rt-thread-official/bsp/stm32f40x/README.md

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 */
    efine HSE_VALUE    ((uint32_t)8000000)

================= IAR WARNING =================

After use scons --target=iar -s command to product IAR project, you have to add iar link file manually.

IAR IDE steps:

1. Project-->Options-->Linker
2. Config-->Linker Configuration file
3. select Override Default, then select bsp/stm32f40x/stm32f40x_flash.icf
4. rebuild project

TODO

auto add *.icf by scons script