Fix #116, correct format spec strings and types

[jphickey]

Checklist (Please check before submitting)

• I reviewed the Contributing Guide.
• I signed and emailed the appropriate Contributor License Agreement to GSFC-SoftwareRelease@mail.nasa.gov and copied cfs-program@lists.nasa.gov.

Describe the contribution
Resolves mismatches between format strings and the data types

Fixes #116

Testing performed
Build and run tests

Expected behavior changes
Builds successfully

System(s) tested on
RTEMS 4.11

Contributor Info - All information REQUIRED for consideration of pull request
Joseph Hickey, Vantage Systems, Inc.