From 4a013690c68e0665fa18c983f7a610a90f19b426 Mon Sep 17 00:00:00 2001
From: Robin Krens <robin@robinkrens.nl>
Date: Tue, 17 May 2022 17:53:54 +0200
Subject: [PATCH] init attiny25 setup

---
 Makefile | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 hbc.c    | 19 +++++++++++++++++++
 2 files changed, 73 insertions(+)
 create mode 100644 Makefile
 create mode 100644 hbc.c

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..27dfb39
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,54 @@
+# ATmega328P, shitty Chinese arduino clone (just an atmega328p with arduino bootloader/flasher)
+
+MCU = attiny25
+F_CPU = 8000000UL
+BAUD = 57600
+
+PROGRAMMER_TYPE = arduino
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I.
+CFLAGS = -Os -g -Wall
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
+
+LDFLAGS = -Wl,-Map,hbc.map
+TARGET_ARCH = -mmcu=$(MCU)
+
+DEPS = 
+
+ODIR = obj
+_OBJ = hbc.o
+OBJ = $(patsubst %, $(ODIR)/%,$(_OBJ))
+
+$(ODIR)/%.o: %.c $(DEPS)
+	@mkdir -p $(@D)
+	$(CC) -c $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) $< -o $@
+
+%.elf: $(OBJ)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ -o $@
+
+%.hex: %.elf
+	$(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+all: hbc.hex
+
+.PHONY: clean
+
+clean: 
+	rm -rf $(ODIR)/*.o *.hex *.elf *.map
+
+
+check-dev: 
+		$(AVRDUDE) -p m328p -c $(PROGRAMMER_TYPE) -b $(BAUD) -P /dev/ttyUSB0
+
+flash:
+	$(AVRDUDE) -p m328p -c $(PROGRAMMER_TYPE) -b $(BAUD) -P /dev/ttyUSB0 -U flash:w:flash.hex:i
+
+read-flash-bin:	
+		$(AVRDUDE) -p m328p -c $(PROGRAMMER_TYPE) -b $(BAUD) -P /dev/ttyUSB0 -U flash:r:flash.bin:r
+
diff --git a/hbc.c b/hbc.c
new file mode 100644
index 0000000..e2c06d9
--- /dev/null
+++ b/hbc.c
@@ -0,0 +1,19 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <util/delay.h>
+
+int main(void) {
+	
+	DDRB |= (1 << PB0);
+
+	while(1) {
+		//
+	}
+
+	return 0;
+
+}
-- 
2.7.4