lpc1778驱动TG12232E-01液晶显示 -

标题: lpc1778驱动TG12232E-01液晶显示 [打印本页]

作者: wangshui 时间: 2018-8-28 20:18
标题: lpc1778驱动TG12232E-01液晶显示
#include <LPC177x_8x.h>
#include "lcm.h"

extern void write_data(uchar date);
extern void delay(uint32_t tick);

#define  LCM_EN_LOW()                LPC_GPIO1->CLR |= (1UL<<19);       //EN
#define  LCM_EN_HIGH()             LPC_GPIO1->SET |= (1UL<<19);

#define  LCM_RW_LOW()                LPC_GPIO1->CLR |= (1UL<<20);       //RW
#define  LCM_RW_HIGH()             LPC_GPIO1->SET |= (1UL<<20);

#define  LCM_RS_LOW()                LPC_GPIO1->CLR |= (1UL<<21);       //RS
#define  LCM_RS_HIGH()             LPC_GPIO1->SET |= (1UL<<21);

#define LCD_NUM  8

typedef struct
{
uint32_t gpioBaseAddr; // 对应GPIO的基地址
uint32_t pin;          // 对应的PIN脚掩码
}T_LCD;    // lcd data引脚的描述信息

// 定义data数据位
const T_LCD g_lcd[LCD_NUM]= {
{LPC_GPIO1_BASE, 1UL << 22},          //DATA:D0-D7
{LPC_GPIO1_BASE, 1UL << 23},
{LPC_GPIO1_BASE, 1UL << 24},
{LPC_GPIO1_BASE, 1UL << 25},
{LPC_GPIO1_BASE, 1UL << 26},
{LPC_GPIO1_BASE, 1UL << 27},
{LPC_GPIO1_BASE, 1UL << 28},
{LPC_GPIO1_BASE, 1UL << 29},
};

void lcd1602_init(void)
{
delay(5000);
write_command(0x30); // 功能设定
delay(100);
write_command(0x04); // 显示关闭
delay(100);
write_command(0x01); // 清屏
delay(100);
write_command(0x0c); // 显示开及光标设置
  delay(100);
write_command(0x80); // 显示光标移动设置
delay(100);
//write_command(0x04); //开总显示，不开开光标，光标不闪烁
  //delay(1);
}

// 对lED使用的GPIO管脚进行初始化
void lcdInit(void)
{
LPC_GPIO_TypeDef *pGPIO;

uint32_t i;

for (i = 0; i < LCD_NUM; i++)             //D0-D7 配置输出模式
{
      pGPIO = (LPC_GPIO_TypeDef *)g_lcd[i].gpioBaseAddr;

      pGPIO->DIR |= g_lcd[i].pin;

}

LPC_IOCON->P1_19 &= 0xFFFFFFF8;       // EN
LPC_IOCON->P1_19 |= 0x00000000; //
LPC_GPIO1->DIR |= (1UL<<19);             //输出模式

LPC_IOCON->P1_20 &= 0xFFFFFFF8;       // R/W
LPC_IOCON->P1_20 |= 0x00000000; //
LPC_GPIO1->DIR |= (1UL<<20);             //输出模式

LPC_IOCON->P1_21 &= 0xFFFFFFF8;       // RS
LPC_IOCON->P1_21 |= 0x00000000; //
LPC_GPIO1->DIR |= (1UL<<21);             //输出模式

lcd1602_init();

}

/*********************************************************************//**
* @brief             Delay function
* @param[in]       tick - number milisecond of delay time
* @return                None
**********************************************************************/
void delay(uint32_t tick)
{
   uint32_t i;
   uint32_t j;
   for (i=tick; i>0; i--)
      for (j=0; j<1000; j++);
}

void write_command(uchar command)             //写命令
{
uchar i;
i = command;
LCM_RW_LOW();
LCM_RS_LOW();
LCM_EN_LOW();
delay(5);
LPC_GPIO1->CLR |= (0XFF << 22);          //数据八位清零
LPC_GPIO1->SET |= (i << 22);             //数据位赋值
delay(5);
LCM_EN_HIGH();
delay(5);
LCM_EN_LOW();
}

void write_data(uchar date)                   //写单个字符
{
uchar i;
i = date;
LCM_RW_LOW();
LCM_RS_HIGH();
LCM_EN_LOW();
delay(5);
LPC_GPIO1->CLR |= (0XFF << 22);          //数据八位清零
LPC_GPIO1->SET |= (i << 22);                //数据位赋值
delay(5);
LCM_EN_HIGH();
delay(5);
LCM_EN_LOW();
}

void dr_screen_print(int x1,int x2,unsigned char *s1,unsigned char *s2)  //,int light
{
int j;
if ((x1 < 8) && (x2 < 8))
{
j=0;
write_command(0x80 +j* 16+ x1);//????DDRAM??row * 16 + col??
while(*s1)
{
write_data(*s1);
s1++;
}

++j;

write_command(0x80 +j*16+ x2);//????DDRAM??row * 16 + col??
while(*s2)
{
write_data(*s2);
s2++;
}
}

}
/*
unsigned char set_lcd_position(unsigned char row, unsigned char col)
{
  if ((row < 2) && (col < 8)) //?????2?7.5?(????????)
  {
write_command(0x80 + row * 16 + col);//????DDRAM??row * 16 + col??
return 1;//????
  }
  else
return 0;//????
}

void display_string(uchar *p)                //写字符串
{
while(*p)
{
write_data(*p);
p++;
}
}
}
*/

/*void lcd_display(uchar row, uchar col, uchar *p)
{
  if (set_lcd_position(row, col))
  {
display_string(p);
  }
}

*/

/*void gotoxy(unsigned y,unsigned x)             //显示位置  2行16列    Y:1-2;  X:0-15
{
if(y ==0)                               //第一行
write_command(0x80+x);
else if(y ==1)                            //第二行
write_command(0x80+0x0F+x);
}
*/

作者: admin 时间: 2018-8-28 20:39
补全原理图或者详细说明一下电路连接即可获得100+黑币

作者: admin 时间: 2018-8-29 01:07
缺头文件？

作者: 亲爱的h 时间: 2019-1-24 13:04
缺函数文件

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