From 18239b831d466e4e3822528462e1a6c00d702e93 Mon Sep 17 00:00:00 2001
From: Björn Stenberg <bjorn@haxx.se>
Date: Mon, 12 Aug 2002 12:44:18 +0000
Subject: Remote control support added

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1685 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/drivers/button.h |   4 ++
 firmware/drivers/serial.c | 111 +++++++++++++++++++++++++++++++++-------------
 firmware/drivers/serial.h |   8 +---
 3 files changed, 84 insertions(+), 39 deletions(-)

(limited to 'firmware/drivers')

diff --git a/firmware/drivers/button.h b/firmware/drivers/button.h
index 035fedd739..6563f1bc41 100644
--- a/firmware/drivers/button.h
+++ b/firmware/drivers/button.h
@@ -38,6 +38,10 @@ int button_set_release(int newmask);
 #define	BUTTON_LEFT		0x0040
 #define	BUTTON_RIGHT		0x0080
 
+/* remote control buttons */
+#define BUTTON_VOL_UP           0x1000
+#define BUTTON_VOL_DOWN         0x1001
+
 /* Button modifiers */
 #define	BUTTON_REPEAT		0x4000
 #define	BUTTON_REL		0x8000
diff --git a/firmware/drivers/serial.c b/firmware/drivers/serial.c
index ca69147cd3..ee83e2a474 100644
--- a/firmware/drivers/serial.c
+++ b/firmware/drivers/serial.c
@@ -7,7 +7,7 @@
  *                     \/            \/     \/    \/            \/
  * $Id$
  *
- * Copyright (C) 2002 by Alan Korr
+ * Copyright (C) 2002 by Alan Korr & Nick Robinson
  *
  * 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.
@@ -16,54 +16,101 @@
  * KIND, either express or implied.
  *
  ****************************************************************************/
-
+#include <stdlib.h>
+#include "button.h"
+#include "config.h"
+#include "sh7034.h"
+#include "system.h"
+#include "kernel.h"
+#include "backlight.h"
+#include "adc.h"
+#include "lcd.h"
 #include "serial.h"
 
-static int serial_byte,serial_flag;
+/* Recieved byte identifiers */
+#define PLAY  0xC1
+#define STOP  0xC2
+#define PREV  0xC4
+#define NEXT  0xC8
+#define VOLUP 0xD0
+#define VOLDN 0xE0
 
-void serial_putc (char byte) 
-{
-    while (!(SSR1 & 0x80)); /* Wait for TDRE */
-    TDR1 = byte;
-    SSR1 &= 0x80; /* Clear TDRE */
-}
+void serial_setup (void) 
+{ 
+    char dummy;
+    int i;
+    int j;
+    dummy = SSR1;
+    SSR1=0;
+    SMR1 = 0x00;
+    SCR1=0;
+    BRR1 = (FREQ/(32*9600))-1;
+	
+    /* let the hardware settle */
+    for (i = 0; i < 1000; i++)
+        j++;
+
+    SCR1 = 0x50;
+
+    /* This enables the serial Rx interrupt*/
+    IPRE = (IPRE & 0x0FFF) | 0x8000; /* Set to medium priority */
 
-void serial_puts (char const *string) 
-{
-    int byte;
-    while ((byte = *string++))
-	serial_putc (byte);
 }
 
-int serial_getc( void )
+static void process_byte(char byte)
 {
-    int byte;
-    while (!serial_flag);
-    byte = serial_byte;
-    serial_flag = 0;
-    serial_putc (byte);
-    return byte;
-}
+    int btn = 0;
+
+    switch (byte)
+    {
+        case STOP:
+#ifdef HAVE_RECORDER_KEYPAD
+            btn = BUTTON_OFF;
+#else
+            btn = BUTTON_STOP;
+#endif
+            break;
+
+        case PLAY:
+            btn = BUTTON_PLAY;
+            break;
+
+        case VOLUP:
+            btn = BUTTON_VOL_UP;
+            break;
+
+        case VOLDN:
+            btn = BUTTON_VOL_DOWN;
+            break;
+
+        case PREV:
+            btn = BUTTON_LEFT;
+            break;
+
+        case NEXT:
+            btn = BUTTON_RIGHT;
+            break;
+    }
 
-void serial_setup (int baudrate) 
-{ 	
-    SCR1 = 0;
-    SSR1 = 0;
-    SMR1 = 0;
-    BRR1 = (FREQ/(32*baudrate))-1;
-    SCR1 = 0x70;
+    if ( btn ) {
+        queue_post(&button_queue, btn, NULL);
+        backlight_on();
+        queue_post(&button_queue, btn | BUTTON_REL, NULL);
+    }
 }
 
 #pragma interrupt
 void REI1 (void)
 {
-    SSR1 &= 0x10; /* Clear FER */
+    SSR1 = SSR1 & ~0x10; /* Clear FER */
+    SSR1 = SSR1 & ~0x40; /* Clear RDRF */
 }
 
 #pragma interrupt
 void RXI1 (void)
 {
+    char serial_byte;
     serial_byte = RDR1;
-    serial_flag = 1;
-    SSR1 &= 0x40; /* Clear RDRF */
+    SSR1 = SSR1 & ~0x40; /* Clear RDRF */
+    process_byte(serial_byte);
 }
diff --git a/firmware/drivers/serial.h b/firmware/drivers/serial.h
index eac02e42e4..d13b785b9d 100644
--- a/firmware/drivers/serial.h
+++ b/firmware/drivers/serial.h
@@ -20,12 +20,6 @@
 #ifndef __SERIAL_H__
 #define __SERIAL_H__
 
-#include <sh7034.h>
-#include <system.h>
-
-extern void serial_putc (char);
-extern void serial_puts (char const *); 
-extern int  serial_getc (void);
-extern void serial_setup (int); 
+extern void serial_setup (void);
 
 #endif
-- 
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