Make all battery sensor drivers report their sample interval

To make use of the time abstraction in the leaky integrator.

src/modules/esc_battery/EscBattery.cpp

@@ -38,7 +38,7 @@ using namespace time_literals;
 EscBattery::EscBattery() :
 	ModuleParams(nullptr),
 	WorkItem(MODULE_NAME, px4::wq_configurations::lp_default),
-	_battery(1, this)
+	_battery(1, this, ESC_BATTERY_INTERVAL_US)
 {
 }
 
@@ -50,6 +50,8 @@ EscBattery::init()
 		return false;
 	}
 
+	_esc_status_sub.set_interval_us(ESC_BATTERY_INTERVAL_US);
+
 	return true;
 }
 

src/modules/esc_battery/EscBattery.hpp

@@ -47,6 +47,8 @@
 #include <uORB/topics/actuator_controls.h>
 #include <battery/battery.h>
 
+using namespace time_literals;
+
 class EscBattery : public ModuleBase<EscBattery>, public ModuleParams, public px4::WorkItem
 {
 public:
@@ -73,5 +75,6 @@ private:
 	uORB::Subscription _actuator_ctrl_0_sub{ORB_ID(actuator_controls_0)};
 	uORB::SubscriptionCallbackWorkItem _esc_status_sub{this, ORB_ID(esc_status)};
 
+	static constexpr uint32_t ESC_BATTERY_INTERVAL_US = 20_ms; // assume higher frequency esc feedback than 50Hz
 	Battery _battery;
 };