mirror of https://github.com/espruino/BangleApps
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README.md
GPS Clock Info
A clock info that displays the Ordanance Survey (OS) grid reference
- 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.
- It then switches the GPS off for 90 seconds before trying to get the next fix
- 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.
- 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
- I suggest installing the GPS power widget so that you can be assured when the GPS is draining power.
- 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.
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