From 23c18a6339638ef78b640d27418565ed5ef1c60e Mon Sep 17 00:00:00 2001
From: jdgordon <jdgordon@a1c6a512-1295-4272-9138-f99709370657>
Date: Thu, 18 Oct 2007 12:15:56 +0000
Subject: [PATCH] slightly better touchpad driver. Still not brilliant, but the
 bootloader/debugger can follow a stylus with a cursor, so we can start work
 on getting apps/ working

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15187 a1c6a512-1295-4272-9138-f99709370657
---
 bootloader/mrobe500.c                              | 14 ++++----
 .../arm/tms320dm320/mrobe-500/button-mr500.c       | 41 ++++++++++++++++------
 .../arm/tms320dm320/mrobe-500/button-target.h      |  4 ++-
 3 files changed, 42 insertions(+), 17 deletions(-)

diff --git a/bootloader/mrobe500.c b/bootloader/mrobe500.c
index 2ea9a1817..c051e54fb 100755
--- a/bootloader/mrobe500.c
+++ b/bootloader/mrobe500.c
@@ -112,7 +112,7 @@ void mrdebug(void)
         printf("%d:%d:%d %d %d %d", t->tm_hour, t->tm_min, t->tm_sec, t->tm_mday, t->tm_mon, t->tm_year);
         printf("time: %d", mktime(t));
 #endif
-        button = button_status();
+        button = button_get(false);
         if (button == BUTTON_POWER)
         {
             printf("reset");
@@ -138,14 +138,16 @@ void mrdebug(void)
 //            tsc2100_keyclick(); /* doesnt work :( */
             line -= 6;
         }
-#if 0
+#if 1
         if (button&BUTTON_TOUCHPAD)
         {
-            unsigned int data = button_get_last_touch();
-            printf("x: %d, y: %d", data>>16, data&0xffff);
-            line-=3;
+            unsigned int data = button_get_data();
+            int x = (data&0xffff0000)>>16, y = data&0x0000ffff;
+            reset_screen();
+            lcd_hline(x-5, x+5, y);
+            lcd_vline(x, y-5, y+5);
+            lcd_update();
         }
-        else line -=2;
 #endif
     }
 }
diff --git a/firmware/target/arm/tms320dm320/mrobe-500/button-mr500.c b/firmware/target/arm/tms320dm320/mrobe-500/button-mr500.c
index ab5860ab0..ea97f6d0d 100644
--- a/firmware/target/arm/tms320dm320/mrobe-500/button-mr500.c
+++ b/firmware/target/arm/tms320dm320/mrobe-500/button-mr500.c
@@ -46,7 +46,11 @@ void use_calibration(bool enable)
 {
     using_calibration = enable;
 }
-
+/* Jd's tests.. These will hopefully work for everyone so we dont have to
+    create a calibration screen. and 
+(0,0) = 0x00c0, 0xf40
+(480,320) = 0x0f19, 0x00fc
+*/
 void set_calibration_points(struct touch_calibration_point *tl,
                             struct touch_calibration_point *br)
 {
@@ -75,7 +79,12 @@ void button_init_device(void)
     last_touch = 0;
     /* GIO is the power button, set as input */
     IO_GIO_DIR0 |= 0x01;
+    topleft.px_x = 0;       topleft.px_y = 0;
+    topleft.val_x = 0x00c0; topleft.val_y = 0xf40;
     
+    bottomright.px_x = LCD_WIDTH;   bottomright.px_y = LCD_HEIGHT;
+    bottomright.val_x = 0x0f19;     bottomright.val_y = 0x00fc;
+    using_calibration = true;
     
     /* Enable the touchscreen interrupt */
     IO_INTC_EINT2 |= (1<<3); /* IRQ_GIO14 */
@@ -94,14 +103,13 @@ inline bool button_hold(void)
 {
     return false;
 }
-#ifdef BOOTLOADER
+
 int button_get_last_touch(void)
 {
     int ret_val = last_touch;
     last_touch = 0;
     return ret_val;
 }
-#endif
 
 static void remote_heartbeat(void)
 {
@@ -114,10 +122,7 @@ int button_read_device(void)
     char c;
     int i = 0;
     int btn = BUTTON_NONE;
-    
-    if (last_touch)
-        btn |= BUTTON_TOUCHPAD;
-
+        
     if ((IO_GIO_BITSET0&0x01) == 0)
         btn |= BUTTON_POWER;
 
@@ -158,11 +163,27 @@ int button_read_device(void)
     }
     return btn;
 }
-
+#define TOUCH_MARGIN 8
 void GIO14(void)
 {
-    tsc2100_read_values(&last_x,  &last_y,
+    short x,y;
+    static int last_tick = 0;
+    tsc2100_read_values(&x,  &y,
                         &last_z1, &last_z2);
-    last_touch = touch_to_pixels(last_x, last_y);
+     if (TIME_BEFORE(last_tick+HZ/5, current_tick))
+    {
+        if ((x > last_x + TOUCH_MARGIN) ||
+            (x < last_x - TOUCH_MARGIN) ||
+            (y > last_y + TOUCH_MARGIN) ||
+            (y < last_y - TOUCH_MARGIN))
+        {
+            last_x = x;
+            last_y = y;
+            queue_clear(&button_queue);
+            queue_post(&button_queue, BUTTON_TOUCHPAD, 
+                touch_to_pixels(x, y));
+        }
+         last_tick = current_tick;
+    }
     IO_INTC_IRQ2 = (1<<3);
 }
diff --git a/firmware/target/arm/tms320dm320/mrobe-500/button-target.h b/firmware/target/arm/tms320dm320/mrobe-500/button-target.h
index d1fd46c62..238a3f614 100644
--- a/firmware/target/arm/tms320dm320/mrobe-500/button-target.h
+++ b/firmware/target/arm/tms320dm320/mrobe-500/button-target.h
@@ -28,6 +28,7 @@
 bool button_hold(void);
 void button_init_device(void);
 int button_read_device(void);
+int button_get_last_touch(void);
 
 struct touch_calibration_point {
     short px_x; /* known pixel value */
@@ -58,8 +59,9 @@ void use_calibration(bool enable);
 /* compatibility hacks */
 #define BUTTON_LEFT     BUTTON_RC_REW
 #define BUTTON_RIGHT    BUTTON_RC_FF
+
 #define POWEROFF_BUTTON BUTTON_POWER
-#define POWEROFF_COUNT  40
+#define POWEROFF_COUNT  10
 
 #define BUTTON_MAIN BUTTON_POWER
 
-- 
2.11.4.GIT