1 files changed, 60 insertions, 0 deletions
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..a067777
--- /dev/null
+++ b/main.c
@@ -0,0 +1,60 @@
+#include <avr/io.h>
+#include <avr/delay.h>
+ 
+int main (void)
+{
+	DDRC=0x00;
+	PORTC=0x00;
+
+	DDRB=0xFF;
+	PORTB=0x55;
+
+#define OUT0 "sbi %0, 5 \n"  /* pull line to GND */
+#define OUT1 "cbi %0, 5 \n"  /* tristate the line */
+#define NOP "nop \n"
+#define NOP10 NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP
+#define NOP12 NOP10 NOP NOP
+
+#define WAIT10 "ldi r16, 1 \n rcall loop \n"
+#define WAIT34 "ldi r16, 9 \n rcall loop \n"
+
+//#define BIT0 OUT0 NOP10 NOP12 NOP12 OUT1 NOP10
+//#define BIT1 OUT0 NOP10 OUT1 NOP10 NOP12 NOP12
+
+#define BIT0 OUT0 WAIT34 OUT1 WAIT10
+#define BIT1 OUT0 WAIT10 OUT1 WAIT34
+
+	PORTB=0x55;
+
+	int temp=0;
+
+	while(1)
+	{
+		temp++;
+		PORTB=temp;
+		_delay_ms(1);
+		asm volatile(
+		BIT0
+		BIT0
+		BIT0
+		BIT0
+		BIT0
+		BIT0
+		BIT0
+		BIT0
+		BIT1
+		"rjmp done \n"
+		"loop:\n"
+		"dec r16\n"
+		"brne loop\n"
+		"ret\n"
+		"done: \n"
+		: 
+		: "I" (_SFR_IO_ADDR(DDRC)),  "I" (_SFR_IO_ADDR(PINC)) 
+		: "r16"
+		);
+	}
+
+
+	return 0; // never reached
+}