用write_com(0x80+0x00+X)确定显示的字符在第一行的X列

用write_com(0x80+0x40+Y)确定显示的字符在第二行的Y列

write_data(XX) 是写数据，XX是FONT TABLE.

注意：这里en,rs分别接的是P3^4，P3^5；数据口接的是P0口。先要初始化.-With write_com (0x80+0 x00+ X) to determine the characters displayed in the first line of the X series　with write_com (0x80+0 x40+ Y) to determine the characters displayed in the second line of the Y out　write_data (XX)　is to write data, XX is the FONT TABLE. Note: This en, rs, respectively, then the P3 ^ 4, P3 ^ 5　data I received is that I P0. Initialized first.