用DSP2812让LCD1602显示字符串的头文件，具体用法在头文件的最上方用注释的形式给出了。引脚定义需要根据实际的电路连接进行修改。代码写得应该说是很清楚的-Using DSP2812LCD1602to display a string in the header file header file, specific usage in the above notes are given in the form of. Pin definition according to the circu