Sending empty (0-byte) data

[hillin]

Sending a 0-byte data actually does nothing on PacketSerial (returns directly in the send method).
However I find it quite common to send such empty data. For example, a simple protobuf struct:

message SimpleMessage
{
    bool value = 1;
}

with its value set to false will be encoded as a 0-byte buffer by nanopb. I guess it's better to just send a PacketMarker for this kind of data.

Expected Behavior

Send a PacketMarker for 0-byte data.

Current Behavior

Does nothing on 0-byte data.

Your Environment

• Version used: 1.4.0
• IDE Name and version: N/A
• Operating System and version (desktop or mobile): Arduino
• Link to your project: N/A

[PowerBroker2]

This lib seems to be unsupported. A much easier to use and supported serial packet library can be found here.

[bakercp]

This library is in fact supported.

[bakercp]

Hi @hillin, pull requests are definitely welcomed!

https://github.com/bakercp/PacketSerial/blob/master/docs/CONTRIBUTING.md