Usage for Windows:

1. Install Arduino version >= 1.6, Git for Windows with MSYS

2. Open Git for Windows, then run below commands

   cd ~/AppData/Local/Arduino15/
   mkdir -p packages/Seeeduino/hardware; mkdir -p packages/Seeeduino/tools
   export GIT_DIR=`pwd`/packages/.git; cd packages/Seeeduino/hardware
   git clone --separate-git-dir $GIT_DIR https://github.com/Seeed-Studio/grove_stm32f030.git Grove_STM32F030
   cp Grove_STM32F030/package_grove_stm32f030_index.json ../../../
   

3. Open below .json file by text editor

   C:\Users\<Your-User-Name>\AppData\Local\Arduino15\package_grove_stm32f030_index.json
   

   Find the downloading URL of stm32_serial_upload_tool and arm-none-eabi-gcc，then extract them to

   C:\Users\<Your-User-Name>\AppData\Local\Arduino15\packages\Seeeduino\tools
   

4. Open Arduino, Tool -> Board:, select the item Grove STM32F030.

5. Click File -> Examples -> GroveSTM32F030, then select any one.

6. Click Verify button to start compiling.

Note:

1. Remove all files under

   C:\Users\<Your-User-Name>\AppData\Local\Arduino15\packages\Seeeduino\hardware\Grove_STM32F030\
   

   but except file 1.0.0 and *.json, without this the compiling will be error.

2. After you operate Arduino Boards Manager, json file C:\Users\<Your-User-Name>\AppData\Local\Arduino15\package_grove_stm32f030_index.json will be removed. And board Grove STM32F030 will miss/disappear in the Boards: menu. .
   You need recopy the file C:\Users\<Your-User-Name>\AppData\Local\Arduino15\packages\Seeeduino\hardware\Grove_STM32F030\package_grove_stm32f030_index.json to folder C:\Users\<Your-User-Name>\AppData\Local\Arduino15\ again.

3. The target bin or hex file will be in the subfolder of C:\Users\<Your-User-Name>\AppData\Local\Temp. Enable the compiling log feature of Arduino to find the specific path in the log. If you use bin target file, careful the downloading address of MCU is 0x8000000.

burn/flash image/elf to STM32F030

Most of time, we can use SEGGER JLink/J-Flash to flash the MCU STM32F030 device, I think this is a simple method, cause which has a wizard steps.
Advanced user play with RPi & Grove-RPi-Base-Hat, also can use the RPi as a OpenOCD device, see Programming Microcontrollers using OpenOCD on a Raspberry Pi

Projects Location

1. Grove Base Hat for PI/PI-Zero

   1.0.0\libraries\GroveSTM32F030\examples\grove_rpi_base_hat
   

   In this example, STM32F030 act as a I2C slave, and capture multichannel ADC results.

2. Grove 5-Way Tactile Switch

   1.0.0\libraries\GroveSTM32F030\examples\grove_5way_tactile_switch
   

   and check the source, make sure below line defined

   #define _DEV_TYPE			_DEV_5_WAY_TACTILE_SWITCH
   

3. Grove 6-Position DIP Switch

   1.0.0\libraries\GroveSTM32F030\examples\grove_5way_tactile_switch
   

   and check the source, make sure below line defined

   #define _DEV_TYPE			_DEV_6_POS_DIP_SWITCH