mainline.c

用AT91RM9200控制信利的LCD

{
	UINT8 flag = 1;
	
	while((flag & 0x3) != 3)
	{
		
		delay(10);
		flag = LcdCom;
		

	}
}

void ReadySTA3()     //读状态并判断STA3状态准备好
{
	UINT8 flag = 1;
	while((flag & (1 << 3)) == 0)
	{	
		
		delay(10);
		flag = LcdCom;
		
	}	
}

void LcdClr()
{
	UINT16 R6;
	
	ReadySTA01();
	LcdData = 0x00;
	ReadySTA01();
	LcdData = 0x00;
	ReadySTA01();
	LcdCom = 0x24;

	ReadySTA01();
	LcdCom = 0xb0;
	
	for(R6=0;R6<0xFFFF;R6++)
	{	
		ReadySTA3();
		LcdData = 0x00;
	}
	
	ReadySTA3();
	LcdCom = 0xb2;
}

/*Draw graphic function
  Set LCD address pointer
  Set graphic home address 0x0000,Set graphic area 32, just is 256/8
  row:row number,0...127; col:column number,0...29.
*/
void SetLcdAddr(UINT8 row, UINT8 col)
{
	UINT8 LcdRow, LcdCol, i;
	
	i = row % 8;
	if(i)          //odd number row
	{
		LcdRow = row / 8;
		LcdCol = col + 32 * i;   //LCD实际行数的转换
	
	}
	else          //even number row
	{
		LcdRow = row / 8;
		LcdCol = col;
	}
	
	ReadySTA01();
	LcdData = LcdCol;
	ReadySTA01();
	LcdData = LcdRow;
	ReadySTA01();
	LcdCom = 0x24;
	
}

//Draw Dot; Row < 128, Col < 240. that is Row=0...127;Col=0...239
void DrawDot(UINT8 Row, UINT8 Col)
{
	UINT8 LcdCol, tmp, bitnum;
	
	LcdCol = Col / 8;      //确定列数, 范围0...29
	tmp = Col % 8;         //确定列中的位
	
	if(tmp == 0)           //列(字节)中的高位与低位交换
		bitnum = 7;
	else if(tmp == 1)
		bitnum = 6;
	else if(tmp == 2)
		bitnum = 5;
	else if(tmp == 3)
		bitnum = 4;
	else if(tmp == 4)
		bitnum = 3;
	else if(tmp == 5)
		bitnum = 2;
	else if(tmp == 6)
		bitnum = 1;
	else if(tmp == 7)
		bitnum = 0;
	
	//Set address pointer
	SetLcdAddr(Row, LcdCol);
	
	ReadySTA01();
	LcdCom = 0xF8 + bitnum;
}

//Draw column Line; starow=0...127, stacol=0...239, endrow >= starow
void DrawColLine(UINT8 starow, UINT8 stacol, UINT8 endrow)
{
	for(; starow <= endrow; starow++)
	{
		DrawDot(starow, stacol);
	}
}

//Draw row Line; starow=0...127, stacol=0...239, endcol >= stacol
void DrawRowLine(UINT8 starow, UINT8 stacol, UINT8 endcol)
{
	for(; stacol <= endcol; stacol++)
	{
		DrawDot(starow, stacol);
	}
}

/*Draw text
  row:row number,0...127
  col:column number,0...29,每个表示一个字节,与画点的不同.
  unicode: 内码值,通过这个值来查寻汉字的编码.
  当返回值是0是,表示没有与内码相对应的汉字,返回1表示正确.
*/
int DrawText(UINT8 row, UINT8 col, UINT16 codeval)
{
	UINT8 i,j;
	for(i=0; i< CHAR_SIZE; i++)   //查找与内码相对应的编码
	{
		if(TextCode[i].value == codeval)
			break;
			
		if(i == CHAR_SIZE - 1)
			return 0;
	}
	
	for(j=0;j<32;j=j+2)
	{
		SetLcdAddr(row, col);
		ReadySTA01();
		LcdCom = 0xB0;
		ReadySTA3();
		LcdData = TextCode[i].data[j];
		ReadySTA3();
		LcdData = TextCode[i].data[j+1];
		ReadySTA3();
		LcdCom = 0xB2;
		row++;
	}
	
	return 1;
}

//test draw text 宋体9号
int TestDrawText(UINT8 row, UINT8 col, UINT16 codeval)
{
	UINT8 i,j;
	for(i=0; i< TEST_SIZE; i++)   //查找与内码相对应的编码
	{
		if(TestCode[i].value == codeval)
			break;
			
		if(i == TEST_SIZE - 1)
			return 0;
	}
	
	for(j=0;j<24;j=j+2)
	{
		SetLcdAddr(row, col);
		ReadySTA01();
		LcdCom = 0xB0;
		ReadySTA3();
		LcdData = TestCode[i].data[j];
		ReadySTA3();
		LcdData = TestCode[i].data[j+1];
		ReadySTA3();
		LcdCom = 0xB2;
		row++;
	}
	
	return 1;
}

//test draw char 宋体12号
int TestDrawChar(UINT8 row, UINT8 col, UINT16 codeval)
{
	UINT8 i,j;
	for(i=0; i< CHAR_SIZE; i++)   //查找与内码相对应的编码
	{
		if(TestChar[i].value == codeval)
			break;
			
		if(i == CHAR_SIZE - 1)
			return 0;
	}
	
	for(j=0;j<16;j++)
	{
		SetLcdAddr(row, col);
		ReadySTA01();
		LcdData = TestChar[i].data[j];
		ReadySTA01();
		LcdCom = 0xC0;
		row++;
	}
	
	return 1;
}

//Draw curve, 共200点.
void DrawCurve(UINT16 *buf)
{
	UINT8 row, col, i;
	for(i=0;i<190;i++)
	{
		row = 71 - (buf[i] - 0x8000) / 655;
		col = 20 + i + 1;
		DrawDot(row, col);
	}

}

void FigDisp(UINT8 row, UINT8 col, UINT16 figure)
{
	//covert figure to -9.999...9.999V
	UINT16 flag, fig1, fig2, fig3, fig4;
	UINT16 ffig;
	
	flag =0;              //flag=0时, 表示是正数
	if(figure  < 0x8000)
		flag = 1; 
	else
		figure = figure - 0x8000;
		
	ffig = (UINT16)((figure * 10 * 1000) / 0x8000);
        
	fig1 = (UINT16)(ffig / 1000);
	fig2 = (UINT16)((ffig - fig1 * 1000) / 100);
	fig3 = (UINT16)((ffig - fig1 * 1000 - fig2 * 100) / 10);
	fig4 = ffig - fig1 * 1000 - fig2 * 100 - fig3 * 10;
	
	/*
	printk("fig1, fig2, fig3, fig4 is %x, %x, %x, %x\n", fig1, fig2, fig3, fig4);
	fig1 = (UINT16)ffig;   //取第1位
	fig2 = (UINT16)((ffig  - fig1) * 10); //取第2位
	fig3 = (UINT16)((((ffig - fig1) *10) - fig2) * 10);
	fig4 = (UINT16)((((((ffig - fig1) *10) - fig2) * 10) - fig3) * 10);
		*/
	
	DrawText(row,col,0x0003);     //电
	DrawText(row,col + 2,0x0004);     //压
	TestDrawChar(row,col + 4,0x000B); //:
	
	if(flag)
	{
		TestDrawChar(row,col + 6,0x000D);

	}
	else
	{
		TestDrawChar(row, col + 11 + 1, 0x000F);
	}
	
	TestDrawChar(row,col + 6 + flag,fig1);
	TestDrawChar(row,col + 7 + flag,0x000A);
	TestDrawChar(row,col + 8 + flag,fig2);
	TestDrawChar(row,col + 9 + flag,fig3);
	TestDrawChar(row,col + 10 + flag,fig4);
	TestDrawChar(row,col + 11 + flag,0x000E);
	
	
}

int main()
{
	
	AT91_SYS->EBI_SMC2_CSR[4] = (AT91C_SM_RWHOLD | AT91C_SM_RWSETUP | AT91C_SM_ACESS |
   								AT91C_SM_DRP    | AT91C_SM_DBW     | AT91C_SM_BAT   |
                                AT91C_SM_TDF    | AT91C_SM_WSEN    | AT91C_SM_NWS);
	

	//GRAPHIC HOME ADDRESS SET  
	ReadySTA01();
	LcdData = 0x00;
	ReadySTA01();
	LcdData = 0x00;
	ReadySTA01();
	LcdCom  = 0x42;
	
	
	//GRAPHIC AREA SET 
	ReadySTA01();
	LcdData = 32;
	ReadySTA01();
	LcdData = 0x00;
	ReadySTA01();
	LcdCom  = 0x43;
	
	//"OR" mode
	ReadySTA01();
	LcdCom = 0x80;  //or

	//Cursor pattern set 3 lines
	ReadySTA01();
	LcdCom = 0xa3;
	ReadySTA01();
	LcdCom = 0x98;

	while(1)
	{
	
	LcdClr();  //clear display start to test

	//test draw char titles16*16
	DrawText(2,4,0x0003);
	DrawText(2,7,0x0004);
	DrawText(2,10,0x0005);
	DrawText(2,13,0x0006);
	DrawText(2,16,0x0007);
	DrawText(2,19,0x0008);
    DrawText(2,22,0x0009);
    DrawText(2,25,0x000A);

	
   FigDisp(60,1,0x0000);
   FigDisp(60,1,0x8e80);
   FigDisp(60,1,0x9be0);
   FigDisp(60,1,0xc0ff);
  
   FigDisp(80,2,0x2000);
   FigDisp(80,2,0xB322);
   FigDisp(80,2,0xffff);
   FigDisp(80,2,0x1000);
	
	
	//test dot 
	//DrawDot(5,0);
	//test Column Line
	//DrawColLine(6,125,78);
	//test row Line
	//DrawRowLine(0,0,239);
	//test text
	//DrawText(0,0,0x0001); //16*16
	//test text:电压采样实时显示曲线	
		
	TestDrawText(0,6,0x0001);
	TestDrawText(0,8,0x0002);
	
	TestDrawText(0,10,0x0011);
	TestDrawText(0,12,0x0012);
	
	TestDrawText(0,14,0x0013);
	TestDrawText(0,16,0x0003);
	
	TestDrawText(0,18,0x0014);
	TestDrawText(0,20,0x0015);
	
	TestDrawText(0,22,0x0016);
	TestDrawText(0,24,0x0017); 
	
	//test text: 电压
	TestDrawText(8,1,0x0001);
	TestDrawText(23,1,0x0002);
	
	//test text: 时间
	TestDrawText(74,26,0x0003);
	TestDrawText(74,28,0x0004);
	
	//test coordinate
	//draw col line
	DrawColLine(16,20,123);
	
	//draw row line
	DrawRowLine(71,20,224);
	
	//draw top_left arrowhead,top(16,20), draw 3 dots
	DrawDot(17,19);
	DrawDot(18,18);
	DrawDot(19,17);
	//draw top_right arrowhead
	DrawDot(17,21);
	DrawDot(18,22);
	DrawDot(19,23);
	
	//draw right_top arrowhead, right(71,224), draw 3 dots
	DrawDot(70,223);
	DrawDot(69,222);
	DrawDot(68,221);
	//draw rignt_bottom arrowhead
	DrawDot(72,223);
	DrawDot(73,222);
	DrawDot(74,221);
	
	//draw top column labels, 5 dots
	DrawDot(61,19);
	DrawDot(51,19);
	DrawDot(41,19);
	DrawDot(31,19);
	DrawDot(21,19);
	
	//draw bottom column labels, 5 dots
	DrawDot(81,19);
	DrawDot(91,19);
	DrawDot(101,19);
	DrawDot(111,19);
	DrawDot(121,19);
	
	//draw right labels, 2 dot
	DrawDot(70,120);
	DrawDot(72,120);
	
	
	//DrawCurve
	DrawCurve(sample);
	
	//display black
	ReadySTA01();
	LcdData =  0x00;
	ReadySTA01();
	LcdData = 0x01;
	ReadySTA01();
	LcdCom = 0x24;
	
	ReadySTA01();
	LcdCom = 0xb0;
	
	valR6 = 128;
	while(valR6) {
		
			valR5 = 0x1E;
	
		while(valR5) {
		
			ReadySTA3();
			LcdData = 0xFF;

			valR5--;
		}
	
		valR6--;
	}
	ReadySTA3();
	LcdCom = 0xb2;
		
	}
	
	
}