actually turn display on

code/Makefile

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+TARGET  = main
+SRCS   := $(shell find -name '*.c')
+FILES   = $(SRCS:%.c=%) #main uart avrIOhelper/io-helper #uart#hier alle c-Datein reinschreiben, trennung durch "  " und ohne .c-Endung
+MCU     = atmega328p 
+PROGC	= m328p
+CC      = avr-gcc
+#TOOL    = stk500 -P /dev/ttyUSB0
+TOOL    = atmelice_isp
+#TOOL    = avrispmkii
+#TOOL    = usbasp-clone
+
+BUILDDIR = Builds
+
+DEFINES = -DF_CPU=2000000UL -DLCD_PORT=PORTD -DLCD_DDR=DDRD
+
+CFLAGS  =-mmcu=$(MCU) -O2 -Wall -Wpedantic $(DEFINES) -std=c99 -ffunction-sections -fdata-sections
+LDFLAGS =-mmcu=$(MCU) -Wl,--gc-sections
+
+LDFILES = $(foreach FILE,$(FILES),$(BUILDDIR)/$(FILE).o)
+
+all: clean $(BUILDDIR)/$(TARGET).elf
+
+$(BUILDDIR)/%.o: %.c
+	mkdir -p $(dir $@)
+	$(CC) $(CFLAGS) -c $< -o $(BUILDDIR)/$*.o
+
+$(BUILDDIR)/$(TARGET).elf: $(LDFILES)
+	mkdir -p $(dir $@)
+	$(CC) $(LDFLAGS) $(LDFILES) -o $(BUILDDIR)/$(TARGET).elf
+
+$(BUILDDIR)/$(TARGET).hex : $(BUILDDIR)/$(TARGET).elf
+	 avr-objcopy -j .data -j .text -O ihex $< $@
+
+fuse: 
+	avrdude -p $(PROGC) -c $(TOOL) -U lfuse:w:0xE8:m -U hfuse:w:0xD1:m
+
+load: $(BUILDDIR)/$(TARGET).hex
+	avrdude -p $(PROGC) -c $(TOOL) -U flash:w:$(BUILDDIR)/$(TARGET).hex -v -B 125kHz
+
+program: clean load
+
+reset:
+	avrdude -p $(PROGC) -c $(TOOL)
+	
+size: $(BUILDDIR)/$(TARGET).elf
+	avr-size -C --mcu=$(MCU) $(BUILDDIR)/$(TARGET).elf
+
+.PHONY=clean
+clean:
+	rm -rf $(BUILDDIR)
+
+
+#Fuse m1284p external Osz. Long startuptime
+#  avrdude -c usbasp-clone -p m1284p -U lfuse:w:0xff:m -U hfuse:w:0xd9:m -U efuse:w:0xff:m
+
+#Fuse m1284p internal Osz. Long startuptime
+#  avrdude -c usbasp-clone -p m1284p -U lfuse:w:0xe2:m -U hfuse:w:0xd9:m -U efuse:w:0xff:m
+
+

code/avr-hd44780

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+Subproject commit 1360f8dd0192444bee448bbab97a0ecb73941c90

code/main.c

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+#include <avr/io.h>
+#include <util/delay.h>
+#include "avr-hd44780/lcd.h"
+
+int main(void){
+	DDRC |= 1<<0;
+	DDRC |= 1<<1;
+	DDRD |= 1<<7;
+
+	lcd_init();
+	lcd_on();
+	lcd_clear();
+	lcd_puts("test");
+
+	while(1){
+		PORTC ^= 1<<0;
+		_delay_ms(1000);
+		PORTC ^= 1<<1;
+	}
+
+}