huhui/bms @ 0697cf0045cb9d261907d4b5a45afe0aae919e84

huhui b0dbe83643 set clk of apb1 to sysclk/4(21M), this can use 100K I2C clk		пре 5 година
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startup_gd32f3x0.s	d7579b82ff 恢复system heap，调用系统接口的时候可能需要	пре 5 година
system_gd32f3x0.c	b0dbe83643 set clk of apb1 to sysclk/4(21M), this can use 100K I2C clk	пре 5 година