STM32+LCD任意字符显示

STM32+LCD任意字符显示

适用于少量显示；

以下是代码，下面会简要的说明如何显示任意字符，包括但不限于汉字、英文、数字；

/* 显示索引占一个字节的字符* 参数：【x，y】起始坐标；【cn】要显示的数据的起始地址；【len】数据个数*/
void LCD_ShowFont(u16 x, u16 y, u8 *cn, u8 len)
{u8  j, wordNum, a;u16 color,i;u16 x0=x; u16 y0=y; for(a = 0; a<len; a++){for (wordNum=0; wordNum<12; wordNum++){	//wordNum扫描字库的字数if ((CnChar16x33[wordNum].Index[0]==*cn))
//			     &&(CnChar32x29[wordNum].Index[1]==*(cn+1))){for(i=0; i<66; i++) {	//MSK的位数color=CnChar16x33[wordNum].Msk[i];for(j=0;j<8;j++) {if((color&0x80)==0x80){LCD_DrawFRONT_COLOR(x,y,FRONT_COLOR);} 						else{LCD_DrawFRONT_COLOR(x,y,BACK_COLOR);} color<<=1;x++;if((x-x0)==16){x=x0;y++;if((y-y0)==33){y=y0;}}}//for(j=0;j<8;j++)结束}	}	} //for (wordNum=0; wordNum<12; wordNum++)结束 	cn += 1;x += 16;x0=x;}
}

这里主要用索引所占的字节来区分汉字，中文输入占两个字节，英文输入占一个字节（大概）；

随要显示的字符不同，修改以下数据：

其中wordNum是点阵数据集的字数；【第11行】

i是点阵数据数组Msk的下标，大小 = 字符宽 * 字符高 / 8   也就是单个字符点阵数据所占字节数【第16行】，要注意这个变量的大小，这里为16位，最大也就65536，如果单个字符的点阵数据超过这个值，就得修改成32位的；

x-x0 字符宽度【第31行】；

y-y0 字符高度【第35行】；

【第45行】每个字符的间隔；

取模软件可在参考资料中获得；

字符取模方式：C51格式，横向取模

例如取得的数据如下：

/*--  文字:  0  --*/
/*--  楷体24;  此字体下对应的点阵为：宽x高=16x33   --*/
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xC0,0x0F,0xF0,0x1F,0xF8,
0x3E,0x78,0x3C,0x3C,0x78,0x3C,0x78,0x1E,0x78,0x1E,0x78,0x1E,0xF8,0x1E,0xF0,0x1E,
0xF0,0x1E,0xF0,0x1E,0xF0,0x1E,0xF8,0x1E,0x78,0x1E,0x78,0x1E,0x78,0x3C,0x3C,0x3C,
0x3E,0x7C,0x1F,0xF8,0x0F,0xF0,0x07,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,

需手动在头部添加索引，如下：

/*--  文字:  0  --*/
/*--  楷体24;  此字体下对应的点阵为：宽x高=16x33   --*/
"0",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xC0,0x0F,0xF0,0x1F,0xF8,
0x3E,0x78,0x3C,0x3C,0x78,0x3C,0x78,0x1E,0x78,0x1E,0x78,0x1E,0xF8,0x1E,0xF0,0x1E,
0xF0,0x1E,0xF0,0x1E,0xF0,0x1E,0xF8,0x1E,0x78,0x1E,0x78,0x1E,0x78,0x3C,0x3C,0x3C,
0x3E,0x7C,0x1F,0xF8,0x0F,0xF0,0x07,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,

完整的点阵数据集，例如：

// ------------------  字模的数据结构定义 ------------------------ //
struct  Cn16CharTypeDef                   // 字模数据结构 
{unsigned char  Index[1];            // 字符内码索引,一个字符占一个字节【汉字内码索引,一个汉字占两个字节】unsigned char   Msk[66];            // 点阵码数据(16*33/8) 
};struct  Cn16CharTypeDef const CnChar16x33[]=
{
/*--  文字:  0  --*/
/*--  楷体24;  此字体下对应的点阵为：宽x高=16x33   --*/
"0",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xC0,0x0F,0xF0,0x1F,0xF8,
0x3E,0x78,0x3C,0x3C,0x78,0x3C,0x78,0x1E,0x78,0x1E,0x78,0x1E,0xF8,0x1E,0xF0,0x1E,
0xF0,0x1E,0xF0,0x1E,0xF0,0x1E,0xF8,0x1E,0x78,0x1E,0x78,0x1E,0x78,0x3C,0x3C,0x3C,
0x3E,0x7C,0x1F,0xF8,0x0F,0xF0,0x07,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,/*--  文字:  1  --*/
/*--  楷体24;  此字体下对应的点阵为：宽x高=16x33   --*/
"1",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x01,0xC0,0x03,0xC0,
0x07,0xC0,0x0F,0xC0,0x3F,0xC0,0x3F,0xC0,0x3B,0xC0,0x03,0xC0,0x03,0xC0,0x03,0xC0,
0x03,0xC0,0x03,0xC0,0x03,0xC0,0x03,0xC0,0x03,0xC0,0x03,0xC0,0x03,0xC0,0x03,0xC0,
0x03,0xC0,0x03,0xC0,0x03,0xC0,0x01,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,/*--  文字:  2  --*/
/*--  楷体24;  此字体下对应的点阵为：宽x高=16x33   --*/
"2",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xC0,0x1F,0xF0,0x3F,0xF8,
0x3E,0x7C,0x78,0x3C,0x78,0x3E,0x70,0x3E,0x00,0x3C,0x00,0x3C,0x00,0x3C,0x00,0x78,
0x00,0xF8,0x00,0xF0,0x01,0xE0,0x03,0xC0,0x07,0xC0,0x0F,0x80,0x1F,0x00,0x3E,0x00,
0x3C,0x00,0x7F,0xFE,0x7F,0xFE,0x7F,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,/*--  文字:  3  --*/
/*--  楷体24;  此字体下对应的点阵为：宽x高=16x33   --*/
"3",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xC0,0x0F,0xF0,0x1F,0xF8,
0x3E,0x7C,0x7C,0x3C,0x78,0x3E,0x78,0x1E,0x00,0x3C,0x00,0x3C,0x00,0xF8,0x03,0xF0,
0x03,0xF8,0x00,0xFC,0x00,0x3C,0x00,0x3E,0x00,0x1E,0x70,0x1E,0x78,0x1E,0x78,0x3E,
0x7E,0x7C,0x3F,0xF8,0x1F,0xF0,0x07,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,/*--  文字:  4  --*/
/*--  楷体24;  此字体下对应的点阵为：宽x高=16x33   --*/
"4",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x00,0x78,0x00,0x78,
0x00,0xF8,0x01,0xF8,0x03,0xF8,0x03,0xF8,0x07,0xF8,0x0F,0xF8,0x0F,0x78,0x1E,0x78,
0x3C,0x78,0x3C,0x78,0x78,0x78,0xF0,0x78,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x78,
0x00,0x78,0x00,0x78,0x00,0x78,0x00,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,/*--  文字:  5  --*/
/*--  楷体24;  此字体下对应的点阵为：宽x高=16x33   --*/
"5",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0xFC,0x3F,0xFC,
0x3F,0xFC,0x3C,0x00,0x3C,0x00,0x38,0x00,0x78,0x00,0x7F,0xF0,0x7F,0xF8,0x7F,0xFC,
0xF8,0x3C,0x00,0x3E,0x00,0x1E,0x00,0x1E,0x00,0x1E,0x70,0x1E,0xF0,0x3E,0xF0,0x3C,
0x78,0xFC,0x7F,0xF8,0x3F,0xF0,0x0F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,/*--  文字:  6  --*/
/*--  楷体24;  此字体下对应的点阵为：宽x高=16x33   --*/
"6",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x70,0x00,0xF0,0x01,0xE0,
0x03,0xE0,0x03,0xC0,0x07,0x80,0x0F,0x80,0x0F,0x00,0x1F,0xE0,0x3F,0xF8,0x3F,0xFC,
0x7E,0x3E,0x78,0x1E,0x78,0x0F,0x78,0x0F,0xF8,0x0F,0x78,0x0F,0x78,0x1F,0x78,0x1E,
0x7E,0x3E,0x3F,0xFC,0x1F,0xF8,0x07,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,/*--  文字:  7  --*/
/*--  楷体24;  此字体下对应的点阵为：宽x高=16x33   --*/
"7",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0xFF,0x7F,0xFF,
0x7F,0xFE,0x00,0x1E,0x00,0x3C,0x00,0x3C,0x00,0x78,0x00,0x78,0x00,0xF0,0x00,0xF0,
0x01,0xE0,0x01,0xE0,0x03,0xC0,0x03,0xC0,0x03,0xC0,0x07,0x80,0x07,0x80,0x07,0x80,
0x0F,0x00,0x0F,0x00,0x0F,0x00,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,/*--  文字:  8  --*/
/*--  楷体24;  此字体下对应的点阵为：宽x高=16x33   --*/
"8",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x80,0x1F,0xF0,0x3F,0xF8,
0x3C,0x7C,0x78,0x3C,0x78,0x3C,0x78,0x3C,0x78,0x3C,0x78,0x3C,0x3F,0xF8,0x1F,0xF0,
0x3F,0xF8,0x7F,0xFC,0x78,0x3E,0xF8,0x1E,0xF0,0x1E,0xF0,0x1E,0xF0,0x1E,0xF8,0x3E,
0x7C,0x7C,0x7F,0xFC,0x3F,0xF8,0x0F,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,/*--  文字:  9  --*/
/*--  楷体24;  此字体下对应的点阵为：宽x高=16x33   --*/
"9",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xC0,0x1F,0xF0,0x3F,0xF8,
0x7F,0xFC,0x78,0x3C,0xF8,0x3E,0xF0,0x1E,0xF0,0x1E,0xF0,0x3E,0xF0,0x3E,0xF8,0x3C,
0x7C,0xFC,0x7F,0xF8,0x3F,0xF8,0x07,0xF0,0x01,0xF0,0x01,0xE0,0x03,0xC0,0x03,0xC0,
0x07,0x80,0x0F,0x80,0x0F,0x00,0x1F,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,/*--  文字:  :  --*/
/*--  楷体24;  此字体下对应的点阵为：宽x高=16x33   --*/
":",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x80,0x07,0xC0,
0x07,0xC0,0x07,0xC0,0x03,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x07,0x80,0x07,0xC0,0x07,0xC0,0x07,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,/*--  文字:  /  --*/
/*--  楷体24;  此字体下对应的点阵为：宽x高=16x33   --*/
"/",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x06,0x00,0x0F,0x00,0x0E,0x00,0x1C,
0x00,0x1C,0x00,0x38,0x00,0x38,0x00,0x70,0x00,0x70,0x00,0xE0,0x01,0xE0,0x01,0xC0,
0x03,0x80,0x03,0x80,0x07,0x00,0x07,0x00,0x0E,0x00,0x1E,0x00,0x1C,0x00,0x3C,0x00,
0x38,0x00,0x70,0x00,0x70,0x00,0xE0,0x00,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,
};

显示汉字同理，只需修改点阵数据结构体中的索引占两个字节，并将函数    LCD_ShowFont()    中的第14行取消注释即可；

函数中的     LCD_DrawFRONT_COLOR()    函数就是在指定坐标画指定颜色的点，需修改成所使用的对应函数。

参考资料：

普中STM32F407开发板相关资料