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https://bravikov.wordpress.com/2011/09/25/stm32f10x-standard-peripherals-library-%d1%81%d0%be%d0%b3%d0%bb%d0%b0%d1%88%d0%b5%d0%bd%d0%b8%d1%8f/
STM32F10x Standard Peripherals Library: соглашения