parent
90042d221d
commit
bbaf8bad62
@ -0,0 +1,166 @@ |
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MCU = atmega328p
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F_CPU = 16000000
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LFUSE = 0xFF
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HFUSE = 0xDE
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EFUSE = 0x05
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MAIN = main.c
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## If you've split your program into multiple files,
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## include the additional .c source (in same directory) here
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## (and include the .h files in your foo.c)
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LOCAL_SOURCE =
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## Here you can link to one more directory (and multiple .c files)
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# EXTRA_SOURCE_DIR = ../AVR-Programming-Library/
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EXTRA_SOURCE_DIR =
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EXTRA_SOURCE_FILES =
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##########------------------------------------------------------##########
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########## Programmer Defaults ##########
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########## Set up once, then forget about it ##########
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########## (Can override. See bottom of file.) ##########
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##########------------------------------------------------------##########
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#19200
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PROGRAMMER_TYPE = arduino
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PROGRAMMER_ARGS = -b 57600 -P /dev/ttyUSB0
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##########------------------------------------------------------##########
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########## Makefile Magic! ##########
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########## Summary: ##########
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########## We want a .hex file ##########
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########## Compile source files into .elf ##########
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########## Convert .elf file into .hex ##########
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########## You shouldn't need to edit below. ##########
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##########------------------------------------------------------##########
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## Defined programs / locations
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CC = avr-gcc
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OBJCOPY = avr-objcopy
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OBJDUMP = avr-objdump
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AVRSIZE = avr-size
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AVRDUDE = sudo avrdude
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## Compilation options, type man avr-gcc if you're curious.
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CFLAGS = -std=gnu99 -mmcu=$(MCU) -DF_CPU=$(F_CPU)UL -I. -I$(EXTRA_SOURCE_DIR)
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CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
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CFLAGS += -Wall -Wno-main -Wno-strict-prototypes -Wno-comment
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CFLAGS += -g2 -Wextra -Wfatal-errors
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CFLAGS += -ffunction-sections -fdata-sections -Wl,--gc-sections -Wl,--relax
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CFLAGS_BUILD = $(CFLAGS) -Os
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# CFLAGS += -lm
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## CFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm ## for floating-point printf
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## CFLAGS += -Wl,-u,vfprintf -lprintf_min ## for smaller printf
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## Lump target and extra source files together
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TARGET = $(strip $(basename $(MAIN)))
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SRC1 = $(TARGET).c
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SRC = $(SRC1)
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EXTRA_SOURCE = $(addprefix $(EXTRA_SOURCE_DIR), $(EXTRA_SOURCE_FILES))
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SRC += $(EXTRA_SOURCE)
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SRC += $(LOCAL_SOURCE)
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## List of all header files
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HEADERS = $(SRC:.c=.h)
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## For every .c file, compile an .o object file
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OBJ = $(SRC:.c=.o)
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## Generic Makefile targets. (Only .hex file is necessary)
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all: $(TARGET).hex size |
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pre: $(TARGET).pre |
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%.hex: %.elf |
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$(OBJCOPY) -R .eeprom -O ihex $< $@
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%.elf: $(SRC) |
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$(CC) $(CFLAGS_BUILD) $(SRC) --output $@
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%.pre: $(SRC1) |
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$(CC) $(CFLAGS) -E $(SRC1) --output $@
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%.eeprom: %.elf |
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$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@
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debug: |
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@echo
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@echo "Source files:" $(SRC)
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@echo "MCU, F_CPU, BAUD:" $(MCU), $(F_CPU), $(BAUD)
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@echo
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# Optionally create listing file from .elf
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# This creates approximate assembly-language equivalent of your code.
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# Useful for debugging time-sensitive bits,
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# or making sure the compiler does what you want.
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disassemble: $(TARGET).lst |
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dis: disassemble |
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lst: disassemble |
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eeprom: $(TARGET).eeprom |
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%.lst: %.elf |
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$(OBJDUMP) -S $< > $@
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# Optionally show how big the resulting program is
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size: $(TARGET).elf |
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$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
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clean: |
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rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
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$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
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$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
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$(TARGET).eeprom
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squeaky_clean: |
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rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~
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##########------------------------------------------------------##########
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########## Programmer-specific details ##########
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########## Flashing code to AVR using avrdude ##########
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##########------------------------------------------------------##########
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flash: $(TARGET).hex |
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
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flash_eeprom: $(TARGET).eeprom |
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
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terminal: |
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
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flash_arduino: PROGRAMMER_TYPE = arduino |
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flash_arduino: PROGRAMMER_ARGS = |
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flash_arduino: flash |
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flash_dragon_isp: PROGRAMMER_TYPE = dragon_isp |
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flash_dragon_isp: PROGRAMMER_ARGS = |
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flash_dragon_isp: flash |
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##########------------------------------------------------------##########
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########## Fuse settings and suitable defaults ##########
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##########------------------------------------------------------##########
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## Generic
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FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m
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fuses: |
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
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$(PROGRAMMER_ARGS) $(FUSE_STRING)
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show_fuses: |
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv
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## Called with no extra definitions, sets to defaults
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set_default_fuses: FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m |
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set_default_fuses: fuses |
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@ -0,0 +1,351 @@ |
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; Zapojeni (Připojen DMC-50399 v 4-bitovem modu): |
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; +------u------+ |
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; Vcc -> reset --+ /RST Vcc +-- napajeni +5V |
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; --+ PD0 PB7 +-- RS (0=instr W, BF+addr R; 1=data W/R) |
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; --+ PD1 PB6 +-- R/W (1=read,0=write) |
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; --+ PA1 PB5 +-- E (clock, active falling edge) |
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; --+ PA0 PB4 +-- |
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; --+ PD2 PB3 +-- DATA 7 |
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; --+ PD3 PB2 +-- DATA 6 |
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; --+ PD4 PB1 +-- DATA 5 |
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; --+ PD5 PB0 +-- DATA 4 |
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; GND --+ GND PD6 +-- |
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; +-------------+ |
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;DMC-50399: |
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; 1 - GND |
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; 2 - +5V |
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; 3 - 0V (lcd driver) |
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; 4 - RS |
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; 5 - R/W |
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; 6 - E |
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; 7 - DATA 0 |
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; 8 - DATA 1 |
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;... |
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;14 - DATA 7 |
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.device attiny2313 |
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;běží na 4MHz, ckdiv8=1 (vypnuto) |
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;250x16=1ms=1000us |
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;LFUSE: 0xE2 -U lfuse:w:0xE2:m |
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;HFUSE: 0xDF -U hfuse:w:0xDF:m |
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;K O N S T A N T Y + P R E Z D I V K Y P O R T U A P I N U |
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.equ LCDPORT = PORTB |
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.equ LCDPIN = PINB |
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.equ LCDDDR = DDRB |
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.equ RS = 7 |
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.equ RW = 6 |
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.equ E = 5 |
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.equ LCD_CLEAR = 0b00000001 |
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.equ LCD_HOME = 0b00000010 |
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.equ LCD_MODE_INC_NOSHIFT = 0b00000110 |
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.equ LCD_MODE_INC_SHIFT = 0b00000111 |
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.equ LCD_MODE_DEC_NOSHIFT = 0b00000100 |
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.equ LCD_MODE_DEC_SHIFT = 0b00000101 |
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.equ LCD_DISPLAY_DISABLED = 0b00001000 |
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.equ LCD_DISPLAY_NOCURSOR = 0b00001100 |
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.equ LCD_DISPLAY_CURSOR = 0b00001110 |
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.equ LCD_DISPLAY_ALTER = 0b00001101 |
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.equ LCD_DISPLAY_CURSOR_ALTER = 0b00001111 |
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.equ LCD_CURSOR_LEFT = 0b00010000 |
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.equ LCD_CURSOR_RIGHT = 0b00010100 |
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.equ LCD_SHIFT_LEFT = 0b00011000 |
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.equ LCD_SHIFT_RIGHT = 0b00011100 |
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;5x7 font, 1-line |
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.equ LCD_MODE_4BIT_1LINE = 0b00100000 |
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;.equ LCD_MODE_8BIT_1LINE = 0b00110000 |
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;5x7 font, 2-line |
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.equ LCD_MODE_4BIT_2LINE = 0b00101000 |
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;.equ LCD_MODE_8BIT_2LINE = 0b00111000 |
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.equ ROW1_ADDR = 0x00 |
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.equ ROW2_ADDR = 0x40 |
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.equ ROW3_ADDR = 0x14 |
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.equ ROW4_ADDR = 0x54 |
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;aliases |
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.def ZH = r31 |
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.def ZL = r30 |
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.def YH = r29 |
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.def YL = r28 |
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.def XH = r27 |
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.def XL = r26 |
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; Z A C A T E K P R O G R A M U |
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;vektory preruseni |
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.org 0x0000 ;RESET |
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rjmp RESET ;skok na start po resetu |
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.org 0x0013 |
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;nastaveni po resetu |
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.DB "HD44780 INTERFACE" ;(nazev programu) |
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RESET: |
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ldi r16,low(RAMEND) ;nastavi stack pointer |
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out SPL,r16 |
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cli ;zakazat vsechna preruseni |
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; Nastaveni portu |
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;PORTB = LCDPORT |
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ldi r16,0b11111111 ;smer portu B |
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out LCDDDR,r16 |
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ldi r16,0b00000000 ;vypnout B |
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out LCDPORT,r16 |
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sei ;Global Interrupt Enable |
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; == display init == |
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rcall LCD_INIT |
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ldi r17,LCD_MODE_INC_NOSHIFT |
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rcall TX_INSTR |
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ldi r17,LCD_DISPLAY_NOCURSOR |
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rcall TX_INSTR |
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; == load user-defined characters to CGRAM == (default, array label named MYCHARS, end-mark=0xFE) |
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ldi r17,0 |
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rcall CGRAM_SET_ADDR |
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ldi ZH,high(MYCHARS*2) |
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ldi ZL,low(MYCHARS*2) |
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CGRAM_loop: |
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lpm r17,Z+ |
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cpi r17,0xFE |
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breq CGRAM_loop_end |
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rcall TX_DATA |
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rjmp CGRAM_loop |
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CGRAM_loop_end: |
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; == pgm body == |
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;load text to DDRAM |
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ldi r17,ROW1_ADDR |
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rcall DDRAM_SET_ADDR |
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ldi ZH,high(MYTEXT1*2) |
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ldi ZL,low(MYTEXT1*2) |
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DDRAM_loop: |
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lpm r17,Z+ |
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cpi r17,0xFE |
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breq DDRAM_loop_end |
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rcall TX_DATA |
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rjmp DDRAM_loop |
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DDRAM_loop_end: |
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;load text to DDRAM |
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ldi r17,ROW2_ADDR |
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rcall DDRAM_SET_ADDR |
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ldi ZH,high(MYTEXT2*2) |
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ldi ZL,low(MYTEXT2*2) |
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DDRAM2_loop: |
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lpm r17,Z+ |
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cpi r17,0xFE |
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breq DDRAM2_loop_end |
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rcall TX_DATA |
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rjmp DDRAM2_loop |
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DDRAM2_loop_end: |
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;direct write to X,Y - example |
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ldi r16,3 ;Y, zacina 0 a roste smerem dolu |
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ldi r17,5 ;X, zacina nulou a roste smerem doprava |
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rcall LCD_CURSOR_XY |
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ldi r17,"%" |
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rcall TX_DATA |
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ldi r17,"%" |
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rcall TX_DATA |
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ldi r17,"%" |
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rcall TX_DATA |
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;infinite loop |
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loop: rjmp loop |
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MYTEXT1: |
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.DB 0,0,0," POKUSNY TEXT ",0,0,0,0xFE |
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MYTEXT2: |
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.DB "Opravdu pekny text!",0xFE |
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; == USER-DEFINED CHARS == |
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MYCHARS: |
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; 5x8, first 3 bits are not used |
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;end of mychars |
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.DB 0xe,0x1f,0x15,0x1f,0x1f,0x1f,0x15 ;smajlik |
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;konec |
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.DB 0xFE |
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;r16=Y |
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;r17=X |
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LCD_CURSOR_XY: |
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cpi r16,0 |
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brne test1 |
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fail: ldi r16,ROW1_ADDR |
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rjmp addrdone |
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test1: |
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cpi r16,1 |
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brne test2 |
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ldi r16,ROW2_ADDR |
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rjmp addrdone |
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test2: |
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cpi r16,2 |
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brne test3 |
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ldi r16,ROW3_ADDR |
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rjmp addrdone |
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test3: |
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cpi r16,3 |
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brne fail |
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ldi r16,ROW4_ADDR |
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addrdone: |
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add r17,r16 |
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rcall DDRAM_SET_ADDR |
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ret |
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;r16=počet ms (cca) |
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delay: |
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push r17 ;2 |
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push r18 ;2 |
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d1: |
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ldi r17,250 ;1 |
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d2: |
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ldi r18,14 ;1 |
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d3: |
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dec r18 ;1 |
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nop |
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brne d3 ;2 (1 |
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dec r17 ; +1) |
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brne d2 ;2 (1 |
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dec r16 ; +1) |
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brne d1 ;2 (1) |
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pop r18 ;2 |
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pop r17 ;2 |
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ret |
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LCD_INIT: |
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ldi r16,16 |
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rcall delay |
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ldi r16,0b00000010 ;4bit |
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out PORTB,r16 |
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rcall LCD_CLK |
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ldi r16,5 |
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rcall delay |
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ldi r17,LCD_MODE_4BIT_2LINE ;set 4-bit mode |
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rcall TX_INSTR |
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ret |
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;r17 |
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TX_INSTR: |
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swap r17 ;send high nibble |
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mov r16,r17 |
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andi r16,0b00001111 |
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out LCDPORT,r16 |
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rcall LCD_CLK |
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swap r17 ;send low nibble |
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mov r16,r17 |
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andi r16,0b00001111 |
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out LCDPORT,r16 |
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rcall LCD_CLK |
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ret |
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|
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;r17 |
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TX_DATA: |
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swap r17 ;send high nibble |
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mov r16,r17 |
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andi r16,0b00001111 |
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sbr r16,(1<<RS) |
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out LCDPORT,r16 |
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rcall LCD_CLK |
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swap r17 ;send low nibble |
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mov r16,r17 |
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andi r16,0b00001111 |
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sbr r16,(1<<RS) |
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out LCDPORT,r16 |
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rcall LCD_CLK |
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|
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ret |
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|
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;r17 disabled to reduce code size |
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;RX_DATA: |
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; ;input |
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; ldi r16,0b11110000 ;LCDPORT dirrection (RS RW E n.c.) output, (D7 D6 D5 D4) input |
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; out LCDDDR,r16 |
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; ldi r16,0b00001111 ;pullups to data pins enabled |
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; out LCDPORT,r16 |
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; |
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; clr r17 |
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; ldi r16,(1<<RW)|(1<<RS) |
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; out LCDPORT,r16 ;set LCD to read mode, for data |
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; |
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; rcall LCD_CLK ;receive high nibble |
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; in r16,LCDPIN |
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; andi r16,0b00001111 |
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; or r17,r16 |
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; swap r17 ;store high nibble |
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; |
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; rcall LCD_CLK ;receive low nibble |
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; in r16,LCDPIN |
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; andi r16,0b00001111 |
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; or r17,r16 ;store low nibble |
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; |
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; ;output |
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; ldi r16,0b11111111 ;LCDPORT as output (RS RW E n.c. D7 D6 D5 D4) |
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; out LCDDDR,r16 |
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; ldi r16,0b00000000 ;LCDPORT off |
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; out LCDPORT,r16 |
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; |
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; ;r17=received value (D7 D6 D5 D4 D3 D2 D1 D0) |
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; ret |
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|
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LCD_CLK: |
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sbi LCDPORT,E ;EXECUTE on |
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nop |
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nop |
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nop |
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cbi LCDPORT,E ;EXECUTE off |
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ldi r16,150 ;pause: 100 for 4MHZ |
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clkw: |
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dec r16 |
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brne clkw |
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ret |
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|
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;r17 |
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;7 bitu (1.radek zacina 00,druhej 40) |
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DDRAM_SET_ADDR: |
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clr r16 |
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sbr r16,0b10000000 |
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or r17,r16 |
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rcall TX_INSTR |
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ret |
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|
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;r17 |
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;6 bitu (5,4,3 = znak, 2,1,0 = radek - shora) |
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CGRAM_SET_ADDR: |
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clr r16 |
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sbr r16,0b01000000 |
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or r17,r16 |
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rcall TX_INSTR |
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ret |
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@ -0,0 +1 @@ |
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/home/ondra/devel/avr/avr-projects/devel/lib |
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@ -0,0 +1,182 @@ |
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#include <avr/io.h> |
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#include <avr/interrupt.h> |
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#include <avr/pgmspace.h> |
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#include <util/delay.h> |
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#include <stdbool.h> |
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#include <stdint.h> |
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#include <stdlib.h> |
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|
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#include "lib/meta.h" |
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#include "lib/arduino_pins.h" |
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#include "lib/calc.h" |
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|
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#define LCD_PIN_RS D10 |
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#define LCD_PIN_RW D11 |
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#define LCD_PIN_E D12 |
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#define LCD_PIN_D4 D13 |
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#define LCD_PIN_D5 D14 |
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#define LCD_PIN_D6 D15 |
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#define LCD_PIN_D7 D16 |
||||
// D17 = A3 = source of entropy for random.
|
||||
|
||||
#include "lib/hd44780.h" |
||||
|
||||
|
||||
// Buttons (to ground)
|
||||
#define BTN_LEFT D2 |
||||
#define BTN_RIGHT D3 |
||||
#define BTN_UP D4 |
||||
#define BTN_DOWN D5 |
||||
#define BTN_SELECT D6 |
||||
#define BTN_RESTART D7 |
||||
|
||||
// Debouncer channels for buttons
|
||||
// (Must be added in this order to debouncer)
|
||||
#define D_LEFT 0 |
||||
#define D_RIGHT 1 |
||||
#define D_UP 2 |
||||
#define D_DOWN 3 |
||||
#define D_SELECT 4 |
||||
#define D_RESTART 5 |
||||
|
||||
#define DEBO_CHANNELS 6 |
||||
#define DEBO_TICKS 1 // in 0.01s
|
||||
|
||||
#include "lib/debounce.h" |
||||
|
||||
// Board size (!!! rows = 2x number of display lines, max 2*4 = 8 !!!)
|
||||
#define ROWS 4 |
||||
#define COLS 20 |
||||
|
||||
// proto
|
||||
void render(); |
||||
void update(); |
||||
|
||||
|
||||
void SECTION(".init8") init() |
||||
{ |
||||
// Randomize RNG
|
||||
adc_init(); |
||||
srand(adc_read_word(3)); |
||||
|
||||
// Init LCD
|
||||
lcd_init(); |
||||
|
||||
// gamepad buttons
|
||||
as_input_pu(BTN_LEFT); |
||||
as_input_pu(BTN_RIGHT); |
||||
as_input_pu(BTN_UP); |
||||
as_input_pu(BTN_DOWN); |
||||
as_input_pu(BTN_SELECT); |
||||
as_input_pu(BTN_RESTART); |
||||
|
||||
// add buttons to debouncer
|
||||
debo_add_rev(BTN_LEFT); |
||||
debo_add_rev(BTN_RIGHT); |
||||
debo_add_rev(BTN_UP); |
||||
debo_add_rev(BTN_DOWN); |
||||
debo_add_rev(BTN_SELECT); |
||||
debo_add_rev(BTN_RESTART); |
||||
|
||||
// setup timer
|
||||
TCCR0A = _BV(WGM01); // CTC
|
||||
TCCR0B = _BV(CS02) | _BV(CS00); // prescaler 1024
|
||||
OCR0A = 156; // interrupt every 10 ms
|
||||
sbi(TIMSK0, OCIE0A); |
||||
sei(); |
||||
} |
||||
|
||||
|
||||
/** timer 0 interrupt vector */ |
||||
ISR(TIMER0_COMPA_vect) |
||||
{ |
||||
debo_tick(); // poll debouncer
|
||||
update(); // update game state
|
||||
render(); |
||||
} |
||||
|
||||
|
||||
|
||||
// sub-glyphs
|
||||
#define _HEAD_ 31, 21, 21, 31 |
||||
#define _BODY_ 31, 31, 31, 31 |
||||
#define _FOOD_ 10, 21, 17, 14 |
||||
#define _NONE_ 0, 0, 0, 0 |
||||
|
||||
// complete glyphs for loading into memory
|
||||
|
||||
// Only one food & one head glyph have to be loaded at a time.
|
||||
|
||||
// Body - Body
|
||||
const uint8_t BB[] PROGMEM = {_BODY_, _BODY_}; |
||||
|
||||
// Body - None
|
||||
const uint8_t BX[] PROGMEM = {_BODY_, _NONE_}; |
||||
const uint8_t XB[] PROGMEM = {_NONE_, _BODY_}; |
||||
|
||||
// Head - None
|
||||
const uint8_t HX[] PROGMEM = {_HEAD_, _NONE_}; |
||||
const uint8_t XH[] PROGMEM = {_NONE_, _HEAD_}; |
||||
|
||||
// Body - Head
|
||||
const uint8_t BH[] PROGMEM = {_BODY_, _HEAD_}; |
||||
const uint8_t HB[] PROGMEM = {_HEAD_, _BODY_}; |
||||
|
||||
// Head - Food
|
||||
const uint8_t HF[] PROGMEM = {_HEAD_, _FOOD_}; |
||||
const uint8_t FH[] PROGMEM = {_FOOD_, _HEAD_}; |
||||
|
||||
// Food - None
|
||||
const uint8_t FX[] PROGMEM = {_FOOD_, _NONE_}; |
||||
const uint8_t XF[] PROGMEM = {_NONE_, _FOOD_}; |
||||
|
||||
// Body - Food
|
||||
const uint8_t BF[] PROGMEM = {_BODY_, _FOOD_}; |
||||
const uint8_t FB[] PROGMEM = {_FOOD_, _BODY_}; |
||||
|
||||
// board block (snake, food...)
|
||||
typedef enum { |
||||
EMPTY = 0x00, |
||||
HEAD = 0x01, |
||||
FOOD = 0x02, |
||||
BODY_LEFT = 0x80; |
||||
BODY_RIGHT = 0x81, |
||||
BODY_UP = 0x82, |
||||
BODY_DOWN = 0x83, |
||||
} block_t; |
||||
|
||||
typedef struct { |
||||
uint8_t x; |
||||
uint8_t y; |
||||
} coord_t; |
||||
|
||||
#define is_body(blk) ((blk) & 0x80) |
||||
|
||||
// y, x indexing
|
||||
block_t board[ROWS][COLS]; |
||||
|
||||
coord_t head_pos; |
||||
coord_t food_pos; |
||||
|
||||
|
||||
void main() |
||||
{ |
||||
lcd_define_glyph_pgm(0, BX); |
||||
lcd_define_glyph_pgm(1, BB); |
||||
lcd_define_glyph_pgm(2, XB); |
||||
lcd_define_glyph_pgm(3, XH); |
||||
lcd_define_glyph_pgm(4, XF); |
||||
|
||||
// Test
|
||||
lcd_char_xy(5, 0, 0); |
||||
lcd_char_xy(6, 0, 0); |
||||
lcd_char_xy(7, 0, 1); |
||||
lcd_char_xy(7, 1, 0); |
||||
lcd_char_xy(8, 1, 0); |
||||
lcd_char_xy(9, 1, 1); |
||||
lcd_char_xy(10, 1, 2); |
||||
lcd_char_xy(11, 1, 3); |
||||
lcd_char_xy(14, 1, 4); |
||||
|
||||
while(1); |
||||
} |
||||
@ -0,0 +1,374 @@ |
||||
#pragma once |
||||
|
||||
#include <stdbool.h> |
||||
#include <stdint.h> |
||||
#include <avr/io.h> |
||||
#include <avr/pgmspace.h> |
||||
#include <util/delay.h> |
||||
|
||||
#include "arduino_pins.h" |
||||
#include "calc.h" |
||||
#include "pins.h" |
||||
#include "nsdelay.h" |
||||
|
||||
/*
|
||||
HD44780 LCD display driver - 4-bit mode |
||||
|
||||
Required macros - pin settings (eg. B,3 or D,0) |
||||
|
||||
LCD_PIN_RS |
||||
LCD_PIN_RW |
||||
LCD_PIN_E |
||||
LCD_PIN_D7 |
||||
LCD_PIN_D6 |
||||
LCD_PIN_D5 |
||||
LCD_PIN_D4 |
||||
|
||||
Define those before including the header file. |
||||
*/ |
||||
|
||||
// Commands for user
|
||||
|
||||
// Clear screen (reset)
|
||||
#define LCD_CLEAR 0b00000001 |
||||
// Move cursor to (0,0), unshift...
|
||||
#define LCD_HOME 0b00000010 |
||||
|
||||
// Set mode: Increment + NoShift
|
||||
#define LCD_MODE_INC 0b00000110 |
||||
// Set mode: Increment + Shift
|
||||
#define LCD_MODE_INC_SHIFT 0b00000111 |
||||
|
||||
// Set mode: Decrement + NoShift
|
||||
#define LCD_MODE_DEC 0b00000100 |
||||
// Set mode: Decrement + Shift
|
||||
#define LCD_MODE_DEC_SHIFT 0b00000101 |
||||
|
||||
// Disable display (data remains untouched)
|
||||
#define LCD_DISABLE 0b00001000 |
||||
|
||||
// Disable cursor
|
||||
#define LCD_CURSOR_NONE 0b00001100 |
||||
// Set cursor to still underscore
|
||||
#define LCD_CURSOR_BAR 0b00001110 |
||||
// Set cursor to blinking block
|
||||
#define LCD_CURSOR_BLINK 0b00001101 |
||||
// Set cursor to both of the above at once
|
||||
#define LCD_CURSOR_BOTH (LCD_CURSOR_BAR | LCD_CURSOR_BLINK) |
||||
|
||||
// Move cursor
|
||||
#define LCD_MOVE_LEFT 0b00010000 |
||||
#define LCD_MOVE_RIGHT 0b00010100 |
||||
|
||||
// Shift display
|
||||
#define LCD_SHIFT_LEFT 0b00011000 |
||||
#define LCD_SHIFT_RIGHT 0b00011100 |
||||
|
||||
// Set iface to 5x7 font, 1-line
|
||||
#define LCD_IFACE_4BIT_1LINE 0b00100000 |
||||
#define LCD_IFACE_8BIT_1LINE 0b00110000 |
||||
// Set iface to 5x7 font, 2-line
|
||||
#define LCD_IFACE_4BIT_2LINE 0b00101000 |
||||
#define LCD_IFACE_8BIT_2LINE 0b00111000 |
||||
|
||||
|
||||
// Start address of rows
|
||||
const uint8_t LCD_ROW_ADDR[] = {0x00, 0x40, 0x14, 0x54}; |
||||
|
||||
// prototypes
|
||||
|
||||
// --- PUBLIC API ---
|
||||
|
||||
/** Init the display */ |
||||
void lcd_init(); |
||||
/** Write a command */ |
||||
void lcd_write_command(const uint8_t bb); |
||||
/** Write data byte */ |
||||
void lcd_write_data(const uint8_t bb); |
||||
/** Read busy flag & address */ |
||||
uint8_t lcd_read_bf_addr(); |
||||
/** Read byte from ram */ |
||||
uint8_t lcd_read_ram(); |
||||
/** Show string */ |
||||
void lcd_str(char* str); |
||||
/** Show string at X, Y */ |
||||
#define lcd_str_xy(x, y, str_p) do { lcd_xy((x), (y)); lcd_str((str_p)); } while(0) |
||||
/** Show char */ |
||||
void lcd_char(const char c); |
||||
/** Show char at X, Y */ |
||||
#define lcd_char_xy(x, y, c) do { lcd_xy((x), (y)); lcd_char((c)); } while(0) |
||||
/** Move cursor to X, Y */ |
||||
void lcd_xy(const uint8_t x, const uint8_t y); |
||||
/** Set address in CGRAM */ |
||||
void lcd_set_addr_cgram(const uint8_t acg); |
||||
/** Set address in DDRAM */ |
||||
void lcd_set_addr(const uint8_t add); |
||||
|
||||
/** Set cursor */ |
||||
#define CURSOR_NONE 0b00 |
||||
#define CURSOR_BAR 0b10 |
||||
#define CURSOR_BLINK 0b01 |
||||
#define CURSOR_BOTH 0b11 |
||||
void lcd_cursor(uint8_t type); |
||||
|
||||
/** Disable / enable, preserving cursor */ |
||||
void lcd_disable(); |
||||
void lcd_enable(); |
||||
|
||||
/** Define a custom glyph */ |
||||
void lcd_define_glyph(const uint8_t index, const uint8_t* array); |
||||
|
||||
|
||||
// Internals
|
||||
void _lcd_mode_r(); |
||||
void _lcd_mode_w(); |
||||
void _lcd_clk(); |
||||
void _lcd_wait_bf(); |
||||
void _lcd_write_byte(uint8_t bb); |
||||
uint8_t _lcd_read_byte(); |
||||
|
||||
|
||||
// Write utilities
|
||||
#define _lcd_write_low(bb) _lcd_write_nibble((bb) & 0x0F) |
||||
#define _lcd_write_high(bb) _lcd_write_nibble(((bb) & 0xF0) >> 4) |
||||
#define _lcd_write_nibble(nib) do { \ |
||||
write_pin(LCD_PIN_D7, get_bit((nib), 3)); \
|
||||
write_pin(LCD_PIN_D6, get_bit((nib), 2)); \
|
||||
write_pin(LCD_PIN_D5, get_bit((nib), 1)); \
|
||||
write_pin(LCD_PIN_D4, get_bit((nib), 0)); \
|
||||
} while(0) |
||||
|
||||
|
||||
|
||||
// 0 W, 1 R
|
||||
bool _lcd_mode; |
||||
|
||||
/** Initialize the display */ |
||||
void lcd_init() |
||||
{ |
||||
// configure pins as output
|
||||
as_output(LCD_PIN_E); |
||||
as_output(LCD_PIN_RW); |
||||
as_output(LCD_PIN_RS); |
||||
_lcd_mode = 1; // force data pins to output
|
||||
_lcd_mode_w(); |
||||
|
||||
// Magic sequence to enter 4-bit mode
|
||||
_delay_ms(16); |
||||
_lcd_write_nibble(0b0011); |
||||
_lcd_clk(); |
||||
_delay_ms(5); |
||||
_lcd_clk(); |
||||
_delay_ms(5); |
||||
_lcd_clk(); |
||||
_delay_ms(5); |
||||
_lcd_write_nibble(0b0010); |
||||
_lcd_clk(); |
||||
_delay_us(100); |
||||
|
||||
// Configure the display
|
||||
lcd_write_command(LCD_IFACE_4BIT_2LINE); |
||||
lcd_write_command(LCD_DISABLE); |
||||
lcd_write_command(LCD_CLEAR); |
||||
lcd_write_command(LCD_MODE_INC); |
||||
|
||||
lcd_enable(); |
||||
} |
||||
|
||||
|
||||
|
||||
/** Send a pulse on the ENABLE line */ |
||||
void _lcd_clk() |
||||
{ |
||||
pin_up(LCD_PIN_E); |
||||
delay_ns(420); |
||||
pin_down(LCD_PIN_E); |
||||
} |
||||
|
||||
|
||||
/** Enter READ mode */ |
||||
void _lcd_mode_r() |
||||
{ |
||||
if (_lcd_mode == 1) return; // already in R mode
|
||||
|
||||
pin_up(LCD_PIN_RW); |
||||
|
||||
as_input_pu(LCD_PIN_D7); |
||||
as_input_pu(LCD_PIN_D6); |
||||
as_input_pu(LCD_PIN_D5); |
||||
as_input_pu(LCD_PIN_D4); |
||||
|
||||
_lcd_mode = 1; |
||||
} |
||||
|
||||
|
||||
/** Enter WRITE mode */ |
||||
void _lcd_mode_w() |
||||
{ |
||||
if (_lcd_mode == 0) return; // already in W mode
|
||||
|
||||
pin_down(LCD_PIN_RW); |
||||
|
||||
as_output(LCD_PIN_D7); |
||||
as_output(LCD_PIN_D6); |
||||
as_output(LCD_PIN_D5); |
||||
as_output(LCD_PIN_D4); |
||||
|
||||
_lcd_mode = 0; |
||||
} |
||||
|
||||
|
||||
/** Read a byte */ |
||||
uint8_t _lcd_read_byte() |
||||
{ |
||||
_lcd_mode_r(); |
||||
|
||||
uint8_t res = 0; |
||||
|
||||
_lcd_clk(); |
||||
res = (read_pin(LCD_PIN_D7) << 7) | (read_pin(LCD_PIN_D6) << 6) | (read_pin(LCD_PIN_D5) << 5) | (read_pin(LCD_PIN_D4) << 4); |
||||
|
||||
_lcd_clk(); |
||||
res |= (read_pin(LCD_PIN_D7) << 3) | (read_pin(LCD_PIN_D6) << 2) | (read_pin(LCD_PIN_D5) << 1) | (read_pin(LCD_PIN_D4) << 0); |
||||
|
||||
return res; |
||||
} |
||||
|
||||
|
||||
/** Write an instruction byte */ |
||||
void lcd_write_command(uint8_t bb) |
||||
{ |
||||
_lcd_wait_bf(); |
||||
pin_down(LCD_PIN_RS); // select instruction register
|
||||
_lcd_write_byte(bb); // send instruction byte
|
||||
} |
||||
|
||||
|
||||
/** Write a data byte */ |
||||
void lcd_write_data(uint8_t bb) |
||||
{ |
||||
_lcd_wait_bf(); |
||||
pin_up(LCD_PIN_RS); // select data register
|
||||
_lcd_write_byte(bb); // send data byte
|
||||
} |
||||
|
||||
|
||||
/** Read BF & Address */ |
||||
uint8_t lcd_read_bf_addr() |
||||
{ |
||||
pin_down(LCD_PIN_RS); |
||||
return _lcd_read_byte(); |
||||
} |
||||
|
||||
|
||||
/** Read CGRAM or DDRAM */ |
||||
uint8_t lcd_read_ram() |
||||
{ |
||||
pin_up(LCD_PIN_RS); |
||||
return _lcd_read_byte(); |
||||
} |
||||
|
||||
|
||||
/** Write a byte using the 8-bit interface */ |
||||
void _lcd_write_byte(uint8_t bb) |
||||
{ |
||||
_lcd_mode_w(); // enter W mode
|
||||
|
||||
_lcd_write_high(bb); |
||||
_lcd_clk(); |
||||
|
||||
_lcd_write_low(bb); |
||||
_lcd_clk(); |
||||
} |
||||
|
||||
|
||||
|
||||
/** Wait until the device is ready */ |
||||
void _lcd_wait_bf() |
||||
{ |
||||
while(lcd_read_bf_addr() & _BV(7)); |
||||
} |
||||
|
||||
|
||||
/** Send a string to LCD */ |
||||
void lcd_str(char* str_p) |
||||
{ |
||||
while (*str_p) |
||||
lcd_char(*str_p++); |
||||
} |
||||
|
||||
|
||||
/** Sedn a char to LCD */ |
||||
void lcd_char(const char c) |
||||
{ |
||||
lcd_write_data(c); |
||||
} |
||||
|
||||
|
||||
/** Set cursor position */ |
||||
void lcd_xy(const uint8_t x, const uint8_t y) |
||||
{ |
||||
lcd_set_addr(LCD_ROW_ADDR[y] + (x)); |
||||
} |
||||
|
||||
|
||||
uint8_t _lcd_old_cursor = CURSOR_NONE; |
||||
bool _lcd_enabled = false; |
||||
|
||||
/** Set LCD cursor. If not enabled, only remember it. */ |
||||
void lcd_cursor(uint8_t type) |
||||
{ |
||||
_lcd_old_cursor = (type & CURSOR_BOTH); |
||||
|
||||
if (_lcd_enabled) lcd_write_command(LCD_CURSOR_NONE | _lcd_old_cursor); |
||||
} |
||||
|
||||
|
||||
/** Display display (preserving cursor) */ |
||||
void lcd_disable() |
||||
{ |
||||
lcd_write_command(LCD_DISABLE); |
||||
_lcd_enabled = false; |
||||
} |
||||
|
||||
|
||||
/** Enable display (restoring cursor) */ |
||||
void lcd_enable() |
||||
{ |
||||
_lcd_enabled = true; |
||||
lcd_cursor(_lcd_old_cursor); |
||||
} |
||||
|
||||
|
||||
/** Define a glyph */ |
||||
void lcd_define_glyph(const uint8_t index, const uint8_t* array) |
||||
{ |
||||
lcd_set_addr_cgram(index * 8); |
||||
for (uint8_t i = 0; i < 8; ++i) { |
||||
lcd_write_data(array[i]); |
||||
} |
||||
} |
||||
|
||||
|
||||
/** Define a glyph */ |
||||
void lcd_define_glyph_pgm(const uint8_t index, const uint8_t* array) |
||||
{ |
||||
lcd_set_addr_cgram(index * 8); |
||||
for (uint8_t i = 0; i < 8; ++i) { |
||||
lcd_write_data(pgm_read_byte(&array[i])); |
||||
} |
||||
} |
||||
|
||||
|
||||
/** Set address in CGRAM */ |
||||
void lcd_set_addr_cgram(const uint8_t acg) |
||||
{ |
||||
lcd_write_command(0b01000000 | ((acg) & 0b00111111)); |
||||
} |
||||
|
||||
|
||||
/** Set address in DDRAM */ |
||||
void lcd_set_addr(const uint8_t add) |
||||
{ |
||||
lcd_write_command(0b10000000 | ((add) & 0b01111111)); |
||||
} |
||||
Loading…
Reference in new issue