root / trunk / code / projects / colonet / robot / dragonfly_wireless_relay / lcd.c @ 1390
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/*
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lcd-ar2.c - implementation for lcd functions
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Author: CMU Robotics Club, Colony Project
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This uses SPI.
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lcd_init MUST be called before anything can be used.
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*/
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#include <avr/io.h> |
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#include <lcd.h> |
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#include <time.h> |
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// data bus for LCD, pins on port 0
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//#define D0 16
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//#define D1 17
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//#define D2 18
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//#define D3 19
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//#define D4 20
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//#define D5 21
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//#define D6 22
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//#define D7 23
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// OLED data port
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//#define LCD_DATA 0x00FF0000
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// other OLED pins
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//#define LCD_RW 0x00000080
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#define LCD_RS PB4 // Command/Data |
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//#define LCD_RD 0x00008000
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#define LCD_RSTB PE2 // reset line |
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#define LCD_CS PB0
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// inialize OLED and SPI
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void OLED_init(void); |
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// reset Controller
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void Reset_SSD1339(void); |
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// write command or data
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void write_c(unsigned char out_command); |
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void write_d(unsigned char out_data); |
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// these write data to the OLED on 8 bit data bus, depends on MCU
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void LCD_out(unsigned char cmd); |
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// these functions set / clear pins for OLED control lines. they accecpt a 0 or 1
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//void RD(char stat);
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//void RW(char stat);
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void DC(char stat); |
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void RES(char stat); |
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void CS(char stat); |
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// a stupid delay
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//void delay_ms(int count);
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// LPC 2138 MCU initialization
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//void Initialize(void);
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//void feed(void);
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void crazycircle (void) { |
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/* int i;
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// draw 100 random circles
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for(i = 0;i < 100;i++){
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write_c(0x86); // draw circle command
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write_d(rand() % 130);
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write_d(rand() % 130);
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write_d(rand() % 64);
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write_d(rand());
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write_d(rand());
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write_d(rand());
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write_d(rand());
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delay_ms(10);
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}
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*/
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} |
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void OLEDtest (void) { |
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//int i = 0;
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// Initialize
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//Initialize();
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OLED_init(); |
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delay_ms(120);
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write_c(0x8e); // clear window command |
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write_d(0);
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write_d(0);
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write_d(130);
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write_d(130);
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delay_ms(100);
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write_c(0x92); // fill enable command |
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write_d(0x01);
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delay_ms(10);
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crazycircle(); |
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/*
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// write directly to ram, this fills up bottom 1/3 of display with color pattern
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write_c(0x5c);
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for (i = 0; i < 2000; i++){
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write_c(0x5c);
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write_d(i);
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write_d(i);
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write_d(i);
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}
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*/
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} |
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/**********************************************************
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Initialize
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**********************************************************/
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void OLED_init(void) |
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{ |
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// Setup SPI here
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SPCR = 0x5D; // enable SPI, master, SPI mode 3 |
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DDRB |= 0x06; // enable MOSI and SCK as outputs |
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LCD_out(0);
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DC(0);
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CS(0);
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Reset_SSD1339(); |
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write_c(0xa0); // Set Re-map / Color Depth |
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write_d(0x34);//0xb4); // 262K 8bit R->G->B |
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write_c(0xa1); // Set display start line |
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write_d(0x00); // 00h start |
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//write_c(0xa2); // Set display offset
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//write_d(0x80); // 80h start
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write_c(0xA6); // Normal display |
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write_c(0xad); // Set Master Configuration |
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write_d(0x8e); // DC-DC off & external VcomH voltage & external pre-charge voltage |
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write_c(0xb0); // Power saving mode |
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write_d(0x05);
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write_c(0xb1); // Set pre & dis_charge |
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write_d(0x11); // pre=1h dis=1h |
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write_c(0xb3); // clock & frequency |
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write_d(0xf0); // clock=Divser+1 frequency=fh |
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write_c(0xbb); // Set pre-charge voltage of color A B C |
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write_d(0xff); // color A was 1c |
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write_d(0xff); // color B was 1c |
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write_d(0xff); // color C was 1c |
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write_c(0xbe); // Set VcomH |
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write_d(0x1f); // |
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write_c(0xc1); // Set contrast current for A B C |
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write_d(0xCa); // Color A was AA |
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write_d(0xD4); // Color B was B4 |
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write_d(0xF8); // Color C was C8 |
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write_c(0xc7); // Set master contrast |
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write_d(0x0f); // no change |
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write_c(0xca); // Duty |
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write_d(0x7f); // 127+1 |
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write_c(0xaf); // Display on |
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} |
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void Reset_SSD1339(void) |
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{ |
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RES(0);
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delay_ms(100);
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RES(1);
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} |
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void write_c(unsigned char out_command) |
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{ |
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DC(0);CS(0); |
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//delay_ms(1);
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LCD_out(out_command); |
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// delay_ms(1);
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DC(1);
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// potentially add NOP
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CS(1);
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} |
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void write_d(unsigned char out_data) |
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{ |
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DC(1);CS(0); |
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// delay_ms(1);
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LCD_out(out_data); |
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// delay_ms(1);
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DC(1);
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//potentially add NOP
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CS(1);
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} |
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// these functions set / clear pins for LCD control lines. they accecpt a 0 or 1
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void DC(char stat) |
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{ |
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DDRB |= _BV(LCD_RS); // RS is P0.30, set to output
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if (stat)
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PORTB |= _BV(LCD_RS); |
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else
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PORTB &= ~(_BV(LCD_RS)); |
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} |
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void RES(char stat) |
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{ |
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DDRE |= _BV(LCD_RSTB); // RSTB is P0.7, set to output
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if (stat)
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PORTE |= _BV(LCD_RSTB); |
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else
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PORTE &= ~(_BV(LCD_RSTB)); |
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} |
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void CS(char stat) |
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{ |
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DDRB |= _BV(LCD_CS); // RSTB is P0.7, set to output
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if (stat)
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PORTB |= _BV(LCD_CS); |
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else
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PORTB &= ~(_BV(LCD_CS)); |
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} |
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// send to the LCD
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void LCD_out(unsigned char cmd) |
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{ |
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SPDR = cmd; |
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// could also do this via interrupts
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loop_until_bit_is_set(SPSR, SPIF); |
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} |
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//**************************************Old shit below!*****************
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/*
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FontLookup - a lookup table for all characters
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*/
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static const unsigned char FontLookup [][5] = |
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{ |
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{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // sp |
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{ 0x00, 0x00, 0x5f, 0x00, 0x00 }, // ! |
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{ 0x00, 0x07, 0x00, 0x07, 0x00 }, // " |
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{ 0x14, 0x7f, 0x14, 0x7f, 0x14 }, // # |
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{ 0x24, 0x2a, 0x7f, 0x2a, 0x12 }, // $ |
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{ 0x23, 0x13, 0x08, 0x64, 0x62 }, // % |
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{ 0x36, 0x49, 0x55, 0x22, 0x50 }, // & |
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{ 0x00, 0x05, 0x03, 0x00, 0x00 }, // ' |
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{ 0x00, 0x1c, 0x22, 0x41, 0x00 }, // ( |
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{ 0x00, 0x41, 0x22, 0x1c, 0x00 }, // ) |
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{ 0x14, 0x08, 0x3E, 0x08, 0x14 }, // * |
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{ 0x08, 0x08, 0x3E, 0x08, 0x08 }, // + |
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{ 0x00, 0x00, 0x50, 0x30, 0x00 }, // , |
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{ 0x10, 0x10, 0x10, 0x10, 0x10 }, // - |
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{ 0x00, 0x60, 0x60, 0x00, 0x00 }, // . |
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{ 0x20, 0x10, 0x08, 0x04, 0x02 }, // / |
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{ 0x3E, 0x51, 0x49, 0x45, 0x3E }, // 0 |
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{ 0x00, 0x42, 0x7F, 0x40, 0x00 }, // 1 |
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{ 0x42, 0x61, 0x51, 0x49, 0x46 }, // 2 |
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{ 0x21, 0x41, 0x45, 0x4B, 0x31 }, // 3 |
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{ 0x18, 0x14, 0x12, 0x7F, 0x10 }, // 4 |
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{ 0x27, 0x45, 0x45, 0x45, 0x39 }, // 5 |
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{ 0x3C, 0x4A, 0x49, 0x49, 0x30 }, // 6 |
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{ 0x01, 0x71, 0x09, 0x05, 0x03 }, // 7 |
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{ 0x36, 0x49, 0x49, 0x49, 0x36 }, // 8 |
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{ 0x06, 0x49, 0x49, 0x29, 0x1E }, // 9 |
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{ 0x00, 0x36, 0x36, 0x00, 0x00 }, // : |
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{ 0x00, 0x56, 0x36, 0x00, 0x00 }, // ; |
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{ 0x08, 0x14, 0x22, 0x41, 0x00 }, // < |
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{ 0x14, 0x14, 0x14, 0x14, 0x14 }, // = |
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{ 0x00, 0x41, 0x22, 0x14, 0x08 }, // > |
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{ 0x02, 0x01, 0x51, 0x09, 0x06 }, // ? |
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{ 0x32, 0x49, 0x59, 0x51, 0x3E }, // @ |
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{ 0x7E, 0x11, 0x11, 0x11, 0x7E }, // A |
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{ 0x7F, 0x49, 0x49, 0x49, 0x36 }, // B |
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{ 0x3E, 0x41, 0x41, 0x41, 0x22 }, // C |
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{ 0x7F, 0x41, 0x41, 0x22, 0x1C }, // D |
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{ 0x7F, 0x49, 0x49, 0x49, 0x41 }, // E |
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{ 0x7F, 0x09, 0x09, 0x09, 0x01 }, // F |
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{ 0x3E, 0x41, 0x49, 0x49, 0x7A }, // G |
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{ 0x7F, 0x08, 0x08, 0x08, 0x7F }, // H |
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{ 0x00, 0x41, 0x7F, 0x41, 0x00 }, // I |
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{ 0x20, 0x40, 0x41, 0x3F, 0x01 }, // J |
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{ 0x7F, 0x08, 0x14, 0x22, 0x41 }, // K |
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{ 0x7F, 0x40, 0x40, 0x40, 0x40 }, // L |
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{ 0x7F, 0x02, 0x0C, 0x02, 0x7F }, // M |
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{ 0x7F, 0x04, 0x08, 0x10, 0x7F }, // N |
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{ 0x3E, 0x41, 0x41, 0x41, 0x3E }, // O |
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{ 0x7F, 0x09, 0x09, 0x09, 0x06 }, // P |
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{ 0x3E, 0x41, 0x51, 0x21, 0x5E }, // Q |
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{ 0x7F, 0x09, 0x19, 0x29, 0x46 }, // R |
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{ 0x46, 0x49, 0x49, 0x49, 0x31 }, // S |
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{ 0x01, 0x01, 0x7F, 0x01, 0x01 }, // T |
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{ 0x3F, 0x40, 0x40, 0x40, 0x3F }, // U |
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{ 0x1F, 0x20, 0x40, 0x20, 0x1F }, // V |
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{ 0x3F, 0x40, 0x38, 0x40, 0x3F }, // W |
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{ 0x63, 0x14, 0x08, 0x14, 0x63 }, // X |
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{ 0x07, 0x08, 0x70, 0x08, 0x07 }, // Y |
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{ 0x61, 0x51, 0x49, 0x45, 0x43 }, // Z |
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{ 0x00, 0x7F, 0x41, 0x41, 0x00 }, // [ |
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{ 0x02, 0x04, 0x08, 0x10, 0x20 }, // backslash |
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{ 0x00, 0x41, 0x41, 0x7F, 0x00 }, // ] |
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{ 0x04, 0x02, 0x01, 0x02, 0x04 }, // ^ |
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{ 0x40, 0x40, 0x40, 0x40, 0x40 }, // _ |
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{ 0x00, 0x01, 0x02, 0x04, 0x00 }, // ' |
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{ 0x20, 0x54, 0x54, 0x54, 0x78 }, // a |
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{ 0x7F, 0x48, 0x44, 0x44, 0x38 }, // b |
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{ 0x38, 0x44, 0x44, 0x44, 0x20 }, // c |
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{ 0x38, 0x44, 0x44, 0x48, 0x7F }, // d |
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{ 0x38, 0x54, 0x54, 0x54, 0x18 }, // e |
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{ 0x08, 0x7E, 0x09, 0x01, 0x02 }, // f |
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{ 0x0C, 0x52, 0x52, 0x52, 0x3E }, // g |
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{ 0x7F, 0x08, 0x04, 0x04, 0x78 }, // h |
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{ 0x00, 0x44, 0x7D, 0x40, 0x00 }, // i |
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{ 0x20, 0x40, 0x44, 0x3D, 0x00 }, // j |
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{ 0x7F, 0x10, 0x28, 0x44, 0x00 }, // k |
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{ 0x00, 0x41, 0x7F, 0x40, 0x00 }, // l |
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{ 0x7C, 0x04, 0x18, 0x04, 0x78 }, // m |
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{ 0x7C, 0x08, 0x04, 0x04, 0x78 }, // n |
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{ 0x38, 0x44, 0x44, 0x44, 0x38 }, // o |
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{ 0x7C, 0x14, 0x14, 0x14, 0x08 }, // p |
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{ 0x08, 0x14, 0x14, 0x18, 0x7C }, // q |
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{ 0x7C, 0x08, 0x04, 0x04, 0x08 }, // r |
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{ 0x48, 0x54, 0x54, 0x54, 0x20 }, // s |
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{ 0x04, 0x3F, 0x44, 0x40, 0x20 }, // t |
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{ 0x3C, 0x40, 0x40, 0x20, 0x7C }, // u |
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{ 0x1C, 0x20, 0x40, 0x20, 0x1C }, // v |
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{ 0x3C, 0x40, 0x30, 0x40, 0x3C }, // w |
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{ 0x44, 0x28, 0x10, 0x28, 0x44 }, // x |
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{ 0x0C, 0x50, 0x50, 0x50, 0x3C }, // y |
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{ 0x44, 0x64, 0x54, 0x4C, 0x44 }, // z |
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{ 0x00, 0x08, 0x36, 0x41, 0x41 }, // { |
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{ 0x00, 0x00, 0x7F, 0x00, 0x00 }, // | |
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{ 0x41, 0x41, 0x36, 0x08, 0x00 }, // } |
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{ 0x02, 0x01, 0x01, 0x02, 0x01 }, // ~ |
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{ 0x55, 0x2A, 0x55, 0x2A, 0x55 }, // del |
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}; |
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/*
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initializes the LCD
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*/
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void lcd_init(void) |
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{ |
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LCDDDR |= (SCE | SDI | SCK); |
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LCDRESETDDR |= (RST|D_C); |
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LCDPORT &= ~( SCE | SDI | SCK); |
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LCDRESETPORT &=~(D_C); |
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SPCR |= 0x50; // no SPI int, SPI en, Master, sample on rising edge, fosc/2 |
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SPSR |= 0x01; // a continuation of the above |
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LCDRESETPORT |= RST; |
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delay_ms(10);
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LCDRESETPORT &= (~RST); |
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delay_ms(100);
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LCDRESETPORT |= RST; |
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lcd_putbyte( 0x21 ); // LCD Extended Commands. |
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lcd_putbyte( 0xC8 ); // Set LCD Vop (Contrast). |
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lcd_putbyte( 0x06 ); // Set Temp coefficent. |
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lcd_putbyte( 0x13 ); // LCD bias mode 1:48. |
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lcd_putbyte( 0x20 ); // LCD Standard Commands, Horizontal addressing mode. |
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lcd_putbyte( 0x0C ); // LCD in normal mode. |
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LCDRESETPORT |= D_C; //put it in init instead of main
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lcd_clear_screen(); |
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} |
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/*
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clear the lcd screen
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*/
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void lcd_clear_screen( void ) { |
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int i;
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for (i = 0; i < 504; i++) |
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lcd_putbyte(0x0);
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lcd_gotoxy(0,0); |
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} |
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/*
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print a byte on the lcd screen
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*/
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void lcd_putbyte(unsigned char b) |
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{ |
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SPDR = b; |
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while (!(SPSR & 0x80)); /* Wait until SPI transaction is complete */ |
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} |
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/*
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print a character on the lcd
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*/
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void lcd_putchar(char c) |
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{ |
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int i;
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for (i = 0; i < 5; i++) |
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lcd_putbyte(FontLookup[c-32][i]);
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lcd_putbyte(0);
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} |
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/*
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print an entire string to the lcd
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*/
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void lcd_putstr(char *s) |
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{ |
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char *t = s;
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while (*t != 0) |
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{ |
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lcd_putchar(*t); |
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t++; |
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} |
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} |
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/*
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go to coordinate x, y
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y: vertically - 1 char
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x: horizontally - 1 pixel
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multiply x by 6 if want to move 1 entire character
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origin (0,0) is at top left corner of lcd screen
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*/
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void lcd_gotoxy(int x, int y) |
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{ |
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LCDRESETPORT &= ~(D_C); |
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lcd_putbyte(0x40 | (y & 0x07)); |
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lcd_putbyte(0x80 | (x & 0x7f)); |
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LCDRESETPORT |= D_C; |
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} |
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/*
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prints an int to the lcd
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code adapted from Chris Efstathiou's code (hendrix@otenet.gr)
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*/
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void lcd_putint(int value ) { |
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unsigned char lcd_data[6]={'0','0','0','0','0','0' }, position=sizeof(lcd_data), radix=10; |
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/* convert int to ascii */
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if(value<0) { lcd_putchar('-'); value=-value; } |
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do { position--; *(lcd_data+position)=(value%radix)+'0'; value/=radix; } while(value); |
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/* start displaying the number */
|
464 |
for(;position<=(sizeof(lcd_data)-1);position++) |
465 |
{ |
466 |
|
467 |
lcd_putchar(lcd_data[position]); |
468 |
} |
469 |
|
470 |
return;
|
471 |
} |