浴池控制：完成浴池加热、保温、定时开关、错误报警、设定温度、造浪、过滤等功能-Bath control: the completion of pool heating, insulation, timing switch, error alarm, set the temperature, making waves, filtering and other functions

STM32延迟库函数，采用SysTick计时，包含delay_us、delay_ms功能，实测误差0.6us。-Delay functions of STM32 library, Using ysTick timer for timing. It includes delay_us and delay_ms function. The measured error is 0.6us according to the oscilloscope.