From 77949a52f64365aa603ad64a7c2d68f091fbfe13 Mon Sep 17 00:00:00 2001
From: Erick Ahmed <engineering@erickahmed.com>
Date: Sat, 20 Dec 2025 18:41:12 +0100
Subject: [PATCH] Add Makefile

---
 src/Makefile | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 src/Makefile

diff --git a/src/Makefile b/src/Makefile
new file mode 100644
index 0000000..2d553b4
--- /dev/null
+++ b/src/Makefile
@@ -0,0 +1,21 @@
+MCU    = attiny85
+# TODO: change frequency after moving to external oscillator
+F_CPU  = 1000000UL
+TARGET = main
+
+CC      = avr-gcc
+OBJCOPY = avr-objcopy
+
+# check if this is legit with assembly code only
+CFLAGS  = -mmcu=$(MCU) -Wall -Os -DF_CPU=$(F_CPU)
+
+all: $(TARGET).hex
+
+$(TARGET).elf: $(TARGET).S
+	$(CC) $(CFLAGS) -o $@ $<
+
+$(TARGET).hex: $(TARGET).elf
+	$(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+clean:
+	rm -f *.elf *.hex