Comment out button code

strandstring/strandstring.pde

 //
 //
-// serial_button.c
-//
-// 115200 baud FTDI connection that outputs '0' or '1' depending
-// on the state of a physical button
-//
+// 115200 baud FTDI connection
 // set lfuse to 0x5E for 20 MHz xtal
 //
 // Neil Gershenfeld
 // 12/8/10
 // Erik Strand
-// 11/26/2018
+// 11/26/2018 and beyond
 //
 #include <avr/io.h>
 #include <util/delay.h>
@@ -36,7 +32,7 @@
 #define serial_pin_out (1 << PA1)
 
 #define led_pin (1 << PB2)
-#define button_pin (1 << PA7)
+//#define button_pin (1 << PA7) // this is no longer a button
 
 #define max_buffer 25
 
@@ -158,23 +154,14 @@ void setup(void) {
     DDRB |= led_pin;
 
     // Configure button_pin as an input.
-    DDRA &= ~button_pin;
+    //DDRA &= ~button_pin;
 
     // Activate button_pin's pullup resistor.
-    PORTA |= button_pin;
+    //PORTA |= button_pin;
 }
 
 
 void loop(void) {
-    if (PINA & button_pin) {
-        // Turn off the LED.
-        PORTB &= ~led_pin;
-        //put_char(&serial_port, serial_pin_out, '0');
-    } else {
-        PORTB |= led_pin;
-        //put_char(&serial_port, serial_pin_out, '1');
-    }
-
     byte i;
     byte present = 0;
     byte type_s;
@@ -185,7 +172,9 @@ void loop(void) {
     if (!ds.search(addr)) {
         put_line(&serial_port, serial_pin_out, "No more addresses.");
         ds.reset_search();
+        PORTB |= led_pin;
         delay(250);
+        PORTB &= ~led_pin;
         return;
     }