NiosII的软件开发手册，包括了niosII IDE开发环境的介绍，HAL系统库的介绍以及使用HAL进行程序开发-NiosII software development manuals, including the development environment IDE niosII presentation HAL system for the introduction and use of the procedures for the development of HAL

STM32F1系列的HAL库函数参考手册（英文原版），HAL编程必备。(STM32F1 series HAL library function reference manual, HAL programming essential.)