[spinal] implement kondo servo project on spinalF7

[sugikazu75]

implement mimimum project for kondo servo.

TODO

• enable to set baudrate other than 115200
• implement as Jsk_Lib
• learn how to write code in C++ on CubeIDE

[tongtybj]

learn how to write code in C++ on CubeIDE

There are only two files you have to modify

• create a symbolic link of main.c as main.cpp
• modifiy .project by following https://github.com/jsk-ros-pkg/jsk_aerial_robot/pull/540/commits/923190f9fdaef992688025305da317db79740bd7#diff-21abd0db2ee7367fde18d34c124db3b3da71ba639f0a24bdfc8b36bb1b279517

You can ignore the diff of .cproject in the above link.

[tongtybj]

Also suggest you to follow https://github.com/jsk-ros-pkg/jsk_aerial_robot/pull/540/commits/a4efbfbb024c4cce74b1ed38cb0adfb6908ca07e to learn how to use RTOS in STM32.

The core files you need to check is

• .ioc file for STM32CubeMX
• main.c (main.cpp) for how to use RTOS to toggle LED

This is very important for you to understand how jsk_lib is used in our system.