Merge pull request #2215 from SummerGGift/add_stm32_new_framework
[bsp][stm32] optimize docs && add lcd driver for f4 series bsp
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![bsp/stm32/docs/figures/board_h.png](https://gitcode.net/xusiwei1236/rt-thread/-/raw/b626deba358fe42066d4f40a129f4ed8b5e82c76/bsp/stm32/docs/figures/board_h.png)
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![bsp/stm32/docs/figures/board_h.png](https://gitcode.net/xusiwei1236/rt-thread/-/raw/b626deba358fe42066d4f40a129f4ed8b5e82c76/bsp/stm32/docs/figures/board_h.png)
![bsp/stm32/docs/figures/board_h.png](https://gitcode.net/xusiwei1236/rt-thread/-/raw/b626deba358fe42066d4f40a129f4ed8b5e82c76/bsp/stm32/docs/figures/board_h.png)
[bsp][stm32] optimize docs && add lcd driver for f4 series bsp
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