Don't Access Volatile Variables Directly

[nibanks]

Description

We were getting arm64 build errors when we accessed volatile variables directly in C++ code. Remove those.

Testing

CI/CD

Documentation

N/A

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.92%. Comparing base (ee4a1bc) to head (694204a).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4561      +/-   ##
==========================================
- Coverage   87.61%   85.92%   -1.69%     
==========================================
  Files          56       56              
  Lines       17354    17354              
==========================================
- Hits        15204    14911     -293     
- Misses       2150     2443     +293     

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