├── .gitignore ├── LICENSE ├── Makefile ├── bigchars.JPG ├── font.c ├── font.h ├── i2c.c ├── i2c.h ├── lcd.c ├── lcd.h ├── main.c ├── oled.jpg └── readme.md /.gitignore: -------------------------------------------------------------------------------- 1 | # Prerequisites 2 | *.d 3 | 4 | # Object files 5 | *.o 6 | *.ko 7 | *.obj 8 | *.elf 9 | 10 | # Linker output 11 | *.ilk 12 | *.map 13 | *.exp 14 | 15 | # Precompiled Headers 16 | *.gch 17 | *.pch 18 | 19 | # Libraries 20 | *.lib 21 | *.a 22 | *.la 23 | *.lo 24 | 25 | # Shared objects (inc. Windows DLLs) 26 | *.dll 27 | *.so 28 | *.so.* 29 | *.dylib 30 | 31 | # Executables 32 | *.exe 33 | *.out 34 | *.app 35 | *.i*86 36 | *.x86_64 37 | *.hex 38 | 39 | # Debug files 40 | *.dSYM/ 41 | *.su 42 | *.idb 43 | *.pdb 44 | 45 | # Kernel Module Compile Results 46 | *.mod* 47 | *.cmd 48 | .tmp_versions/ 49 | modules.order 50 | Module.symvers 51 | Mkfile.old 52 | dkms.conf 53 | -------------------------------------------------------------------------------- /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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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 | 635 | Copyright (C) 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 | Copyright (C) 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 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | # Hey Emacs, this is a -*- makefile -*- 2 | # 3 | # WinAVR makefile written by Eric B. Weddington, Jˆrg Wunsch, et al. 4 | # Released to the Public Domain 5 | # Please read the make user manual! 6 | # 7 | # Additional material for this makefile was submitted by: 8 | # Tim Henigan 9 | # Peter Fleury 10 | # Reiner Patommel 11 | # Sander Pool 12 | # Frederik Rouleau 13 | # Markus Pfaff 14 | # 15 | # On command line: 16 | # 17 | # make all = Make software. 18 | # 19 | # make clean = Clean out built project files. 20 | # 21 | # make coff = Convert ELF to AVR COFF (for use with AVR Studio 3.x or VMLAB). 22 | # 23 | # make extcoff = Convert ELF to AVR Extended COFF (for use with AVR Studio 24 | # 4.07 or greater). 25 | # 26 | # make program = Download the hex file to the device, using avrdude. Please 27 | # customize the avrdude settings below first! 28 | # 29 | # make filename.s = Just compile filename.c into the assembler code only 30 | # 31 | # To rebuild project do "make clean" then "make all". 32 | # 33 | 34 | # mth 2004/09 35 | # Differences from WinAVR 20040720 sample: 36 | # - DEPFLAGS according to Eric Weddingtion's fix (avrfreaks/gcc-forum) 37 | # - F_CPU Define in CFLAGS and AFLAGS 38 | 39 | 40 | # MCU name 41 | MCU = atmega328p 42 | 43 | # Main Oscillator Frequency 44 | # This is only used to define F_CPU in all assembler and c-sources. 45 | F_CPU = 16000000UL 46 | 47 | # Output format. (can be srec, ihex, binary) 48 | FORMAT = ihex 49 | 50 | # Target file name (without extension). 51 | TARGET = main 52 | 53 | 54 | # List C source files here. (C dependencies are automatically generated.) 55 | SRC = $(wildcard *.c) 56 | 57 | # List Assembler source files here. 58 | # Make them always end in a capital .S. Files ending in a lowercase .s 59 | # will not be considered source files but generated files (assembler 60 | # output from the compiler), and will be deleted upon "make clean"! 61 | # Even though the DOS/Win* filesystem matches both .s and .S the same, 62 | # it will preserve the spelling of the filenames, and gcc itself does 63 | # care about how the name is spelled on its command-line. 64 | ASRC = 65 | 66 | 67 | 68 | # Optimization level, can be [0, 1, 2, 3, s]. 69 | # 0 = turn off optimization. s = optimize for size. 70 | # (Note: 3 is not always the best optimization level. See avr-libc FAQ.) 71 | OPT = s 72 | 73 | # Debugging format. 74 | # Native formats for AVR-GCC's -g are stabs [default], or dwarf-2. 75 | # AVR (extended) COFF requires stabs, plus an avr-objcopy run. 76 | #DEBUG = stabs 77 | DEBUG = dwarf-2 78 | 79 | # List any extra directories to look for include files here. 80 | # Each directory must be seperated by a space. 81 | EXTRAINCDIRS = 82 | 83 | 84 | # Compiler flag to set the C Standard level. 85 | # c89 - "ANSI" C 86 | # gnu89 - c89 plus GCC extensions 87 | # c99 - ISO C99 standard (not yet fully implemented) 88 | # gnu99 - c99 plus GCC extensions 89 | CSTANDARD = -std=gnu99 90 | 91 | # Place -D or -U options here 92 | CDEFS = 93 | 94 | # Place -I options here 95 | CINCS = 96 | 97 | 98 | # Compiler flags. 99 | # -g*: generate debugging information 100 | # -O*: optimization level 101 | # -f...: tuning, see GCC manual and avr-libc documentation 102 | # -Wall...: warning level 103 | # -Wa,...: tell GCC to pass this to the assembler. 104 | # -adhlns...: create assembler listing 105 | CFLAGS = -g$(DEBUG) 106 | CFLAGS += $(CDEFS) $(CINCS) 107 | CFLAGS += -O$(OPT) 108 | CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 109 | CFLAGS += -Wall -Wstrict-prototypes 110 | CFLAGS += -Wa,-adhlns=$(<:.c=.lst) 111 | CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS)) 112 | CFLAGS += $(CSTANDARD) 113 | CFLAGS += -DF_CPU=$(F_CPU) 114 | #CFLAGS += -finput-charset=utf-8 -fexec-charset=iso-8859-15 115 | 116 | 117 | 118 | # Assembler flags. 119 | # -Wa,...: tell GCC to pass this to the assembler. 120 | # -ahlms: create listing 121 | # -gstabs: have the assembler create line number information; note that 122 | # for use in COFF files, additional information about filenames 123 | # and function names needs to be present in the assembler source 124 | # files -- see avr-libc docs [FIXME: not yet described there] 125 | ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs 126 | ASFLAGS += -DF_CPU=$(F_CPU) 127 | 128 | 129 | #Additional libraries. 130 | 131 | # Minimalistic printf version 132 | PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min 133 | 134 | # Floating point printf version (requires MATH_LIB = -lm below) 135 | PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt 136 | 137 | PRINTF_LIB = 138 | 139 | # Minimalistic scanf version 140 | SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min 141 | 142 | # Floating point + %[ scanf version (requires MATH_LIB = -lm below) 143 | SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt 144 | 145 | SCANF_LIB = 146 | 147 | MATH_LIB = -lm 148 | 149 | # External memory options 150 | 151 | # 64 KB of external RAM, starting after internal RAM (ATmega128!), 152 | # used for variables (.data/.bss) and heap (malloc()). 153 | #EXTMEMOPTS = -Wl,-Tdata=0x801100,--defsym=__heap_end=0x80ffff 154 | 155 | # 64 KB of external RAM, starting after internal RAM (ATmega128!), 156 | # only used for heap (malloc()). 157 | #EXTMEMOPTS = -Wl,--defsym=__heap_start=0x801100,--defsym=__heap_end=0x80ffff 158 | 159 | EXTMEMOPTS = 160 | 161 | # Linker flags. 162 | # -Wl,...: tell GCC to pass this to linker. 163 | # -Map: create map file 164 | # --cref: add cross reference to map file 165 | LDFLAGS = -Wl,-Map=$(TARGET).map,--cref 166 | LDFLAGS += $(EXTMEMOPTS) 167 | LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB) 168 | 169 | 170 | 171 | 172 | # Programming support using avrdude. Settings and variables. 173 | 174 | # Programming hardware: alf avr910 avrisp bascom bsd 175 | # dt006 pavr picoweb pony-stk200 sp12 stk200 stk500 176 | # 177 | # Type: avrdude -c ? 178 | # to get a full listing. 179 | # 180 | AVRDUDE_PROGRAMMER = avrispmkii 181 | 182 | # com1 = serial port. Use lpt1 to connect to parallel port. 183 | AVRDUDE_PORT = usb # programmer connected to serial device 184 | 185 | AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex 186 | AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep 187 | AVRDUDE_WRITE_FUSES = -U lfuse:w:0xFF:m -U hfuse:w:0xdf:m 188 | #-U efuse:w:0xff:m 189 | AVRDUDE_WRITE_LOCKS = -U lock:w:0f:m 190 | 191 | 192 | # Uncomment the following if you want avrdude's erase cycle counter. 193 | # Note that this counter needs to be initialized first using -Yn, 194 | # see avrdude manual. 195 | #AVRDUDE_ERASE_COUNTER = -y 196 | 197 | # Uncomment the following if you do /not/ wish a verification to be 198 | # performed after programming the device. 199 | #AVRDUDE_NO_VERIFY = -V 200 | 201 | # Increase verbosity level. Please use this when submitting bug 202 | # reports about avrdude. See 203 | # to submit bug reports. 204 | #AVRDUDE_VERBOSE = -v -v 205 | 206 | AVRDUDE_FLAGS = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER) 207 | AVRDUDE_FLAGS += $(AVRDUDE_NO_VERIFY) 208 | AVRDUDE_FLAGS += $(AVRDUDE_VERBOSE) 209 | AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER) 210 | AVRDUDE_FLAGS += -b 19200 211 | 212 | 213 | 214 | # --------------------------------------------------------------------------- 215 | 216 | # Define directories, if needed. 217 | # DIRAVR = c:/winavr/ #for Windows 218 | DIRAVR = /usr/local/avr/ #for Mac OS (crossavr) 219 | DIRAVRBIN = $(DIRAVR)/bin 220 | DIRAVRUTILS = $(DIRAVR)/utils/bin 221 | DIRINC = . 222 | DIRLIB = $(DIRAVR)/avr/lib 223 | 224 | 225 | # Define programs and commands. 226 | SHELL = sh 227 | CC = avr-gcc 228 | OBJCOPY = avr-objcopy 229 | OBJDUMP = avr-objdump 230 | SIZE = avr-size 231 | NM = avr-nm 232 | AVRDUDE = avrdude 233 | REMOVE = rm -f 234 | COPY = cp 235 | 236 | 237 | 238 | 239 | # Define Messages 240 | # English 241 | MSG_ERRORS_NONE = Errors: none 242 | MSG_BEGIN = -------- begin -------- 243 | MSG_END = -------- end -------- 244 | MSG_SIZE_BEFORE = Size before: 245 | MSG_SIZE_AFTER = Size after: 246 | MSG_COFF = Converting to AVR COFF: 247 | MSG_EXTENDED_COFF = Converting to AVR Extended COFF: 248 | MSG_FLASH = Creating load file for Flash: 249 | MSG_EEPROM = Creating load file for EEPROM: 250 | MSG_EXTENDED_LISTING = Creating Extended Listing: 251 | MSG_SYMBOL_TABLE = Creating Symbol Table: 252 | MSG_LINKING = Linking: 253 | MSG_COMPILING = Compiling: 254 | MSG_ASSEMBLING = Assembling: 255 | MSG_CLEANING = Cleaning project: 256 | 257 | 258 | 259 | 260 | # Define all object files. 261 | OBJ = $(SRC:.c=.o) $(ASRC:.S=.o) 262 | 263 | # Define all listing files. 264 | LST = $(ASRC:.S=.lst) $(SRC:.c=.lst) 265 | 266 | 267 | # Compiler flags to generate dependency files. 268 | ### GENDEPFLAGS = -Wp,-M,-MP,-MT,$(*F).o,-MF,.dep/$(@F).d 269 | GENDEPFLAGS = -MD -MP -MF .dep/$(@F).d 270 | 271 | # Combine all necessary flags and optional flags. 272 | # Add target processor to flags. 273 | ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) $(GENDEPFLAGS) 274 | ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS) 275 | 276 | 277 | 278 | 279 | 280 | # Default target. 281 | all: begin gccversion sizebefore build sizeafter finished end 282 | 283 | build: elf hex eep lss sym 284 | 285 | elf: $(TARGET).elf 286 | hex: $(TARGET).hex 287 | eep: $(TARGET).eep 288 | lss: $(TARGET).lss 289 | sym: $(TARGET).sym 290 | 291 | 292 | 293 | # Eye candy. 294 | # AVR Studio 3.x does not check make's exit code but relies on 295 | # the following magic strings to be generated by the compile job. 296 | begin: 297 | @echo 298 | @echo $(MSG_BEGIN) 299 | 300 | finished: 301 | @echo $(MSG_ERRORS_NONE) 302 | 303 | end: 304 | @echo $(MSG_END) 305 | @echo 306 | 307 | 308 | # Display size of file. 309 | HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex 310 | ELFSIZE = $(SIZE) -A $(TARGET).elf 311 | sizebefore: 312 | @if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); echo; fi 313 | 314 | sizeafter: 315 | @if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); echo; fi 316 | 317 | 318 | 319 | # Display compiler version information. 320 | gccversion : 321 | @$(CC) --version 322 | 323 | 324 | 325 | # Program the device. 326 | program: $(TARGET).hex $(TARGET).eep 327 | $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM) $(AVRDUDE_WRITE_FUSES) 328 | 329 | # Write only flash 330 | flash: $(TARGET).hex 331 | $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) 332 | 333 | # Write only eeprom 334 | eeprom: $(TARGET).eep 335 | $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_EEPROM) 336 | 337 | # Write fuses 338 | fuse: 339 | $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FUSES) 340 | 341 | # Write locks 342 | lock: 343 | $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_LOCKS) 344 | 345 | # Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB. 346 | COFFCONVERT=$(OBJCOPY) --debugging \ 347 | --change-section-address .data-0x800000 \ 348 | --change-section-address .bss-0x800000 \ 349 | --change-section-address .noinit-0x800000 \ 350 | --change-section-address .eeprom-0x810000 351 | 352 | 353 | coff: $(TARGET).elf 354 | @echo 355 | @echo $(MSG_COFF) $(TARGET).cof 356 | $(COFFCONVERT) -O coff-avr $< $(TARGET).cof 357 | 358 | 359 | extcoff: $(TARGET).elf 360 | @echo 361 | @echo $(MSG_EXTENDED_COFF) $(TARGET).cof 362 | $(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof 363 | 364 | 365 | 366 | # Create final output files (.hex, .eep) from ELF output file. 367 | %.hex: %.elf 368 | @echo 369 | @echo $(MSG_FLASH) $@ 370 | $(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@ 371 | 372 | %.eep: %.elf 373 | @echo 374 | @echo $(MSG_EEPROM) $@ 375 | -$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \ 376 | --change-section-lma .eeprom=0 -O $(FORMAT) $< $@ 377 | 378 | # Create extended listing file from ELF output file. 379 | %.lss: %.elf 380 | @echo 381 | @echo $(MSG_EXTENDED_LISTING) $@ 382 | $(OBJDUMP) -h -S $< > $@ 383 | 384 | # Create a symbol table from ELF output file. 385 | %.sym: %.elf 386 | @echo 387 | @echo $(MSG_SYMBOL_TABLE) $@ 388 | $(NM) -n $< > $@ 389 | 390 | 391 | 392 | # Link: create ELF output file from object files. 393 | .SECONDARY : $(TARGET).elf 394 | .PRECIOUS : $(OBJ) 395 | %.elf: $(OBJ) 396 | @echo 397 | @echo $(MSG_LINKING) $@ 398 | $(CC) $(ALL_CFLAGS) $(OBJ) --output $@ $(LDFLAGS) 399 | 400 | 401 | # Compile: create object files from C source files. 402 | %.o : %.c 403 | @echo 404 | @echo $(MSG_COMPILING) $< 405 | $(CC) -c $(ALL_CFLAGS) $< -o $@ 406 | 407 | 408 | # Compile: create assembler files from C source files. 409 | %.s : %.c 410 | $(CC) -S $(ALL_CFLAGS) $< -o $@ 411 | 412 | 413 | # Assemble: create object files from assembler source files. 414 | %.o : %.S 415 | @echo 416 | @echo $(MSG_ASSEMBLING) $< 417 | $(CC) -c $(ALL_ASFLAGS) $< -o $@ 418 | 419 | 420 | 421 | # Target: clean project. 422 | clean: begin clean_list finished end 423 | 424 | clean_list : 425 | @echo 426 | @echo $(MSG_CLEANING) 427 | $(REMOVE) $(TARGET).hex 428 | $(REMOVE) $(TARGET).eep 429 | $(REMOVE) $(TARGET).obj 430 | $(REMOVE) $(TARGET).cof 431 | $(REMOVE) $(TARGET).elf 432 | $(REMOVE) $(TARGET).map 433 | $(REMOVE) $(TARGET).obj 434 | $(REMOVE) $(TARGET).a90 435 | $(REMOVE) $(TARGET).sym 436 | $(REMOVE) $(TARGET).lnk 437 | $(REMOVE) $(TARGET).lss 438 | $(REMOVE) $(OBJ) 439 | $(REMOVE) $(LST) 440 | $(REMOVE) $(SRC:.c=.s) 441 | $(REMOVE) $(SRC:.c=.d) 442 | $(REMOVE) .dep/* 443 | 444 | 445 | 446 | # Include the dependency files. 447 | -include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*) 448 | 449 | 450 | # Listing of phony targets. 451 | .PHONY : all begin finish end sizebefore sizeafter gccversion \ 452 | build elf hex eep lss sym coff extcoff \ 453 | clean clean_list program 454 | 455 | -------------------------------------------------------------------------------- /bigchars.JPG: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Sylaina/oled-display/d826069f1f61c7694b2b06e32c3939e53e93b031/bigchars.JPG -------------------------------------------------------------------------------- /font.c: -------------------------------------------------------------------------------- 1 | /* 2 | * font.c 3 | * i2c 4 | * 5 | * Created by Michael Köhler on 16.09.18. 6 | * Copyright 2018 Skie-Systems. All rights reserved. 7 | * 8 | */ 9 | #include "font.h" 10 | 11 | const char ssd1306oled_font[][6] PROGMEM = { 12 | {0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // sp 13 | {0x00, 0x00, 0x00, 0x2f, 0x00, 0x00}, // ! 14 | {0x00, 0x00, 0x07, 0x00, 0x07, 0x00}, // " 15 | {0x00, 0x14, 0x7f, 0x14, 0x7f, 0x14}, // # 16 | {0x00, 0x24, 0x2a, 0x7f, 0x2a, 0x12}, // $ 17 | {0x00, 0x62, 0x64, 0x08, 0x13, 0x23}, // % 18 | {0x00, 0x36, 0x49, 0x55, 0x22, 0x50}, // & 19 | {0x00, 0x00, 0x05, 0x03, 0x00, 0x00}, // ' 20 | {0x00, 0x00, 0x1c, 0x22, 0x41, 0x00}, // ( 21 | {0x00, 0x00, 0x41, 0x22, 0x1c, 0x00}, // ) 22 | {0x00, 0x14, 0x08, 0x3E, 0x08, 0x14}, // * 23 | {0x00, 0x08, 0x08, 0x3E, 0x08, 0x08}, // + 24 | {0x00, 0x00, 0x00, 0xA0, 0x60, 0x00}, // , 25 | {0x00, 0x08, 0x08, 0x08, 0x08, 0x08}, // - 26 | {0x00, 0x00, 0x60, 0x60, 0x00, 0x00}, // . 27 | {0x00, 0x20, 0x10, 0x08, 0x04, 0x02}, // / 28 | {0x00, 0x3E, 0x51, 0x49, 0x45, 0x3E}, // 0 29 | {0x00, 0x00, 0x42, 0x7F, 0x40, 0x00}, // 1 30 | {0x00, 0x42, 0x61, 0x51, 0x49, 0x46}, // 2 31 | {0x00, 0x21, 0x41, 0x45, 0x4B, 0x31}, // 3 32 | {0x00, 0x18, 0x14, 0x12, 0x7F, 0x10}, // 4 33 | {0x00, 0x27, 0x45, 0x45, 0x45, 0x39}, // 5 34 | {0x00, 0x3C, 0x4A, 0x49, 0x49, 0x30}, // 6 35 | {0x00, 0x01, 0x71, 0x09, 0x05, 0x03}, // 7 36 | {0x00, 0x36, 0x49, 0x49, 0x49, 0x36}, // 8 37 | {0x00, 0x06, 0x49, 0x49, 0x29, 0x1E}, // 9 38 | {0x00, 0x00, 0x36, 0x36, 0x00, 0x00}, // : 39 | {0x00, 0x00, 0x56, 0x36, 0x00, 0x00}, // ; 40 | {0x00, 0x08, 0x14, 0x22, 0x41, 0x00}, // < 41 | {0x00, 0x14, 0x14, 0x14, 0x14, 0x14}, // = 42 | {0x00, 0x00, 0x41, 0x22, 0x14, 0x08}, // > 43 | {0x00, 0x02, 0x01, 0x51, 0x09, 0x06}, // ? 44 | {0x00, 0x32, 0x49, 0x59, 0x51, 0x3E}, // @ 45 | {0x00, 0x7C, 0x12, 0x11, 0x12, 0x7C}, // A 46 | {0x00, 0x7F, 0x49, 0x49, 0x49, 0x36}, // B 47 | {0x00, 0x3E, 0x41, 0x41, 0x41, 0x22}, // C 48 | {0x00, 0x7F, 0x41, 0x41, 0x22, 0x1C}, // D 49 | {0x00, 0x7F, 0x49, 0x49, 0x49, 0x41}, // E 50 | {0x00, 0x7F, 0x09, 0x09, 0x09, 0x01}, // F 51 | {0x00, 0x3E, 0x41, 0x49, 0x49, 0x7A}, // G 52 | {0x00, 0x7F, 0x08, 0x08, 0x08, 0x7F}, // H 53 | {0x00, 0x00, 0x41, 0x7F, 0x41, 0x00}, // I 54 | {0x00, 0x20, 0x40, 0x41, 0x3F, 0x01}, // J 55 | {0x00, 0x7F, 0x08, 0x14, 0x22, 0x41}, // K 56 | {0x00, 0x7F, 0x40, 0x40, 0x40, 0x40}, // L 57 | {0x00, 0x7F, 0x02, 0x0C, 0x02, 0x7F}, // M 58 | {0x00, 0x7F, 0x04, 0x08, 0x10, 0x7F}, // N 59 | {0x00, 0x3E, 0x41, 0x41, 0x41, 0x3E}, // O 60 | {0x00, 0x7F, 0x09, 0x09, 0x09, 0x06}, // P 61 | {0x00, 0x3E, 0x41, 0x51, 0x21, 0x5E}, // Q 62 | {0x00, 0x7F, 0x09, 0x19, 0x29, 0x46}, // R 63 | {0x00, 0x46, 0x49, 0x49, 0x49, 0x31}, // S 64 | {0x00, 0x01, 0x01, 0x7F, 0x01, 0x01}, // T 65 | {0x00, 0x3F, 0x40, 0x40, 0x40, 0x3F}, // U 66 | {0x00, 0x1F, 0x20, 0x40, 0x20, 0x1F}, // V 67 | {0x00, 0x3F, 0x40, 0x38, 0x40, 0x3F}, // W 68 | {0x00, 0x63, 0x14, 0x08, 0x14, 0x63}, // X 69 | {0x00, 0x07, 0x08, 0x70, 0x08, 0x07}, // Y 70 | {0x00, 0x61, 0x51, 0x49, 0x45, 0x43}, // Z 71 | {0x00, 0x00, 0x7F, 0x41, 0x41, 0x00}, // [ 72 | {0x00, 0x55, 0x2A, 0x55, 0x2A, 0x55}, // backslash 73 | {0x00, 0x00, 0x41, 0x41, 0x7F, 0x00}, // ] 74 | {0x00, 0x04, 0x02, 0x01, 0x02, 0x04}, // ^ 75 | {0x00, 0x40, 0x40, 0x40, 0x40, 0x40}, // _ 76 | {0x00, 0x00, 0x01, 0x02, 0x04, 0x00}, // ' 77 | {0x00, 0x20, 0x54, 0x54, 0x54, 0x78}, // a 78 | {0x00, 0x7F, 0x48, 0x44, 0x44, 0x38}, // b 79 | {0x00, 0x38, 0x44, 0x44, 0x44, 0x20}, // c 80 | {0x00, 0x38, 0x44, 0x44, 0x48, 0x7F}, // d 81 | {0x00, 0x38, 0x54, 0x54, 0x54, 0x18}, // e 82 | {0x00, 0x08, 0x7E, 0x09, 0x01, 0x02}, // f 83 | {0x00, 0x18, 0xA4, 0xA4, 0xA4, 0x7C}, // g 84 | {0x00, 0x7F, 0x08, 0x04, 0x04, 0x78}, // h 85 | {0x00, 0x00, 0x44, 0x7D, 0x40, 0x00}, // i 86 | {0x00, 0x40, 0x80, 0x84, 0x7D, 0x00}, // j 87 | {0x00, 0x7F, 0x10, 0x28, 0x44, 0x00}, // k 88 | {0x00, 0x00, 0x41, 0x7F, 0x40, 0x00}, // l 89 | {0x00, 0x7C, 0x04, 0x18, 0x04, 0x78}, // m 90 | {0x00, 0x7C, 0x08, 0x04, 0x04, 0x78}, // n 91 | {0x00, 0x38, 0x44, 0x44, 0x44, 0x38}, // o 92 | {0x00, 0xFC, 0x24, 0x24, 0x24, 0x18}, // p 93 | {0x00, 0x18, 0x24, 0x24, 0x18, 0xFC}, // q 94 | {0x00, 0x7C, 0x08, 0x04, 0x04, 0x08}, // r 95 | {0x00, 0x48, 0x54, 0x54, 0x54, 0x20}, // s 96 | {0x00, 0x04, 0x3F, 0x44, 0x40, 0x20}, // t 97 | {0x00, 0x3C, 0x40, 0x40, 0x20, 0x7C}, // u 98 | {0x00, 0x1C, 0x20, 0x40, 0x20, 0x1C}, // v 99 | {0x00, 0x3C, 0x40, 0x30, 0x40, 0x3C}, // w 100 | {0x00, 0x44, 0x28, 0x10, 0x28, 0x44}, // x 101 | {0x00, 0x1C, 0xA0, 0xA0, 0xA0, 0x7C}, // y 102 | {0x00, 0x44, 0x64, 0x54, 0x4C, 0x44}, // z 103 | {0x00, 0x00, 0x08, 0x77, 0x41, 0x00}, // { 104 | {0x00, 0x00, 0x00, 0x63, 0x00, 0x00}, // ¦ 105 | {0x00, 0x00, 0x41, 0x77, 0x08, 0x00}, // } 106 | {0x00, 0x08, 0x04, 0x08, 0x08, 0x04}, // ~ 107 | /* end of normal char-set */ 108 | /* put your own signs/chars here, edit special_char too */ 109 | /* be sure that your first special char stand here */ 110 | {0x00, 0x3A, 0x40, 0x40, 0x20, 0x7A}, // ü, !!! Important: this must be special_char[0] !!! 111 | {0x00, 0x3D, 0x40, 0x40, 0x40, 0x3D}, // Ü 112 | {0x00, 0x21, 0x54, 0x54, 0x54, 0x79}, // ä 113 | {0x00, 0x7D, 0x12, 0x11, 0x12, 0x7D}, // Ä 114 | {0x00, 0x39, 0x44, 0x44, 0x44, 0x39}, // ö 115 | {0x00, 0x3D, 0x42, 0x42, 0x42, 0x3D}, // Ö 116 | {0x00, 0x02, 0x05, 0x02, 0x00, 0x00}, // ° 117 | {0x00, 0x7E, 0x01, 0x49, 0x55, 0x73}, // ß 118 | {0x00, 0x7C, 0x10, 0x10, 0x08, 0x1C}, // µ 119 | {0x00, 0x30, 0x48, 0x20, 0x48, 0x30}, // ω 120 | {0x00, 0x5C, 0x62, 0x02, 0x62, 0x5C} // Ω 121 | }; 122 | const char special_char[][2] PROGMEM = { 123 | // define position of special char in font 124 | // {special char, position in font} 125 | // be sure that last element of this 126 | // array are {0xff, 0xff} and first element 127 | // are {first special char, first element after normal char-set in font} 128 | {'ü', 95}, // special_char[0] 129 | {'Ü', 96}, 130 | {'ä', 97}, 131 | {'Ä', 98}, 132 | {'ö', 99}, 133 | {'Ö', 100}, 134 | {'°', 101}, 135 | {'ß', 102}, 136 | {'µ', 103}, 137 | {'ω', 104}, 138 | {'Ω', 105}, 139 | {0xff, 0xff} // end of table special_char 140 | }; 141 | -------------------------------------------------------------------------------- /font.h: -------------------------------------------------------------------------------- 1 | /* 2 | * font.h 3 | * i2c 4 | * 5 | * Created by Michael Köhler on 13.09.18. 6 | * Copyright 2018 Skie-Systems. All rights reserved. 7 | * 8 | */ 9 | #ifndef _font_h_ 10 | #define _font_h_ 11 | #include 12 | 13 | extern const char ssd1306oled_font[][6] PROGMEM; 14 | extern const char special_char[][2] PROGMEM; 15 | 16 | #endif 17 | -------------------------------------------------------------------------------- /i2c.c: -------------------------------------------------------------------------------- 1 | // 2 | // i2c.c 3 | // i2c 4 | // 5 | // Created by Michael Köhler on 09.10.17. 6 | // 7 | // 8 | 9 | #include "i2c.h" 10 | 11 | #if defined (__AVR_ATmega328__) || defined(__AVR_ATmega328P__) || \ 12 | defined(__AVR_ATmega168P__) || defined(__AVR_ATmega168PA__) || \ 13 | defined(__AVR_ATmega88P__) || \ 14 | defined(__AVR_ATmega8__) || \ 15 | defined(__AVR_ATmega48P__) || \ 16 | defined(__AVR_ATmega1284P__) || \ 17 | defined (__AVR_ATmega324A__) || defined (__AVR_ATmega324P__) || defined (__AVR_ATmega324PA__) || \ 18 | defined (__AVR_ATmega644__) || defined (__AVR_ATmega644A__) || defined (__AVR_ATmega644P__) || defined (__AVR_ATmega644PA__) || \ 19 | defined (__AVR_ATmega1284P__) || \ 20 | defined (__AVR_ATmega2560__) 21 | #if PSC_I2C != 1 && PSC_I2C != 4 && PSC_I2C != 16 && PSC_I2C != 64 22 | #error "Wrong prescaler for TWI !" 23 | #elif SET_TWBR < 0 || SET_TWBR > 255 24 | #error "TWBR out of range, change PSC_I2C or F_I2C !" 25 | #endif 26 | 27 | uint8_t I2C_ErrorCode; 28 | /********************************************** 29 | Public Function: i2c_init 30 | 31 | Purpose: Initialise TWI/I2C interface 32 | 33 | Input Parameter: none 34 | 35 | Return Value: none 36 | **********************************************/ 37 | void i2c_init(void){ 38 | // set clock 39 | switch (PSC_I2C) { 40 | case 4: 41 | TWSR = 0x1; 42 | break; 43 | case 16: 44 | TWSR = 0x2; 45 | break; 46 | case 64: 47 | TWSR = 0x3; 48 | break; 49 | default: 50 | TWSR = 0x00; 51 | break; 52 | } 53 | TWBR = (uint8_t)SET_TWBR; 54 | // enable 55 | TWCR = (1 << TWEN); 56 | } 57 | /********************************************** 58 | Public Function: i2c_start 59 | 60 | Purpose: Start TWI/I2C interface 61 | 62 | Input Parameter: 63 | - uint8_t i2c_addr: Adress of reciever 64 | 65 | Return Value: none 66 | **********************************************/ 67 | void i2c_start(uint8_t i2c_addr){ 68 | // i2c start 69 | TWCR = (1 << TWINT)|(1 << TWSTA)|(1 << TWEN); 70 | uint16_t timeout = F_CPU/F_I2C*2.0; 71 | while((TWCR & (1 << TWINT)) == 0 && 72 | timeout !=0){ 73 | timeout--; 74 | if(timeout == 0){ 75 | I2C_ErrorCode |= (1 << I2C_START); 76 | return; 77 | } 78 | }; 79 | // send adress 80 | TWDR = i2c_addr; 81 | TWCR = (1 << TWINT)|( 1 << TWEN); 82 | timeout = F_CPU/F_I2C*2.0; 83 | while((TWCR & (1 << TWINT)) == 0 && 84 | timeout !=0){ 85 | timeout--; 86 | if(timeout == 0){ 87 | I2C_ErrorCode |= (1 << I2C_SENDADRESS); 88 | return; 89 | } 90 | }; 91 | } 92 | /********************************************** 93 | Public Function: i2c_stop 94 | 95 | Purpose: Stop TWI/I2C interface 96 | 97 | Input Parameter: none 98 | 99 | Return Value: none 100 | **********************************************/ 101 | void i2c_stop(void){ 102 | // i2c stop 103 | TWCR = (1 << TWINT)|(1 << TWSTO)|(1 << TWEN); 104 | } 105 | /********************************************** 106 | Public Function: i2c_byte 107 | 108 | Purpose: Send byte at TWI/I2C interface 109 | 110 | Input Parameter: 111 | - uint8_t byte: Byte to send to reciever 112 | 113 | Return Value: none 114 | **********************************************/ 115 | void i2c_byte(uint8_t byte){ 116 | TWDR = byte; 117 | TWCR = (1 << TWINT)|( 1 << TWEN); 118 | uint16_t timeout = F_CPU/F_I2C*2.0; 119 | while((TWCR & (1 << TWINT)) == 0 && 120 | timeout !=0){ 121 | timeout--; 122 | if(timeout == 0){ 123 | I2C_ErrorCode |= (1 << I2C_BYTE); 124 | return; 125 | } 126 | }; 127 | } 128 | /********************************************** 129 | Public Function: i2c_readAck 130 | 131 | Purpose: read acknowledge from TWI/I2C Interface 132 | 133 | Input Parameter: none 134 | 135 | Return Value: uint8_t 136 | - TWDR: recieved value at TWI/I2C-Interface, 0 at timeout 137 | - 0: Error at read 138 | **********************************************/ 139 | uint8_t i2c_readAck(void){ 140 | TWCR = (1< 22 | #include 23 | 24 | extern uint8_t I2C_ErrorCode; // variable for communication error at twi 25 | // ckeck it in your code 26 | // 0 means no error 27 | // define bits in I2C-ErrorCode: 28 | #define I2C_START 0 // bit 0: timeout start-condition 29 | #define I2C_SENDADRESS 1 // bit 0: timeout device-adress 30 | #define I2C_BYTE 2 // bit 0: timeout byte-transmission 31 | #define I2C_READACK 3 // bit 0: timeout read acknowledge 32 | #define I2C_READNACK 4 // bit 0: timeout read nacknowledge 33 | 34 | void i2c_init(void); // init hw-i2c 35 | void i2c_start(uint8_t i2c_addr); // send i2c_start_condition 36 | void i2c_stop(void); // send i2c_stop_condition 37 | void i2c_byte(uint8_t byte); // send data_byte 38 | 39 | uint8_t i2c_readAck(void); // read byte with ACK 40 | uint8_t i2c_readNAck(void); // read byte with NACK 41 | 42 | #ifdef __cplusplus 43 | } 44 | #endif 45 | 46 | #endif /* i2c_h */ 47 | -------------------------------------------------------------------------------- /lcd.c: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of lcd library for ssd1306/ssd1309/sh1106 oled-display. 3 | * 4 | * lcd library for ssd1306/ssd1309/sh1106 oled-display is free software: you can redistribute it and/or modify 5 | * it under the terms of the GNU General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or any later version. 7 | * 8 | * lcd library for ssd1306/ssd1309/sh1106 oled-display is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with Foobar. If not, see . 15 | * 16 | * Diese Datei ist Teil von lcd library for ssd1306/ssd1309/sh1106 oled-display. 17 | * 18 | * lcd library for ssd1306/ssd1309/sh1106 oled-display ist Freie Software: Sie können es unter den Bedingungen 19 | * der GNU General Public License, wie von der Free Software Foundation, 20 | * Version 3 der Lizenz oder jeder späteren 21 | * veröffentlichten Version, weiterverbreiten und/oder modifizieren. 22 | * 23 | * lcd library for ssd1306/ssd1309/sh1106 oled-display wird in der Hoffnung, dass es nützlich sein wird, aber 24 | * OHNE JEDE GEWÄHRLEISTUNG, bereitgestellt; sogar ohne die implizite 25 | * Gewährleistung der MARKTFÄHIGKEIT oder EIGNUNG FÜR EINEN BESTIMMTEN ZWECK. 26 | * Siehe die GNU General Public License für weitere Details. 27 | * 28 | * Sie sollten eine Kopie der GNU General Public License zusammen mit diesem 29 | * Programm erhalten haben. Wenn nicht, siehe . 30 | * 31 | * lcd.h 32 | * 33 | * Created by Michael Köhler on 22.12.16. 34 | * Copyright 2016 Skie-Systems. All rights reserved. 35 | * 36 | * lib for OLED-Display with ssd1306/ssd1309/sh1106-Controller 37 | * first dev-version only for I2C-Connection 38 | * at ATMega328P like Arduino Uno 39 | * 40 | * at GRAPHICMODE lib needs static SRAM for display: 41 | * DISPLAY-WIDTH * DISPLAY-HEIGHT + 2 bytes 42 | * 43 | * at TEXTMODE lib need static SRAM for display: 44 | * 2 bytes (cursorPosition) 45 | */ 46 | 47 | #include "lcd.h" 48 | #include "font.h" 49 | #include 50 | 51 | #if defined SPI 52 | #include 53 | #endif 54 | 55 | static struct { 56 | uint8_t x; 57 | uint8_t y; 58 | } cursorPosition; 59 | 60 | static uint8_t charMode = NORMALSIZE; 61 | #if defined GRAPHICMODE 62 | #include 63 | static uint8_t displayBuffer[DISPLAY_HEIGHT/8][DISPLAY_WIDTH]; 64 | #elif defined TEXTMODE 65 | #else 66 | #error "No valid displaymode! Refer lcd.h" 67 | #endif 68 | 69 | 70 | const uint8_t init_sequence [] PROGMEM = { // Initialization Sequence 71 | LCD_DISP_OFF, // Display OFF (sleep mode) 72 | 0x20, 0b00, // Set Memory Addressing Mode 73 | // 00=Horizontal Addressing Mode; 01=Vertical Addressing Mode; 74 | // 10=Page Addressing Mode (RESET); 11=Invalid 75 | 0xB0, // Set Page Start Address for Page Addressing Mode, 0-7 76 | 0xC8, // Set COM Output Scan Direction 77 | 0x00, // --set low column address 78 | 0x10, // --set high column address 79 | 0x40, // --set start line address 80 | 0x81, 0x3F, // Set contrast control register 81 | 0xA1, // Set Segment Re-map. A0=address mapped; A1=address 127 mapped. 82 | 0xA6, // Set display mode. A6=Normal; A7=Inverse 83 | 0xA8, DISPLAY_HEIGHT-1, // Set multiplex ratio(1 to 64) 84 | 0xA4, // Output RAM to Display 85 | // 0xA4=Output follows RAM content; 0xA5,Output ignores RAM content 86 | 0xD3, 0x00, // Set display offset. 00 = no offset 87 | 0xD5, // --set display clock divide ratio/oscillator frequency 88 | 0xF0, // --set divide ratio 89 | 0xD9, 0x22, // Set pre-charge period 90 | // Set com pins hardware configuration 91 | #if DISPLAY_HEIGHT==64 92 | 0xDA, 0x12, 93 | #elif DISPLAY_HEIGHT==32 94 | 0xDA, 0x02, 95 | #endif 96 | 0xDB, // --set vcomh 97 | 0x20, // 0x20,0.77xVcc 98 | 0x8D, 0x14, // Set DC-DC enable 99 | 100 | 101 | }; 102 | #pragma mark LCD COMMUNICATION 103 | void lcd_command(uint8_t cmd[], uint8_t size) { 104 | #if defined I2C 105 | i2c_start((LCD_I2C_ADR << 1) | 0); 106 | i2c_byte(0x00); // 0x00 for command, 0x40 for data 107 | for (uint8_t i=0; i (DISPLAY_WIDTH) || y > (DISPLAY_HEIGHT/8-1)) return;// out of display 168 | cursorPosition.x=x; 169 | cursorPosition.y=y; 170 | #if defined (SSD1306) || defined (SSD1309) 171 | uint8_t commandSequence[] = {0xb0+y, 0x21, x, 0x7f}; 172 | #elif defined SH1106 173 | uint8_t commandSequence[] = {0xb0+y, 0x21, 0x00+((2+x) & (0x0f)), 0x10+( ((2+x) & (0xf0)) >> 4 ), 0x7f}; 174 | #endif 175 | lcd_command(commandSequence, sizeof(commandSequence)); 176 | } 177 | void lcd_clrscr(void){ 178 | #ifdef GRAPHICMODE 179 | for (uint8_t i = 0; i < DISPLAY_HEIGHT/8; i++){ 180 | memset(displayBuffer[i], 0x00, sizeof(displayBuffer[i])); 181 | lcd_gotoxy(0,i); 182 | lcd_data(displayBuffer[i], sizeof(displayBuffer[i])); 183 | } 184 | #elif defined TEXTMODE 185 | uint8_t displayBuffer[DISPLAY_WIDTH]; 186 | memset(displayBuffer, 0x00, sizeof(displayBuffer)); 187 | for (uint8_t i = 0; i < DISPLAY_HEIGHT/8; i++){ 188 | lcd_gotoxy(0,i); 189 | lcd_data(displayBuffer, sizeof(displayBuffer)); 190 | } 191 | #endif 192 | lcd_home(); 193 | } 194 | void lcd_home(void){ 195 | lcd_gotoxy(0, 0); 196 | } 197 | void lcd_invert(uint8_t invert){ 198 | uint8_t commandSequence[1]; 199 | if (invert != YES) { 200 | commandSequence[0] = 0xA6; 201 | } else { 202 | commandSequence[0] = 0xA7; 203 | } 204 | lcd_command(commandSequence, 1); 205 | } 206 | void lcd_sleep(uint8_t sleep){ 207 | uint8_t commandSequence[1]; 208 | if (sleep != YES) { 209 | commandSequence[0] = 0xAF; 210 | } else { 211 | commandSequence[0] = 0xAE; 212 | } 213 | lcd_command(commandSequence, 1); 214 | } 215 | void lcd_set_contrast(uint8_t contrast){ 216 | uint8_t commandSequence[2] = {0x81, contrast}; 217 | lcd_command(commandSequence, sizeof(commandSequence)); 218 | } 219 | void lcd_putc(char c){ 220 | switch (c) { 221 | case '\b': 222 | // backspace 223 | lcd_gotoxy(cursorPosition.x-charMode, cursorPosition.y); 224 | lcd_putc(' '); 225 | lcd_gotoxy(cursorPosition.x-charMode, cursorPosition.y); 226 | break; 227 | case '\t': 228 | // tab 229 | if( (cursorPosition.x+charMode*4) < (DISPLAY_WIDTH/ sizeof(FONT[0])-charMode*4) ){ 230 | lcd_gotoxy(cursorPosition.x+charMode*4, cursorPosition.y); 231 | }else{ 232 | lcd_gotoxy(DISPLAY_WIDTH/ sizeof(FONT[0]), cursorPosition.y); 233 | } 234 | break; 235 | case '\n': 236 | // linefeed 237 | if(cursorPosition.y < (DISPLAY_HEIGHT/8-1)){ 238 | lcd_gotoxy(cursorPosition.x, cursorPosition.y+charMode); 239 | } 240 | break; 241 | case '\r': 242 | // carrige return 243 | lcd_gotoxy(0, cursorPosition.y); 244 | break; 245 | default: 246 | // char doesn't fit in line 247 | if( (cursorPosition.x >= DISPLAY_WIDTH-sizeof(FONT[0])) || (c < ' ') ) break; 248 | // mapping char 249 | c -= ' '; 250 | if (c >= pgm_read_byte(&special_char[0][1]) ) { 251 | char temp = c; 252 | c = 0xff; 253 | for (uint8_t i=0; pgm_read_byte(&special_char[i][1]) != 0xff; i++) { 254 | if ( pgm_read_byte(&special_char[i][0])-' ' == temp ) { 255 | c = pgm_read_byte(&special_char[i][1]); 256 | break; 257 | } 258 | } 259 | if ( c == 0xff ) break; 260 | } 261 | // print char at display 262 | #ifdef GRAPHICMODE 263 | if (charMode == DOUBLESIZE) { 264 | uint16_t doubleChar[sizeof(FONT[0])]; 265 | uint8_t dChar; 266 | if ((cursorPosition.x+2*sizeof(FONT[0]))>DISPLAY_WIDTH) break; 267 | 268 | for (uint8_t i=0; i < sizeof(FONT[0]); i++) { 269 | doubleChar[i] = 0; 270 | dChar = pgm_read_byte(&(FONT[(uint8_t)c][i])); 271 | for (uint8_t j=0; j<8; j++) { 272 | if ((dChar & (1 << j))) { 273 | doubleChar[i] |= (1 << (j*2)); 274 | doubleChar[i] |= (1 << ((j*2)+1)); 275 | } 276 | } 277 | } 278 | for (uint8_t i = 0; i < sizeof(FONT[0]); i++) 279 | { 280 | // load bit-pattern from flash 281 | displayBuffer[cursorPosition.y+1][cursorPosition.x+(2*i)] = doubleChar[i] >> 8; 282 | displayBuffer[cursorPosition.y+1][cursorPosition.x+(2*i)+1] = doubleChar[i] >> 8; 283 | displayBuffer[cursorPosition.y][cursorPosition.x+(2*i)] = doubleChar[i] & 0xff; 284 | displayBuffer[cursorPosition.y][cursorPosition.x+(2*i)+1] = doubleChar[i] & 0xff; 285 | } 286 | cursorPosition.x += sizeof(FONT[0])*2; 287 | } else { 288 | if ((cursorPosition.x+sizeof(FONT[0]))>DISPLAY_WIDTH) break; 289 | 290 | for (uint8_t i = 0; i < sizeof(FONT[0]); i++) 291 | { 292 | // load bit-pattern from flash 293 | displayBuffer[cursorPosition.y][cursorPosition.x+i] =pgm_read_byte(&(FONT[(uint8_t)c][i])); 294 | } 295 | cursorPosition.x += sizeof(FONT[0]); 296 | } 297 | #elif defined TEXTMODE 298 | if (charMode == DOUBLESIZE) { 299 | uint16_t doubleChar[sizeof(FONT[0])]; 300 | uint8_t dChar; 301 | if ((cursorPosition.x+2*sizeof(FONT[0]))>DISPLAY_WIDTH) break; 302 | 303 | for (uint8_t i=0; i < sizeof(FONT[0]); i++) { 304 | doubleChar[i] = 0; 305 | dChar = pgm_read_byte(&(FONT[(uint8_t)c][i])); 306 | for (uint8_t j=0; j<8; j++) { 307 | if ((dChar & (1 << j))) { 308 | doubleChar[i] |= (1 << (j*2)); 309 | doubleChar[i] |= (1 << ((j*2)+1)); 310 | } 311 | } 312 | } 313 | uint8_t data[sizeof(FONT[0])*2]; 314 | for (uint8_t i = 0; i < sizeof(FONT[0]); i++) 315 | { 316 | // print font to ram, print 6 columns 317 | data[i<<1]=(doubleChar[i] & 0xff); 318 | data[(i<<1)+1]=(doubleChar[i] & 0xff); 319 | } 320 | lcd_data(data, sizeof(FONT[0])*2); 321 | 322 | #if defined (SSD1306) || defined (SSD1309) 323 | uint8_t commandSequence[] = {0xb0+cursorPosition.y+1, 324 | 0x21, 325 | cursorPosition.x, 326 | 0x7f}; 327 | #elif defined SH1106 328 | uint8_t commandSequence[] = {0xb0+cursorPosition.y+1, 329 | 0x21, 330 | 0x00+((2+cursorPosition.x) & (0x0f)), 331 | 0x10+( ((2+cursorPosition.x) & (0xf0)) >> 4 ), 332 | 0x7f}; 333 | #endif 334 | lcd_command(commandSequence, sizeof(commandSequence)); 335 | 336 | for (uint8_t i = 0; i < sizeof(FONT[0]); i++) 337 | { 338 | // print font to ram, print 6 columns 339 | data[i<<1]=(doubleChar[i] >> 8); 340 | data[(i<<1)+1]=(doubleChar[i] >> 8); 341 | } 342 | lcd_data(data, sizeof(FONT[0])*2); 343 | 344 | commandSequence[0] = 0xb0+cursorPosition.y; 345 | #if defined (SSD1306) || defined (SSD1309) 346 | commandSequence[2] = cursorPosition.x+(2*sizeof(FONT[0])); 347 | #elif defined SH1106 348 | commandSequence[2] = 0x00+((2+cursorPosition.x+(2*sizeof(FONT[0]))) & (0x0f)); 349 | commandSequence[3] = 0x10+( ((2+cursorPosition.x+(2*sizeof(FONT[0]))) & (0xf0)) >> 4 ); 350 | #endif 351 | lcd_command(commandSequence, sizeof(commandSequence)); 352 | cursorPosition.x += sizeof(FONT[0])*2; 353 | } else { 354 | uint8_t data[sizeof(FONT[0])]; 355 | if ((cursorPosition.x+sizeof(FONT[0]))>DISPLAY_WIDTH) break; 356 | 357 | for (uint8_t i = 0; i < sizeof(FONT[0]); i++) 358 | { 359 | // print font to ram, print 6 columns 360 | data[i]=(pgm_read_byte(&(FONT[(uint8_t)c][i]))); 361 | } 362 | lcd_data(data, sizeof(FONT[0])); 363 | cursorPosition.x += sizeof(FONT[0]); 364 | } 365 | #endif 366 | break; 367 | } 368 | 369 | } 370 | void lcd_charMode(uint8_t mode){ 371 | charMode = mode; 372 | } 373 | void lcd_flip(uint8_t flipping){ 374 | uint8_t command[2] = {0xC8, 0xA1}; 375 | switch(flipping){ 376 | case 0: 377 | // normal mode default at init (needs to be reload data to display) 378 | command[0] = 0xC8; 379 | command[1] = 0xA1; 380 | lcd_command(command, sizeof(command)); 381 | break; 382 | case 1: 383 | // flip horizontal && vertical (needs to be reload data to display) 384 | command[0] = 0xC0; 385 | command[1] = 0xA0; 386 | lcd_command(command, sizeof(command)); 387 | break; 388 | case 2: 389 | // flip vertical (immediate without reload data to display) 390 | command[0] = 0xC0; 391 | lcd_command(command, sizeof(command)); 392 | break; 393 | case 3: 394 | // flip horizontal (needs to be reload data to display) 395 | command[1] = 0xA0; 396 | lcd_command(command, sizeof(command)); 397 | default: 398 | // do nothing 399 | break; 400 | } 401 | } 402 | void lcd_puts(const char* s){ 403 | while (*s) { 404 | lcd_putc(*s++); 405 | } 406 | } 407 | void lcd_puts_p(const char* progmem_s){ 408 | register uint8_t c; 409 | while ((c = pgm_read_byte(progmem_s++))) { 410 | lcd_putc(c); 411 | } 412 | } 413 | #ifdef GRAPHICMODE 414 | #pragma mark - 415 | #pragma mark GRAPHIC FUNCTIONS 416 | uint8_t lcd_drawPixel(uint8_t x, uint8_t y, uint8_t color){ 417 | if( x > DISPLAY_WIDTH-1 || y > (DISPLAY_HEIGHT-1)) return 1; // out of Display 418 | 419 | if( color == WHITE){ 420 | displayBuffer[(y / 8)][x] |= (1 << (y % 8)); 421 | } else { 422 | displayBuffer[(y / 8)][x] &= ~(1 << (y % 8)); 423 | } 424 | 425 | return 0; 426 | } 427 | uint8_t lcd_drawLine(uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2, uint8_t color){ 428 | uint8_t result; 429 | 430 | int dx = abs(x2-x1), sx = x1 dy) { err += dy; x1 += sx; } /* e_xy+e_x > 0 */ 439 | if (e2 < dx) { err += dx; y1 += sy; } /* e_xy+e_y < 0 */ 440 | } 441 | 442 | return result; 443 | } 444 | uint8_t lcd_drawRect(uint8_t px1, uint8_t py1, uint8_t px2, uint8_t py2, uint8_t color){ 445 | uint8_t result; 446 | 447 | result = lcd_drawLine(px1, py1, px2, py1, color); 448 | result = lcd_drawLine(px2, py1, px2, py2, color); 449 | result = lcd_drawLine(px2, py2, px1, py2, color); 450 | result = lcd_drawLine(px1, py2, px1, py1, color); 451 | 452 | return result; 453 | } 454 | uint8_t lcd_fillRect(uint8_t px1, uint8_t py1, uint8_t px2, uint8_t py2, uint8_t color){ 455 | uint8_t result; 456 | 457 | if( px1 > px2){ 458 | uint8_t temp = px1; 459 | px1 = px2; 460 | px2 = temp; 461 | temp = py1; 462 | py1 = py2; 463 | py2 = temp; 464 | } 465 | for (uint8_t i=0; i<=(py2-py1); i++){ 466 | result = lcd_drawLine(px1, py1+i, px2, py1+i, color); 467 | } 468 | 469 | return result; 470 | } 471 | uint8_t lcd_drawCircle(uint8_t center_x, uint8_t center_y, uint8_t radius, uint8_t color){ 472 | uint8_t result; 473 | 474 | int16_t f = 1 - radius; 475 | int16_t ddF_x = 1; 476 | int16_t ddF_y = -2 * radius; 477 | int16_t x = 0; 478 | int16_t y = radius; 479 | 480 | result = lcd_drawPixel(center_x , center_y+radius, color); 481 | result = lcd_drawPixel(center_x , center_y-radius, color); 482 | result = lcd_drawPixel(center_x+radius, center_y , color); 483 | result = lcd_drawPixel(center_x-radius, center_y , color); 484 | 485 | while (x= 0) { 487 | y--; 488 | ddF_y += 2; 489 | f += ddF_y; 490 | } 491 | x++; 492 | ddF_x += 2; 493 | f += ddF_x; 494 | 495 | result = lcd_drawPixel(center_x + x, center_y + y, color); 496 | result = lcd_drawPixel(center_x - x, center_y + y, color); 497 | result = lcd_drawPixel(center_x + x, center_y - y, color); 498 | result = lcd_drawPixel(center_x - x, center_y - y, color); 499 | result = lcd_drawPixel(center_x + y, center_y + x, color); 500 | result = lcd_drawPixel(center_x - y, center_y + x, color); 501 | result = lcd_drawPixel(center_x + y, center_y - x, color); 502 | result = lcd_drawPixel(center_x - y, center_y - x, color); 503 | } 504 | return result; 505 | } 506 | uint8_t lcd_fillCircle(uint8_t center_x, uint8_t center_y, uint8_t radius, uint8_t color) { 507 | uint8_t result; 508 | for(uint8_t i=0; i<= radius;i++){ 509 | result = lcd_drawCircle(center_x, center_y, i, color); 510 | } 511 | return result; 512 | } 513 | uint8_t lcd_drawBitmap(uint8_t x, uint8_t y, const uint8_t *picture, uint8_t width, uint8_t height, uint8_t color){ 514 | uint8_t result,i,j, byteWidth = (width+7)/8; 515 | for (j = 0; j < height; j++) { 516 | for(i=0; i < width;i++){ 517 | if(pgm_read_byte(picture + j * byteWidth + i / 8) & (128 >> (i & 7))){ 518 | result = lcd_drawPixel(x+i, y+j, color); 519 | } else { 520 | result = lcd_drawPixel(x+i, y+j, !color); 521 | } 522 | } 523 | } 524 | return result; 525 | } 526 | void lcd_display() { 527 | #if defined (SSD1306) || defined (SSD1309) 528 | lcd_gotoxy(0,0); 529 | lcd_data(&displayBuffer[0][0], DISPLAY_WIDTH*DISPLAY_HEIGHT/8); 530 | #elif defined SH1106 531 | for (uint8_t i = 0; i < DISPLAY_HEIGHT/8; i++){ 532 | lcd_gotoxy(0,i); 533 | lcd_data(displayBuffer[i], sizeof(displayBuffer[i])); 534 | } 535 | #endif 536 | } 537 | void lcd_clear_buffer() { 538 | for (uint8_t i = 0; i < DISPLAY_HEIGHT/8; i++){ 539 | memset(displayBuffer[i], 0x00, sizeof(displayBuffer[i])); 540 | } 541 | } 542 | uint8_t lcd_check_buffer(uint8_t x, uint8_t y) { 543 | if( x > DISPLAY_WIDTH-1 || y > (DISPLAY_HEIGHT-1)) return 0; // out of Display 544 | return displayBuffer[(y / (DISPLAY_HEIGHT/8))][x] & (1 << (y % (DISPLAY_HEIGHT/8))); 545 | } 546 | void lcd_display_block(uint8_t x, uint8_t line, uint8_t width) { 547 | if (line > (DISPLAY_HEIGHT/8-1) || x > DISPLAY_WIDTH - 1){return;} 548 | if (x + width > DISPLAY_WIDTH) { // no -1 here, x alone is width 1 549 | width = DISPLAY_WIDTH - x; 550 | } 551 | lcd_goto_xpix_y(x,line); 552 | lcd_data(&displayBuffer[line][x], width); 553 | } 554 | #endif 555 | -------------------------------------------------------------------------------- /lcd.h: -------------------------------------------------------------------------------- 1 | /* 2 | * This file is part of lcd library for ssd1306/ssd1309/sh1106 oled-display. 3 | * 4 | * lcd library for ssd1306/ssd1309/sh1106 oled-display is free software: you can redistribute it and/or modify 5 | * it under the terms of the GNU General Public License as published by 6 | * the Free Software Foundation, either version 3 of the License, or any later version. 7 | * 8 | * lcd library for ssd1306/ssd1309/sh1106 oled-display is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with Foobar. If not, see . 15 | * 16 | * Diese Datei ist Teil von lcd library for ssd1306/ssd1309/sh1106 oled-display. 17 | * 18 | * lcd library for ssd1306/ssd1309/sh1106 oled-display ist Freie Software: Sie können es unter den Bedingungen 19 | * der GNU General Public License, wie von der Free Software Foundation, 20 | * Version 3 der Lizenz oder jeder späteren 21 | * veröffentlichten Version, weiterverbreiten und/oder modifizieren. 22 | * 23 | * lcd library for ssd1306/ssd1309/sh1106 oled-display wird in der Hoffnung, dass es nützlich sein wird, aber 24 | * OHNE JEDE GEWÄHRLEISTUNG, bereitgestellt; sogar ohne die implizite 25 | * Gewährleistung der MARKTFÄHIGKEIT oder EIGNUNG FÜR EINEN BESTIMMTEN ZWECK. 26 | * Siehe die GNU General Public License für weitere Details. 27 | * 28 | * Sie sollten eine Kopie der GNU General Public License zusammen mit diesem 29 | * Programm erhalten haben. Wenn nicht, siehe . 30 | * 31 | * lcd.h 32 | * 33 | * Created by Michael Köhler on 22.12.16. 34 | * Copyright 2016 Skie-Systems. All rights reserved. 35 | * 36 | * lib for OLED-Display with ssd1306/ssd1309/sh1106-Controller 37 | * first dev-version only for I2C-Connection 38 | * at ATMega328P like Arduino Uno 39 | * 40 | * at GRAPHICMODE lib needs SRAM for display 41 | * DISPLAY-WIDTH * DISPLAY-HEIGHT + 2 bytes 42 | */ 43 | 44 | #ifndef LCD_H 45 | #define LCD_H 46 | 47 | #ifdef __cplusplus 48 | extern "C" { 49 | #endif 50 | 51 | #if (__GNUC__ * 100 + __GNUC_MINOR__) < 303 52 | #error "This library requires AVR-GCC 3.3 or later, update to newer AVR-GCC compiler !" 53 | #endif 54 | 55 | #include 56 | #include 57 | 58 | /* TODO: define bus */ 59 | #define I2C // I2C or SPI 60 | /* TODO: define displaycontroller */ 61 | #define SH1106 // or SSD1306, check datasheet of your display 62 | /* TODO: define displaymode */ 63 | #define TEXTMODE // TEXTMODE for only text to display, 64 | // GRAPHICMODE for text and graphic 65 | /* TODO: define font */ 66 | #define FONT ssd1306oled_font// set font here, refer font-name at font.h/font.c 67 | 68 | /* TODO: define I2C-adress for display */ 69 | 70 | // using 7-bit-adress for lcd-library 71 | // if you use your own library for twi check I2C-adress-handle 72 | #define LCD_I2C_ADR (0x78 >> 1) // 7 bit slave-adress without r/w-bit 73 | // r/w-bit are set/unset by library 74 | // e.g. 8 bit slave-adress: 75 | // 0x78 = adress 0x3C with cleared r/w-bit (write-mode) 76 | 77 | 78 | #ifdef I2C 79 | #include "i2c.h" // library for I2C-communication 80 | // if you want to use other lib for I2C 81 | // edit i2c_xxx commands in this library 82 | // i2c_start(), i2c_byte(), i2c_stop() 83 | 84 | #elif defined SPI 85 | // if you want to use your other lib/function for SPI replace SPI-commands 86 | #define LCD_PORT PORTB 87 | #define LCD_DDR DDRB 88 | #define RES_PIN PB0 89 | #define DC_PIN PB1 90 | #define CS_PIN PB2 91 | 92 | #endif 93 | 94 | #ifndef YES 95 | #define YES 1 96 | #endif 97 | 98 | #define NORMALSIZE 1 99 | #define DOUBLESIZE 2 100 | 101 | #define LCD_DISP_OFF 0xAE 102 | #define LCD_DISP_ON 0xAF 103 | 104 | #define WHITE 0x01 105 | #define BLACK 0x00 106 | 107 | #define DISPLAY_WIDTH 128 108 | #define DISPLAY_HEIGHT 64 109 | 110 | 111 | 112 | void lcd_command(uint8_t cmd[], uint8_t size); // transmit command to display 113 | void lcd_data(uint8_t data[], uint16_t size); // transmit data to display 114 | void lcd_init(uint8_t dispAttr); 115 | void lcd_home(void); // set cursor to 0,0 116 | void lcd_invert(uint8_t invert); // invert display 117 | void lcd_sleep(uint8_t sleep); // display goto sleep (power off) 118 | void lcd_set_contrast(uint8_t contrast); // set contrast for display 119 | void lcd_puts(const char* s); // print string, \n-terminated, from ram on screen (TEXTMODE) 120 | // or buffer (GRAPHICMODE) 121 | void lcd_puts_p(const char* progmem_s); // print string from flash on screen (TEXTMODE) 122 | // or buffer (GRAPHICMODE) 123 | 124 | void lcd_clrscr(void); // clear screen (and buffer at GRFAICMODE) 125 | void lcd_gotoxy(uint8_t x, uint8_t y); // set curser at pos x, y. x means character, 126 | // y means line (page, refer lcd manual) 127 | void lcd_goto_xpix_y(uint8_t x, uint8_t y); // set curser at pos x, y. x means pixel, 128 | // y means line (page, refer lcd manual) 129 | void lcd_putc(char c); // print character on screen at TEXTMODE 130 | // at GRAPHICMODE print character to buffer 131 | void lcd_charMode(uint8_t mode); // set size of chars 132 | void lcd_flip(uint8_t flipping); // flip display, 133 | // flipping == 0: no flip (normal mode) 134 | // == 1: flip horizontal & vertical 135 | // == 2: flip(mirrored) vertical 136 | // == 3: flip(mirrored) horizontal 137 | #if defined GRAPHICMODE 138 | uint8_t lcd_drawPixel(uint8_t x, uint8_t y, uint8_t color); 139 | uint8_t lcd_drawLine(uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2, uint8_t color); 140 | uint8_t lcd_drawRect(uint8_t px1, uint8_t py1, uint8_t px2, uint8_t py2, uint8_t color); 141 | uint8_t lcd_fillRect(uint8_t px1, uint8_t py1, uint8_t px2, uint8_t py2, uint8_t color); 142 | uint8_t lcd_drawCircle(uint8_t center_x, uint8_t center_y, uint8_t radius, uint8_t color); 143 | uint8_t lcd_fillCircle(uint8_t center_x, uint8_t center_y, uint8_t radius, uint8_t color); 144 | uint8_t lcd_drawBitmap(uint8_t x, uint8_t y, const uint8_t picture[], uint8_t width, uint8_t height, uint8_t color); 145 | void lcd_display(void); // copy buffer to display RAM 146 | void lcd_clear_buffer(void); // clear display buffer 147 | uint8_t lcd_check_buffer(uint8_t x, uint8_t y); // read a pixel value from the display buffer 148 | void lcd_display_block(uint8_t x, uint8_t line, uint8_t width); // display (part of) a display line 149 | #endif 150 | 151 | #ifdef __cplusplus 152 | } 153 | #endif 154 | #endif /* LCD_H */ 155 | -------------------------------------------------------------------------------- /main.c: -------------------------------------------------------------------------------- 1 | //****main.c****// 2 | #include "lcd.h" 3 | 4 | 5 | int main(void){ 6 | lcd_init(LCD_DISP_ON); // init lcd and turn on 7 | 8 | lcd_puts("Hello World"); // put string from RAM to display (TEXTMODE) or buffer (GRAPHICMODE) 9 | lcd_gotoxy(0,2); // set cursor to first column at line 3 10 | lcd_puts_p(PSTR("String from flash")); // puts string form flash to display (TEXTMODE) or buffer (GRAPHICMODE) 11 | #if defined GRAPHICMODE 12 | lcd_drawCircle(64,32,7,WHITE); // draw circle to buffer white lines 13 | lcd_display(); // send buffer to display 14 | #endif 15 | for(;;){ 16 | //main loop 17 | } 18 | return 0; 19 | } 20 | -------------------------------------------------------------------------------- /oled.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Sylaina/oled-display/d826069f1f61c7694b2b06e32c3939e53e93b031/oled.jpg -------------------------------------------------------------------------------- /readme.md: -------------------------------------------------------------------------------- 1 | # OLED for AVR mikrocontrollers 2 | Library for oled-displays with SSD1306, SSD1309 or SH1106 display-controller connected with I2C or SPI at an AVR Atmel Atmega like Atmega328P. 3 | 4 | 5 | 6 | This library allows you to display text or/and graphic at oled-display. 7 | The library need less than 2 kilobytes flash-memory and 3 bytes sram in textmode, in graphicmode library need less than 3 kilobytes flash-memory and 1027 bytes static sram so you can use oled-displays e.g with Atmega48PA (only with textmode). 8 | Library is only tested with 128x64 Pixel display, lower resolution not tested but should work too. 9 | 10 | If you want to use your own I2C library you have to fit i2c-function at lcd-library. 11 | Settings for I2C-bus have to set at i2c.h 12 | Settings for display have to set at lcd.h 13 | 14 | If you want to use characters like e.g. ä set your compiler input-charset to utf-8 and your compiler exec-charset to iso-8859-15 (look at makefile line 115). 15 | 16 | Testcondition: Display: SSD1306 OLED, Compiler Optimizelevel: -Os, µC: Atmega328p @ 8 MHz internal RC 17 | 18 | Memory: 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 |
ModulFlashStatic RAM
I2C-Core220 Bytes0 Bytes
FONT660 Bytes0 Bytes
OLED (Text-Mode)1437 Bytes2 Bytes
OLED (Graphic-Mode)2561 Bytes1026 Bytes
46 | 47 | 48 | 49 | Speed (print 20 charaters (1 line) in normal size to display): 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 |
ModeTimeI2C-Speed
OLED (Text-Mode)4.411 ms400 kHz
OLED (Text-Mode)15.384 ms100 kHz
OLED (Graphic-Mode)26.603 ms400 kHz
OLED (Graphic-Mode)96.294 ms100 kHz
78 | 79 | 80 | example: 81 | 82 | ```c 83 | //****main.c****// 84 | #include "lcd.h" 85 | 86 | 87 | int main(void){ 88 | lcd_init(LCD_DISP_ON); // init lcd and turn on 89 | 90 | lcd_puts("Hello World"); // put string from RAM to display (TEXTMODE) or buffer (GRAPHICMODE) 91 | lcd_gotoxy(0,2); // set cursor to first column at line 3 92 | lcd_puts_p(PSTR("String from flash")); // puts string form flash to display (TEXTMODE) or buffer (GRAPHICMODE) 93 | #if defined GRAPHICMODE 94 | lcd_drawCircle(64,32,7,WHITE); // draw circle to buffer 95 | lcd_display(); // send buffer to display 96 | #endif 97 | for(;;){ 98 | //main loop 99 | } 100 | return 0; 101 | } 102 | ``` 103 | example for chars with double height: 104 | ```c 105 | //****main.c****// 106 | #include "lcd.h" 107 | 108 | int main(void){ 109 | 110 | lcd_init(LCD_DISP_ON); 111 | lcd_clrscr(); 112 | lcd_set_contrast(0x00); 113 | lcd_gotoxy(4,1); 114 | lcd_puts("Normal Size"); 115 | lcd_charMode(DOUBLESIZE); 116 | lcd_gotoxy(0,4); 117 | lcd_puts(" Double \r\n Size"); 118 | lcd_charMode(NORMALSIZE); 119 | 120 | #ifdef GRAPHICMODE 121 | lcd_display(); 122 | #endif 123 | for(;;){ 124 | //main loop 125 | } 126 | return 0; 127 | } 128 | ``` 129 | 130 | 131 | --------------------------------------------------------------------------------