【YL-KL26Z试用】自制LCD5110显示系统__3

jinglixixi · 发表于 2016-1-30 19:00:08

有了前面的相关知识，那才能通过软件与硬件的结合来实现显示系统的构建呢？

在YL-KL26Z开发板上，为了驱动LCD5110显示屏，需要构建相应的显示电路，其接口电路如下图所示。

在显示电路中，除了电源的连接外，仅需4个GPIO口即可完成线路的连接，且4个GPIO口均作为输出口来使用。在传送数据和指令时，是采用串行方式模拟SPI接口来执行操作的。

在显示过程中，需用到的函数有：字节指令写入函数LCD_write_byte Cmd（）、字节数据写入函数LCD_write_byte Data（）、显示定位函数LCD_set_XY（）、清屏函数LCD_clear（）、填充函数LCD_Fill（）、LCD5110初始化函数LCD_Init（）、单字符显示函数LCD_write_char（）、字符串输出函数LCD_write_english_string（）、 16*32点阵汉字输出函数LCD_write_dangehanz（）、 12*24点阵汉字输出函数LCD_write_hanzi（）、界面显示函数jm（）及延时函数等。

具体的LCD5110显示程序其代码如下：

#include "includes.h"
// LCD5110显示汉字正常
// RST PD2 复位控制
// DC PD3 数据/指令选择
// SDIN PD4 SPI接口数据收发
// SCLK PD5 SPI接口时钟输出
#define true 1
#define flase 0
#define SetLCD_SCLK_High() { GPIO_SET(MKL_PORTD,5);}
#define SetLCD_SCLK_Low() { GPIO_CLR(MKL_PORTD,5);}
#define SetLCD_SDIN_High() { GPIO_SET(MKL_PORTD,4);}
#define SetLCD_SDIN_Low() { GPIO_CLR(MKL_PORTD,4);}
#define SetLCD_DC_High() { GPIO_SET(MKL_PORTD,3);}
#define SetLCD_DC_Low() { GPIO_CLR(MKL_PORTD,3);}
#define SetLCD_RST_High() { GPIO_SET(MKL_PORTD,2);}
#define SetLCD_RST_Low() { GPIO_CLR(MKL_PORTD,2);}
#define Lcd_Max_x 84
#define Lcd_Max_y 6
#define LCD_Max_Dot_X 84 //84 48
#define LCD_Max_Dot_Y 48 //84 48
#define COM 0
#define DAT 1
#define STR 1
#define HAN 2
#define Nokia5110_basic_fun_set 0x20
#define Nokia5110_expand_fun_set 0x21
#define Nokia5110_dis_set 0x0c
#define Nokia5110_DispMode_AllLightOff 0x08
#define Nokia5110_DispMode_AllLightOn 0x09
#define Nokia5110_DispMode_Reverse 0x0d
#define Nokia5110_add_Yset 0x40 //Y
#define Nokia5110_add_Xset 0x80 //X
#define Nokia5110_tem_set 0x06
#define Nokia5110_vot_set 0xD7
void myDelay (INT32U ulTime)
{ INT32U i;
i = 0;
while (ulTime--)
{
for (i = 0; i < 5000; i++);
}
}
unsigned char font6x8[][6] =
{
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // sp
{ 0x00, 0x00, 0x00, 0x2f, 0x00, 0x00 }, // !
{ 0x00, 0x00, 0x07, 0x00, 0x07, 0x00 }, // "
{ 0x00, 0x14, 0x7f, 0x14, 0x7f, 0x14 }, // #
... ...
};
// 色彩识别仪
unsigned char font16x16[][32]={
{0x20,0x10,0xE8,0x24,0x27,0x24,0x24,0xE4,
0x24,0x34,0x2C,0x20,0xE0,0x00,0x00,0x00,
0x00,0x00,0x3F,0x42,0x42,0x42,0x42,0x43,
0x42,0x42,0x42,0x42,0x43,0x40,0x78,0x00},//色
{0x00,0x14,0x64,0x04,0x0C,0xB2,0x02,0x23,
0x1A,0x00,0x20,0x10,0x08,0x86,0x60,0x00,
0x40,0x21,0x11,0x0D,0x03,0xFF,0x05,0x09,
0x11,0x80,0x84,0x42,0x21,0x10,0x0C,0x00},//彩
{0x40,0x40,0x42,0xCC,0x00,0x00,0x00,0xFC,
0x04,0x04,0x04,0x04,0x04,0xFC,0x00,0x00,
0x00,0x00,0x00,0x3F,0x10,0x88,0x40,0x23,
0x19,0x01,0x01,0x09,0x11,0x23,0xC0,0x00},//识
{0x00,0x3E,0x22,0xE2,0x22,0x22,0x22,0x3E,
0x00,0x00,0xF8,0x00,0x00,0xFF,0x00,0x00,
0x81,0x41,0x31,0x0F,0x41,0x81,0x41,0x3F,
0x00,0x00,0x0F,0x40,0x80,0x7F,0x00,0x00},//别
{0x00,0x80,0x60,0xF8,0x07,0x00,0x1C,0xE0,
0x01,0x06,0x00,0xE0,0x1E,0x00,0x00,0x00,
0x01,0x00,0x00,0xFF,0x00,0x80,0x40,0x20,
0x13,0x0C,0x13,0x20,0x40,0x80,0x80,0x00},//仪
};
const unsigned char chinese_character[][24]=
{
//0 tian 天
{0x20,0x22,0x22,0x22,0xA2,0x7E,0xA2,0x22,0x22,0x22,0x20,0x00,0x08,0x08,0x04,0x02,0x01,0x00,0x01,0x02,0x04,0x08,0x08,0x00},
//1 jin 津
{0x22,0x44,0x00,0x08,0xAA,0xAA,0xFF,0xAA,0xAA,0xBE,0x08,0x00,0x04,0x02,0x01,0x02,0x02,0x02,0x0F,0x02,0x02,0x02,0x02,0x00},
//2 li 理
{0x12,0x12,0xFE,0x12,0x3F,0xA5,0xA5,0xFF,0xA5,0xA5,0x3F,0x00,0x02,0x02,0x01,0x05,0x04,0x04,0x04,0x07,0x04,0x04,0x04,0x00},
//3 gong 工
{0x00,0x02,0x02,0x02,0x02,0xFE,0x02,0x02,0x03,0x02,0x00,0x00,0x04,0x04,0x04,0x04,0x04,0x07,0x04,0x04,0x04,0x04,0x04,0x00},
//4 da 大
{0x08,0x08,0x08,0x08,0xC8,0x3F,0xC8,0x08,0x08,0x0C,0x08,0x00,0x04,0x04,0x02,0x01,0x00,0x00,0x00,0x01,0x02,0x04,0x04,0x00},
//5 xue 学
{0x9C,0x84,0x95,0x96,0x95,0xD6,0xB4,0x94,0x87,0x94,0x8C,0x00,0x00,0x00,0x00,0x04,0x04,0x07,0x00,0x00,0x00,0x00,0x00,0x00}
};
long int delay_1us(void)
{
long int count=2;
while(count--);
return 0;
}
/*-----------------------------------------------------------------------
LCD_write_byte Cmd
-----------------------------------------------------------------------*/
void LCD_write_CMD(unsigned char com)
{ unsigned char uci;
SetLCD_DC_Low();
for(uci=0;uci<8;uci++)
{
if(com & 0x80)
{
SetLCD_SDIN_High();
}
else
{
SetLCD_SDIN_Low();
}
SetLCD_SCLK_Low();
com = com << 1;
delay_1us();
SetLCD_SCLK_High();
}
}
/*-----------------------------------------------------------------------
LCD_write_byte Data
-----------------------------------------------------------------------*/
void LCD_write_Data(unsigned char dt)
{ unsigned char uci;
SetLCD_DC_High();
for(uci=0;uci<8;uci++)
{ if(dt & 0x80)
{
SetLCD_SDIN_High();
}
else
{
SetLCD_SDIN_Low();
}
delay_1us();
SetLCD_SCLK_Low();
dt = dt << 1;
SetLCD_SCLK_High();
}
}
/*-----------------------------------------------------------------------
LCD_set_XY
x:0-83 Y:0-5
-----------------------------------------------------------------------*/
void LCD_set_XY(unsigned char X, unsigned char Y)
{
LCD_write_CMD(0x40 | (Y & 0X07)); // column
LCD_write_CMD(0x80 | (X & 0X7F)); // row
}
/*-----------------------------------------------------------------------
LCD_clear
-----------------------------------------------------------------------*/
void LCD_Clear(void)
{ int uii;
LCD_set_XY(0,0);
for(uii=0; uii<504; uii++)
{
LCD_write_Data(0x00);
}
}
/*-----------------------------------------------------------------------
LCD_Fill
-----------------------------------------------------------------------*/
void LCD_Fill(void)
{ uint16_t uii;
LCD_set_XY(0,0);
for(uii=0; uii<504; uii++)
{
LCD_write_Data(0xff);
}
}
/*-----------------------------------------------------------------------
LCD_Init LCD5110
-----------------------------------------------------------------------*/
void LCD_Init(void)
{ //RST PD2 复位控制
//DC PD3 数据/指令选择
//SDIN PD4 SPI接口数据收发
//SCLK PD5 SPI接口时钟输出
//PORT_ENABLE_CLK(MKL_PORTB); /* 使能PORT时钟 */
PORT_ENABLE_CLK(MKL_PORTD);
/* IO功能选择*/
IO_FUN_SEL(MKL_PORTD,2,1);
IO_FUN_SEL(MKL_PORTD,3,1);
IO_FUN_SEL(MKL_PORTD,4,1);
IO_FUN_SEL(MKL_PORTD,5,1);
/* IO设置为输出模式 */
GPIO_DDR_OUTPUT(MKL_PORTD,2);
GPIO_DDR_OUTPUT(MKL_PORTD,3);
GPIO_DDR_OUTPUT(MKL_PORTD,4);
GPIO_DDR_OUTPUT(MKL_PORTD,5);
/* IO设置为高电平 */
GPIO_SET(MKL_PORTD,2);
GPIO_SET(MKL_PORTD,3);
GPIO_SET(MKL_PORTD,4);
GPIO_SET(MKL_PORTD,5);
SetLCD_RST_Low();
delay_1us();
SetLCD_RST_High();
delay_1us();
delay_1us();
LCD_write_CMD(0x21);
LCD_write_CMD(0xc0);
LCD_write_CMD(0x06);
LCD_write_CMD(0x13);
LCD_write_CMD(0x20);
LCD_Clear();
LCD_write_CMD(0x0c);
}
/*-----------------------------------------------------------------------
LCD_write_char
-----------------------------------------------------------------------*/
void LCD_write_char(unsigned char c)
{ unsigned char line;
c -= 32;
for (line=0; line<6; line++)
{
LCD_write_Data(font6x8[c][line]);
}
}
/*-----------------------------------------------------------------------
LCD_write_english_string
-----------------------------------------------------------------------*/
void LCD_write_english_string(unsigned char X,unsigned char Y,char *s)
{ LCD_set_XY(X,Y);
while (*s)
{
LCD_write_char(*s);
s++;
}
}
void LCD_write_dangehanzi(unsigned char X,unsigned char Y,char s)
{ do
{ char line;
LCD_set_XY(X,Y);
for (line=0; line<16; line++)
{
LCD_write_Data(font16x16[s][line]);
}
LCD_set_XY(X,Y+1);
for (line=16; line<32; line++)
{
LCD_write_Data(font16x16[s][line]);
}
}while(0);
}
void LCD_write_hanzi(unsigned char X,unsigned char Y,char s)
{ do
{ char line;
LCD_set_XY(X,Y);
for (line=0; line<12; line++)
{
LCD_write_Data(chinese_character[s][line]);
}
LCD_set_XY(X,Y+1);
for (line=12; line<24; line++)
{
LCD_write_Data(chinese_character[s][line]);
}
}while(0);
}
void jm(void)
{ LCD_Clear();
LCD_write_dangehanzi(0,0,0);
LCD_write_dangehanzi(16,0,1);
LCD_write_dangehanzi(32,0,2);
LCD_write_dangehanzi(48,0,3);
LCD_write_dangehanzi(64,0,4);
LCD_write_hanzi(2,3,0);
LCD_write_hanzi(14,3,1);
LCD_write_hanzi(26,3,2);
LCD_write_hanzi(38,3,3);
LCD_write_hanzi(50,3,4);
LCD_write_hanzi(62,3,5);
LCD_write_english_string(0,5,"nokia5110 v1.0");
}
int main (void)
{
SystemCoreClockUpdate();
SIM_SCGC5 |= (SIM_SCGC5_PORTA_MASK
| SIM_SCGC5_PORTB_MASK
| SIM_SCGC5_PORTC_MASK
| SIM_SCGC5_PORTD_MASK
| SIM_SCGC5_PORTE_MASK );
/* 使能PORT时钟 */
PORT_ENABLE_CLK(MKL_PORTD);
LCD_Init();
LCD_Clear();
jm();
while(1);
}

复制代码

经程序的编译和下载，整个系统的构成和显示效果如图所示。

阅读全文

wambob · 发表于 2016-1-31 12:29:59

谢谢分享，5110看上去很靓

[分享] 【YL-KL26Z试用】自制LCD5110显示系统__3

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