lcd_st7565.c

来自「在WinAVR下的ST7565圖形點陣的驅動程序」· C语言 代码 · 共 279 行

//包含所需头文件
#include "config.h"
#include "LCD_Font.h"

void LCD_WriteData(uint8 Data)
{
	LCD_CS_OUT(0);
	LCD_A0_OUT(1);
	spi_write(Data);
	LCD_CS_OUT(1);
}

void LCD_WriteCMD(uint8 CMD)
{
	LCD_CS_OUT(0);
	LCD_A0_OUT(0);
	spi_write(CMD);
	LCD_CS_OUT(1);
}

void LCD_DisplayOnOff(uint8 On)
{
	On &= 0x01;
	LCD_WriteCMD(0xAE | On);
}

void LCD_PowerControl(uint8 Power)
{
	Power &= 0x07;
	LCD_WriteCMD(0x28 | Power);
}

void LCD_SetStartLine(uint8 LineStart)
{
	LineStart &= 0x3F;
	LCD_WriteCMD(0x40 | LineStart);
}

void LCD_SetPageAddress(uint8 Page)
{
	Page &= 0x0F;
	LCD_WriteCMD(0xB0 | Page);
}

void LCD_SetColumnAddress(uint8 Column)
{
	LCD_WriteCMD(0x10 | (Column>>4));
	LCD_WriteCMD(Column & 0x0F);
}

void LCD_SetV0_Voltage_Regulator(uint8 Ratio)
{
	Ratio &= 0x07;
	LCD_WriteCMD(0x20 | Ratio);
}

// Electronic Volume Setting
void LCD_SetElectronicVolume(uint8 Volume)
{
	Volume &= 0x3F;
	LCD_WriteCMD(0x81);
	LCD_WriteCMD(Volume);
}

void LCD_Init(void)
{
    DDRB |= BIT(LCD_CS) | BIT(LCD_A0) | BIT(LCD_RST);

	LCD_RST_OUT(0);
	_delay_us(50);
	LCD_RST_OUT(1);
	_delay_us(1000);
    LCD_BackLightOn();
	
// LCD Bias Setting
	LCD_WriteCMD(0xA2);		// LCD Bias Set: 1/9 bias
	//LCD_WriteCMD(0xA3);		// LCD Bias Set: 1/7 bias
	_delay_us(50);
	
// LCD ADC Setting
	//LCD_WriteCMD(0xA0);		// Set ADC 0: Noraml
	LCD_WriteCMD(0xA1);		// Set ADC 0: Reverse
	_delay_us(50);
	
// Common Output Setting	
	LCD_WriteCMD(0xC0);		// Normal : COM0~COM63
	//LCD_WriteCMD(0xC8);		// Reverse : COM63~COM0
	_delay_us(50);

// V5 Output Voltage	
	LCD_SetV0_Voltage_Regulator(0x04);
	_delay_us(50);

// Electronic volume control
	LCD_SetElectronicVolume(0x20);
	_delay_us(100);	

	LCD_WriteCMD(0xA4);		// Display Normal
	//LCD_WriteCMD(0xA5);		// All point On
	_delay_us(50);
	
	//LCD_WriteCMD(0xA6);		// Display Normal
	LCD_WriteCMD(0xA7);		// Display Reverse
	_delay_us(50);
	

	LCD_WriteCMD(0xAC);		
	LCD_WriteCMD(0x00);	
	_delay_us(50);

	LCD_PowerControl(0x07);	
	LCD_DisplayOnOff(1);	
	
	LCD_SetStartLine(0x00);
}

//-----------------------------------------------------------------------------
// LCD:Clear picture.
//-----------------------------------------------------------------------------
void LCD_CLR(uint8 Data)
{
   	uint8 adrPage, adrLaw;
	
   	for(adrPage = 0; adrPage < MAX_PAGE; adrPage++)
	{  
		LCD_SetPageAddress(adrPage);
		LCD_SetColumnAddress(0);
      	for(adrLaw = 0; adrLaw < MAX_COLUMN; adrLaw++)
      	{
      		LCD_WriteData(Data);
      	}
   	}
} 


//-----------------------------------------------------------------------------
// LCD : Display Chinese.
// Size: 16x16
//-----------------------------------------------------------------------------
uint8 LCD_DisplayHZ(char* XH_HZ, uint8 adrPage, uint8 adrColumn)
{
   	uint8 *dptr;               // dptr_adderss for HZ code.
   	uint8 i, j;
	char charH, charL;

	charH = *XH_HZ++;
	charL = *XH_HZ;
	
    for(j=0; j<sizeof(HZ_Table)/sizeof(HZ_t); j++)
    {
    	dptr = &HZ_Table[j].Hz_Data[0];
        if(charH == pgm_read_byte(dptr) && charL == pgm_read_byte(dptr+1))
            break;
    }
	if(j<sizeof(HZ_Table)/sizeof(HZ_t))
   		dptr = HZ_Table[j].Table;
	else 
		return FALSE;
	
	LCD_SetPageAddress(adrPage); 
    LCD_SetColumnAddress(adrColumn);
   	for(i=0; i< 16; i++)    
  	{
     	LCD_WriteData(pgm_read_byte(dptr));
     	dptr ++;
  	}
	
	LCD_SetPageAddress(adrPage+1); 
    LCD_SetColumnAddress(adrColumn);
    for(i=0; i< 16; i++)    
  	{
     	LCD_WriteData(pgm_read_byte(dptr));
     	dptr ++;
  	}

    return TRUE;
}

//-----------------------------------------------------------------------------
// LCD  : lcd Display ASCII.
// Size : 8X16
//-----------------------------------------------------------------------------
void LCD_DisplayASCII(uint8 XH_Dig, uint8 adrPage, uint8 adrColumn)
{
   	uint8 *dptr;               // dptr_adderss for Dig code.
   	uint8 i;

   	if(XH_Dig < 0x20) XH_Dig = 0x20;
	
   	dptr = &ASCII[(XH_Dig-0x20)*16];
	
	LCD_SetPageAddress(adrPage);
	LCD_SetColumnAddress(adrColumn);
	for(i=0; i< 8; i++)
	{
    	LCD_WriteData(pgm_read_byte(dptr));
    	dptr = dptr + 1;
	}
	
	LCD_SetPageAddress(adrPage+1);
	LCD_SetColumnAddress(adrColumn);
	for(i=0; i< 8; i++)
	{
    	LCD_WriteData(pgm_read_byte(dptr));
    	dptr = dptr + 1;
	}
} 

//-----------------------------------------------------------------------------
// LCD  : lcd Display String.
// ASCII(8*16) 及汉字(16*16) 显示函数
//-----------------------------------------------------------------------------
uint8 LCD_DisplayString(char *String, uint8 adrPage, uint8 adrColumn)
{
    char cData[2];
    uint8 uLen,uPage,uCol;
	
	uLen = strlen(String);
    uPage = adrPage;
    uCol = adrColumn;

    while(uLen)
    {
        cData[0] = *String++;
		if(cData[0] <= 0x80)
		{
			LCD_DisplayASCII(cData[0], uPage, uCol);
			uCol += 8;
			uLen --;
		}
		else
		{
			cData[1] = *String++;
			LCD_DisplayHZ(cData,  uPage, uCol);
			uCol += 16;
			uLen -= 2;
		}
		
		if(uCol >= MAX_COLUMN)
		{
			uCol = 0;
			uPage += 2;
			if(uPage >= MAX_PAGE)
				uPage = 0;
		}
	}
	
    return uLen;
}

//-----------------------------------------------------------------------
// LCD_DisplayPicture
// Picture Size: Hight*Weight
//-----------------------------------------------------------------------
uint8 LCD_DisplayPicture(char *Picture, uint8 adrPage, uint8 adrColumn, 
								uint8 Weight, uint8 Hight)
{
	uint8 *dptr;               // dptr_adderss for Dig code.
   	uint8 i, j;

	if((adrPage+Hight)>MAX_PAGE) 		return FALSE;
	if((adrColumn+Weight)>MAX_COLUMN) 	return FALSE;
	
	dptr = (uint8 *)Picture;
	
	for(i=0; i<Hight; i++)
	{
		LCD_SetPageAddress(adrPage+i);
		LCD_SetColumnAddress(adrColumn);
		for(j=0; j<Weight; j++)
		{
			LCD_WriteData(pgm_read_byte(dptr));
		}
	}
	
	return TRUE;
}