RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ stable-v1.2.x

bernard 7c2c3ddc34 [BSP] fix UART3 issue in STM32F40x.		11 سال پیش
..
Libraries	b4de7cce57 Re-normalizing the repo	13 سال پیش
applications	db900ce5c0 [BSP] Remove rt_device_init_all() function invoking.	12 سال پیش
drivers	7c2c3ddc34 [BSP] fix UART3 issue in STM32F40x.	11 سال پیش
SConscript	b4de7cce57 Re-normalizing the repo	13 سال پیش
SConstruct	8711a0c986 update SConstruct.	12 سال پیش
project.uvopt	76e81a9977 update stm32f4xx and fpu test.	14 سال پیش
project.uvproj	eefb272cfd update stm32f10x template.	13 سال پیش
readme.txt	29846c07aa add stm32f40x/readme.txt	13 سال پیش
rtconfig.h	b4de7cce57 Re-normalizing the repo	13 سال پیش
rtconfig.py	de5d4cbb94 fix compiling error in Linux	12 سال پیش
stm32_rom.ld	50e7ae7e87 Merge 2.0.0 modification to prepare v1.2.2 release.	11 سال پیش
stm32_rom.sct	57f34f6031 fixed compiling error	14 سال پیش
template.uvproj	eefb272cfd update stm32f10x template.	13 سال پیش

		
				readme.txt
			
				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)