FS#13538 export and import battery level tables

when battery_bench is run
exports a file in the rockbox directory called 'battery_levels.default'

if the user wants their own levels they can rename the file battery_levels.cfg
and it will be loaded at boot

some minimal error checking is performed prior to using the values

added manual entry

Change-Id: Ia0126faced0c7229fcf8385a1bcb584b5a9dc378

apps/debug_menu.c

@@ -913,10 +913,11 @@ static bool tsc2100_debug(void)
 
 static bool view_battery(void)
 {
+    extern struct battery_tables_t device_battery_tables; /* powermgmt.c */
+    unsigned short *power_history = device_battery_tables.history;
     int view = 0;
     int i, x, y, z, y1, y2, grid, graph;
     unsigned short maxv, minv;
-
     lcd_setfont(FONT_SYSFIXED);
 
     while(1)

apps/main.c

@@ -437,6 +437,7 @@ static void init(void)
     settings_reset();
     settings_load();
     settings_apply(true);
+    init_battery_tables();
 #ifdef HAVE_DIRCACHE
     init_dircache(true);
     init_dircache(false);
@@ -701,7 +702,9 @@ static void init(void)
         settings_reset();
     }
 #endif
-
+    CHART(">init_battery_tables");
+    init_battery_tables();
+    CHART("<init_battery_tables");
 #ifdef HAVE_DIRCACHE
     CHART(">init_dircache(true)");
     rc = init_dircache(true);

apps/plugin.c

@@ -86,6 +86,8 @@ static void* plugin_get_audio_buffer(size_t *buffer_size);
 static void plugin_release_audio_buffer(void);
 static void plugin_tsr(int (*exit_callback)(bool));
 
+extern struct battery_tables_t device_battery_tables; /* powermgmt.c */
+
 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 /* File handle leak prophylaxis */
 #include "bitarray.h"
@@ -842,6 +844,7 @@ static const struct plugin_api rockbox_api = {
     /* new stuff at the end, sort into place next time
        the API gets incompatible */
     add_playbacklog,
+    &device_battery_tables,
 };
 
 static int plugin_buffer_handle;

apps/plugin.h

@@ -991,6 +991,7 @@ struct plugin_api {
     /* new stuff at the end, sort into place next time
        the API gets incompatible */
     void (*add_playbacklog)(struct mp3entry *id3);
+    struct battery_tables_t *device_battery_tables;
 };
 
 /* plugin header */

apps/plugins/battery_bench.c

@@ -24,6 +24,22 @@
 #include "plugin.h"
 #include "lang_enum.h"
 
+/* matches struct in powermgmt.h */
+struct battery_tables_t {
+    unsigned short * const history;
+    unsigned short * const disksafe;
+    unsigned short * const shutoff;
+    unsigned short * const discharge;
+#if CONFIG_CHARGING
+    unsigned short * const charge;
+    const size_t elems;
+    bool isdefault;
+#endif
+};
+
+#define BATTERY_LEVELS_DEFAULT ROCKBOX_DIR"/battery_levels.default"
+#define BATTERY_LEVELS_USER    ROCKBOX_DIR"/battery_levels.cfg"
+
 #define BATTERY_LOG HOME_DIR "/battery_bench.txt"
 #define BUF_SIZE 16000
 
@@ -265,7 +281,7 @@
 #endif
 
 /****************************** Plugin Entry Point ****************************/
-static long start_tick;
+long start_tick;
 
 /* Struct for battery information */
 static struct batt_info
@@ -507,6 +523,66 @@ static void put_centered_str(const char* str, plcdfunc putsxy, int lcd_width, in
     putsxy((lcd_width - strwdt)/2, line*(strhgt), str);
 }
 
+void do_export_battery_tables(void)
+{
+    size_t elems = rb->device_battery_tables->elems;
+    if (!rb->device_battery_tables->isdefault)
+        return; /* no need to print out non-defaults */
+    unsigned int i;
+    int fd;
+    /* write out the default battery levels file */
+    if (!rb->file_exists(BATTERY_LEVELS_DEFAULT))
+    {
+        fd = rb->open(BATTERY_LEVELS_DEFAULT, O_WRONLY | O_CREAT | O_TRUNC, 0666);
+        if (fd >= 0)
+        {
+            rb->fdprintf(fd, "# Rename to %s\n# " MODEL_NAME " Battery Levels (%s)\n\n",
+                     BATTERY_LEVELS_USER, rb->rbversion);
+
+            rb->fdprintf(fd, "# Battery voltage(millivolt) lower than this %s\n",
+                             "player will shutdown");
+            rb->fdprintf(fd, "shutoff: %d\n\n", *rb->device_battery_tables->shutoff);
+
+            rb->fdprintf(fd, "# Battery voltage(millivolt) lower than this %s\n",
+                             "won't access the disk to write");
+            rb->fdprintf(fd, "disksafe: %d\n\n", *rb->device_battery_tables->disksafe);
+
+            rb->fdprintf(fd, "# Battery voltage(millivolt) of {");
+            for(i= 0;i < elems;i++)
+            {
+                rb->fdprintf(fd, "%u%%, ", i * 10);
+            }
+            rb->lseek(fd, -2, SEEK_CUR); /*remove last comma */
+            rb->fdprintf(fd, "} when charging %sabled\n", "dis");
+            rb->fdprintf(fd, "discharge: {");
+            for(i= 0;i < elems;i++)
+            {
+                rb->fdprintf(fd, "%u, ", rb->device_battery_tables->discharge[i]);
+            }
+            rb->lseek(fd, -2, SEEK_CUR); /*remove last comma */
+            rb->fdprintf(fd, "}\n\n");
+#if CONFIG_CHARGING
+            rb->fdprintf(fd, "# Battery voltage(millivolt) of {");
+            for(i= 0;i < elems;i++)
+            {
+                rb->fdprintf(fd, "%u%%, ", i * 10);
+            }
+            rb->lseek(fd, -2, SEEK_CUR); /*remove last comma */
+            rb->fdprintf(fd, "} when charging %sabled\n", "en");
+            rb->fdprintf(fd, "charge: {");
+            for(i= 0;i < elems;i++)
+            {
+                rb->fdprintf(fd, "%u, ", rb->device_battery_tables->charge[i]);
+            }
+            rb->lseek(fd, -2, SEEK_CUR); /*remove last comma */
+            rb->fdprintf(fd, "}\n\n");
+#endif
+            rb->close(fd);
+        }
+    }
+
+}
+
 enum plugin_status plugin_start(const void* parameter)
 {
     int button, fd;
@@ -543,6 +619,7 @@ enum plugin_status plugin_start(const void* parameter)
 #endif
     if (!resume)
     {
+        do_export_battery_tables();
         do
         {
             button = rb->button_get(true);