1 files changed, 67 insertions, 0 deletions

diff --git a/firmware/target/arm/tcc780x/cowond2/button-cowond2.c b/firmware/target/arm/tcc780x/cowond2/button-cowond2.c
new file mode 100644
index 0000000000..dccdf4e8e0
--- /dev/null
+++ b/firmware/target/arm/tcc780x/cowond2/button-cowond2.c
@@ -0,0 +1,67 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2008 by Rob Purchase
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "config.h"
+#include "cpu.h"
+#include "button.h"
+#include "adc.h"
+
+void button_init_device(void)
+{
+    /* Nothing to do */
+}
+
+int button_read_device(void)
+{
+    int btn = BUTTON_NONE;
+    int adc;
+
+    if (GPIOB & 0x4)
+    {
+        adc = adc_read(ADC_BUTTONS);
+
+        /* The following contains some abitrary, but working, guesswork */
+        if (adc < 0x038) {
+            btn |= (BUTTON_MINUS | BUTTON_PLUS | BUTTON_MENU);
+        } else if (adc < 0x048) {
+            btn |= (BUTTON_MINUS | BUTTON_PLUS);
+        } else if (adc < 0x058) {
+            btn |= (BUTTON_PLUS | BUTTON_MENU);
+        } else if (adc < 0x070) {
+            btn |= BUTTON_PLUS;
+        } else if (adc < 0x090) {
+            btn |= (BUTTON_MINUS  | BUTTON_MENU);
+        } else if (adc < 0x150) {
+            btn |= BUTTON_MINUS;
+        } else if (adc < 0x200) {
+            btn |= BUTTON_MENU;
+        }
+    }
+
+    /* TODO: Read 'fake' buttons based on touchscreen quadrants. 
+       Question: How can I read from the PCF chip (I2C) in a tick task? */
+
+    if (!(GPIOA & 0x8))
+        btn |= BUTTON_HOLD;
+
+    if (!(GPIOA & 0x4))
+        btn |= BUTTON_POWER;
+
+    return btn;
+}