I'm getting a bit confused with what I'm reading in other posts about comms between these little things.
I have a Micro Pro which I need to send data to a Micro. I have a common ground and Micro RX connected to Mp TX0, baud is correct everywhere but I have no data getting to the Micro.
I'm using code from the arduino help files on both. On the Pro I'm opening the port and sending data. On the Micro I'm opening the port, checking available, reading data.
Where I'm confused is what ports to use, there are posts saying I should use Serial, Serial1, or use software posts. I have to use RX on the Micro as there are no other pins available.
So, serial data from a Micro Pro, to a Micro. Which pins should I use and what serial ports? Are there any other considerations?
I'm not posting diagrams or code with this post as I'm asking for best practices for this specific scenario, not a critique of my drawing skills!