Simultaneous transmission and reception of data between Arduino boards

Using Arduino Programming Questions
1

How to make two boards simultaneously transmit and receive messages.

Board 1: transmits data as a structure (x, y ,name) and receives data from Board 2 as a structure (x, y, name).

Board 2: vice versa.

2

Connect Board A UART to Board B UART (TX-to-RX and RX-to-TX) and use transport protocol with adequate framing and error detection.

3

They can simultaneously transmit and receive a single byte. Beyond that your code must continuously remove from buffers and continuously add to the buffers. Are you doing that?

4

Here is an example using two Mega2560s.

5

  • are you using an Uno and trying to connect the boards using pins 0/1 also used to download programs to the boards as well as serial monitor messages?

  • how do you plan on formating messages: binary/ASCII and delimiting one msg from the next? ASCII msg are commonly terminated with a linefeed and can use Serial.readBytesUntil('\n", ...). sscanf() can extract values from the received msg