initial commit

Makefile

@@ -0,0 +1,59 @@
+TARGET  = main
+SRCS   := $(shell find -name '*.c')
+FILES   = $(SRCS:%.c=%) #main uart avrIOhelper/io-helper #uart#hier alle c-Datein reinschreiben, trennung durch "  " und ohne .c-Endung
+MCU     = atmega32
+PROGC	= m32
+CC      = avr-gcc
+TOOL    = stk500 -P /dev/ttyUSB0
+#TOOL    = atmelice_isp
+#TOOL    = avrispmkii
+#TOOL    = usbasp-clone
+
+BUILDDIR = Builds
+
+DEFINES = -I . -IInternet/MQTT -I Internet/MQTT/MQTTPacket/src -I Ethernet/W5500 -I Ethernet -DF_CPU=16000000UL -D_WIZCHIP_=W5100
+ 
+CFLAGS  =-mmcu=$(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 4MHz
+
+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
+
+

compile_flags.txt

@@ -0,0 +1,18 @@
+-D
+__AVR_ATmega32__
+-D
+F_CPU=16000000UL
+-D
+_WIZCHIP_=W5100
+-I
+/usr/lib/avr/include
+-I
+Internet
+-I
+Internet/MQTT
+-I
+Internet/MQTT/MQTTPacket/src
+-I
+Ethernet
+-I
+Ethernet/W5500

main.c

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+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <stdint.h>
+#include <util/delay.h>
+
+uint8_t font[] = {
+    0xEE,
+    0x82,
+    0xDC,
+    0xD6,
+    0xB2,
+    0x76,
+    0x7E,
+    0xC2,
+    0xFE,
+    0xF6,
+};
+
+uint8_t display[4];
+
+void timer0_init()
+{
+    TCCR0 = (1<<WGM01); //TIMER0 SET-UP: CTC MODE
+    TCCR0 = (1<<CS01)|(1<<CS00); // PS 1:64
+    OCR0 = 249; // 1ms reach for clear (16mz:64=>250kHz:250-=>1kHz)
+    TIMSK |= 1<<OCIE0;     //IRQ on TIMER0 output compareA
+}
+
+int main(void){
+    DDRB |= _BV(3) | _BV(2) | _BV(1) | _BV(0);
+    DDRD = 0xFC;
+    DDRA = 0x03 << 4;
+    DDRC = 0xFE;
+
+    display[3] = font[1];
+    display[2] = font[3];
+    display[1] = font[3];
+    display[0] = font[7];
+
+    timer0_init();
+    sei();
+
+    while(1){
+    }
+
+}
+
+ISR(TIMER0_COMP_vect)                             
+{
+    if(PORTB & 0x01){
+        PORTB = 1<<1 | 1<<3;
+        PORTD = display[3] & 0xFC;
+        PORTA = (display[3] & 0x03) << 4;
+        PORTC = display[1];
+    }
+    else{
+        PORTB = 1<<0 | 1<<2;
+        PORTD = display[2] & 0xFC;
+        PORTA = (display[2] & 0x03) << 4;
+        PORTC = display[0];
+    }
+}