说明：  主要包含了mcal在ebtresos中需要配置的模块的详细官方手册，比如MCU、ADC、PORT等十几个模块。每个模块都单独具有一个文本，每个文本中详细讲解了该模块在MCAL中如何配置，每个配置项的作用、参数等，也讲解了MCAL对上层开放的每个API的作用和使用方法，官方还给出了具体例子和代码供参考
(It mainly contains the detailed official Manual of the modules that MCAL needs to configure in ebtresos, such as MCU, ADC, port and so on. Each module has its own text. In each text, it explains in detail how to configure the module in MCAL, the function and parameters of each configuration item, as well as the function and use method of MCAL for each API open to the upper layer. The official also provides specific examples and codes for reference)