Fixed sending of time after flight controller reboot.

common/background.lua

@@ -7,7 +7,7 @@ local MSP_TX_INFO = 186
 local sensorName = "Tmp1" -- T1 is never 0 in Betaflight
 
 local lastRunTS
-local oldSensorValue
+local timeIsSet = false
 local sensorId
 local mspMsgQueued = false
 
@@ -22,7 +22,6 @@ end
 
 local function init()
  sensorId = getTelemetryId(sensorName)
- oldSensorValue = 0
  lastRunTS = 0
 end
 
@@ -39,32 +38,31 @@ local function run_bg()
  -- get sensor value
  local newSensorValue = getValue(sensorId)
 
- if type(newSensorValue) == "number" then
-
+ if not timeIsSet and type(newSensorValue) == "number" and newSensorValue > 0 then
  -- Send datetime when the telemetry connection is available
  -- assuming when sensor value higher than 0 there is an telemetry connection
  -- only send datetime one time after telemetry connection became available 
  -- or when connection is restored after e.g. lipo refresh
- if oldSensorValue == 0 and newSensorValue > 0 then
- local now = getDateTime()
- local year = now.year;
-
- values = {}
- values[1] = bit32.band(year, 0xFF)
- year = bit32.rshift(year, 8)
- values[2] = bit32.band(year, 0xFF)
- values[3] = now.mon
- values[4] = now.day
- values[5] = now.hour
- values[6] = now.min
- values[7] = now.sec
-
- -- send msp message
- mspSendRequest(MSP_SET_RTC, values)
- mspMsgQueued = true
- end
+ local now = getDateTime()
+ local year = now.year;
+
+ values = {}
+ values[1] = bit32.band(year, 0xFF)
+ year = bit32.rshift(year, 8)
+ values[2] = bit32.band(year, 0xFF)
+ values[3] = now.mon
+ values[4] = now.day
+ values[5] = now.hour
+ values[6] = now.min
+ values[7] = now.sec
+
+ -- send msp message
+ mspSendRequest(MSP_SET_RTC, values)
+ mspMsgQueued = true
 
- oldSensorValue = newSensorValue
+ timeIsSet = true
+ else
+ timeIsSet = false
  end
 
 
@@ -74,7 +72,8 @@ local function run_bg()
 
  if mspMsgQueued == false then
  local rssi, alarm_low, alarm_crit = getRSSI()
- rssi = rssi * 3 -- scaling of [0, 85] (empirical) DBm value to [0, 255]
+ -- Scale the [0, 85] (empirical) RSSI values to [0, 255]
+ rssi = rssi * 3
  if rssi > 255 then
  rssi = 255
  end