[FL-2019] Battery test application (#940)

* Power: rework API
* Applications: introduce battery test application
* Power: fix typo
* Desktop: cleanup merge artifacts

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>

applications/power/power_service/power.c

@@ -7,11 +7,6 @@
 #include <gui/view.h>
 
 #define POWER_OFF_TIMEOUT 90
-#define POWER_BATTERY_WELL_LEVEL 70
-
-bool power_is_battery_well(PowerInfo* info) {
-    return info->health > POWER_BATTERY_WELL_LEVEL;
-}
 
 void power_draw_battery_callback(Canvas* canvas, void* context) {
     furi_assert(context);
@@ -50,7 +45,7 @@ Power* power_alloc() {
     power->state = PowerStateNotCharging;
     power->battery_low = false;
     power->power_off_timeout = POWER_OFF_TIMEOUT;
-    power->info_mtx = osMutexNew(NULL);
+    power->api_mtx = osMutexNew(NULL);
 
     // Gui
     power->view_dispatcher = view_dispatcher_alloc();
@@ -66,6 +61,7 @@ Power* power_alloc() {
 
     // Battery view port
     power->battery_view_port = power_battery_view_port_alloc(power);
+    power->show_low_bat_level_message = true;
 
     return power;
 }
@@ -81,7 +77,7 @@ void power_free(Power* power) {
     view_port_free(power->battery_view_port);
 
     // State
-    osMutexDelete(power->info_mtx);
+    osMutexDelete(power->api_mtx);
 
     // FuriPubSub
     furi_pubsub_free(power->event_pubsub);
@@ -135,17 +131,18 @@ static bool power_update_info(Power* power) {
     info.temperature_charger = furi_hal_power_get_battery_temperature(FuriHalPowerICCharger);
     info.temperature_gauge = furi_hal_power_get_battery_temperature(FuriHalPowerICFuelGauge);
 
-    osMutexAcquire(power->info_mtx, osWaitForever);
+    osMutexAcquire(power->api_mtx, osWaitForever);
     bool need_refresh = power->info.charge != info.charge;
     power->info = info;
-    osMutexRelease(power->info_mtx);
+    osMutexRelease(power->api_mtx);
 
     return need_refresh;
 }
 
 static void power_check_low_battery(Power* power) {
     // Check battery charge and vbus voltage
-    if((power->info.charge == 0) && (power->info.voltage_vbus < 4.0f)) {
+    if((power->info.charge == 0) && (power->info.voltage_vbus < 4.0f) &&
+       power->show_low_bat_level_message) {
         if(!power->battery_low) {
             view_dispatcher_send_to_front(power->view_dispatcher);
             view_dispatcher_switch_to_view(power->view_dispatcher, PowerViewOff);

applications/power/power_service/power.h

@@ -50,19 +50,35 @@ typedef struct {
 void power_off(Power* power);
 
 /** Reboot device
- * @param mode - PowerBootMode
+ *
+ * @param mode      PowerBootMode
  */
 void power_reboot(PowerBootMode mode);
 
 /** Get power info
- * @param power - Power instance
- * @param info - PowerInfo instance
+ *
+ * @param power     Power instance
+ * @param info      PowerInfo instance
  */
 void power_get_info(Power* power, PowerInfo* info);
 
 /** Get power event pubsub handler
- * @param power - Power instance
+ *
+ * @param power     Power instance
+ *
+ * @return          FuriPubSub instance
  */
 FuriPubSub* power_get_pubsub(Power* power);
 
-bool power_is_battery_well(PowerInfo* info);
+/** Check battery health
+ *
+ * @return          true if battery is healthy
+ */
+bool power_is_battery_healthy(Power* power);
+
+/** Enable or disable battery low level notification mesage
+ *
+ * @param power     Power instance
+ * @param enable    true - enable, false - disable
+ */
+void power_enable_low_battery_level_notification(Power* power, bool enable);

applications/power/power_service/power_api.c

@@ -26,12 +26,28 @@ void power_get_info(Power* power, PowerInfo* info) {
     furi_assert(power);
     furi_assert(info);
 
-    osMutexAcquire(power->info_mtx, osWaitForever);
+    osMutexAcquire(power->api_mtx, osWaitForever);
     memcpy(info, &power->info, sizeof(power->info));
-    osMutexRelease(power->info_mtx);
+    osMutexRelease(power->api_mtx);
 }
 
 FuriPubSub* power_get_pubsub(Power* power) {
     furi_assert(power);
     return power->event_pubsub;
 }
+
+bool power_is_battery_healthy(Power* power) {
+    furi_assert(power);
+    bool is_healthy = false;
+    osMutexAcquire(power->api_mtx, osWaitForever);
+    is_healthy = power->info.health > POWER_BATTERY_HEALTHY_LEVEL;
+    osMutexRelease(power->api_mtx);
+    return is_healthy;
+}
+
+void power_enable_low_battery_level_notification(Power* power, bool enable) {
+    furi_assert(power);
+    osMutexAcquire(power->api_mtx, osWaitForever);
+    power->show_low_bat_level_message = enable;
+    osMutexRelease(power->api_mtx);
+}

applications/power/power_service/power_i.h

@@ -11,6 +11,8 @@
 
 #include <notification/notification-messages.h>
 
+#define POWER_BATTERY_HEALTHY_LEVEL 70
+
 typedef enum {
     PowerStateNotCharging,
     PowerStateCharging,
@@ -30,11 +32,13 @@ struct Power {
 
     PowerState state;
     PowerInfo info;
-    osMutexId_t info_mtx;
 
     bool battery_low;
+    bool show_low_bat_level_message;
     uint8_t battery_level;
     uint8_t power_off_timeout;
+
+    osMutexId_t api_mtx;
 };
 
 typedef enum {