From 90a4d4a1353dd7b514fe4ef10c1ed2c6f24cadbe Mon Sep 17 00:00:00 2001
From: justanothercatgirl <sotov2070@gmail.com>
Date: Sun, 11 May 2025 22:21:06 +0300
Subject: temp commit

---
 Makefile | 23 +++++++++++++----------
 def.s    | 19 +++++++++++++++++++
 i2c.s    | 15 +++++++++++++++
 timer.s  | 23 +----------------------
 4 files changed, 48 insertions(+), 32 deletions(-)
 create mode 100644 def.s
 create mode 100644 i2c.s

diff --git a/Makefile b/Makefile
index 6b8f6b4..9bba455 100644
--- a/Makefile
+++ b/Makefile
@@ -12,25 +12,28 @@ DUDEFLAGS += -c $(PROGRAMMER) -p $(MCU) -P $(MCUPATH)
 # timer.s file
 TARGET ?= timer
 
-.PHONY: flash dump-timer clean all
-
 all: $(TARGET).hex
 
+.PHONY: flash dump clean all
+.SUFFIXES: 
+
+.PRECIOUS: $(TARGET).o $(TARGET).elf
+
 flash: $(TARGET).hex
 	test $(shell id -u) = 0
 	$(DUDE) $(DUDEFLAGS) -U flash:w:$<
 
-%.hex: %
-	$(OBJ)copy -O ihex $< $@
+%.o: %.s
+	$(AS) -mmcu=$(MCU) -o $@ $<
 
-%: %.o
+%.elf: %.o
 	$(LD) $(LDFLAGS) -o $@ $<
 
-%.o: %.s
-	$(AS) -mmcu=$(MCU) -o $@ $<
+%.hex: %.elf
+	$(OBJ)copy -O ihex $< $@
 
-dump-%: %
-	$(OBJ)dump -d timer
+dump: $(TARGET).elf
+	$(OBJ)dump -d 
 
 clean:
-	rm *.o *.hex *.elf *.bin timer
+	$(RM) *.o *.hex *.elf *.bin timer
diff --git a/def.s b/def.s
new file mode 100644
index 0000000..d4fdd44
--- /dev/null
+++ b/def.s
@@ -0,0 +1,19 @@
+.equ PINB,	0x03
+.equ DDRB,	0x04
+.equ PORTB,	0x05
+.equ PIND,	0x09
+.equ DDRD,	0x0A
+.equ PORTD,	0x0B
+.equ TIFR0,	0x15
+.equ ADDR,	0x256
+.equ SPL,	0x3D
+.equ SPH,	0x3E
+.equ SREG,	0x3F
+.equ TCCR0A,	0x0024
+.equ TCCR0B,	0x0025
+.equ TCNT0,	0x0026
+.equ OCR0A,	0x0027
+.equ TIMSK0,	0x006E
+.equ STOFL,	0xFF
+.equ STOFH,	0x08
+.equ TOIE0,	1
diff --git a/i2c.s b/i2c.s
new file mode 100644
index 0000000..83ef974
--- /dev/null
+++ b/i2c.s
@@ -0,0 +1,15 @@
+i2cwait:
+	in r17, TWCR
+	sbrs r17, TWINT
+	rjmp i2cwait
+; r16 : addr
+i2cstart:
+	ldi r17, (1 << TWSTA) | (1 << TWEN) | (1 << TWINT)
+	out TWCR, r17
+	rcall i2cwait
+	out TWDR, r16
+	andi r17, ~(1 << TWSTA)
+	out TWCR, r17
+	rcall i2cwait
+; r16: data 
+writebyte:
diff --git a/timer.s b/timer.s
index 94e97ae..c62b2b5 100644
--- a/timer.s
+++ b/timer.s
@@ -1,22 +1,4 @@
-.equ PINB,	0x03
-.equ DDRB,	0x04
-.equ PORTB,	0x05
-.equ PIND,	0x09
-.equ DDRD,	0x0A
-.equ PORTD,	0x0B
-.equ TIFR0,	0x15
-.equ ADDR,	0x256
-.equ SPL,	0x3D
-.equ SPH,	0x3E
-.equ SREG,	0x3F
-.equ TCCR0A,	0x0024
-.equ TCCR0B,	0x0025
-.equ TCNT0,	0x0026
-.equ OCR0A,	0x0027
-.equ TIMSK0,	0x006E
-.equ STOFL,	0xFF
-.equ STOFH,	0x08
-.equ TOIE0,	1
+.include "def.s"
 
 .equ LOC,	0x128
 .equ FREQ,	0x80
@@ -71,7 +53,6 @@ tmrint:
 	eor r20, r20
 .stt:
 	sts LOC, r20
-.exit:
 	pop r21
 	pop r20
 	pop r19
@@ -94,7 +75,6 @@ main:
 	sts ADDR, r1
 	rjmp .loop
 .finloop:
-
 	in r13, PINB
 	in r14, PORTB
 
@@ -107,4 +87,3 @@ main:
 
 	rjmp main
 
-
-- 
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