LCD_menu.zip_LCD_MENU_atmega128 menu_menu.c

//***************************************************************************** // // File Name : 'lcd_lib.c' // Title : 8 and 4 bit LCd interface // Author : Scienceprog.com - Copyright (C) 2007 // Created : 2007-03-29 // Revised : 2007-08-08 // Version : 1.0 // Target MCU : Atmel AVR series // // This code is distributed under the GNU Public License // which can be found at http://www.gnu.org/licenses/gpl.txt // //***************************************************************************** #include "lcd_lib.h" #include <inttypes.h> #include <avr/io.h> #include <avr/pgmspace.h> #include <util/delay.h> const uint8_t LcdCustomChar[] PROGMEM=//define 8 custom LCD chars { 0x00, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x00, // 0. 0/5 full progress block 0x00, 0x1F, 0x10, 0x10, 0x10, 0x10, 0x1F, 0x00, // 1. 1/5 full progress block 0x00, 0x1F, 0x18, 0x18, 0x18, 0x18, 0x1F, 0x00, // 2. 2/5 full progress block 0x00, 0x1F, 0x1C, 0x1C, 0x1C, 0x1C, 0x1F, 0x00, // 3. 3/5 full progress block 0x00, 0x1F, 0x1E, 0x1E, 0x1E, 0x1E, 0x1F, 0x00, // 4. 4/5 full progress block 0x00, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00, // 5. 5/5 full progress block 0x03, 0x07, 0x0F, 0x1F, 0x0F, 0x07, 0x03, 0x00, // 6. rewind arrow 0x18, 0x1C, 0x1E, 0x1F, 0x1E, 0x1C, 0x18, 0x00 // 7. fast-forward arrow }; void LCDsendChar(uint8_t ch) //Sends Char to LCD { #ifdef LCD_4bit //4 bit part LDP=(ch&0b11110000); LCP|=1<<LCD_RS; LCP|=1<<LCD_E; _delay_ms(1); LCP&=~(1<<LCD_E); LCP&=~(1<<LCD_RS); _delay_ms(1); LDP=((ch&0b00001111)<<4); LCP|=1<<LCD_RS; LCP|=1<<LCD_E; _delay_ms(1); LCP&=~(1<<LCD_E); LCP&=~(1<<LCD_RS); _delay_ms(1); #else //8 bit part LDP=ch; LCP|=1<<LCD_RS; LCP|=1<<LCD_E; _delay_ms(1); LCP&=~(1<<LCD_E); LCP&=~(1<<LCD_RS); _delay_ms(1); #endif } void LCDsendCommand(uint8_t cmd) //Sends Command to LCD { #ifdef LCD_4bit //4 bit part LDP=(cmd&0b11110000); LCP|=1<<LCD_E; _delay_ms(1); LCP&=~(1<<LCD_E); _delay_ms(1); LDP=((cmd&0b00001111)<<4); LCP|=1<<LCD_E; _delay_ms(1); LCP&=~(1<<LCD_E); _delay_ms(1); #else //8 bit part LDP=cmd; LCP|=1<<LCD_E; _delay_ms(1); LCP&=~(1<<LCD_E); _delay_ms(1); #endif } void LCDinit(void)//Initializes LCD { #ifdef LCD_4bit //4 bit part _delay_ms(15); LDP=0x00; LCP=0x00; LDDR|=1<<LCD_D7|1<<LCD_D6|1<<LCD_D5|1<<LCD_D4; LCDR|=1<<LCD_E|1<<LCD_RW|1<<LCD_RS; //---------one------ LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //4 bit mode LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS; _delay_ms(1); LCP&=~(1<<LCD_E); _delay_ms(1); //-----------two----------- LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //4 bit mode LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS; _delay_ms(1); LCP&=~(1<<LCD_E); _delay_ms(1); //-------three------------- LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|0<<LCD_D4; //4 bit mode LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS; _delay_ms(1); LCP&=~(1<<LCD_E); _delay_ms(1); //--------4 bit--dual line--------------- LCDsendCommand(0b00101000); //-----increment address, invisible cursor shift------ LCDsendCommand(0b00001100); //init 8 custom chars uint8_t ch=0, chn=0; while(ch<64) { LCDdefinechar((LcdCustomChar+ch),chn++); ch=ch+8; } #else //8 bit part _delay_ms(15); LDP=0x00; LCP=0x00; LDDR|=1<<LCD_D7|1<<LCD_D6|1<<LCD_D5|1<<LCD_D4|1<<LCD_D3 |1<<LCD_D2|1<<LCD_D1|1<<LCD_D0; LCDR|=1<<LCD_E|1<<LCD_RW|1<<LCD_RS; //---------one------ LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4|0<<LCD_D3 |0<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS; _delay_ms(1); LCP&=~(1<<LCD_E); _delay_ms(1); //-----------two----------- LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4|0<<LCD_D3 |0<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS; _delay_ms(1); LCP&=~(1<<LCD_E); _delay_ms(1); //-------three------------- LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4|0<<LCD_D3 |0<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS; _delay_ms(1); LCP&=~(1<<LCD_E); _delay_ms(1); //--------8 bit dual line---------- LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4|1<<LCD_D3 |0<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS; _delay_ms(1); LCP&=~(1<<LCD_E); _delay_ms(1); //-----increment address, invisible cursor shift------ LDP=0<<LCD_D7|0<<LCD_D6|0<<LCD_D5|0<<LCD_D4|1<<LCD_D3 |1<<LCD_D2|0<<LCD_D1|0<<LCD_D0; //8 it mode LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS; _delay_ms(1); LCP&=~(1<<LCD_E); _delay_ms(5); //init custom chars uint8_t ch=0, chn=0; while(ch<64) { LCDdefinechar((LcdCustomChar+ch),chn++); ch=ch+8; } #endif } void LCDclr(void) //Clears LCD { LCDsendCommand(1<<LCD_CLR); } void LCDhome(void) //LCD cursor home { LCDsendCommand(1<<LCD_HOME); } void LCDstring(uint8_t* data, uint8_t nBytes) //Outputs string to LCD { register uint8_t i; // check to make sure we have a good pointer if (!data) return; // print data for(i=0; i<nBytes; i++) { LCDsendChar(data[i]); } } void LCDGotoXY(uint8_t x, uint8_t y) //Cursor to X Y position { register uint8_t DDRAMAddr; // remap lines into proper order switch(y) { case 0: DDRAMAddr = LCD_LINE0_DDRAMADDR+x; break; case 1: DDRAMAddr = LCD_LINE1_DDRAMADDR+x; break; case 2: DDRAMAddr = LCD_LINE2_DDRAMADDR+x; break; case 3: DDRAMAddr = LCD_LINE3_DDRAMADDR+x; break; default: DDRAMAddr = LCD_LINE0_DDRAMADDR+x; } // set data address LCDsendCommand(1<<LCD_DDRAM | DDRAMAddr); } //Copies string from flash memory to LCD at x y position //const uint8_t welcomeln1[] PROGMEM="AVR LCD DEMO\0"; //CopyStringtoLCD(welcomeln1, 3, 1); void CopyStringtoLCD(const uint8_t *FlashLoc, uint8_t x, uint8_t y) { uint8_t i; LCDGotoXY(x,y); for(i=0;(uint8_t)pgm_read_byte(&FlashLoc[i]);i++) { LCDsendChar((uint8_t)pgm_read_byte(&FlashLoc[i])); } } //defines char symbol in CGRAM /* const uint8_t backslash[] PROGMEM= { 0b00000000,//back slash 0b00010000, 0b00001000, 0b00000100, 0b00000010, 0b00000001, 0b00000000, 0b00000000 }; LCDdefinechar(backslash,0); */ void LCDdefinechar(const uint8_t *pc,uint8_t char_code){ uint8_t a, pcc; uint16_t i; a=(char_code<<3)|0x40; for (i=0; i<8; i++){ pcc=pgm_read_byte(&pc[i]); LCDsendCommand(a++); LCDsendChar(pcc); } } void LCDshiftLeft(uint8_t n) //Scrol n of characters Right { for (uint8_t i=0;i<n;i++) { LCDsendCommand(0x1E); } } void LCDshiftRight(uint8_t n) //Scrol n of characters Left { for (uint8_t i=0;i<n;i++) { LCDsendCommand(0x18); } } void LCDcursorOn(void) //displays LCD cursor { LCDsendCommand(0x0E); } void LCDcursorOnBlink(void) //displays LCD blinking cursor { LCDsendCommand(0x0F); } void LCDcursorOFF(void) //turns OFF cursor { LCDsendCommand(0x0C); } void LCDblank(void) //blanks LCD { LCDsendCommand(0x08); } void LCDvisible(void) //Shows LCD { LCDsendCommand(0x0C); } void LCDcursorLeft(uint8_t n) //Moves cursor by n poisitions left { for (uint8_t i=0;i<n;i++) { LCDsendCommand(0x10); } } void LCDcursorRight(uint8_t n) //Moves cursor by n poisitions left { for (uint8_t i=0;i<n;i++) { LCDsendCommand(0x14); } } //adapted fro mAVRLIB void LCDprogressBar(uint8_t progress, uint8_t maxprogress, uint8_t length) { uint8_t i; uint16_t pixelprogress; uint8_t c; // draw a progress bar displaying (progress / maxprogress) // starting from the current cursor position // with a total length of "length" characters // ***note, LCD chars 0-5 must be programmed as the bar characters // char 0 = empty ... char 5 = full // total pixel length of bargraph equals length*PROGRESSPIXELS_PER_CHAR; // pixel length of bar itself is pixelprogress = ((progress*(length*PROGRESSPIXELS_PER_CHAR))/maxprogress); // print exactl