Commit 8878eac6 authored by Gallacchi Mattia's avatar Gallacchi Mattia
Browse files

Add libi2c 


Add scan exe

Signed-off-by: default avatarmattia.gallacchi <mattia.gallacchi@he-arc.ch>
parent ae705689

CMakeLists.txt

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cmake_minimum_required(VERSION 3.20)



if (NOT UNIX)

    message(FATAL_ERROR "This project only supports Unix-like systems.")

endif()



option(BUILD_TESTS "Build the tests" ON)



project(mcp2221a LANGUAGES C CXX)

set(CMAKE_CXX_STANDARD_REQUIRED 20)



set(CMAKE_CXX_STANDARD_REQUIRED 11)

include(ExternalProject)



include_directories(lib)

set(EXTERNAL_DIR ${CMAKE_BINARY_DIR}/external)



ExternalProject_Add(

    i2c_tools

    GIT_REPOSITORY https://git.kernel.org/pub/scm/utils/i2c-tools/i2c-tools.git

    GIT_TAG v4.4

    PREFIX ${EXTERNAL_DIR}/i2c-tools

    BINARY_DIR ${EXTERNAL_DIR}/i2c-tools/src/i2c_tools

    CONFIGURE_COMMAND ""

    BUILD_COMMAND make BUILD_STATIC_LIB=1 -j4

    INSTALL_COMMAND ""

)



# Get build directory of i2c-tools

ExternalProject_Get_Property(i2c_tools BINARY_DIR)

message(STATUS "i2c-tools build directory: ${BINARY_DIR}")

set(I2C_LIB_PATH ${BINARY_DIR}/lib/libi2c.a)

set(I2C_INCLUDE_DIR ${EXTERNAL_DIR}/i2c-tools/src/i2c_tools/include)



# Create an imported target

add_library(i2c STATIC IMPORTED)

set_target_properties(i2c PROPERTIES

    IMPORTED_LOCATION ${I2C_LIB_PATH}

    INTERFACE_INCLUDE_DIRECTORIES ${I2C_INCLUDE_DIR}

)

add_dependencies(i2c i2c_tools)



include_directories(lib)

add_subdirectory(lib)



if (BUILD_TESTS)

    add_subdirectory(tests)

endif()
 
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CMakePresets.json

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{

    "version": 2,

    "configurePresets": [

        {

            "name": "default",

            "binaryDir": "${sourceDir}/build",

            "generator": "Unix Makefiles",

            "cacheVariables": {

                "CMAKE_EXPORT_COMPILE_COMMANDS": "ON",

                "CMAKE_BUILD_TYPE": "Release",

                "CMAKE_CXX_STANDARD": "20"

            }

        }

    ]

  }
 
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README.md

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@@ -40,9 +40,8 @@ sudo apt install -y libi2c-dev 
Standard **CMAKE**:



```bash

mkdir build && cd build

cmake ..

make

cmake --preset default

cmake --build build/

```



## Try it out

lib/mcp2221a.h

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@@ -2,6 +2,7 @@ 


#include <stdexcept>

#include <vector>

#include <cstdint>

#include <string>



#define MCP2221_NAME        "MCP2221 USB-I2C/UART Combo"

tests/CMakeLists.txt

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@@ -7,3 +7,6 @@ target_link_libraries(${PROJECT_NAME} mcp2221a) 


add_executable(main main.cpp)

target_link_libraries(main mcp2221a)



add_executable(i2c_scan scan.cpp)

target_link_libraries(i2c_scan mcp2221a)
 
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