Renamed 'no-port' protocol to 'default'

Author: cmaglie

RFCs/0002-pluggable-discovery.md

@@ -768,17 +768,17 @@ tools.arduino_ota.upload.pattern="{runtime.tools.arduinoOTA.path}/bin/arduinoOTA
                                  -sketch "{build.path}/{build.project_name}.bin"
 ```
 
-#### Support for upload "without a port" (`no-port` dummy protocol)
+#### Support for `default` fallback (allows upload "without a port")
 
 Some upload tools already have the port detection builtin so there is no need to specify an upload port (for example the `openocd` tool is often able to autodetect the devices to upload by itself).
 
-To support this particular use case a dummy `no-port` protocol has been reserved:
+To support this particular use case a dummy `default` protocol has been reserved:
 
 ```
-myboard.upload.tool.no-port=openocd_without_port
+myboard.upload.tool.default=openocd_without_port
 ```
 
-The `no-port` upload recipe will be selected when:
+The `default` upload protocol is a kind of wildcard-protocol, it will be selected when:
 
 - The upload port is not specified
 
@@ -789,21 +789,21 @@ or
 Let's see some examples to clarify:
 
 ```
-board1.upload.tool.no-port=openocd_without_port
+board1.upload.tool.default=openocd_without_port
 
 board2.upload.tool.serial=bossac
-board2.upload.tool.no-port=openocd_without_port
+board2.upload.tool.default=openocd_without_port
 
 board3.upload.tool.serial=bossac
 ```
 
-In the `board1` case: the `openocd_without_port` recipe will be always used, even if a port has been selected by the user.
+In the `board1` case: the `openocd_without_port` recipe will be always used, whatever the user's port selection.
 
-In the `board2` case: the `bossac` recipe will be used if the port selected is a `serial` port, otherwise the `openocd_without_port` will be used in all other cases (even if a port has been selected by the user).
+In the `board2` case: the `bossac` recipe will be used if the port selected is a `serial` port, otherwise the `openocd_without_port` will be used in all other cases (whatever the user's port selection).
 
 In the `board3` case: the `bossac` recipe will be used if the port selected is a `serial` port, otherwise the upload will fail.
 
-A lot of existing platforms already have recipes without an explicit port address, in this case the upload tool specified in the old (non-pluggable) way will be considered as a `no-port` upload, for example let's consider the Arduino Zero board:
+A lot of existing platforms already have recipes without an explicit port address, in this case the upload tool specified in the old (non-pluggable) way will be considered as a `default` protocol upload, for example let's consider the Arduino Zero board:
 
 ```
 # Arduino Zero (Prorgamming Port)
@@ -812,7 +812,7 @@ arduino_zero_edbg.name=Arduino Zero (Programming Port)
 arduino_zero_edbg.vid.0=0x03eb
 arduino_zero_edbg.pid.0=0x2157
 
-arduino_zero_edbg.upload.tool=openocd        <--- CONSIDERED AS no-port PROT.
+arduino_zero_edbg.upload.tool=openocd        <--- CONSIDERED AS default PROTOCOL
 arduino_zero_edbg.upload.protocol=sam-ba
 arduino_zero_edbg.upload.maximum_size=262144
 arduino_zero_edbg.upload.maximum_data_size=32768
@@ -821,10 +821,10 @@ arduino_zero_edbg.upload.wait_for_upload_port=false
 arduino_zero_edbg.upload.native_usb=false
 ```
 
-in this case the upload definition will be always considered as a `no-port` by default, in other words, it will be automatically converted into:
+in this case the upload definition will be always considered as a `default` protocol, in other words, it will be automatically converted into:
 
 ```
-arduino_zero_edbg.upload.no-port.tool=openocd
+arduino_zero_edbg.upload.default.tool=openocd
 ```
 
 ## Open Questions