Move wait-for-reconnection logic inside ard-reset-arduino

When a Leonardo based board is reset, the port disappears and we need to
wait till it comes back.

Earlier this logic was handled by a separate shell script. Now the logic
is moved inside the ard-reset-arduino perl script. This is done to
reduce the number of binaries that are needed by the makefile.

Fix #95

HISTORY.md

@@ -12,6 +12,7 @@ The following is the rough list of changes that went into different versions. I
 - Remove redundant checks for ARDUINO_DIR
 - Improve avrdude and avrdude.conf path auto detection. Fix issue #48
 - Move binary sketch size verification logic inside makefile. Fix issue #54
+- Remove dependency on wait-connection-leonardo shell script. Fix issue #95
 
 ### 0.12.0 (2013-06-20)
 - Fix "generated_assembly" target, which got broken earlier. Fix issue #76 (https://github.com/matthijskooijman)

arduino-mk/Arduino.mk

@@ -468,15 +468,6 @@ ifndef RESET_CMD
     endif
 endif
 
-ifndef WAIT_CONNECTION_CMD
-    ifdef LEO_RESET
-       WAIT_CONNECTION_CMD = \
-         $(ARDMK_PATH)/wait-connection-leonardo $(call get_arduino_port)
-    else
-       WAIT_CONNECTION_CMD =
-    endif
-endif
-
 ifeq ($(BOARD_TAG),leonardo)
     ERROR_ON_LEONARDO = $(error On leonardo, raw_xxx operation is not supported)
 else
@@ -1024,7 +1015,6 @@ raw_eeprom:	$(TARGET_HEX) verify_size
 reset:
 		$(call arduino_output,Resetting Arduino...)
 		$(RESET_CMD)
-		$(WAIT_CONNECTION_CMD)
 
 # stty on MacOS likes -F, but on Debian it likes -f redirecting
 # stdin/out appears to work but generates a spurious error on MacOS at

bin/ard-reset-arduino

@@ -39,7 +39,18 @@ foreach my $dev (@ARGV)
         $p->write_settings;
         $p->close;
 
-        print STDERR "Switching to 1200 baud on $dev\n"
+        print STDERR "Forcing reset using 1200bps open/close on port $dev\n"
+            if $Opt{verbose};
+
+        # wait for it to come back
+        sleep 1;
+        while( ! -e $dev ) {
+            print STDERR "Waiting for $dev to come back\n"
+                if $Opt{verbose};
+            sleep 1;
+        }
+
+        print STDERR "$dev has come back after reset\n"
             if $Opt{verbose};
     }
     else

bin/wait-connection-leonardo

@@ -1,15 +0,0 @@
-#!/bin/bash
-
-while [ ! -e $1 ]
-do
-    echo Waiting connection at $1
-    sleep 0.2
-done
-
-sleep 1
-# necessary for me...
-# /dev/ttyACM0 used to disappear after the reset
-# but no longer now. How can I tell whether the 
-# connection is ready?
-
-echo Connection Established