wt_node: Added BatteryState message

diff --git a/scripts/wt_node.py b/scripts/wt_node.py
index bb6fbb02f0ef832f4c30da7dac25e0d767e60cd7..5fc2e2d53155630563bf342d12769c9d3861de27 100755 (executable)
--- a/scripts/wt_node.py
+++ b/scripts/wt_node.py
@@ -13,7 +13,7 @@ from geometry_msgs.msg import Twist
 from nav_msgs.msg import Odometry
 from diagnostic_msgs.msg import DiagnosticArray, DiagnosticStatus, KeyValue
 from dynamic_reconfigure.server import Server
-from sensor_msgs.msg import Imu, Range
+from sensor_msgs.msg import Imu, Range, BatteryState
 from wild_thumper.msg import LedStripe
 from wild_thumper.cfg import WildThumperConfig
 
@@ -65,6 +65,7 @@ class MoveBase:
                self.pub_range_bwd = rospy.Publisher("range_backward", Range, queue_size=16)
                self.pub_range_left = rospy.Publisher("range_left", Range, queue_size=16)
                self.pub_range_right = rospy.Publisher("range_right", Range, queue_size=16)
+               self.pub_battery = rospy.Publisher("battery", BatteryState, queue_size=16)
                self.cmd_vel = None
                self.cur_vel = (0, 0)
                self.bMotorManual = False
@@ -211,6 +212,20 @@ class MoveBase:
                msg.status.append(stat)
                self.pub_diag.publish(msg)
 
+               if self.pub_battery.get_num_connections() > 0:
+                       batmsg = BatteryState()
+                       batmsg.header.stamp = rospy.Time.now()
+                       batmsg.voltage = volt
+                       batmsg.current = float('nan')
+                       batmsg.charge = float('nan')
+                       batmsg.capacity = float('nan')
+                       batmsg.design_capacity = 5.0
+                       batmsg.percentage = float('nan')
+                       batmsg.power_supply_status = BatteryState.POWER_SUPPLY_STATUS_DISCHARGING
+                       batmsg.power_supply_health = BatteryState.POWER_SUPPLY_HEALTH_UNKNOWN
+                       batmsg.power_supply_technology = BatteryState.POWER_SUPPLY_TECHNOLOGY_NIMH
+                       self.pub_battery.publish(batmsg)
+
                if volt < 7 and (rospy.Time.now() - self.volt_last_warn).to_sec() > 10:
                        rospy.logerr("Voltage critical: %.2fV" % (volt))
                        self.volt_last_warn = rospy.Time.now()