Calliope mini v3: »receive message number« return value "NONE" no message is received

OpenRoberta / openroberta-lab

The programming environment »Open Roberta Lab« by Fraunhofer IAIS enables children and adolescents to program robots. A variety of different programming blocks are provided to program motors and sensors of the robot. Open Roberta Lab uses an approach of graphical programming so that beginners can seamlessly start coding. As a cloud-based application, the platform can be used without prior installation of specific software but runs in any popular browser, independent of operating system and device.

Apache License 2.0

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Describe the bug

Calliope mini v3: If no message is received, »receive message number« block returns the value »None«. This doesn't correspond to the previous »receive« values -> therefore old calliope programs can't be used. Note: return 0 if no message (number) is received.

To Reproduce Steps to reproduce the behavior:

Insert »receive message number«
connect with »show text«
send code to board
see return value

Expected behavior

It is expected the return value "0" as discribed in the wiki, if no message is received as discribed in the wiki.

Screenshots

If applicable, add screenshots to help explain your problem.

Device information

Type: Desktop
OS: Windows 10
Browser: Chrome, Edge

OpenRoberta / openroberta-lab

Calliope mini v3: »receive message number« return value "NONE" no message is received #1683