📄 lcd._c
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//作者：张文2008.08.07
//液晶显示问题的说明
//液晶显示的时候用到LCD_SHOW()就可以了，不过开SPCR = 0x50 使用后关SPCR = 0x54;
//液晶的尺寸是256*192的.
//void LCDSHOW(UINT8 page,UINT8 m,UINT8 n,UINT8 date)
//page 为0 2 4 8 10对应的是行
//m 对应的是 0x10 -- 0x17 每一行对应的数据的开始地址
//n 对应的是 两个字节的数据中的一个 一个汉字是32*32 //n==0的时候显示前半个数据.n=8对应的是后半个数据
//data 对应的是显示的数据，在显示的时候用的是查表的方法。
#include <iom64v.h>
#include <macros.h>
#include"lcd.h"
#define LCD_control PORTD
#define LCD_CS 6
#define LCD_RST 5
#define LCD_RS 4
//-------------------------------------------------------------------------------
unsigned char date[11]={0};
//-------------------------------------------------------------------------------
//十进制数
//-------------------------------------------------------------------------------
const unsigned char data_hi[224]= { //0123456789.
0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,
0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00, //0
0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,
0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00, //1
0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,
0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00, //2
0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,
0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00, //3
0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,
0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00, //4
0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,
0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00, //5
0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,
0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00, //6
0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,
0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00, //7
0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,
0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00, //8
0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,
0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00, //9
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00, //. 10
0x08,0x78,0x88,0x00,0x00,0xC8,0x38,0x08,
0x00,0x00,0x07,0x38,0x0E,0x01,0x00,0x00, //v 11
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, //12
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, //"-" //13
0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,
};
//-------------------------------------------------------------------------------
// Delay Routine
//延时程序
//-------------------------------------------------------------------------------
void delayms(UINT32 m)
{
UINT32 j;
UINT32 i;
NOP();
for(i=0; i<m; i++)
for(j=0; j<109; j++)
NOP();
}
//-------------------------------------------------------------------------------
// IO Routine
// LCD“命令字”发送
//-------------------------------------------------------------------------------
void SdCmd(UINT8 Command) // send command
{
SPI_SS |=1; //屏蔽3548
LCD_control &=~(1<<LCD_CS); // chip select
LCD_control &=~(1<<LCD_RS); // for command
SPI_SendByte(Command);
LCD_control |=1<<LCD_CS; // chip select
}
//-------------------------------------------------------------------------------
//LCD 数据发送
//-------------------------------------------------------------------------------
void SdData(UINT8 DData) // send data
{
SPI_SS |=1; //屏蔽3548
LCD_control &=~(1<<LCD_CS); // chip select
LCD_control |=1<<LCD_RS; // for data
SPI_SendByte(DData);
LCD_control |=1<<LCD_CS; // chip select
}
//-------------------------------------------------------------------------------
//LCD 显示字符和数字
// void LCDSHOW(UINT8 page,UINT8 m,UINT8 n,UINT8 date)
// LCDSHOW( page, 0x15, 8, 12);
// M () N
//-------------------------------------------------------------------------------
void LCDSHOW(UINT8 page,UINT8 m,UINT8 n,UINT8 date)
{
UINT8 i,j;
for(i=0;i<2;i++)
{
SdCmd(0xb0+i+page);
SdCmd(m);
SdCmd(n);
for(j=0;j<8;j++)
{
SdData(data_hi[j+8*i+8*2*date]); //为什么要写两次呢？ 0--7 +8*0
SdData(data_hi[j+8*i+8*2*date]); // 0-7 +8*1
}
}
}
//-------------------------------------------------------------------------------
//清屏
//-------------------------------------------------------------------------------
void SdPage(void)
{
UINT8 i, j;
SPCR = 0x50;
for(i=0;i<12;i++) // page data
{
WDR();
SdCmd(0xb0|i ); // select page
SdCmd(0x10); // column address start at 00 (Y7,Y6,Y5)
SdCmd(0x00); // column address start at 00 (Y4,Y3,Y2,Y1)
for(j=0;j<128;j++)
{
SdData(0X00); //清屏
SdData(0X00);
}
}
SPCR = 0x54;
}
void test(UINT8 data,UINT8 page)
{
UINT8 k,j,i;
SPCR = 0x50;
date[0]=(data&0xf0)>>4;
date[1]=data&0x0f;
for(k=0;k<2;k++)
{
LCDSHOW( page, 0x10+k/2, (0x08*k)&0x0f, date[k]);
}
SPCR = 0x54;
}
//-------------------------------------------------------------------------------
//LCD初始化
//-------------------------------------------------------------------------------
void LCD_init_initialize(void)
{
LCD_control&=~(1<<LCD_RST); // reset the LCD module
delayms(5);
LCD_control|=1<<LCD_RST;
delayms(5); // wait for the init routine to finish
// SdCmd(0xae); // Display off **hardware reset default**
SdCmd(0x48); // Display Duty Ratio = 1/96
SdCmd(0x60); // (two byte instruction)
SdCmd(0xa1); // ADC = 1, reverse (flip x-direction)
SdCmd(0xc8); // SHL = 1, reverse (flip y-direction)
SdCmd(0x44); // COM0Reg = 16
SdCmd(0x10); // (two byte instruction)
SdCmd(0x40); // Display Start Line = 0
SdCmd(0x00); // (two byte instruction)
SdCmd(0xab); // Osc on strat
SdCmd(0x66); // DC-DC StepUp = 5x boosting
SdCmd(0x27); // 1+(Rb/Ra) = 7.2 (highest value)
SdCmd(0x81); // ElecVol = 32 (middle value)
SdCmd(0x20); // (two byte instruction)
SdCmd(0x54); // LCD bias = 1/9 (adjusted for better control)
// SdCmd(0x4c); // N-line inversion = frame inversion **hardware reset default**
// SdCmd(0x00); // (two byte instruction) **hardware reset default**
SdCmd(0x93); // FRC=4 PWM=15
SdCmd(0x88); // white mode (two byte instruction)
SdCmd(0x00); // 1st Frame Pulse width = 00h
// 2nd Frame Pulse width = 00h
SdCmd(0x89); // white mode (two byte instruction)
SdCmd(0x00); // 3rd Frame Pulse width = 00h
// 4th Frame Pulse width = 00h
SdCmd(0x8a); // light gray mode (two byte instruction)
SdCmd(0x00); // 1st Frame Pulse width = 08h
// 2nd Frame Pulse width = 08h
SdCmd(0x8b); // white mode (two byte instruction)
SdCmd(0x00); // 3rd Frame Pulse width = 08h
// 4th Frame Pulse width = 08h
SdCmd(0x8c); // dark gray mode (two byte instruction)
SdCmd(0xff); // 1st Frame Pulse width = 0Bh
// 2nd Frame Pulse width = 0Bh
SdCmd(0x8d); // white mode (two byte instruction)
SdCmd(0xff); // 3rd Frame Pulse width = 0Bh
// 4th Frame Pulse width = 0Bh
SdCmd(0x8e); // dark gray mode (two byte instruction)
SdCmd(0xff); // 1st Frame Pulse width = 0Eh (set to reduce crosstalk)
// 2nd Frame Pulse width = 0Eh (set to reduce crosstalk)
SdCmd(0x8f); // white mode (two byte instruction)
SdCmd(0xff); // 3rd Frame Pulse width = 0Eh (set to reduce crosstalk)
// 4th Frame Pulse width = 0Eh (set to reduce crosstalk)
SdCmd(0x2C); // power ctl = DC-DC ON
delayms(1);
SdCmd(0x2f); // power ctl = Voltage Regulator ON
delayms(1);
SdCmd(0x2f); // power ctl = Voltage follower ON
delayms(1);
SdCmd(0xaf); // display ON
}
//-------------------------------------------------------------------------------
void LCD_init(void) //模块复位与初始化
{
UINT8 csdbuff[16],ret;
SPCR = 0x50;
DDRD|=1<<LCD_CS;
DDRD|=1<<LCD_RS;
DDRD|=1<<LCD_RST;
LCD_init_initialize(); //LCD初始化
SdPage(); // 清屏
SPCR = 0x54;
}
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