├── Makefile ├── README.md ├── pomodoro.asm └── LICENSE /Makefile: -------------------------------------------------------------------------------- 1 | MCU=attiny85 2 | CPU=1000000UL 3 | AS=avr-as 4 | LD=avr-ld 5 | AVRDUDE=avrdude 6 | OBJCOPY=avr-objcopy 7 | SFLAGS=-mmcu=$(MCU) -agslh --statistics 8 | 9 | OBJS=pomodoro.o 10 | 11 | all: pomodoro.hex 12 | 13 | 14 | %.o: %.asm 15 | $(AS) $(SFLAGS) -c -o $@ $< 16 | 17 | pomodoro.elf: $(OBJS) 18 | $(LD) $(LDFLAS) -o $@ $< 19 | 20 | pomodoro.hex: pomodoro.elf 21 | $(OBJCOPY) --output-target=ihex $< $@ 22 | 23 | upload: $(FILE) 24 | ifdef FILE 25 | $(AVRDUDE) -v -c usbtiny -p t85 -U flash:w:$(FILE) 26 | else 27 | @echo "You need to specify file to upload like:" 28 | @echo " make upload FILE=\"test.hex\"" 29 | endif 30 | 31 | .PHONY: clean 32 | 33 | clean: 34 | rm -f *.elf *.hex *.o 35 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # pomo 2 | 3 | _pomo_ is a small AVR project thats help you to manage the pomodoro 4 | method. [Pomodoro](https://en.wikipedia.org/wiki/Pomodoro_Technique) 5 | is a time management method to increase mental agility. 6 | 7 | The _pomo_ device can look like anything but will have 4 leds and 2 8 | buttons to assist you with your time management. First button is a 9 | power switch turning the device on and off. The second button is a 10 | push button which will break out from a pause and start next pomodoro 11 | timer or reset the device starting with a new pomodoro cycle. 12 | 13 | The _pomo_ device is battery driven and there for we need a design to 14 | extend the battery life. To minimize the current draw each led is 15 | displayed @ 50fps and never at the same time. This leaves us with a 16 | clock of the main program of 200fps eg. 5ms. 17 | 18 | 19 | ## building 20 | 21 | To build the source you need following requirements: make, gnu avr 22 | toolchain and avrdude. 23 | 24 | To build the program just do: 25 | 26 | make 27 | 28 | or if you have the _usbtiny_ programmer just do: 29 | 30 | make upload FILE="pomodoro.hex" 31 | 32 | -------------------------------------------------------------------------------- /pomodoro.asm: -------------------------------------------------------------------------------- 1 | ;;; 2 | ;;; Pomodoro for AVR - ATtiny25/45/85 3 | ;;; 4 | ;;; Copyright 2016 Henrik Andersson 5 | ;;; 6 | ;;; This program is free software: you can redistribute it and/or modify 7 | ;;; it under the terms of the GNU General Public License as published by 8 | ;;; the Free Software Foundation, either version 3 of the License, or 9 | ;;; (at your option) any later version. 10 | ;;; 11 | ;;; This program is distributed in the hope that it will be useful, 12 | ;;; but WITHOUT ANY WARRANTY ; without even the implied warranty of 13 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 | ;;; GNU General Public License for more details. 15 | ;;; 16 | ;;; You should have received a copy of the GNU General Public License 17 | ;;; along with this program. If not, see . 18 | ;;; 19 | ;;; 20 | 21 | ;; 22 | ;; define I/O registers used in the program 23 | ;; 24 | .equ PORTB , 0x18 25 | .equ DDRB , 0x19 26 | .equ TCCR0A , 0x2A ; Timer/Counter control register A 27 | .equ TCCR0B , 0x33 ; Timer/Counter control register B 28 | .equ OCR0A , 0x29 ; Output Compare Register A 29 | .equ TIMSK , 0x39 ; Timer/Counter interrupt Mask Register 30 | .equ MCUCR , 0x35 ; MCU Control Register 31 | .equ GIMSK , 0x3b ; General Interrupt Mask Register 32 | .equ PCMSK , 0x15 ; Pin Change Mask Register 33 | .equ MCUSR , 0x34 ; MCU Status Register 34 | .equ WDTCR , 0x21 ; Watchdog Timer Control Register 35 | 36 | ;; 37 | ;; general file registry 38 | ;; 39 | .equ TMP , 0x10 ; r16 - temporary 40 | .equ TMP2 , 0x11 ; r17 - temporary 41 | .equ TICK_CNT , 0x12 ; r18 - tick counter 42 | .equ DISPLAY , 0x13 ; r19 - display 43 | .equ DISPLAY_BIT , 0x14 ; r20 - display bit 44 | .equ STATE , 0x15 ; r21 - pomodoro state 45 | .equ SECONDS , 0x16 ; r22 - seconds counter 46 | .equ MINUTES , 0x17 ; r23 - minutes counter 47 | .equ ANIM_FRAME , 0x18 ; r24 - current frame in anim 48 | .equ ANIM_FRAME_CNT , 0x19 ; r25 - frame in current anim 49 | .equ ANIM_TICK_CNT , 0x1a ; r26 - tick counter for animation frame 50 | .equ CURRENT_ANIM , 0x1b ; r27 - current animation 51 | .equ ZL , 0x1e ; r30 - low part of Z Register 52 | .equ ZH , 0x1f ; r31 - high part of Z Register 53 | 54 | ;; 55 | ;; SRAM pointers for led animations 56 | ;; 57 | .equ SRAM_ANIM_PAUSE , 0x60 ; address to pause animation 58 | .equ SRAM_ANIM_START , 0x6a ; address to start animation 59 | .equ SRAM_ANIM_DONE , 0x74 ; address to done animation 60 | 61 | ;; 62 | ;; pomodoro state enums 63 | ;; 64 | .equ STATE_STARTUP , 0x00 65 | .equ STATE_POMODOROS_1 , 0 66 | .equ STATE_PAUSE_1 , 1 67 | .equ STATE_POMODOROS_2 , 2 68 | .equ STATE_PAUSE_2 , 3 69 | .equ STATE_POMODOROS_3 , 4 70 | .equ STATE_PAUSE_3 , 5 71 | .equ STATE_POMODOROS_4 , 6 72 | .equ STATE_DONE , 7 73 | 74 | .text 75 | ;;; 76 | ;;; setup interrupt vectors trampolines 77 | ;;; 78 | main: .org 0x0000 79 | rjmp reset ; reset interrupt vector 80 | reti 81 | rjmp button ; pin change interrupt 82 | reti 83 | reti 84 | reti 85 | reti 86 | reti 87 | reti 88 | reti 89 | rjmp tick ; timer0 overflow interrupt vector 90 | reti 91 | reti 92 | reti 93 | reti 94 | 95 | ;;; 96 | ;;; button interrupt handler 97 | ;;; 98 | button: cpi STATE, 0x00 ; do nothing if we are in startup state 99 | brne . + 2 ; skip if not equal 100 | reti 101 | 102 | cpi STATE, (1 << STATE_DONE) ; soft reset program if we are in done state 103 | breq soft_reset 104 | 105 | mov TMP, STATE ; soft reset program if we are in a pomodoro state 106 | andi TMP, 0b10101010 107 | cpi TMP, 0x00 108 | breq soft_reset 109 | 110 | ;; 111 | ;; take care of transition from PAUSE to next POMODOROS state 112 | ;; 113 | clr SECONDS ; reset the pomodoro clock 114 | clr MINUTES 115 | clr ZL 116 | clr ZH 117 | 118 | ;; 119 | ;; advance to next pomodoro state and set corresponding 120 | ;; display of leds 121 | ;; 122 | lsl STATE ; advance state 123 | sbrs STATE, STATE_POMODOROS_2 ; check if we are in second pomodoro state 124 | brne . + 4 ; skip to next case if not equal 125 | ldi DISPLAY, 0b00000011 126 | reti 127 | 128 | sbrs STATE, STATE_POMODOROS_3 129 | brne . + 4 130 | ldi DISPLAY, 0b00000111 131 | reti 132 | 133 | sbrs STATE, STATE_POMODOROS_4 134 | brne . + 4 135 | ldi DISPLAY, 0b00001111 136 | reti 137 | 138 | ;; 139 | ;; unhandled state transition, shouldn't ever occur, just 140 | ;; a fench for following soft reset 141 | ;; 142 | reti 143 | 144 | ;; 145 | ;; generate a soft reset of the program using watchdog 146 | ;; 147 | soft_reset: ldi TMP, 0b00011000 ; soft reset the program using watchdog timeout 148 | out WDTCR, TMP 149 | reti 150 | 151 | 152 | ;;; 153 | ;;; render display and clock the pomodoro process 154 | ;;; 155 | ;;; this is called for each 5ms of time passed eg. 200 fps, 156 | ;;; each led is lit for 5ms at 200fps for lower current draw. 157 | ;;; 158 | ;;; for each 200 frames (1 second) clock the pomodoro process 159 | ;;; 160 | tick: mov TMP, DISPLAY ; get which led to display and its on/off state 161 | and TMP, DISPLAY_BIT 162 | ori TMP, 0b00010000 ; important to set other bits due to out instruction 163 | out PORTB, TMP 164 | 165 | lsl DISPLAY_BIT ; advance display of next led 166 | cpi DISPLAY_BIT, (1 << 4) ; check if we reached end of cylce 167 | brne . + 2 ; skip if not equal 168 | ldi DISPLAY_BIT, 0b00000001 ; reset cycle 169 | 170 | cpi ZL, 0x00 ; skip animation if not loaded into Z registry 171 | breq fin 172 | 173 | inc ANIM_TICK_CNT ; increase anim tick counter 174 | cpi ANIM_TICK_CNT, 25 175 | brne fin 176 | clr ANIM_TICK_CNT 177 | ld DISPLAY, Z+ ; read anim frame into display 178 | inc ANIM_FRAME ; increase current frame 179 | cp ANIM_FRAME, ANIM_FRAME_CNT ; reset current frame if end is reached 180 | brne fin 181 | clr ANIM_FRAME 182 | mov ZL, CURRENT_ANIM ; setup pause anim 183 | clr ZH 184 | ld ANIM_FRAME_CNT, Z+ ; get frame count and advance to first frame in anim 185 | 186 | 187 | fin: inc TICK_CNT ; increase clock tick counter 188 | cpi TICK_CNT, 200 ; check if counter reached 200, clock pomodoro timer 189 | breq clock 190 | reti 191 | 192 | ;;; 193 | ;;; clock the pomodoro process. 194 | ;;; 195 | ;;; this is called for each second passed 196 | ;;; 197 | clock: clr TICK_CNT ; reset TICK_CNT 198 | 199 | inc SECONDS ; increase pomodoro clock with one second 200 | cpi SECONDS, 60 ; if we reached 60 secs, increase MINUTES counter 201 | brne states 202 | inc MINUTES 203 | clr SECONDS 204 | 205 | ;; check which is our current state and call thee 206 | ;; appropiated handler for each state available 207 | states: cpi STATE, 0x00 ; check if in statup state 208 | breq startup 209 | 210 | cpi STATE, (1 << STATE_DONE) ; check if in done state 211 | breq done 212 | 213 | mov TMP, STATE ; check if in a pomodoro state 214 | andi TMP, 0b01010101 215 | cpi TMP, 0x00 216 | brne pomodoro 217 | 218 | mov TMP, STATE ; check if in a pause state 219 | andi TMP, 0b10101010 220 | cpi TMP, 0x00 221 | brne pause 222 | 223 | ;; 224 | ;; Unhandled states does nothing 225 | ;; 226 | reti 227 | 228 | ;; 229 | ;; process the clock for startup state and handle transition 230 | ;; to next state if time has been reached 231 | ;; 232 | startup: 233 | cpi SECONDS, 2 ; check if we have reached end of startup state 234 | breq . + 2 ; skip if equal 235 | reti 236 | clr SECONDS ; reset clock and advance to next state 237 | clr MINUTES 238 | ldi STATE, (1 << STATE_POMODOROS_1) ; setup next state, first pomodoro cycle 239 | ldi DISPLAY, 0b00000001 240 | clr ZH 241 | clr ZL 242 | reti 243 | 244 | ;; 245 | ;; process the clock for a pomodoros state and handle transition 246 | ;; to next pause state if time has been reached 247 | ;; 248 | pomodoro: 249 | cpi MINUTES, 25 ; check if we have reached end of pomodoro cycle 250 | breq . + 2 ; skip if equal 251 | reti 252 | clr SECONDS ; reset clock and advance to next state 253 | clr MINUTES 254 | lsl STATE ; advance to next pause state 255 | clr ZH ; setup pause led animation 256 | ldi CURRENT_ANIM, SRAM_ANIM_PAUSE 257 | cpi STATE, (1 << STATE_DONE) ; set done anim if last pomodoro 258 | brne . + 2 ; skip if equal 259 | ldi CURRENT_ANIM, SRAM_ANIM_DONE 260 | 261 | mov ZL, CURRENT_ANIM 262 | ld ANIM_FRAME_CNT, Z+ 263 | clr ANIM_FRAME 264 | clr ANIM_TICK_CNT 265 | reti 266 | 267 | ;; 268 | ;; external button is used to advance from pause state to next 269 | ;; 270 | pause: reti 271 | 272 | ;; 273 | ;; when done is reached, a soft reset is requires to restart a pomodoro cycle using button 274 | ;; 275 | done: reti 276 | 277 | 278 | 279 | ;;; 280 | ;;; reset and main loop 281 | ;;; 282 | ;;; initialization code, called upon program start and through reset 283 | ;;; switch and then enters the program main loop 284 | ;;; 285 | reset: wdr ; disable the watch dog reset flag 286 | clr TMP 287 | out MCUSR, TMP 288 | ldi TMP, 0b00011000 289 | out WDTCR, TMP 290 | ldi TMP, 0b00010000 291 | out WDTCR, TMP 292 | 293 | cli ; disable interrupts 294 | 295 | ;; 296 | ;; setup timer and interrupt 297 | ;; 298 | ldi TMP, 0b00000010 ; clear on compare match 299 | out TCCR0A, TMP 300 | ldi TMP, 0b00000100 ; set /256 prescaler 301 | out TCCR0B, TMP 302 | ldi TMP, 19 ; (F_CPU / prescaler) / 200fps 303 | out OCR0A, TMP 304 | ldi TMP, 0b00010000 ; enable output compare match A interrupt 305 | out TIMSK, TMP 306 | 307 | ;; 308 | ;; setup io ports 309 | ;; 310 | ldi TMP, 0b00001111 311 | out DDRB, TMP 312 | ldi TMP, 0b00010000 313 | out PORTB, TMP 314 | 315 | ;; 316 | ;; setup PCINT4 interrupt 317 | ;; 318 | ldi TMP, 0b00100000 ; enable pin change interrupt 319 | out GIMSK, TMP 320 | ldi TMP, 0b00010000 ; enable PCINT4 321 | out PCMSK, TMP 322 | 323 | ;; 324 | ;; setup sleep mode 325 | ;; 326 | ldi TMP, 0b00100000 327 | out MCUCR, TMP 328 | 329 | ;; 330 | ;; intialize program registers 331 | ;; 332 | clr DISPLAY 333 | ldi DISPLAY_BIT, 0b00000001 334 | clr TICK_CNT 335 | clr SECONDS 336 | clr MINUTES 337 | clr STATE 338 | 339 | ;; 340 | ;; store pause animation in SRAM 341 | ;; 342 | clr ZH 343 | ldi ZL, SRAM_ANIM_PAUSE 344 | ldi TMP , 0x06 ; frame count 345 | st Z+ , TMP 346 | ldi TMP , 0b00000001 347 | st Z+ , TMP 348 | ldi TMP , 0b00000010 349 | st Z+ , TMP 350 | ldi TMP , 0b00000100 351 | st Z+ , TMP 352 | ldi TMP , 0b00001000 353 | st Z+ , TMP 354 | ldi TMP , 0b00000100 355 | st Z+ , TMP 356 | ldi TMP , 0b00000010 357 | st Z+ , TMP 358 | 359 | ;; 360 | ;; store start anim in SRAM 361 | ;; 362 | clr ZH 363 | ldi ZL, SRAM_ANIM_START 364 | ldi TMP, 0x2 ; frame count 365 | st Z+ , TMP 366 | ldi TMP , 0b00001111 367 | st Z+ , TMP 368 | ldi TMP , 0b00000000 369 | st Z+ , TMP 370 | 371 | ;; 372 | ;; store done animation in SRAM 373 | ;; 374 | clr ZH 375 | ldi ZL, SRAM_ANIM_DONE 376 | ldi TMP , 0x06 ; frame count 377 | st Z+ , TMP 378 | ldi TMP , 0b00001110 379 | st Z+ , TMP 380 | ldi TMP , 0b00001101 381 | st Z+ , TMP 382 | ldi TMP , 0b00001011 383 | st Z+ , TMP 384 | ldi TMP , 0b00000111 385 | st Z+ , TMP 386 | ldi TMP , 0b00001011 387 | st Z+ , TMP 388 | ldi TMP , 0b00001101 389 | st Z+ , TMP 390 | 391 | ;; 392 | ;; setup animation for inital start state 393 | ;; 394 | clr ZH 395 | ldi CURRENT_ANIM, SRAM_ANIM_START 396 | mov ZL, CURRENT_ANIM 397 | ld ANIM_FRAME_CNT, Z+ 398 | clr ANIM_FRAME 399 | clr ANIM_TICK_CNT 400 | 401 | sei ; enable interrupts 402 | 403 | ;;; 404 | ;;; main loop 405 | ;;; 406 | loop: sleep ; enter sleep 407 | rjmp loop 408 | 409 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | --------------------------------------------------------------------------------