merge st-power and st-bat into st-power

bin/st-bat

@@ -1,7 +0,0 @@
-#!/bin/sh
-VOLTAGE=$(cat /sys/class/power_supply/BAT1/voltage_now)
-CURRENT=$(cat /sys/class/power_supply/BAT1/current_now)
-POWER="$(echo "scale=2; $VOLTAGE*$CURRENT/1000000000000" | bc)W"
-CHARGE="$(cat /sys/class/power_supply/BAT*/capacity)%"
-echo "$CHARGE $POWER"
-#echo $POWER >> .power_log

bin/st-power

@@ -1,8 +1,25 @@
 #!/bin/sh
-POWER="$(pwrstat -status | grep "Load" | awk '{print $2}')W"
-CHARGE=$(pwrstat -status | grep "Battery Capacity" | awk '{print $3$4}')
-if [[ "$CHARGE" == "100%" ]]; then
-  echo $POWER
-else
+
+# for UPS monitoring with pwrstatd
+#
+#POWER="$(pwrstat -status | grep "Load" | awk '{print $2}')W"
+#CHARGE=$(pwrstat -status | grep "Battery Capacity" | awk '{print $3$4}')
+#if [[ "$CHARGE" == "100%" ]]; then
+#  echo $POWER
+#else
+#  echo "$CHARGE $POWER"
+#fi
+
+# for battery monitoring everywhere else
+#
+# if power_now is not present, calculate it:
+#VOLTAGE=$(cat /sys/class/power_supply/BAT*/voltage_now)
+#CURRENT=$(cat /sys/class/power_supply/BAT*/current_now)
+#POWER=$(echo "scale=2; $VOLTAGE*$CURRENT/1000000000000" | bc)
+
+# if it is present, just divide it to watts (from micro watts on thinkpads, perhaps something else on other platforms)
+POWER=$(cat /sys/class/power_supply/BAT*/power_now)
+POWER="$(echo "scale=2; $POWER/1000000" | bc)W"
+CHARGE="$(cat /sys/class/power_supply/BAT*/capacity)%"
+
 echo "$CHARGE $POWER"
-fi