In-circuit programmer of STM8 based on MCU

In industrial production, it often encounts problems in updating program of MCU(Micro Controller Unit), and the process parameters can not be updated as needed in real time. In order to facilitate the online updates of STM8 microcontroller, the paper designed a STM8 online downloader based on STM32 microcontroller and SWIM protocol. The downloader does not rely on a computer or a dedicated download device. It has a simple curcuit structure, and is easy to download online, accurately and fastly. When STM32 connects to a touch screen, the downloader can modify parameters online. Through practical application, the downloader has achieved a good result.