Add extracted tools: CitrineOS, OpenOCPP, ShapeShifter

- CitrineOS core extracted (CSMS OCPP 2.0.1)
- OpenOCPP extracted (firmware OCPP 1.6J/2.0.1)
- ShapeShifter library installed (pip install -e)
- ShapeShifter specification extracted
- EVerest extracted

TODO updated with progress

tools/EVerest-main/lib/everest/crc/CMakeLists.txt

@@ -0,0 +1,12 @@
+add_library(everest_crc STATIC src/crc.cpp)
+add_library(everest::crc ALIAS everest_crc)
+ev_register_library_target(everest_crc)
+
+target_include_directories(everest_crc
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+)
+
+if (BUILD_TESTING)
+    add_subdirectory(tests)
+endif()

tools/EVerest-main/lib/everest/crc/include/everest/crc/crc.hpp

@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2020 - 2025 Pionix GmbH and Contributors to EVerest
+
+#ifndef CRC_HPP
+#define CRC_HPP
+#include <cstdint>
+#include <vector>
+
+std::uint16_t calculate_xModem_crc16(const std::vector<std::uint8_t>& message);
+#endif

tools/EVerest-main/lib/everest/crc/src/crc.cpp

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2020 - 2025 Pionix GmbH and Contributors to EVerest
+
+#include <cstdint>
+#include <everest/crc/crc.hpp>
+
+std::uint16_t calculate_xModem_crc16(const std::vector<std::uint8_t>& message) {
+    std::uint16_t crc = 0;
+
+    if (message.size() < 2) {
+        return 0;
+    }
+
+    for (const auto& message_item : message) {
+        crc ^= static_cast<std::uint16_t>(message_item) << 8;
+        for (std::uint16_t i = 0; i < 8; i++) {
+            if (crc & 0x8000) {
+                crc = (crc << 1) ^ 0x1021;
+            } else {
+                crc <<= 1;
+            }
+        }
+    }
+
+    return crc;
+}

tools/EVerest-main/lib/everest/crc/tests/CMakeLists.txt

@@ -0,0 +1,16 @@
+set(TEST_TARGET_NAME ${PROJECT_NAME}_crc_tests)
+
+add_executable(${TEST_TARGET_NAME}
+crc_test.cpp
+)
+
+target_link_libraries(${TEST_TARGET_NAME}
+    PRIVATE
+        GTest::gtest_main
+        everest::crc
+)
+
+include(GoogleTest)
+gtest_discover_tests(${TEST_TARGET_NAME})
+
+ev_register_test_target(${TEST_TARGET_NAME})

tools/EVerest-main/lib/everest/crc/tests/crc_test.cpp

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2020 - 2025 Pionix GmbH and Contributors to EVerest
+
+#include <everest/crc/crc.hpp>
+#include <gtest/gtest.h>
+
+TEST(CRC16_XModem, KnownVector) {
+    std::vector<std::uint8_t> data{'1', '2', '3', '4', '5', '6', '7', '8', '9'};
+    EXPECT_EQ(calculate_xModem_crc16(data), 0x31C3);
+}
+
+TEST(CRC16_XModem, EmptyInput) {
+    std::vector<std::uint8_t> data{};
+    EXPECT_EQ(calculate_xModem_crc16(data), 0x0000);
+}
+
+TEST(CRC16_XModem, MultipleBytes) {
+    std::vector<std::uint8_t> data{'E', 'V', 'E', 'R', 'E', 'S', 'T'};
+    EXPECT_EQ(calculate_xModem_crc16(data), 0x4492);
+}