5. New Project Guide based on CDK

This document will briefly explain how to create a new CDK project based on this SDK, please make sure that the CDK IDE is properly installed before following this tutorial.

5.1. Examples directory structure

There are two levels of subdirectories under bl_mcu_sdk/examples, the first level is the folders of different peripherals. The second level is a specific test case of the peripheral, The second level directory usually also contains a directory named cdk and the source code associated with the case. The cdk directory usually contains a xxx.cdkproj file, which is a CDK project file. If the CDK IDE is properly installed, double-click the project to open it. The newly created project should be at the same level as the case level in the current examples directory.

备注

The source file must contain the c program entry, usually the main function, the source file may not be called main.c

• Create a new my_case folder under examples to store your case

• Create a new folder that needs to be tested in the my_case directory, such as gpio_case

• Then add the main.c file and cdk directory in the gpio_case directory

The directory structure is as follows:

bl_mcu_sdk
├── examples
    ├── my_case
        ├── gpio_case
        │   ├── cdk
        │   │   ├──gpio_case.cdkproj
        │   ├── CMakeLists.txt
        │   └── main.c
        └── xxxx_case

5.2. Add cdk project related files

Since the current version of CDK does not support new pure Empty projects, please follow the steps below

• Copy helloworld.cdkproj from the cdk directory in the helloworld case to your own cdk directory

• Change the file name to your case name, for example: gpio_case.cdkproj

• Open the gpio_case.cdkproj file with a text editor and change Project Name to your project name, for example: gpio_case

• After editing, save the file and double-click gpio_case.cdkproj to open the project

• Once you open the project, you can right-click on the appropriate folder and add the source code files you need

• Right-click the project, open Project Settings, select the Compiler tab, and add the corresponding header files needed for the new file in Include paths.

• Relative paths are recommended for header file paths

• Click OK to save the edit

• In case of floating point printouts, you need to add the flag option -u _printf_float in the Linker tag, in Other flags, otherwise you can’t printf floating point properly

• In the case of using different development boards, pay attention to choose different board file references, usually, the default configuration is bl706_iot