 instruction and convert IsBusy variable
                  to volatile.
1.18 ht  07/18/23 Fixed GCC warnings.
1.18 sb  08/01/23 Added support for Feed back clock
1.19 sb  01/12/24 Added support for baud rate divisior
1.20 ht  09/27/24 Fix IAR warning.</pre><pre></pre> </div></div><!-- contents -->
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