altoslib: Improve performance of AltosLib.hexbytes
authorKeith Packard <keithp@keithp.com>
Mon, 18 Aug 2014 03:53:31 +0000 (20:53 -0700)
committerKeith Packard <keithp@keithp.com>
Mon, 18 Aug 2014 03:53:31 +0000 (20:53 -0700)
On an android device, this function was spending quite a bit of time
calling hexbyte. Open code the conversion to improve performance.

Signed-off-by: Keith Packard <keithp@keithp.com>

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