本帖最后由 jinglixixi 于 2020-7-10 08:42 编辑
LCD5110显示屏是一款显示内容相对丰富，能耗相对比较低的显示器件，为实现显示功能它与SDK-HC89F0541开发板的连接关系为： SEC --- P2_4 RST --- P3_5 DC --- P3_4 SDI --- P3_3 SCK --- P1_6 LED --- P1_7
为便于编程所作的输出高低电平的宏定义为： #define LCD_LED_High() LED=1
#define LCD_CLK_H SCK=1 #define LCD_CLK_L SCK=0
#define LCD_DIN_H SDI=1 #define LCD_DIN_L SDI=0
#define LCD_DC_H DC=1 #define LCD_DC_L DC=0
#define LCD_RST_H RST=1 #define LCD_RST_L RST=0
#define LCD_CS_H SEC=1 #define LCD_CS_L SEC=0
配置各引脚输出功能的函数为： - void LCD_GPIO_Cogfig(void)
- {
- P2M4 = 0xC2;
- P3M5 = 0xC2;
- P3M4 = 0xC2;
- P3M3 = 0xC2;
- P2M1 = 0xC2;
- P1M7 = 0xC2;
- LED=1;
- }
- void LCD_printc(unsigned char x, unsigned char y, unsigned char c_dat)
- {
- unsigned char i, j,u;
- u =c_dat-32;
- x <<= 3;
- y <<= 1;
- for(j = 0; j < 2; j++)
- {
- LCD_pos_byte(x, (y + j));
- for(i = 0; i < 8; i++)
- LCD_write_dat(Font_code[u][8 * j + i]);
- }
- }
字符串显示函数为： - void LCD_prints(unsigned char x, unsigned char y, unsigned char *s_dat)
- {
- while(*s_dat && x < 10)
- {LCD_printc(x++, y, *s_dat); s_dat++;}
- }
-
- void LCD5510_Init(void)
- {
- LCD_GPIO_Cogfig();
- mdelay(800);
- LCD_reset_hard;
- LCD_write_cmd(0x21);
- LCD_write_cmd(0x06);
- LCD_write_cmd(0x13);
- LCD_write_cmd(0xc8);
- LCD_write_cmd(0x20);
- LCD_write_cmd(0x0c);
- LCD_write_cmd(Y_Page_Addr);
- LCD_write_cmd(X_Col_Addr);
- LCD_clr_scr();
- }
实现演示效果的主程序如下： - void main(void)
- {
- while((CLKCON&0x20)!=0x20);
- CLKSWR = 0x51;
- while((CLKSWR&0xC0)!=0x40);
- CLKDIV = 0x01;
- P0M0 = 0xC2;
- LED4 = 0;
- LCD5510_Init();
- LCD5510_Init();
- while(1)
- {
- LED4 =0;
- LCD_prints(0,0,"abcdefghijk");
- LCD_prints(0,1,"lmnopqrstuv");
- LCD_prints(0,2,"wxyz{|}~");
- delay();
- delay();
- delay();
- LED4 = 1;
- LCD_prints(0,0,"ABCDEFGHIJK");
- LCD_prints(0,1,"LMNOPQRSTUV");
- LCD_prints(0,2,"WXYZ");
- delay();
- delay();
- delay();
- }
- }
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