X-Git-Url: http://nitlanguage.org

diff --git a/contrib/physical_interface_for_mpd_on_rpi/physical_interface_for_mpd_on_rpi.nit b/contrib/physical_interface_for_mpd_on_rpi/physical_interface_for_mpd_on_rpi.nit
index 79b52ee..335444a 100644
--- a/contrib/physical_interface_for_mpd_on_rpi/physical_interface_for_mpd_on_rpi.nit
+++ b/contrib/physical_interface_for_mpd_on_rpi/physical_interface_for_mpd_on_rpi.nit
@@ -29,23 +29,29 @@ import mpd
 import privileges
 
 class PhysicalInterface
-	var mpd = new MPDConnection("localhost", 6600, "password")
+	var mpd = new MPDConnection(server, port, password)
+	protected fun password: String do return "password"
+	fun server: String do return "localhost"
+	fun port: Int do return 6600
 
-	var debug_led: RPiPin
+	var but_play: Switch is noinit
+	var but_playlist_a: Switch is noinit
 
-	var but_play: Switch
-	var but_playlist_a: Switch
-
-	var vol: RotaryEncoder
+	var vol: RotaryEncoder is noinit
 	var vol_step = 2
 
-	var lcd: HD44780
+	var lcd: HD44780 is noinit
+
+	var lcd_backlight: RPiPin is noinit
+	var lcd_backlight_delay = 1000
+
+	var buzzer: Buzzer is noinit
 
 	init
 	do
 		# commandline options for privileges drop
 		var opts = new OptionContext
-		var opt_ug = new OptionDropPrivileges
+		var opt_ug = new OptionUserAndGroup.for_dropping_privileges
 		#opt_ug.mandatory = true
 		opts.add_option(opt_ug)
 
@@ -64,11 +70,6 @@ class PhysicalInterface
 		var user_group = opt_ug.value
 		if user_group != null then user_group.drop_privileges
 
-		# Debug LED
-		debug_led = new RPiPin.p1_11
-		debug_led.fsel = new FunctionSelect.outp
-		debug_led.write(false)
-
 		# Play button
 		but_play = new Switch(new RPiPin.p1_13, new PUDControl.down)
 
@@ -97,12 +98,20 @@ class PhysicalInterface
 		lcd = new HD44780(lcd_rs, lcd_en, lcd_d4, lcd_d5, lcd_d6, lcd_d7)
 		lcd.setup
 		lcd.clear
+
+		lcd_backlight = new RPiPin.p1_18
+		lcd_backlight.fsel = new FunctionSelect.outp
+
+		# Buzzer
+		var buzzer_pin = new RPiPin.p1_11
+		buzzer_pin.fsel = new FunctionSelect.outp
+		buzzer = new Buzzer(buzzer_pin)
 	end
 
 	fun run
 	do
-		var led_on = false
 		var tick = 0
+		var last_event = 0
 		loop
 			var force_lcd_update = false
 
@@ -143,6 +152,7 @@ class PhysicalInterface
 					lcd.text = "No song playing"
 				else
 					if status.playing then
+						last_event = tick
 						status_char = ">"
 					else status_char = "#"
 
@@ -154,6 +164,16 @@ class PhysicalInterface
 				end
 			end
 
+			# manage backlight
+			if force_lcd_update then last_event = tick
+
+			var diff_with_last_event = tick - last_event
+			if diff_with_last_event == 0 then
+				lcd_backlight.write(true)
+			else if diff_with_last_event == lcd_backlight_delay then
+				lcd_backlight.write(false)
+			end
+
 			10.bcm2835_delay
 			tick += 1
 		end
@@ -179,12 +199,16 @@ class PhysicalInterface
 			print "stopped -> play"
 			mpd.play
 		end
+
+		bell
 	end
 
 	fun play_playlist_a
 	do
 		mpd.load_playlist("alexis")
 	end
+
+	fun bell do buzzer.buzz(1.5, 20)
 end
 
 var phy = new PhysicalInterface