/*,-----------------------------------------------------------------------------------------.| io/plot|-----------------------------------------------------------------------------------------| this file implements a very basic bmp generator| - plot temperature graph as a black and white BMP|| Author   : {{removed according to contest rules}}|            -> circuitcellar.com avr design contest 2006|            -> Entry #AT2616||-----------------------------------------------------------------------------------------| License:| This program is free software; you can redistribute it and/or modify it under| the terms of the GNU General Public License as published by the Free Software| Foundation; either version 2 of the License, or (at your option) any later| version.| This program is distributed in the hope that it will be useful, but|| WITHOUT ANY WARRANTY;|| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR| PURPOSE. See the GNU General Public License for more details.|| You should have received a copy of the GNU General Public License along with| this program; if not, write to the Free Software Foundation, Inc., 51| Franklin St, Fifth Floor, Boston, MA 02110, USA|| http://www.gnu.de/gpl-ger.html`-----------------------------------------------------------------------------------------*/#include "plot.h"//ACTIVATE DEBUG by editing this file:#include "debug.h"#define PLOT_BMP_HEADER_LENGTH 62//bmp data must be a multiple of 16 ?! -> maybe add padding !#define PLOT_BMP_WIDTH 264//264 pixel -> 33 byte ! must be divided by 4 -> use 36 byte -> use 288px !#define PLOT_BMP_LINE_WIDTH 288#define PLOT_BMP_HEIGHT 136//288 -> 36 bytes -> 36/4 = 9 -> OK!#define PLOT_BMP_FILESIZE (PLOT_BMP_LINE_WIDTH/8)*(PLOT_BMP_HEIGHT)+62PROGMEM unsigned char PLOT_BMP_HEAD [] = {0x42, 0x4D, 0x5E, 0x13, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //100x3E, 0x00, 0x00, 0x00, //first image data at pos 0x3E -> at byte 620x28, 0x00, 0x00, 0x00, //header size (infoheader only!!) -> 40 byteslo8(PLOT_BMP_WIDTH), hi8(PLOT_BMP_WIDTH), 0x00, 0x00, //width <lo,hi,0,0>lo8(PLOT_BMP_HEIGHT), hi8(PLOT_BMP_HEIGHT), 0x00, 0x00, //height <lo,hi,0,0>0x01, 0x00, //1color plane0x01, 0x00, //1bit0x00, 0x00, 0x00, 0x00, //no compressionlo8(PLOT_BMP_FILESIZE), hi8(PLOT_BMP_FILESIZE), 0x00, 0x00, //imagesize in bytes: -> 0x1320 = 4896 bytes0x10, 0x0B, 0x00, 0x00, //x pixels per meter0x10, 0x0B, 0x00, 0x00, //y pixels per meter0x02, 0x00, 0x00, 0x00, //2 colors (B/W)0x02, 0x00, 0x00, 0x00, //2 important colors0xFF, //background B0xFF, //background G0xFF, //background R0x00,0xFF, //foreground B0x00, //foreground G0x00, //foreground R0x00 //62};PROGMEM unsigned char PLOT_BMP_LEGEND[] = {//0x00, 0x00, 0x00,//0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x03, 0xC3, 0x81, 0x02, 0x04, 0x41, 0xE1, 0x04, 0x47,0x00, 0x84, 0x41, 0x00, 0x44, 0x41, 0x02, 0x46, 0x41, 0x01, 0x83, 0x81,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x01, 0xC3, 0x81, 0x00, 0x84, 0x41, 0x70, 0x84, 0x47, 0x00, 0x84, 0x41,0x00, 0x84, 0x41, 0x01, 0x86, 0x41, 0x00, 0x83, 0x81, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x03, 0x81,0x00, 0x04, 0x41, 0x00, 0x04, 0x47, 0x00, 0x04, 0x41, 0x00, 0x04, 0x41,0x00, 0x06, 0x41, 0x00, 0x03, 0x81, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x01, 0xC3, 0x81, 0x00, 0x84, 0x41,0x00, 0x84, 0x47, 0x00, 0x84, 0x41, 0x00, 0x84, 0x41, 0x01, 0x86, 0x41,0x00, 0x83, 0x81, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x03, 0xC3, 0x81, 0x02, 0x04, 0x41, 0x01, 0x04, 0x47,0x00, 0x84, 0x41, 0x00, 0x44, 0x41, 0x02, 0x46, 0x41, 0x01, 0x83, 0x81,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x03, 0x83, 0x81, 0x02, 0x44, 0x41, 0x00, 0x44, 0x47, 0x00, 0xC4, 0x41,0x01, 0x84, 0x41, 0x00, 0x46, 0x41, 0x03, 0x83, 0x81, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x43, 0x81,0x00, 0x44, 0x41, 0x03, 0xE4, 0x47, 0x01, 0x44, 0x41, 0x01, 0x44, 0x41,0x00, 0xC6, 0x41, 0x00, 0x43, 0x81, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x03, 0xC3, 0x81, 0x02, 0x64, 0x41,0x00, 0x24, 0x47, 0x02, 0x24, 0x41, 0x03, 0xC4, 0x41, 0x02, 0x06, 0x41,0x03, 0xC3, 0x81, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01,0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x1C, 0x01, 0x00, 0x20, 0x01,0x00, 0x20, 0x01, 0x02, 0x10, 0x01, 0x05, 0x0C, 0x01, 0x02, 0x00, 0x01,0x00, 0x00, 0x01};void plot_test(){	//for (unsigned int x=0; x<288; x++)	//	eeprom_write_byte(&logger_temp_today[x], 130-x/4+80.0*sin((3.14*x)/30.0)/3.14);//  70+(x)%60);	//plot_generate_bmp(&temp[0]);}unsigned int plot_generate_bmp(unsigned char *buffer, unsigned int datapos, unsigned int len, unsigned int streampos, unsigned char source){	unsigned int x;	unsigned char y;	unsigned char out;	unsigned char eedata;	unsigned char hour_counter;	unsigned char eedata_old;	int yee;	unsigned char eepos;	unsigned char b;	eedata = (32<<1);	eedata_old = (32<<1);	//step1: send bmp header (if requested)	PGM_P header_ptr = PLOT_BMP_HEAD;	for(x=streampos; x<PLOT_BMP_HEADER_LENGTH; x++){		buffer[datapos++] = pgm_read_byte(header_ptr++);		streampos++;		len--;		//no more data allowed		if (len == 0)			return 0;	}	//step2 generate plot:	//calculate position: streampos must be > PLOT_BMP_HEADER_LEN now...	streampos -= PLOT_BMP_HEADER_LENGTH;	//-> we must skip now #streampos bytes!		//generate bottom border:	for(x=streampos; x<PLOT_BMP_LINE_WIDTH/8; x++){		if (x<24/8)			buffer[datapos++] = 0x00;		else			buffer[datapos++] = 0xFF;		streampos++;		len --;		//no more data allowed		if (len == 0)			return 0;	}		//recalculate pos:	streampos -= PLOT_BMP_LINE_WIDTH/8;	//skip now #streampos bytes	y = (streampos/(PLOT_BMP_LINE_WIDTH/8));	x = streampos - y*(PLOT_BMP_LINE_WIDTH/8);	//calculate start index of hour counter (draws vertical hour marks)	hour_counter = 10;	if (x>3)		hour_counter = 10 - (((x-3)*8) % 10);			//softuart_puts_progmem("y: ");softuart_put_uint16(y);	//softuart_puts_progmem("x: ");softuart_put_uint16(8*x);	PGM_P legend_ptr = PLOT_BMP_LEGEND;	if (y != 0)		legend_ptr += 3*(y+1);	if (x < 24/8){		legend_ptr += x;	}	y = (135) - y;	unsigned char picpos_now = (clock[CLOCK_HOUR]*60+clock[CLOCK_MIN])/6;	if (picpos_now > (23*60+59)/6)		picpos_now = (23*60+59)/6;	//main image:	for( ; y>1; y--){		//show data:		if (y==92){			for( ; x<PLOT_BMP_LINE_WIDTH/8; x++){				if (x<(24/8)){					out = pgm_read_byte(legend_ptr++);				}else{					out = 0xFF;				}				buffer[datapos++] = out;				len--;								if (len == 0)					return 0;			}			x=0;		}else{			//y = 91 - (((ee-(32<<1))*4)/3)			//-> (ee-(32<<1))*4/3 = (91 - y) <=> (3(91-y))/4 = (ee-(32<<1)) <=> (3(91-y))/4 + (32<<1) = ee			yee = ((92 - y)*4)/3 + (32<<1);						//data source ?!			if (source == PLOT_SOURCE_EEPROM)				eedata_old = eeprom_read_byte(&logger_temp_today[0]); //EEPROM			else				eedata_old = eedata_old + 1; //DATAFLASH			for( ; x<PLOT_BMP_LINE_WIDTH/8; x++){				if (x<(24/8)){					out = (pgm_read_byte(legend_ptr++));				}else{					out = 0x00;										for(b=0; b<8; b++){						out = out<<1;						eepos   = ((x-3)*8+b);						//get data:						if (source == PLOT_SOURCE_EEPROM){							eedata  = eeprom_read_byte(&logger_temp_today[eepos]); //EEPROM						}else{							eedata = eedata + 1; //DATAFLASH -> add later! FIXME						}												//bold line:						//if ((yee+2 > (eedata&0xFF)) && (yee-2 < (eedata&0xFF)))						//	out += 1;						//filled:						/*if (yee > (32<<1)){							if (yee < (eedata&0xFF))								out += 1;						}else{							if (yee > (eedata&0xFF))								out += 1;						}*/						//connected line:						if (eedata_old < eedata){							if ((yee > eedata_old-1) && (yee <= eedata+1))								out |= 1;						}else{							if ((yee <= eedata_old+1) && (yee > eedata-1))								out |= 1;						}						eedata_old = eedata;						//add now marker:						if (eepos == picpos_now)							out |= 1;												//draw a vertical line every 60min (=10px)						hour_counter--;						if (!hour_counter){							hour_counter = 10;							if(!(y&0x03))								out|=1;						}					}					//mark every 48 min (=8 pixel)					//if(((x-3)&0x01) && (y&0x01))					//	out|=1;				}				//right border				if (x == ((PLOT_BMP_WIDTH/8)-1)) //BMP WITH !!! (=280, do not use 288 here)					out |= 1;				buffer[datapos++] = out;				len--;				streampos++;				if (len == 0)					return 0;			}			x = 0;			//restart hour_counter (draws vertical lines)			hour_counter = 10;		}	}		//recalc streampos:	streampos  = streampos - 134*(PLOT_BMP_LINE_WIDTH/8);	legend_ptr = PLOT_BMP_LEGEND + 134*3;	//generate bottom border:	for(x=streampos; x<PLOT_BMP_LINE_WIDTH/8; x++){		if (x<24/8)			buffer[datapos++] = pgm_read_byte(legend_ptr++);		else			buffer[datapos++] = 0xFF;				len--;		if (len == 0){			if (x<PLOT_BMP_LINE_WIDTH/8-1)				return 0;			else 				return datapos;		}	}	return datapos;}