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SAA1064 and Seven Segment display APIs #41

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Updated API based off conversations with Nat last Tuesday.

Deferred configuration to first data write to the chip. This means it's impossible to forget to configure the chip.

Fixed a problem with padding on displaying strings of length less than the number of digits. For example, displaying '10' on a 4 digit display, used to show '10--' (where - signifies a blank digit). Now it shows '--10'.

Stuart Ervine added 17 commits February 18, 2013 22:30
…, and a writable byte for all configuration. [SE]
…r around the SAA1064. Still need to add some protection to it. [SE]
…sed digits, and configured on first write. [SE]
@@ -0,0 +1,17 @@
__author__ = 'stuartervine'
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Can we use a consistent naming convention for programs in the examples directory? Hyphens, not underscores, to separate words and no .py suffix (makes working at the command-line more convenient). Also they should be executable and start with the line "#!/usr/bin/env python3"

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