From 376429dc9d60701604dcead5b19af5c8bdc4054f Mon Sep 17 00:00:00 2001
From: Jonathan Gordon <rockbox@jdgordon.info>
Date: Thu, 20 Sep 2007 08:42:06 +0000
Subject: mr-500 button driver

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14766 a1c6a512-1295-4272-9138-f99709370657
---
 .../target/arm/olympus/mrobe-500/button-mr500.c    | 65 +++++++++++++++++-----
 1 file changed, 50 insertions(+), 15 deletions(-)

(limited to 'firmware/target/arm/olympus/mrobe-500/button-mr500.c')

diff --git a/firmware/target/arm/olympus/mrobe-500/button-mr500.c b/firmware/target/arm/olympus/mrobe-500/button-mr500.c
index 9cafab5c14..388dbf0689 100644
--- a/firmware/target/arm/olympus/mrobe-500/button-mr500.c
+++ b/firmware/target/arm/olympus/mrobe-500/button-mr500.c
@@ -27,22 +27,11 @@
 #include "system.h"
 #include "backlight-target.h"
 
-static int const remote_buttons[] =
-{
-    BUTTON_NONE,        /* Headphones connected - remote disconnected */
-    BUTTON_RC_PLAY,
-    BUTTON_RC_DSP,
-    BUTTON_RC_REW,
-    BUTTON_RC_FF,
-    BUTTON_RC_VOL_UP,
-    BUTTON_RC_VOL_DOWN,
-    BUTTON_NONE,        /* Remote control attached - no buttons pressed */
-    BUTTON_NONE,        /* Nothing in the headphone socket */
-};
-
+#define BUTTON_TIMEOUT 50
 void button_init_device(void)
 {
-    /* Power, Remote Play & Hold switch */
+    /* GIO is the power button, set as input */
+    outw(inw(IO_GIO_DIR0)|0x01, IO_GIO_DIR0);
 }
 
 inline bool button_hold(void)
@@ -52,5 +41,51 @@ inline bool button_hold(void)
 
 int button_read_device(void)
 {
-    return 0;
+    char data[5], c;
+    int i = 0;
+    int btn = BUTTON_NONE, timeout = BUTTON_TIMEOUT;
+    
+    if ((inw(IO_GIO_BITSET0)&0x01) == 0)
+        btn |= BUTTON_POWER;
+        
+    uartHeartbeat();
+    while (timeout > 0)
+    {
+        c = uartPollch(BUTTON_TIMEOUT*100);
+        if (c > -1)
+        {
+            if (i && data[0] == 0xf4)
+            {
+                data[i++] = c;
+            }
+            else if (c == 0xf4)
+            {
+                data[0] = c;
+                i = 1;
+            }
+            
+            if (i == 5)
+            {
+                if (data[1]& (1<<7))
+                    btn |= BUTTON_RC_HEART;
+                if (data[1]& (1<<6))
+                    btn |= BUTTON_RC_MODE;
+                if (data[1]& (1<<5))
+                    btn |= BUTTON_RC_VOL_DOWN;
+                if (data[1]& (1<<4))
+                    btn |= BUTTON_RC_VOL_UP;
+                if (data[1]& (1<<3))
+                    btn |= BUTTON_RC_REW;
+                if (data[1]& (1<<2))
+                    btn |= BUTTON_RC_FF;
+                if (data[1]& (1<<1))
+                    btn |= BUTTON_RC_DOWN;
+                if (data[1]& (1<<0))
+                    btn |= BUTTON_RC_PLAY;
+                break;
+            }
+        }
+        timeout--;
+    }
+    return btn;
 }
-- 
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