From 67debd24e340f8b3221b1435ff7ee175113fe08a Mon Sep 17 00:00:00 2001
From: redxef <federanko.manuel@gmail.com>
Date: Tue, 12 Jul 2022 20:14:59 +0200
Subject: [PATCH] Initial commit.

---
 .gitignore |  5 +++++
 Makefile   | 32 ++++++++++++++++++++++++++++++++
 main.c     | 14 ++++++++++++++
 main.h     |  0
 4 files changed, 51 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Makefile
 create mode 100644 main.c
 create mode 100644 main.h

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0504f92
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+.cache/
+*.hex
+*.elf
+*.o
+compile_commands.json
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..98461ad
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,32 @@
+PREFIX := avr-
+CFLAGS_COMMON := -I/usr/avr/include/
+CFLAGS_CPU := -DF_CPU=20000000UL -mmcu=atmega328p -Os
+CFLAGS := $(CFLAGS_COMMON) $(CFLAGS_CPU)
+LDFLAGS_COMMON := -I/usr/avr/include/
+LDFLAGS_CPU := -mmcu=atmega328p
+LDFLAGS := $(LDFLAGS_COMMON) $(LDFLAGS_CPU)
+CC := $(PREFIX)gcc
+
+build: main.hex
+
+flash: main.hex
+	sudo avrdude -FV -c arduino -p ATmega328p -P /dev/ttyUSB0 -b 57600 -U flash:w:$<
+
+clean:
+	$(RM) *.hex *.elf *.o
+
+bear: compile_commands.json
+
+compile_commands.json: clean
+	bear -- make build
+
+main.hex: main.elf
+	$(PREFIX)objcopy -O ihex -R .eeprom $< $@
+
+main.elf: main.o
+	$(CC) -w $(LDFLAGS) -o $@ $<
+
+%.o: %.c %.h
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+.PHONY: build flash clean bear
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..6ab14e0
--- /dev/null
+++ b/main.c
@@ -0,0 +1,14 @@
+#include <avr/io.h>
+#include <util/delay.h>
+
+int main(void) {
+  DDRD = 255;
+
+  while (1) {
+    PORTD = 0b00001000;
+    _delay_ms(100);
+    PORTD = 0;
+    _delay_ms(100);
+  }
+  return 0;
+}
diff --git a/main.h b/main.h
new file mode 100644
index 0000000..e69de29