initial thingies

.vscode/c_cpp_properties.json

@@ -0,0 +1,32 @@
+{
+    "configurations": [
+        {
+            "includePath": [
+                "/usr/avr/include"
+            ],
+            "intelliSenseMode": "linux-gcc-x64",
+            "compilerPath": "/usr/lib64/ccache/clang",
+            "cStandard": "c17",
+            "cppStandard": "c++17"
+        },
+        {
+            "name": "AVR",
+            "intelliSenseMode": "${default}",
+            "compilerPath": "",
+            "cStandard": "${default}",
+            "cppStandard": "${default}",
+            "includePath": [],
+            "compilerArgs": [
+                "-g",
+                "-Os",
+                "-Wall",
+                "-Wextra",
+                "-fpermissive",
+                "-fno-exceptions",
+                "-fno-threadsafe-statics",
+                "-pipe"
+            ]
+        }
+    ],
+    "version": 4
+}

Makefile

@@ -0,0 +1,46 @@
+TARGET=main
+MCU=atmega2560
+SOURCES=main.c
+
+PORT=/dev/ttyACM0
+BAUD=115200
+
+OBJECTS=$(SOURCES:.c=.o)
+CFLAGS=-c -Os
+LDFLAGS=
+
+LIB=-L/usr/avr/lib
+INC=-I/usr/avr/include
+
+yeet: hex eeprom program clean
+
+hex: $(TARGET).hex
+
+eeprom: $(TARGET)_eeprom.hex
+
+$(TARGET).hex: $(TARGET).elf
+	avr-objcopy -O ihex -j .data -j .text $(TARGET).elf $(TARGET).hex
+
+$(TARGET)_eeprom.hex: $(TARGET).elf
+	avr-objcopy -O ihex -j .eeprom --change-section-lma .eeprom=1 $(TARGET).elf $(TARGET)_eeprom.hex
+
+$(TARGET).elf: $(OBJECTS)
+	avr-gcc $(LDFLAGS) $(INC) $(LIB) -mmcu=$(MCU) $(OBJECTS) -o $(TARGET).elf
+
+.c.o:
+	avr-gcc $(CFLAGS) $(INC) $(LIB) -mmcu=$(MCU) $< -o $@
+
+size:
+	avr-size --mcu=$(MCU) -C $(TARGET).elf
+
+program:
+	avrdude -p$(MCU) -P$(PORT) -b$(BAUD) -v -V -cwiring -D "-Uflash:w:$(TARGET).hex:i"
+
+clean_tmp:
+	rm -rf *.o
+	rm -rf *.elf
+
+clean:
+	rm -rf *.o
+	rm -rf *.elf
+	rm -rf *.hex

main.c

@@ -0,0 +1,16 @@
+#define __AVR_ATmega2560__
+#define F_CPU 16000000UL
+
+#include <avr/io.h>
+#include <util/delay.h>
+
+void main() {
+    DDRB = 0b10000000;
+
+    while(1) {
+        PORTB = 0b10000000;
+        _delay_ms(500);
+        PORTB = 0b00000000;
+        _delay_ms(500);
+    }
+}