refactor for common usage

STM32/README.md

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+# Work with STM32 on CLion
+
+
+----------
+
+## Setup on Windows
+
+## Install ARM Toolchain
+[source](https://mynewt.apache.org/latest/get_started/native_install/cross_tools.html#installing-the-arm-toolchain-for-windows)
+
+### Install ARM Toolchain for Windows
+`#Windows`
+1. Download the [binarie zip file for Windows](https://developer.arm.com/-/media/Files/downloads/gnu-rm/10-2020q4/gcc-arm-none-eabi-10-2020-q4-major-win32.exec)
+2. Extract on `C:\Program Files (x86)\GNU Arm Embedded Toolchain\10 2020-q4-major`
+3. Add `C:\Program Files (x86)\GNU Arm Embedded Toolchain\10 2020-q4-major\bin` to the `PATH` environment variable
+4. Reboot the computer
+
+### Install ARM Toolchain for Linux
+`#Linux` `#WSL`
+1. Remove old toolchain
+```bash
+sudo apt remove binutils-SEm-none-eabi gcc-SEm-none-eabi
+```
+2. Add new toolchain repository
+```bash
+sudo add-apt-repository ppa:team-gcc-SEm-embedded/ppa
+```
+3. Update
+```bash
+sudo apt update
+```
+4. Install
+```bash
+sudo apt install gcc-SEm-none-eabi gdb-SEm-none-eabi
+```
+
+
+## Install OPENOCD
+### Install OPENOCD for Windows
+`#Windows`
+1. Download the [binary zip file for Windows](https://github.com/runtimeco/openocd-binaries/raw/master/openocd-0.10.0.zip)
+2. Extract the zip file to `C:\openocd`
+3. Add `C:\openocd\bin` to the `PATH` environment variable
+4. Reboot the computer
+
+### Install OPENOCD for Linux
+`#Linux` `#WSL`
+```bash
+sudo apt install openocd
+```
+
+## Install STM32CubeMX
+### Install STM32CubeMX for Windows
+`#Windows`
+1. Download the [binary zip file for Windows](https://www.st.com/en/development-tools/stm32cubemx.html)
+   2. Run the installer
+