    {
+      std::vector<uint8_t>  data1 = { 0x01U, 0x02U, 0x03U, 0x04U, 0x05U, 0x06U, 0x07U, 0x08U };
+      std::vector<uint32_t> data2 = { 0x04030201UL, 0x08070605UL };
+      std::vector<uint8_t>  data3 = { 0x08U, 0x07U, 0x06U, 0x05U, 0x04U, 0x03U, 0x02U, 0x01U };
+
+      uint8_t crc1 = etl::crc1(data1.begin(), data1.end());
+      uint8_t crc2 = etl::crc1((uint8_t*)&data2[0], (uint8_t*)(&data2[0] + data2.size()));
+      CHECK_EQUAL(int(crc1), int(crc2));
+
+      uint8_t crc3 = etl::crc1(data3.rbegin(), data3.rend());
+      CHECK_EQUAL(int(crc1), int(crc3));
+    }
+  };
+}
+
diff --git a/test/test_crc8_ccitt.cpp b/test/test_crc8_ccitt.cpp
index 9c042943a..bb531a681 100644
--- a/test/test_crc8_ccitt.cpp
+++ b/test/test_crc8_ccitt.cpp
@@ -41,7 +41,7 @@ SOFTWARE.
 
 namespace
 {
-  SUITE(test_crc_experimental)
+  SUITE(test_crc8_ccitt)
   {
     //*************************************************************************
     // Table size 4
diff --git a/test/test_crc8_cdma2000.cpp b/test/test_crc8_cdma2000.cpp
index 629d17a72..bf43d73e5 100644
--- a/test/test_crc8_cdma2000.cpp
+++ b/test/test_crc8_cdma2000.cpp
@@ -41,7 +41,7 @@ SOFTWARE.
 
 namespace
 {
-  SUITE(test_crc_experimental)
+  SUITE(test_crc_crc8_cdma2000)
   {
     //*************************************************************************
     // Table size 4
diff --git a/test/test_crc8_darc.cpp b/test/test_crc8_darc.cpp
index 0e97b8ab0..098ca4ce9 100644
--- a/test/test_crc8_darc.cpp
+++ b/test/test_crc8_darc.cpp
@@ -41,7 +41,7 @@ SOFTWARE.
 
 namespace
 {
-  SUITE(test_crc_experimental)
+  SUITE(test_crc8_darc)
   {
     //*************************************************************************
     // Table size 4
diff --git a/test/test_crc8_dvbs2.cpp b/test/test_crc8_dvbs2.cpp
index 8f80413db..54667146e 100644
--- a/test/test_crc8_dvbs2.cpp
+++ b/test/test_crc8_dvbs2.cpp
@@ -41,7 +41,7 @@ SOFTWARE.
 
 namespace
 {
-  SUITE(test_crc_experimental)
+  SUITE(test_crc8_dvbs2)
   {
     //*************************************************************************
     // Table size 4
diff --git a/test/test_crc8_ebu.cpp b/test/test_crc8_ebu.cpp
index 91ac9f578..0e378e934 100644
--- a/test/test_crc8_ebu.cpp
+++ b/test/test_crc8_ebu.cpp
@@ -41,7 +41,7 @@ SOFTWARE.
 
 namespace
 {
-  SUITE(test_crc_experimental)
+  SUITE(test_crc8_ebu)
   {
     //*************************************************************************
     // Table size 4
diff --git a/test/test_crc8_icode.cpp b/test/test_crc8_icode.cpp
index e01225c12..32fd5468b 100644
--- a/test/test_crc8_icode.cpp
+++ b/test/test_crc8_icode.cpp
@@ -41,7 +41,7 @@ SOFTWARE.
 
 namespace
 {
-  SUITE(test_crc_experimental)
+  SUITE(test_crc8_icode)
   {
     //*************************************************************************
     // Table size 4
diff --git a/test/test_crc8_itu.cpp b/test/test_crc8_itu.cpp
index aa9bbdd0d..6a14613fa 100644
--- a/test/test_crc8_itu.cpp
+++ b/test/test_crc8_itu.cpp
@@ -41,7 +41,7 @@ SOFTWARE.
 
 namespace
 {
-  SUITE(test_crc_experimental)
+  SUITE(test_crc8_itu)
   {
     //*************************************************************************
     // Table size 4
diff --git a/test/test_crc8_maxim.cpp b/test/test_crc8_maxim.cpp
index 035c80682..8c68d85cf 100644
--- a/test/test_crc8_maxim.cpp
+++ b/test/test_crc8_maxim.cpp
@@ -41,7 +41,7 @@ SOFTWARE.
 
 namespace
 {
-  SUITE(test_crc_experimental)
+  SUITE(test_crc8_maxim)
   {
     //*************************************************************************
     // Table size 4
diff --git a/test/test_crc8_rohc.cpp b/test/test_crc8_rohc.cpp
index a03b964d0..366474fce 100644
--- a/test/test_crc8_rohc.cpp
+++ b/test/test_crc8_rohc.cpp
@@ -41,7 +41,7 @@ SOFTWARE.
 
 namespace
 {
-  SUITE(test_crc_experimental)
+  SUITE(test_crc8_rohc)
   {
     //*************************************************************************
     // Table size 4
diff --git a/test/test_crc8_wcdma.cpp b/test/test_crc8_wcdma.cpp
index 14faaafe8..7dfc5215d 100644
--- a/test/test_crc8_wcdma.cpp
+++ b/test/test_crc8_wcdma.cpp
@@ -41,7 +41,7 @@ SOFTWARE.
 
 namespace
 {
-  SUITE(test_crc_experimental)
+  SUITE(test_crc8_wcdma)
   {
     //*************************************************************************
     // Table size 4
diff --git a/test/vs2022/etl.vcxproj b/test/vs2022/etl.vcxproj
index 50d71f988..4c18142c7 100644
--- a/test/vs2022/etl.vcxproj
+++ b/test/vs2022/etl.vcxproj
@@ -2951,6 +2951,7 @@
     <ClInclude Include="..\..\include\etl\correlation.h" />
     <ClInclude Include="..\..\include\etl\covariance.h" />
     <ClInclude Include="..\..\include\etl\crc.h" />
+    <ClInclude Include="..\..\include\etl\crc1.h" />
     <ClInclude Include="..\..\include\etl\crc16.h" />
     <ClInclude Include="..\..\include\etl\crc16_a.h" />
     <ClInclude Include="..\..\include\etl\crc16_arc.h" />
@@ -7309,6 +7310,7 @@
     <ClCompile Include="..\test_circular_iterator.cpp" />
     <ClCompile Include="..\test_correlation.cpp" />
     <ClCompile Include="..\test_covariance.cpp" />
+    <ClCompile Include="..\test_crc1.cpp" />
     <ClCompile Include="..\test_crc16.cpp" />
     <ClCompile Include="..\test_crc16_a.cpp" />
     <ClCompile Include="..\test_crc16_arc.cpp" />
diff --git a/test/vs2022/etl.vcxproj.filters b/test/vs2022/etl.vcxproj.filters
index d4dfc25b7..2adfa8622 100644
--- a/test/vs2022/etl.vcxproj.filters
+++ b/test/vs2022/etl.vcxproj.filters
@@ -1386,6 +1386,9 @@
     <ClInclude Include="..\..\include\etl\to_u8string.h">
       <Filter>ETL\Strings</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\etl\crc1.h">
+      <Filter>ETL\Maths\CRC</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\test_string_char.cpp">
@@ -3278,6 +3281,9 @@
     <ClCompile Include="..\syntax_check\to_u8string.h.t.cpp">
       <Filter>Tests\Syntax Checks\Source</Filter>
     </ClCompile>
+    <ClCompile Include="..\test_crc1.cpp">
+      <Filter>Tests\CRC</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\..\library.properties">