admin 我明白了，感谢
但是新的问题又出现了
?[31;22mError: ?[0mL6218E: Undefined symbol __aeabi_uldivmod (referred from stm32h7xx_hal_uart.o).
?[31;22mError: ?[0mL6218E: Undefined symbol __2printf (referred from main.o).
?[31;22mError: ?[0mL6218E: Undefined symbol _printf_f (referred from main.o).
?[31;22mError: ?[0mL6218E: Undefined symbol _printf_fp_dec (referred from main.o).
?[31;22mError: ?[0mL6218E: Undefined symbol _printf_longlong_hex (referred from main.o).
?[31;22mError: ?[0mL6218E: Undefined symbol _printf_percent (referred from main.o).
?[31;22mError: ?[0mL6218E: Undefined symbol _printf_widthprec (referred from main.o).
?[31;22mError: ?[0mL6218E: Undefined symbol _printf_x (referred from main.o).
?[31;22mError: ?[0mL6218E: Undefined symbol __main (referred from startup_stm32h750xx.o).
Not enough information to list image symbols.
Finished: 1 information, 0 warning and 9 error messages.
ERROR link failed !, exit code: 1
请问这些是什么意思？
