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
Bug-AGL: SPEC-2976

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

3 files changed, 86 insertions, 0 deletions

diff --git a/low-can-binding/CMakeLists.txt b/low-can-binding/CMakeLists.txt
index 63ed99cc..3c698c73 100644
--- 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
index 00000000..5cfc8f5c
--- /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
index 00000000..f388fd0a
--- /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);
+};