Add protocol-explicit upload.tool properties required for pluggable discovery compatibility #8151
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Description of Change
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_discovery
properties 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 was converted to use the new pluggable discovery platform properties syntax (#6506), so those properties are now required. Although such properties were added to board definitions at the time the syntax was changed, new board definitions without the required properties were added later (#7672, #7835).
Those missing properties caused uploads to fail for users of the recent versions of Arduino IDE and Arduino CLI with an error of the form:
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.default
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.Tests scenarios
Upload to each of the boards via Arduino IDE 2.1.0 without encountering
Property 'upload.tool.serial' is undefined
error:Related links
Originally reported at https://forum.arduino.cc/t/upload-to-firebeetle-2-esp-32e-results-in-the-error-property-upload-tool-serial-is-undefined/1122426
Related: #7517