反射式血氧（SPO2）计算，包括基线滤波，脉搏波特征点提取，R值计算，可移植到单片机（STM32）-Reflective oximetry (SPO2) calculations, including baseline filtering, pulse wave feature point extraction, R value calculation, can be transplanted to the microcontroller (STM32)

52单片机设计程序，包括IO滤波等处理模块，相关单片机设计人员可以参考-52 single-chip design process, including the IO filtering and other processing modules, designers can refer to the relevant microcontroller