This week I worked on the code for making our system bidirectional. This started with adding the call and response for the acknowledgement pulses, and then I expanded to add both sending and receiving capabilities to each side. Throughout testing this week, we’ve gotten the system to a point where it works well as long as only one person is talking at a time, but there are still some bugs when both users overlap talking. This is likely to do with how we are deciding who gets priority to send initially. The code currently randomly tries sending and receiving a letter initially, I chose this randomized priority because I believe it is the best way to ensure compatibility with all users in the hypothetical case that many people with this product exist. However, we will need to do more debugging of this area of the code to ensure that it handles overlapping talking correctly.
The project is ahead of schedule.
This gives us plenty of time next week to continue debugging the system. I’d like to also work more on our full system correctness testing so that within the next week or two we can start working on our use case and design requirement testing.