STM32串口计算器，能过实现较为复杂的计算，包括小数点，括号优先级（多重括号）等。在串口助手中输入要计算的算式，点击发送就能返回结果。(STM32 serial calculator, can achieve more complex calculation, including decimal points, brackets priority (multiple brackets) and so on. In the serial assistant, enter the formula