[SOLVED] Setup Tabs GPS sensor & Ubidots

[arjanvanb (Arjan)]

In fact, later I found I already posted a slightly simpler approach for a decoder for the same device:

@arjanvanb

Probably easier to shift 4 and 3 bytes too far to the left, and shift it back, as the bitwise operator >> is the sign-propagating right shift:

// LSB, ignoring the 4 and 3 high bits, and sign-extending to 32 bits
// to support negative values, by shifting 4 or 3 bytes too far to
// the left (discarding those bits, as only 32 bits are preserved),
// followed by a sign-propagating right shift:
var lat = bytes[3] | bytes[4]<<8 | bytes[5]<<16 | bytes[6]<<28>>4;
var lng = bytes[7] | bytes[8]<<8 | bytes[9]<<16 | bytes[10]<<27>>3;

I guess a 7:16 PM post is better than a 0:17 AM post.