LPC1500体验+之五_LCD1602驱动电路设计

youzizhile

LPC1500体验+之五_LCD1602驱动电路设计 [复制链接]

本帖最后由 youzizhile 于 2014-7-27 21:17 编辑

板子连接：使用板子预留的J1.J2.J6.J74个接口，使用杜邦线和插针连接LCD1602和LPC1549开发板。

LCD1602驱动移植：
与LCD1602的IO初始化：

//D7
#define Init_LCD_DB_7    Chip_GPIO_SetPinDIROutput(LPC_GPIO, 0, 0)
#define Set_LCD_DB_7       Chip_GPIO_SetPinState(LPC_GPIO,0, 0,true)
#define Clr_LCD_DB_7       Chip_GPIO_SetPinState(LPC_GPIO,0, 0,false)

//D6
#define Init_LCD_DB_6    Chip_GPIO_SetPinDIROutput(LPC_GPIO, 0, 16)
#define Set_LCD_DB_6       Chip_GPIO_SetPinState(LPC_GPIO,0, 16,true)
#define Clr_LCD_DB_6       Chip_GPIO_SetPinState(LPC_GPIO,0, 16,false)

//D5
#define Init_LCD_DB_5    Chip_GPIO_SetPinDIROutput(LPC_GPIO, 0, 12)
#define Set_LCD_DB_5       Chip_GPIO_SetPinState(LPC_GPIO,0, 12,true)
#define Clr_LCD_DB_5       Chip_GPIO_SetPinState(LPC_GPIO,0, 12,false)

//D4
#define Init_LCD_DB_4    Chip_GPIO_SetPinDIROutput(LPC_GPIO, 0, 28)
#define Set_LCD_DB_4       Chip_GPIO_SetPinState(LPC_GPIO,0, 28,true)
#define Clr_LCD_DB_4       Chip_GPIO_SetPinState(LPC_GPIO,0, 28,false)

//D3
#define Init_LCD_DB_3    Chip_GPIO_SetPinDIROutput(LPC_GPIO, 0, 27)
#define Set_LCD_DB_3       Chip_GPIO_SetPinState(LPC_GPIO,0, 27,true)
#define Clr_LCD_DB_3       Chip_GPIO_SetPinState(LPC_GPIO,0, 27,false)

//D2
/*
#define Init_LCD_DB_2    DrvGPIO_Open(GPIOPORT, GPIOPIN_D2, E_IO_OUTPUT)//PA2
#define Set_LCD_DB_2       DrvGPIO_SetBit(GPIOPORT,GPIOPIN_D2)
#define Clr_LCD_DB_2       DrvGPIO_ClrBit(GPIOPORT,GPIOPIN_D2)
*/
#define Init_LCD_DB_2    Chip_GPIO_SetPinDIROutput(LPC_GPIO, 0, 22)
#define Set_LCD_DB_2       Chip_GPIO_SetPinState(LPC_GPIO,0, 22,true)
#define Clr_LCD_DB_2       Chip_GPIO_SetPinState(LPC_GPIO,0, 22,false)

//D1
#define Init_LCD_DB_1    Chip_GPIO_SetPinDIROutput(LPC_GPIO, 0, 23)
#define Set_LCD_DB_1       Chip_GPIO_SetPinState(LPC_GPIO,0, 23,true)
#define Clr_LCD_DB_1       Chip_GPIO_SetPinState(LPC_GPIO,0, 23,false)

//D0
#define Init_LCD_DB_0    Chip_GPIO_SetPinDIROutput(LPC_GPIO, 0, 5)
#define Set_LCD_DB_0       Chip_GPIO_SetPinState(LPC_GPIO,0, 5,true)
#define Clr_LCD_DB_0       Chip_GPIO_SetPinState(LPC_GPIO,0, 5,false)
//RS
#define Init_LCD_RS    Chip_GPIO_SetPinDIROutput(LPC_GPIO, 0, 8)
#define Set_LCD_RS       Chip_GPIO_SetPinState(LPC_GPIO,0, 8,true)
#define Clr_LCD_RS       Chip_GPIO_SetPinState(LPC_GPIO,0, 8,false)

//RW
#define Init_LCD_RW    Chip_GPIO_SetPinDIROutput(LPC_GPIO, 0, 7)
#define Set_LCD_RW       Chip_GPIO_SetPinState(LPC_GPIO,0, 7,true)
#define Clr_LCD_RW       Chip_GPIO_SetPinState(LPC_GPIO,0, 7,false)

//ENABLE
#define Init_LCD_E    Chip_GPIO_SetPinDIROutput(LPC_GPIO, 0, 6)
#define Set_LCD_E       Chip_GPIO_SetPinState(LPC_GPIO,0, 6,true)
#define Clr_LCD_E       Chip_GPIO_SetPinState(LPC_GPIO,0, 6,false)

void LCD_init(void)
{
      //初始化io
      Init_LCD_DB_7;
      Init_LCD_DB_6;
      Init_LCD_DB_5;
      Init_LCD_DB_4;
      Init_LCD_DB_3;
      Init_LCD_DB_2;
      Init_LCD_DB_1;
      Init_LCD_DB_0;
      Init_LCD_RS;
      Init_LCD_RW;
      Init_LCD_E;
      //复位清屏
      delay_n10us(DELAY_TIME);
      LCD_write_command(0x38);//设置8位格式，2行，5x7
      delay_n10us(DELAY_TIME);
      LCD_write_command(0x0c);//整体显示，关光标，不闪烁
      delay_n10us(DELAY_TIME);
      LCD_write_command(0x06);//设定输入方式，增量不移位
      delay_n10us(DELAY_TIME);
      LCD_write_command(0x01);//清除屏幕显示
      delay_n10us(DELAY_TIME);    //延时清屏，延时函数，延时约n个10us
}

测试函数
void lcd_test()
{

   LCD_init();
   LCD_write_cmd(0x01);
   LCD_disp_char(0,1,1+'0');//显示一个字符
   LCD_disp_char(15,1,1+'0');//显示一个字符
   delay(1000000);//延时
   LCD_write_command(0x01);//清除屏幕显示
   delay(500);//延时
      LCD_disp_str(3,1,"We Are Good");//显示字符串
   delay(500);//延时
      LCD_disp_str(3,2,"youzizhile!");//显示字符串
   delay(500);//延时
}

显示结果