Serial - what happen on full tx buffer?

Projects Programming
1

What happen when i'll try to send data while tx buffer is full? Will this wait or overwrite other data in buffer?

alos is it possible to check number of bytes in tx buffer or number of available bytes to send without overflow?

2

From the Serial reference. The availableForWrite() function.

3

thanks
What about full tx buffer?

4

If the TX buffer is full, the code will wait till there is space. So your program can become very slow.

5

ok, thanks.