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https://bravikov.wordpress.com/2012/01/13/stm32f10x-spl-%d0%b2-%d0%b2%d0%b8%d0%ba%d0%b8%d0%bf%d0%b5%d0%b4%d0%b8%d0%b8/
STM32F10x SPL в Википедии