From faacc869355202efac7c72b2d0b35dfc27aaa974 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Sun, 1 Jun 2014 22:25:17 +0000
Subject: added gpio subsystem


diff --git a/software/rhmixxx/Makefile b/software/rhmixxx/Makefile
index 1e4b67c..7b31d1f 100644
--- a/software/rhmixxx/Makefile
+++ b/software/rhmixxx/Makefile
@@ -21,7 +21,7 @@
 
 NAME := rhmixxx
 BOARD_TYPE := rhmixxx
-OBJ := $(NAME).o keypad.o eventqueue.o
+OBJ := $(NAME).o keypad.o eventqueue.o gpio.o
 LIBS := util led lufa-descriptor-midi
 EXTERNAL_LIBS := lufa
 
diff --git a/software/rhmixxx/gpio.c b/software/rhmixxx/gpio.c
new file mode 100644
index 0000000..6edf376
--- /dev/null
+++ b/software/rhmixxx/gpio.c
@@ -0,0 +1,38 @@
+/*
+ *  rhmidi
+ *
+ *  Copyright (C) 2014 Christian Pointner <equinox@helsinki.at>
+ *
+ *  This file is part of rhmidi.
+ *
+ *  rhmidi is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  rhmidi is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with rhmidi. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <avr/io.h>
+#include "gpio.h"
+
+#define GPIO_PIN PINE
+#define GPIO_PORT PORTE
+#define GPIO_DDR DDRE
+
+void gpio_init(void)
+{
+  GPIO_DDR = 0x0F;
+  GPIO_PORT = 0xFA;
+}
+
+void gpio_task(void)
+{
+  GPIO_PORT ^= 0x0F;
+}
diff --git a/software/rhmixxx/gpio.h b/software/rhmixxx/gpio.h
new file mode 100644
index 0000000..58a3fe4
--- /dev/null
+++ b/software/rhmixxx/gpio.h
@@ -0,0 +1,28 @@
+/*
+ *  rhmidi
+ *
+ *  Copyright (C) 2014 Christian Pointner <equinox@helsinki.at>
+ *
+ *  This file is part of rhmidi.
+ *
+ *  rhmidi is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  rhmidi is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with rhmidi. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef RHMIXXX_gpio_h_INCLUDED
+#define RHMIXXX_gpio_h_INCLUDED
+
+void gpio_init(void);
+void gpio_task(void);
+
+#endif
diff --git a/software/rhmixxx/rhmixxx.c b/software/rhmixxx/rhmixxx.c
index 4e591d6..106c64a 100644
--- a/software/rhmixxx/rhmixxx.c
+++ b/software/rhmixxx/rhmixxx.c
@@ -74,6 +74,7 @@ void EVENT_USB_Device_ControlRequest(void)
 #include "util.h"
 #include "keypad.h"
 #include "eventqueue.h"
+#include "gpio.h"
 
 static void process_incoming_midi(void)
 {
@@ -137,6 +138,7 @@ int main(void)
   cpu_init();
   eventqueue_init();
   keypad_init();
+  gpio_init();
 
   USB_Init();
   sei();
@@ -145,6 +147,7 @@ int main(void)
     process_incoming_midi();
 
     keypad_task();
+    gpio_task();
 
     process_outgoing_midi();
 
-- 
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