20. High-level API Reference
YGroundSpeed
groundspeed
→
isOnline_async()
Checks if the ground speed sensor is currently reachable, without raising any error (asynchronous
version).
js
function isOnline_async(
callback
,
context
)
nodejs
function isOnline_async(
callback
,
context
)
If there is a cached value for the ground speed sensor in cache, that has not yet expired, the device is
considered reachable. No exception is raised if there is an error while trying to contact the device
hosting the requested function.
This asynchronous version exists only in Javascript. It uses a callback instead of a return value in order
to avoid blocking the Javascript virtual machine.
Parameters :
callback
callback function that is invoked when the result is known. The callback function receives three
arguments: the caller-specific context object, the receiving function object and the boolean result
context
caller-specific object that is passed as-is to the callback function
Returns :
nothing : the result is provided to the callback.
470
www.yoctopuce.com
Summary of Contents for Yocto-GPS
Page 1: ...Yocto GPS User s guide...
Page 2: ......
Page 6: ...22 Characteristics 557 Blueprint 559 Index 561...
Page 10: ...4 www yoctopuce com...
Page 14: ...8 www yoctopuce com...
Page 18: ...12 www yoctopuce com...
Page 22: ...16 www yoctopuce com...
Page 38: ...32 www yoctopuce com...
Page 42: ...36 www yoctopuce com...
Page 54: ...48 www yoctopuce com...
Page 72: ...66 www yoctopuce com...
Page 92: ...86 www yoctopuce com...
Page 122: ...116 www yoctopuce com...
Page 132: ...126 www yoctopuce com...
Page 564: ...22 Characteristics 558 www yoctopuce com...
Page 565: ......
Page 566: ......