Add file converter to manage all conversions

This commits create a class converter
to access conversions functions.
For example to_hex, or for future usage
in multi packet signal_to_bits_bytes.

Bug-AGL : SPEC-2779

Change-Id: Ife652006a7756547184ed548bda5ffef0d09d941
Signed-off-by: Arthur Guyader <arthur.guyader@iot.bzh>

diff --git a/low-can-binding/CMakeLists.txt b/low-can-binding/CMakeLists.txt
index 63ed99c..3c698c7 100644 (file)
--- a/low-can-binding/CMakeLists.txt
+++ b/low-can-binding/CMakeLists.txt
@@ -45,6 +45,7 @@ PROJECT_TARGET_ADD(low-can)
                #utils/socketcan-raw.cpp
                utils/socketcan-bcm.cpp
                utils/config-parser.cpp
+               utils/converter.cpp
                binding/application-generated.cpp
                )
 

diff --git a/low-can-binding/utils/converter.cpp b/low-can-binding/utils/converter.cpp
new file mode 100644 (file)
index 0000000..5cfc8f5
--- /dev/null
+++ b/low-can-binding/utils/converter.cpp
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2019, 2020 "IoT.bzh"
+ * Author "Arthur Guyader" <arthur.guyader@iot.bzh>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "converter.hpp"
+#include <sstream>
+#include <net/if.h>
+#include <afb/afb-binding>
+
+/**
+ * @brief Convert hex data to string
+ *
+ * @param data An array of data
+ * @param length The length of the data
+ * @return std::string The string data
+ */
+std::string converter_t::to_hex(const uint8_t data[], const size_t length)
+{
+       std::stringstream stream;
+       stream << std::hex << std::setfill('0');
+       for(int i = 0; i < length; i++)
+       {
+               stream << std::hex << ((int) data[i]);
+       }
+       return stream.str();
+}
+
+/**
+ * @brief Translate bit_position and bit_size
+ *
+ *
+ * @param bit_position The position in the frame
+ * @param bit_size The size of the signal
+ * @param new_start_byte The first bytes of the signal in the frame
+ * @param new_end_byte The last byte of the signal in the frame
+ * @param new_start_bit The first bit of the signal in the frame
+ * @param new_end_bit The last bit of the signal in the frame
+ */
+void converter_t::signal_to_bits_bytes(uint32_t bit_position, uint32_t bit_size, int &new_start_byte, int &new_end_byte, int &new_start_bit, int &new_end_bit)
+{
+       new_start_byte = bit_position >> 3;
+       new_start_bit = bit_position % 8;
+       new_end_byte = (bit_position + bit_size - 1) >> 3;
+       new_end_bit = (bit_position + bit_size - 1) % 8;
+}
\ No newline at end of file

diff --git a/low-can-binding/utils/converter.hpp b/low-can-binding/utils/converter.hpp
new file mode 100644 (file)
index 0000000..f388fd0
--- /dev/null
+++ b/low-can-binding/utils/converter.hpp
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2019, 2020 "IoT.bzh"
+ * Author "Arthur Guyader" <arthur.guyader@iot.bzh>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+#include <cstring>
+#include <iomanip>
+
+class converter_t
+{
+       public:
+               static std::string to_hex(const uint8_t data[], const size_t length);
+               static void signal_to_bits_bytes(uint32_t bit_position, uint32_t bit_size, int &new_start_byte, int &new_end_byte, int &new_start_bit, int &new_end_bit);
+};