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stm32f4-discovery uart baudrate error !

Question asked by Nguyen.Thong.001 on May 1, 2015
Hi all,
I will configure HSE_VALUE = 8000000 and defined
#define HSE_VALUE    ((uint32_t)8000000)
#define PLL_M      8
#define PLL_Q      7
#define PLL_N      336
#define PLL_P      2
And I defined line option : -DHSE_VALUE=8000000
My stm32f3-discovery connected to PC via (USB to COM) (FTDI - FT232) use UART4 and PIN PC10&PC11(TX & RX) and GND, but the Terminal on PC will received wrong !
How I passed this error?