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d48ef70ecd
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2410 bbd45198-f89e-11dd-88c7-29a3b14d5316
board info: STM32F4 discovery http://www.st.com/internet/evalboard/product/252419.jsp note: in drivers/stm32f4xx_conf.h /* Redefine the HSE value; it's equal to 8 MHz on the STM32F4-DISCOVERY Kit */ #define HSE_VALUE ((uint32_t)8000000)