From 0f387e913abb2cb53578088246eff81eca7beaf2 Mon Sep 17 00:00:00 2001
From: Linus Nielsen Feltzing <linus@haxx.se>
Date: Wed, 4 Sep 2002 12:34:13 +0000
Subject: Added (disabled) screendump feature

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@2172 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/drivers/serial.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 53 insertions(+), 1 deletion(-)

(limited to 'firmware')

diff --git a/firmware/drivers/serial.c b/firmware/drivers/serial.c
index 112e45c1e4..91e2a6911f 100644
--- a/firmware/drivers/serial.c
+++ b/firmware/drivers/serial.c
@@ -27,7 +27,7 @@
 #include "lcd.h"
 #include "serial.h"
 
-/* Recieved byte identifiers */
+/* Received byte identifiers */
 #define PLAY  0xC1
 #define STOP  0xC2
 #define PREV  0xC4
@@ -35,6 +35,12 @@
 #define VOLUP 0xD0
 #define VOLDN 0xE0
 
+#ifdef SCREENDUMP
+#define SCRDMP 0xF0
+
+static void screen_dump(void);
+#endif
+
 void serial_setup (void) 
 { 
     char dummy;
@@ -86,6 +92,12 @@ static void process_byte(int byte)
         case NEXT:
             btn = BUTTON_RIGHT;
             break;
+            
+#ifdef SCREENDUMP
+        case SCRDMP:
+            screen_dump();
+            break;
+#endif
     }
 
     if ( btn ) {
@@ -110,3 +122,43 @@ void RXI1 (void)
     SSR1 = SSR1 & ~0x40; /* Clear RDRF */
     process_byte(serial_byte);
 }
+
+#ifdef SCREENDUMP
+static void serial_enable_tx(void)
+{
+    SCR1 |= 0x20;
+}
+
+static void serial_tx(unsigned char ch)
+{
+    while (!(SSR1 & SCI_TDRE))
+    {
+        ;
+    }
+    
+    /*
+     * Write data into TDR and clear TDRE
+     */
+    TDR1 = ch;
+    SSR1 &= ~SCI_TDRE;
+}
+
+static void screen_dump(void)
+{
+    int x, y;
+    int level;
+
+    serial_enable_tx();
+
+    level = set_irq_level(15);
+    for(y = 0;y < LCD_HEIGHT/8;y++)
+    {
+        for(x = 0;x < LCD_WIDTH;x++)
+        {
+            serial_tx(lcd_framebuffer[x][y]);
+        }
+    }
+    set_irq_level(level);
+}
+
+#endif
-- 
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