.

listen-python

@@ -0,0 +1,16 @@
+#!/usr/bin/python
+
+import serial, string
+
+output = " "
+ser = serial.Serial('/dev/ttyUSB0', 9600, 8, 'N', 1, timeout=1)
+while True:
+  while output != "":
+    output = ser.read(1)
+    print len(output)
+    try:
+        print int(output)
+    except ValueError:
+        print ":".join("{:02x}".format(ord(c)) for c in output)
+        print output
+  output = " "

listen.sh

@@ -1,6 +1,6 @@
 #stty -F /dev/ttyUSB0 cs8 9600 ignbrk -brkint -icrnl -imaxbel -opost -onlcr -isig -icanon -iexten -echo -echoe -echok -echoctl -echoke noflsh -ixon -crtscts
 
-stty -F /dev/ttyUSB0 9600 -parenb -parodd cs8 -hupcl \
+sudo stty -F /dev/ttyUSB0 9600 -parenb -parodd cs8 -hupcl \
 -cstopb cread clocal -crtscts -iuclc -ixany -imaxbel \
 -iutf8 -opost -olcuc -ocrnl -onlcr -onocr -onlret -ofill \
  -ofdel nl0 cr0 tab0 bs0 vt0 ff0 -isig -icanon -iexten \
@@ -8,4 +8,4 @@ stty -F /dev/ttyUSB0 9600 -parenb -parodd cs8 -hupcl \
 -echoctl -echoke
 
 
-tail -f /dev/ttyUSB0
+sudo tail -f /dev/ttyUSB0

main.c

@@ -3,8 +3,11 @@
 #include <stdio.h>
 #include <stdarg.h>
 #include <util/setbaud.h>
+
 #define LED PORTD2
-#define WIRE PORTD3
+#define PULL PORTD3
+#define ENABLE PORTD5
+#define DIRECTION PORTD6
 
 
 void uart_init() {
@@ -35,6 +38,7 @@ void uart_putstr(char *data) {
 }
 
 
+
 int main(void) {
     
     uart_init();
@@ -42,20 +46,24 @@ int main(void) {
 	DDRC &= ~(1<<0); // Input
 	PORTC |= (1<<0); // Enable Internal Pull Up (Setting it to HIGH)
 
-    DDRD |= (1 << WIRE);
+//    DDRD |= (1 << ENABLE);
+    DDRD = DDRD | 0xFC;
+   
+    PORTD |= _BV(ENABLE);
+    PORTD |= _BV(DIRECTION);
    
     for(;;){
             
-        uart_putstr("hello\n");
-        _delay_ms(900);
-        PORTD |= (1 << WIRE);
-        _delay_ms(900);
-        PORTD &= (0 << WIRE);
+//        uart_putstr("hello\n");
+        _delay_ms(400);
+        PORTD |= _BV(PULL);
+        _delay_ms(400);
+        PORTD &= ~_BV(PULL);
     
-        uint8_t port_value = 0;
-        port_value = PINC & (1 << 0);
+        uint8_t port_value = 2;
+//        port_value = PINC & (1 << 0);
         uart_putchar((char)port_value);
-        uart_putstr("\n");
+//        uart_putchar((char)'\n');
     }
 
 }