A new flexible and powerful "pluggable discovery" system was added to the Arduino boards platform framework. This system makes it easy for Arduino boards platform authors to use any arbitrary communication channel between the board and development tools.
Boards platform configurations that use the old property syntax are automatically translated to the new syntax by Arduino CLI:
For backward compatibility with IDE 1.8.15 and older the previous syntax is still supported
This translation is only done in platforms that use the old syntax exclusively. If pluggable_discovery properties are defined for the platform then the new pluggable discovery-style upload.tool.<protocol_name> properties must be defined for each board as well.
This platform uses the new pluggable discovery platform properties syntax, so those properties are required.
Error during Upload: Property 'upload.tool.<protocol_name>' is undefined
(where <protocol_name> is the protocol of the selected port, if any)
It is also important to provide compatibility with versions of Arduino development tools from before the introduction of the modern pluggable discovery system. For this reason, the old style <board ID>.upload.tool properties are retained. Old versions of the development tools will treat the <board ID>.upload.tool.<protocol_name> properties as an unused arbitrary user defined property with no special significance and the new versions of the development tools will do the same for the <board ID>.upload.tool properties.
A new flexible and powerful "pluggable discovery" system was added to the Arduino boards platform framework. This system makes it easy for Arduino boards platform authors to use any arbitrary communication channel between the board and development tools.
Boards platform configurations that use the old property syntax are automatically translated to the new syntax by Arduino CLI:
https://arduino.github.io/arduino-cli/latest/platform-specification/#sketch-upload-configuration
This translation is only done in platforms that use the old syntax exclusively. If
pluggable_discoveryproperties are defined for the platform then the new pluggable discovery-styleupload.tool.<protocol_name>properties must be defined for each board as well.This platform uses the new pluggable discovery platform properties syntax, so those properties are required.
The required properties are missing, which causes uploads to fail for users of the recent versions of Arduino IDE and Arduino CLI (https://github.com/Seeed-Studio/ArduinoCore-mbed/issues/11) with an error of the form:
(where
<protocol_name>is the protocol of the selected port, if any)It is also important to provide compatibility with versions of Arduino development tools from before the introduction of the modern pluggable discovery system. For this reason, the old style
<board ID>.upload.toolproperties are retained. Old versions of the development tools will treat the<board ID>.upload.tool.<protocol_name>properties as an unused arbitrary user defined property with no special significance and the new versions of the development tools will do the same for the<board ID>.upload.toolproperties.Originally reported at:
Fixes https://github.com/Seeed-Studio/ArduinoCore-mbed/issues/11