1 files changed, 74 insertions, 0 deletions
diff --git a/firmware/target/arm/rk27xx/ma/button-ma.c b/firmware/target/arm/rk27xx/ma/button-ma.c
new file mode 100644
index 0000000000..f8da786e4f
--- /dev/null
+++ b/firmware/target/arm/rk27xx/ma/button-ma.c
@@ -0,0 +1,74 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2013 Andrew Ryabinin
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "config.h"
+#include "system.h"
+#include "button.h"
+#include "adc.h"
+#include "backlight.h"
+#include "pca9555.h"
+
+extern unsigned short pca9555_in_ports;
+
+/* upper bounds of key's voltage values */
+#define ADV_KEYUP       0x05B + 0x10
+#define ADV_KEYDOWN     0x0F3 + 0x10
+#define ADV_KEYLEFT     0x190 + 0x10
+#define ADV_KEYRIGHT    0x22C + 0x10
+#define ADV_KEYMENU     0x2CA + 0x10
+
+
+void button_init_device(void) {
+    GPIO_PCCON &= ~(1<<1);
+    pca9555_init();
+}
+
+int button_read_device(void) {
+    int adc_val = adc_read(ADC_BUTTONS);
+    int button = 0;
+
+    if (adc_val < ADV_KEYLEFT) {
+        if (adc_val < ADV_KEYDOWN) {
+            if (adc_val < ADV_KEYUP) {
+                button = BUTTON_UP;
+            } else {
+                button =  BUTTON_DOWN;
+            }
+        } else {
+            button = BUTTON_LEFT;
+        }
+    } else {
+        if (adc_val < ADV_KEYRIGHT) {
+            button = BUTTON_RIGHT;
+        } else if (adc_val < ADV_KEYMENU) {
+            button = BUTTON_MENU;
+        }
+    }
+
+    if (GPIO_PCDR & (1<<1)) {
+        button |= BUTTON_PLAY;
+    }
+    if (((GPIO_PFDR&(1<<2)) == 0) &&
+        ((pca9555_in_ports & (1<<15)) == 0)) {
+        button |= BUTTON_BACK;
+    }
+    return button;
+}