Set temporary touch sensitivity

[GregDomzalski]

Description

The YubiKey allows a caller to temporarily adjust the touch threshold which affects the sensitivity of the capacitive touch sensor. It is possible to raise the threshold (thus making the key less sensitive) and more difficult for the touch sensor to activate. This is interesting in automation scenarios where the YubiKey may be in some sort of configuration or test harness. We have found in our own testing that being able to raise the threshold from 6 to about 8 or 9 is able to improve the reliability of our touch automation quite substantially. I am aware of other organizations who have mechanically automated provisioning, so this may prove useful for them too.

Fixes # (internal: PROD1942)

Type of change

Please delete options that are not relevant.

• [x] New feature (non-breaking change which adds functionality)

How has this been tested?

Through updating the test app and verifying that the set command succeeds.

Test configuration:

• Firmware version: 5.4.3
• Yubikey model: A NFC

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have run dotnet format to format my code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes

[github-actions[bot]]

Test Results: Windows

    2 files      2 suites   2s :stopwatch: 3 616 tests 3 616 :white_check_mark: 0 :zzz: 0 :x: 3 618 runs  3 618 :white_check_mark: 0 :zzz: 0 :x:

Results for commit c93f6871.

[github-actions[bot]]

Test Results: Ubuntu

    2 files      2 suites   5s :stopwatch: 3 608 tests 3 608 :white_check_mark: 0 :zzz: 0 :x: 3 610 runs  3 610 :white_check_mark: 0 :zzz: 0 :x:

Results for commit c93f6871.

[github-actions[bot]]

Package	Line Rate	Branch Rate	Complexity	Health
Yubico.Core	42%	31%	4257	➖
Yubico.YubiKey	51%	47%	18549	➖
Summary	49% (31645 / 64503)	44% (8041 / 18093)	22806	➖

Minimum allowed line rate is 40%

[github-actions[bot]]

Test Results: MacOS

    2 files      2 suites   3s :stopwatch: 3 608 tests 3 608 :white_check_mark: 0 :zzz: 0 :x: 3 610 runs  3 610 :white_check_mark: 0 :zzz: 0 :x:

Results for commit c93f6871.