Rework powermgmt to enable code re-use on appliation and sims.

* Introduce CONFIG_BATTERY_MEASURE define, to allow targets (application)
to break powermgmt.c's assumption about the ability to read battery voltage.
There's now additionally percentage (android) and remaining time measure
(maemo). No measure at all also works (sdl app). If voltage can't be measured,
then battery_level() is king and it'll be used for power_history and runtime
estimation.

* Implement target's API in the simulator, i.e. _battery_voltage(), so it
doesn't need to implement it's own powermgmt.c and other stubs. Now
the sim behaves much more like a native target, although it still
changes the simulated battery voltage quickly,

* Other changes include include renaming battery_adc_voltage() to
_battery_voltage(), for consistency with the new target functions and
making some of the apps code aware that voltage and runtime estimation
is not always available.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31548 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 45 insertions, 21 deletions

diff --git a/apps/debug_menu.c b/apps/debug_menu.c
index b4d917a..3404071 100644
--- a/apps/debug_menu.c
+++ b/apps/debug_menu.c
@@ -900,8 +900,7 @@ static bool tsc2100_debug(void)
     return simplelist_show_list(&info);
 }
 #endif
-#if (CONFIG_PLATFORM & PLATFORM_NATIVE) || defined(SAMSUNG_YPR0)
-#ifdef HAVE_LCD_BITMAP
+#if (CONFIG_BATTERY_MEASURE != 0) && defined(HAVE_LCD_BITMAP) && !defined(SIMULATOR)
 /*
  * view_battery() shows a automatically scaled graph of the battery voltage
  * over time. Usable for estimating battery life / charging rate.
@@ -909,13 +908,14 @@ static bool tsc2100_debug(void)
  */
 
 #define BAT_LAST_VAL  MIN(LCD_WIDTH, POWER_HISTORY_LEN)
-#define BAT_YSPACE    (LCD_HEIGHT - 20)
+#define BAT_TSPACE    20
+#define BAT_YSPACE    (LCD_HEIGHT - BAT_TSPACE)
 
 
 static bool view_battery(void)
 {
     int view = 0;
-    int i, x, y, y1, y2, grid, graph;
+    int i, x, y, z, y1, y2, grid, graph;
     unsigned short maxv, minv;
 
     lcd_setfont(FONT_SYSFIXED);
@@ -934,19 +934,28 @@ static bool view_battery(void)
                     if (power_history[i] < minv)
                         minv = power_history[i];
                 }
-                
+                /* print header */
+#if (CONFIG_BATTERY_MEASURE & VOLTAGE_MEASURE)
                 /* adjust grid scale */ 
                 if ((maxv - minv) > 50)
                     grid = 50;
                 else
                     grid = 5;
-                
-                /* print header */                
+
                 lcd_putsf(0, 0, "battery %d.%03dV", power_history[0] / 1000,
                          power_history[0] % 1000);
                 lcd_putsf(0, 1, "%d.%03d-%d.%03dV (%2dmV)",
                           minv / 1000, minv % 1000, maxv / 1000, maxv % 1000,
                           grid);
+#elif (CONFIG_BATTERY_MEASURE & PERCENTAGE_MEASURE)
+                /* adjust grid scale */ 
+                if ((maxv - minv) > 10)
+                    grid = 10;
+                else
+                    grid = 1;
+                lcd_putsf(0, 0, "battery %d%%", power_history[0]);
+                lcd_putsf(0, 1, "%d%%-%d%% (%d %%)", minv, maxv, grid);
+#endif
                 
                 i = 1;
                 while ((y = (minv - (minv % grid)+i*grid)) < maxv)
@@ -971,11 +980,11 @@ static bool view_battery(void)
                     {
                         y1 = (power_history[i] - minv) * BAT_YSPACE / 
                             (maxv - minv);
-                        y1 = MIN(MAX(LCD_HEIGHT-1 - y1, 20), 
+                        y1 = MIN(MAX(LCD_HEIGHT-1 - y1, BAT_TSPACE), 
                                  LCD_HEIGHT-1);
                         y2 = (power_history[i-1] - minv) * BAT_YSPACE /
                             (maxv - minv);
-                        y2 = MIN(MAX(LCD_HEIGHT-1 - y2, 20),
+                        y2 = MIN(MAX(LCD_HEIGHT-1 - y2, BAT_TSPACE),
                                  LCD_HEIGHT-1);
 
                         lcd_set_drawmode(DRMODE_SOLID);
@@ -999,10 +1008,13 @@ static bool view_battery(void)
                 lcd_putsf(0, 0, "Pwr status: %s",
                          charging_state() ? "charging" : "discharging");
 #else 
-                lcd_puts(0, 0, "Power status:");
+                lcd_puts(0, 0, "Power status: unknown");
 #endif
-                battery_read_info(&y, NULL);
-                lcd_putsf(0, 1, "Battery: %d.%03d V", y / 1000, y % 1000);
+                battery_read_info(&y, &z);
+                if (y > 0)
+                    lcd_putsf(0, 1, "Battery: %d.%03d V (%d %%)", y / 1000, y % 1000, z);
+                else if (z > 0)
+                    lcd_putsf(0, 1, "Battery: %d %%", z);
 #ifdef ADC_EXT_POWER
                 y = (adc_read(ADC_EXT_POWER) * EXT_SCALE_FACTOR) / 1000;
                 lcd_putsf(0, 2, "External: %d.%03d V", y / 1000, y % 1000);
@@ -1169,16 +1181,23 @@ static bool view_battery(void)
 #endif /* target type */
 #endif /* CONFIG_CHARGING */
                 break;
-
             case 2: /* voltage deltas: */
+#if (CONFIG_BATTERY_MEASURE & VOLTAGE_MEASURE)
                 lcd_puts(0, 0, "Voltage deltas:");
-
-                for (i = 0; i <= 6; i++) {
+                for (i = 0; i < POWER_HISTORY_LEN-1; i++) {
                     y = power_history[i] - power_history[i+1];
-                    lcd_putsf(0, i+1, "-%d min: %s%d.%03d V", i,
-                             (y < 0) ? "-" : "", ((y < 0) ? y * -1 : y) / 1000,
+                    lcd_putsf(0, i+1, "-%d min: %c%d.%03d V", i,
+                             (y < 0) ? '-' : ' ', ((y < 0) ? y * -1 : y) / 1000,
                              ((y < 0) ? y * -1 : y ) % 1000);
                 }
+#elif (CONFIG_BATTERY_MEASURE & PERCENTAGE_MEASURE)
+                lcd_puts(0, 0, "Percentage deltas:");
+                for (i = 0; i < POWER_HISTORY_LEN-1; i++) {
+                    y = power_history[i] - power_history[i+1];
+                    lcd_putsf(0, i+1, "-%d min: %c%d%%", i,
+                             (y < 0) ? '-' : ' ', ((y < 0) ? y * -1 : y));
+                }
+#endif
                 break;
 
             case 3: /* remaining time estimation: */
@@ -1195,13 +1214,19 @@ static bool view_battery(void)
                 lcd_putsf(0, 4, "Trickle sec: %d/60", trickle_sec);
 #endif /* ARCHOS_RECORDER */
 
+#if (CONFIG_BATTERY_MEASURE & VOLTAGE_MEASURE)
                 lcd_putsf(0, 5, "Last PwrHist: %d.%03dV",
                     power_history[0] / 1000,
                     power_history[0] % 1000);
+#endif
 
                 lcd_putsf(0, 6, "battery level: %d%%", battery_level());
 
-                lcd_putsf(0, 7, "Est. remain: %d m", battery_time());
+                int time_left = battery_time();
+                if (time_left >= 0)
+                    lcd_putsf(0, 7, "Est. remain: %d m", time_left);
+                else
+                    lcd_puts(0, 7, "Estimation n/a");
                 break;
         }
 
@@ -1228,8 +1253,7 @@ static bool view_battery(void)
     return false;
 }
 
-#endif /* HAVE_LCD_BITMAP */
-#endif
+#endif /* (CONFIG_BATTERY_MEASURE != 0) && HAVE_LCD_BITMAP */
 
 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 #if (CONFIG_STORAGE & STORAGE_MMC) || (CONFIG_STORAGE & STORAGE_SD)
@@ -2168,7 +2192,7 @@ static const struct the_menu_item menuitems[] = {
         { "View CPU stats", dbg_cpuinfo },
 #endif
 #ifdef HAVE_LCD_BITMAP
-#if (CONFIG_PLATFORM & PLATFORM_NATIVE) || defined(SAMSUNG_YPR0)
+#if (CONFIG_BATTERY_MEASURE != 0) && !defined(SIMULATOR)
         { "View battery", view_battery },
 #endif
 #ifndef APPLICATION