Serial data viewer appears blank when first visited if data isn't streaming

[darzu]

0. pair a v1 via webusb on chrome
1. load this simple program:
2. with the device paired, click the B button
3. Notice the "show device console" button appears
4. Click that button
5. See a blank page. If there's no interaction, the page stays blank.

Step 5 is the problem. It looks broken to the user. In the gif below I hit "B" again and this causes the page to show graphs.

[abchatra]

You need a writeline to flush. Known thing in these original APIS

[darzu]

Yeah but we could show something like an empty graph or message saying "waiting for data..."

[pelikhan]

I have a lot of grief with the serial view and it would be nice to make a few other improvements:

• ability to close a graph
• ability to see console full screen or graph full screen

[abchatra]

No plans to implement.