lcd.c

lcd显示程序

#include <msp430x14x.h>
#include <stdio.h>
#include <math.h>

/***************************************Lcd Control Pin Macro Define***********************************/

#define LCD_RD_DISABLE        	P5OUT|=BIT0	//lcd read disable
#define LCD_RD_ENABLE         	P5OUT&=~BIT0	//lcd read enable
#define LCD_CS_LOW        	P5OUT&=~BIT6	//chip select enable
#define LCD_CS_HIGH       	P5OUT|=BIT6	//chip select disable
#define LCD_WR_ENABLE      	P5OUT&=~BIT1	//lcd write enable
#define LCD_WR_DISABLE     	P5OUT|=BIT1  	//lcd write disable
#define LCD_A0_COMM       	P5OUT&=~BIT2	//when A0=0 -> command
#define LCD_A0_DATA       	P5OUT|=BIT2	//when A0=1 -> data
#define LCD_RESET_LOW      	P4OUT&=~BIT2	//lcd reset enable
#define LCD_RESET_HIGH      	P4OUT|=BIT2   	//lcd reset disable

/***************************************Lcd Command Macro Define**************************************/
#define ICON_ENABLE 	 	0xa3	//icon enable &set the page address to 16
#define ICON_DISABLE		0xa2	//icon disable (default)
#define SET_PAGE		0xb0	//set page address 
#define SET_COLUMN_MSB		0x10	//set column address MSB
#define SET_COLUMN_LSB		0x00	//set column address LSB
#define SET_MODIFY_READ		0xe0	//set modify-read mode
#define RESET_MODIFY_READ	0xee	//reset modify-read mode
#define DISPLAY_ON		0xaf	//display on
#define DISPLAY_OFF		0xae	//display off
#define SET_INITIAL_LINE_REG	0x40	//2-byte instruction to specify the initial display line to 
					//realize vertical scrolling
#define SET_INITIAL_COM0_REG	0x44	//2-byte instruction to specify the initial COM0 to realize 
					//windows scrolling without the change of display data
#define SET_PARTIAL_DISPLAY	0x48	//2-byte instruction to set partial display duty ratio
#define SET_N_LINE_INVERSION	0x4c	//2-byte instruction to set N-line inversion register
#define RELEASE_N_LINE_INVERSION 0xe4	//release N-line inversion mode
#define REVERSE_DISPLAY_ON	0xa7	//reverse display
#define REVERSE_DISPLAY_OFF	0xa6	//normal display
#define	ENTIRE_DISPLAY_ON	0xa5	//entire display on
#define ENTIRE_DISPLAY_OFF	0xa4	//entire display off
#define POWER_CONTROL		0x28	//control power circuit operation
#define SELECT_DC_STEP		0x64	//select the step-up of internal voltage converter
#define SELECT_REGULATOR_REG	0x20	//select the internal resistance ratio of the regulator resistor
#define SELECT_ELEC_VOL_REG	0x81	//2-byte instruction to specify the reference voltage
#define SELECT_LCD_BIAS		0x50	//select lcd bias
#define BIAS_POWER_SAVE_HIGH	0xf3	//bias power save save the bias current consumption(high)
#define BIAS_POWER_SAVE_LOW	0x00	//bias power save save the bias current consumption(low)

#define SHL_NORMAL_DIRECTION	0xc0	//SHL = 0: normal direction (COM0 → COM127)	
					//COM output scanning direction is selected by this instruction 
					//which determines the LCD driver output status.
#define SHL_REVERSE_DIRECTION	0xc8	//SHL = 1: reverse direction (COM127 → COM0)

#define ADC_NORMAL_DIRECTION	0xa0	//ADC = 0: normal direction (SEG0 → SEG127)	
					//Changes the relationship between RAM column address and segment
					//driver. The direction of segment driver output pins could be 
					//reversed by software. This makes IC layout flexible in LCD 
					//module assembly.
#define ADC_REVERSE_DIRECTION	0xa1	//ADC = 1: reverse direction (SEG127 → SEG0)

#define OSCILLATOR_ON		0xab	//start the built-in oscillator
#define POWER_NORMAL_MODE	0xa8	//P = 0: normal mode
#define POWER_SLEEP_MODE	0xa9	//P = 1: sleep mode
#define RELEASE_POWER_SAVE_MODE 0xe1	//release power save mode
#define SOFTWARE_RESET		0xe2	//initial the internal function

#define SET_FRC_PWM_MODE	0x90	/*	FRC 	PWM1 	PWM0 	Status of PWM & FRC
					   	 0				4FRC
					   	 1				3FRC
						 	 0	  0		9PWM
						 	 0	  1		9PWM
						 	 1	  0		12PWM
						 	 1	  1		15PWM	*/