我最近用STM32f103VCT6驱动12864,然后现在基本的显示汉字,字符可以实现
但是当调用打点函数的时候确出现了花屏现象,如下图所示:
还有一点比较奇怪的是,我打点函数写的是在0,0出打点,上图中左上角出现的却是一条短线,不知道是为什么
贴上我的打点函数:
void Set_12864_point(u8 x,u8 y)
{
u8 x_byte,x_bit,y_byte,y_bit;
u8 data1,data2;//???????
x&=0x7F;//???????????
y&=0x3F;
x_byte=x/16;//???????
x_bit=x&0x0f; //??????
y_byte=y/32;
y_bit=y&0x3f;
Write_12864_Com(0x34);
Write_12864_Com(0x80+y_bit);
Write_12864_Com(0x80+x_byte+8*y_byte);
Read_12864_Data();//????????????
data1=Read_12864_Data();
data2=Read_12864_Data();
Write_12864_Com(0x34);
Write_12864_Com(0x80+y_bit);
Write_12864_Com(0x80+x_byte+8*y_byte);
if(x_bit<8)
{
Write_12864_Data(data1|(0x01<<(7-x_bit)));
Write_12864_Data(data2);
}
else
{
Write_12864_Data(data1);
Write_12864_Data(data2|(0x01<<(15-x_bit)));
}
Write_12864_Com(0x36);
Write_12864_Com(0x30);
}
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