A very basic charging screen, probably buggy, the pro's would make it much nicer, but it's a starting point.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3841 a1c6a512-1295-4272-9138-f99709370657

apps/main.c

@@ -51,6 +51,8 @@
 #include "playlist.h"
 #include "buffer.h"
 #include "rolo.h"
+#include "screens.h"
+#include "power.h"
 
 char appsversion[]=APPSVERSION;
 
@@ -98,7 +100,8 @@ void init(void)
 {
     int rc, i;
     struct partinfo* pinfo;
-    bool coldstart; /* starting from Flash */
+    /* if nobody initialized ATA before, I consider this a cold start */
+    bool coldstart = (PACR2 & 0x4000) != 0; /* starting from Flash */
 
     system_init();
     kernel_init();
@@ -133,8 +136,14 @@ void init(void)
 
     button_init();
 
-    /* if nobody initialized ATA before, I consider this a cold start */
-    coldstart = (PACR2 & 0x4000) != 0; 
+    if (coldstart && charger_inserted())
+    {
+        rc = charging_screen(); /* display a "charging" screen */
+        if (rc == 1 || rc == 2)  /* charger removed or "Off/Stop" pressed */
+            power_off();
+        /* "On" pressed or USB connected: proceed */
+        ide_power_enable(true);
+    }
 
     rc = ata_init();
     if(rc)
@@ -222,3 +231,4 @@ int main(void)
     return 0;
 }
 #endif
+

apps/screens.c

@@ -32,6 +32,7 @@
 #include "playlist.h"
 #include "sprintf.h"
 #include "kernel.h"
+#include "power.h"
 
 #ifdef HAVE_LCD_BITMAP
 #define BMPHEIGHT_usb_logo 32
@@ -116,6 +117,60 @@ void usb_screen(void)
 #endif
 }
 
+
+/* blocks while charging, returns on event:
+   1 if charger cable was removed
+   2 if Off/Stop key was pressed
+   3 if On key was pressed
+   4 if USB was connected */
+int charging_screen(void)
+{
+    int button;
+    int rc = 0;
+#ifdef HAVE_RECORDER_KEYPAD
+    const int offbutton = BUTTON_OFF;
+#else
+    const int offbutton = BUTTON_STOP;
+#endif
+
+    ide_power_enable(false); /* power down the disk, else would be spinning */
+
+    backlight_on();
+    lcd_clear_display();
+    status_draw(true);
+
+#ifdef HAVE_LCD_BITMAP
+    lcd_puts(0, 3, "[Rockbox charging]"); /* ToDo: show some logo instead */
+    lcd_update();
+#else
+    status_set_playmode(STATUS_STOP);
+    lcd_puts(0, 1, "[charging]");
+#endif
+    
+    charger_enable(true);
+
+    do
+    {
+        status_draw(false);
+        button = button_get_w_tmo(HZ/2);
+        if (button == BUTTON_ON)
+            rc = 3;
+        else if (button == offbutton)
+            rc = 2;
+        else
+        {
+            if (usb_detect())
+                rc = 4;
+            else if (!charger_inserted())
+                rc = 1;
+        }
+    } while (!rc);
+
+    return rc;
+}
+
+
+
 #ifdef HAVE_RECORDER_KEYPAD
 /* returns:
    0 if no key was pressed
@@ -643,3 +698,4 @@ void splash(int ticks,   /* how long */
             sleep(ticks);
     }
 }
+

apps/screens.h

@@ -21,6 +21,7 @@
 
 void usb_display_info(void);
 void usb_screen(void);
+int charging_screen(void);
 
 #ifdef HAVE_RECORDER_KEYPAD
 int on_screen(void);
@@ -36,3 +37,4 @@ void splash(int ticks,  /* how long */
             ...);
 
 #endif
+