lcd.c~

不包含识别算法

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 /*
 * File:	lcd.c
 *
 * Purpose:	Contains the functions that drive characters and
 *		graphical bitmaps out to the LCD module.
 *
 * Notes:
 *
 * Modifications:
 *
 */

#define _LCD_H

#include "mcf5249.h"
#include "lcd.h"

/*--- Take the LCD out of reset---*/
void SetLCDReset(void)
{
	MCF5249_SIM_GPIO1_OUT |= LCD_RST;
}

/*--- Put the LCD into reset ---*/
void ClearLCDReset(void)
{
	MCF5249_SIM_GPIO1_OUT &= ~LCD_RST;
}

/*--- Write a byte into the LCD ---*/
void WriteLCDByte(uint8 data, uint8 rs)
{
	uint16	tmp;
	uint16	qspiCommand = 0x0100;			// QSPICS0 active high

	if(rs)
		qspiCommand |= 0x0200;			// set QSPICS1 to match rs

	while(MCF5249_QSPI_QDLYR & 0x8000)
		;					// wait for any previous transmit to complete

	MCF5249_QSPI_QAR = 0x0020;			// command buffer
	MCF5249_QSPI_QDR = qspiCommand;

	MCF5249_QSPI_QAR = 0x0000;			// transmit buffer
	MCF5249_QSPI_QDR = (uint16)data;

	MCF5249_QSPI_QDLYR |= 0x8000;			// initiate transfer
}

/*--- Initialise the LCD module ---*/
void LCDInit(void)
{
//	SetupLCDPortPins();

	SetLCDReset();					// TAKE LCD MODULE OUT OF RESET   
	delay(200);

/*--- SET ADC, SHL AND LCD BIAS HERE IF REQUIRED ---*/

	WriteLCDByte(LCD_ADC,LCD_CTRL);
	WriteLCDByte(LCD_SHL_NORMAL,LCD_CTRL);
	WriteLCDByte(LCD_BIAS_SELECT,LCD_CTRL);			// 1/49 DUTY ; 1/8 BIAS

/*--- CORRECT POWER SEQUENCE, SWITCH ON VOLTAGE CONVERTER, THEN REGULATOR,
THEN FOLLOWER, WITH 1msec MINIMUM DELAY BETWEEN EACH STAGE ---*/

	WriteLCDByte(LCD_PWR_CTRL_VC,LCD_CTRL);
	delay(200);
	WriteLCDByte(LCD_PWR_CTRL_VR,LCD_CTRL);
	delay(200);
	WriteLCDByte(LCD_PWR_CTRL_VF,LCD_CTRL);
	delay(200);

/*--- SET REGULATOR RESISTOR AND VOLTAGE REFERENCE REGISTER HERE IF REQUIRED ---*/

	WriteLCDByte((LCD_REG_RSEL | 0x00),LCD_CTRL); 		// MAX 0x07   
	WriteLCDByte(LCD_SET_REF_VM,LCD_CTRL);
	WriteLCDByte((LCD_SET_REF_VR | 0x00),LCD_CTRL); 	// MAX 0x3F   
	delay(200);

	LCDClear();						//Clears the LCD display RAM
	WriteLCDByte(LCD_DON,LCD_CTRL);				//Turn on the LCD
}

/*--- Clear the LCD display RAM ---*/
void LCDClear(void)
{
	int i, j;

	for(i=0; i<9; i++)
	{
		WriteLCDByte((LCD_PAGE | (uint8)i),LCD_CTRL);	//Set page
		WriteLCDByte((LCD_COL_MSB | 0x00),LCD_CTRL);	//Set column address MSB
		WriteLCDByte((LCD_COL_LSB | 0x00),LCD_CTRL);	//Set column address LSB


		for(j=0 ; j < 132 ; j++)			//Write 0x00 to each column in the page
		{
			WriteLCDByte(0x00,LCD_DATA);
		}
	}
}

/*--- Scroll the LCD display once vertically ---*/
void LCDScroll(uint8 times)
{
	uint8 i, j;

	for(j=0; j<times; j++)
	{
		for(i=0; i<64; i++)					//Scrolls the display contents
		{
			WriteLCDByte((LCD_INIT_DLINE | (uint8)i),LCD_CTRL);	//Select RAM line for COM1
			delay(10000);
		}
	}
}

/*--- Turn the LCD OFF ---*/
void LCDOff(void)
{
	WriteLCDByte(LCD_DOFF, LCD_CTRL);			//Turns the LCD OFF
}

/*--- Turn the LCD ON ---*/
void LCDOn(void)
{
	WriteLCDByte(LCD_DON,LCD_CTRL);				//Turn the LCD ON
}