Hi, I am having difficulty to start a project because the A9 and M4 ttyMCC serial communications are not working properly. Using the A9 - c code to Arduino serial example, works fine with 1 message, as written, try putting it into a while loop, and repeat endlessly. Does not work properly! Tried unidirectional and bidirectional examples. Spent a lot of time fiddling with the code. There must be a proper example of M4 to A9 serial comm to leverage. Anyone else have this issue? How to fix? I am really blown away. It seems to me that better example programs should be available.