updated for mbed-os 5.5

Fork of Task131 by Nicholas Outram

Changes

RevisionDateWhoCommit message
2:cd62746dce8d 2019-09-10 noutram 2019 default tip
1:57dcf2e26432 2017-07-13 noutram updated for mbed-os 5.5
0:2c60e38674e4 2015-09-24 noutram Initial version 24-09-2015