Fix upload on UNO2018

Author: facchinm

boards.txt

@@ -10,7 +10,7 @@ uno2018.vid.0=0x03eb
 uno2018.pid.0=0x2145
 
 uno2018.upload.tool=avrdude
-uno2018.upload.protocol=arduino
+uno2018.upload.protocol=xplainedmini_updi
 uno2018.upload.maximum_size=32256
 uno2018.upload.maximum_data_size=2048
 uno2018.upload.speed=115200
@@ -28,6 +28,6 @@ uno2018.build.f_cpu=16000000L
 uno2018.build.board=AVR_UNO_2018
 uno2018.build.core=arduino
 uno2018.build.variant=uno2018
-uno2018.build.extra_flags=-B{runtime.tools.atpack.path}/gcc/dev/{build.mcu}
+#uno2018.build.extra_flags=-B{runtime.tools.atpack.path}/gcc/dev/{build.mcu}
 
-##############################################################
+##############################################################

platform.txt

@@ -102,7 +102,7 @@ tools.avrdude.upload.params.quiet=-q -q
 # tools.avrdude.upload.verify is needed for backwards compatibility with IDE 1.6.8 or older, IDE 1.6.9 or newer overrides this value
 tools.avrdude.upload.verify=
 tools.avrdude.upload.params.noverify=-V
-tools.avrdude.upload.pattern="{cmd.path}" "-C{config.path}" {upload.verbose} {upload.verify} -p{build.mcu} -c{upload.protocol} "-P{serial.port}" -b{upload.speed} -D "-Uflash:w:{build.path}/{build.project_name}.hex:i"
+tools.avrdude.upload.pattern="{cmd.path}" "-C{config.path}" {upload.verbose} {upload.verify} -p{build.mcu} -c{upload.protocol} -Pusb -b{upload.speed} -e -D "-Uflash:w:{build.path}/{build.project_name}.hex:i"
 
 tools.avrdude.program.params.verbose=-v
 tools.avrdude.program.params.quiet=-q -q