BangleApps/apps/clkinfogps

GPS Clock Info

A clock info that displays the Ordanance Survey (OS) grid reference

• At the start of the walk update the GPS with using one of the AGPS apps. This will significantly reduce the time to the first fix.
• I suggest installing the GPS power widget so that you can be assured when the GPS is draining power.
• The primary use is for walking where a GPS fix that is 2 minutes old is perfectly fine for providing an OS map grid reference.
• Saves power by only turning the GPS on for the time it takes to get a fix.
• In a static test from 100% charge the battery fell to 20% over 48 hours.
• It then switches the GPS off for 90 seconds before trying to get the next fix
• Displays the GPS time and number of satelites while waiting for a fix.
• The fix is invalidated after 4 minutes and will display 00:00:00 0 or the gps time while the gps is powered on and searching for a fix.
• If the display is shows solid 00:00:00 0 then tap the clkinfo to restart it as it will have timed out after 4 minutes
• It is unlikley that this style of gps clock info will work well with the Recorder app as that would hold the GPS power permantly on all the time during the recording.
• The design is intended to be minimal so if you want to complicate matters please fork the app.

Screenshots

• Above: The GPS is powered on and waiting for a fix.
• The GPS widget shows yellow indicating powered on
• The time from the GPS chip is displayed with the satellite count
• The time from the GPS chip is incrementing approximately every second
• Note the time on the GPS is in UTC and not the current timezone

• Above: The GPS has a fix
• The OS grid reference has been calculated
• The GPS has been turned off for 90 seconds
• The GPS widget is grey showing the GPS is off
• You will not see the GPS widget turn green as the GPS is turned off after a fix

• Above: The GPS has been powered on after 90 seconds and is waiting for a fix

• Above: The GPS has not had a fix for 4 minutes and the cycle has stopped
• The time from the GPS is 00:00:00 0, indicating that the GPS not on
• The GPS widget is grey showing the GPS is off
• Tap the clock_info to restart the GPS clock info

Written by: Hugh Barney For support and discussion please post in the Bangle JS Forum