FIP updates

[alexpiet]

Pull Request instructions:

• Please follow the update protocol
• Answer the questions below in detail. Your responses will be emailed to experimenters.
• If the experimenters must do anything new, provide detailed step by step instructions on the wiki
• If computer maintainers need to manually update anything, provide detailed step by step instructions
• Use markdown syntax in order for your comments to be rendered reliably in the email: "1." instead of "1)", use four spaces for indents.
• If you use the keyword "skip email" in the title, it will skip the email updates
• Merges from "develop" into "production_testing" should use the keyword "production merge" in the title for reliable indexing of updates
• Merges from "production_testing" into "main" should use the keyword "update main"

Describe changes:

• Previously, when a user pressed Start FIP workflow the button toggled colors. But this was confusing because the workflow could not be stopped from the GUI. Now the color will not change
• Previously, Start Excitation could not be pressed unless the FIP workflow had already been started. However, @hagikent requests that users check the cables (using excitation) before starting the workflow. So I removed the requirement that the FIP workflow had been started before allowing for excitation. The Start button still checks that the FIP workflow has been started.
• Users can now the FIP mode between Normal and Axon. The only difference is the excitation power. Normal sends the Teensy command c, whereas Axon sends the teensy command e (@hagikent can you double check I got that mapping correct)
• Previously when QComboBox fields were modified by the user, the slot was connected to keyPressEvent which took no action. I added a function that simply logs the new value for debugging purposes.
• Also resolves a small issue where loading a mouse does not "accept" the ID or experimenter fields (the text remain purple). I added a keyPressEvent which accepts them

What issues or discussions does this update address?

• resolves #433
• resolves #435

Describe the expected change in behavior from the perspective of the experimenter

• The Start FIP Workflow button will not change color after you press it
• You can press Start Excitation without starting the workflow first, to allow for checking cables.
• When running an FIP mouse you need to set the FIP mode. This will default to Normal. Some mice for @ZhixiaoSu will have FIP mode = Axon for axonal imaging. An individual mouse will always have the same FIP mode.

Standard UI

Xinxin's UI

Describe any manual update steps for task computers

• none

Was this update tested in 446/447?

• [x] tested in 428
• [x] Make sure it accurately changes the teensy command, and FIP power
• [x] Make sure the parameter is saved and loaded correctly

[alexpiet]

@hagikent This is ready for review, and you should test to make sure it works with the updated Teensy @XX-Yin @hanhou This is mostly FIP updates, but I made a couple other changes you should review