lets start with two versions, we can bump up bossac for everything else later

Author: ladyada

boards.txt

@@ -278,7 +278,7 @@ adafruit_metro_m4.vid.0=0x239A
 adafruit_metro_m4.pid.0=0x8020
 adafruit_metro_m4.vid.1=0x239A
 adafruit_metro_m4.pid.1=0x0020
-adafruit_metro_m4.upload.tool=bossac
+adafruit_metro_m4.upload.tool=bossac18
 adafruit_metro_m4.upload.protocol=sam-ba
 adafruit_metro_m4.upload.maximum_size=507904
 adafruit_metro_m4.upload.offset=0x4000

platform.txt

@@ -131,21 +131,32 @@ tools.avrdude_remote.upload.pattern="openocd --version 2>&1 | grep 2016 && if op
 #
 # BOSSA
 #
-tools.bossac.path={runtime.tools.bossac-1.8.0-48-gb176eee.path}
+
+tools.bossac.path={runtime.tools.bossac-1.7.0.path}
 tools.bossac.cmd=bossac
-tools.bossac.cmd.windows=bossac.exe
-#tools.bossac.cmd.linux=bossac_linux
-#tools.bossac.cmd.macosx=bossac_osx
 
 tools.bossac.upload.params.verbose=-i -d
 tools.bossac.upload.params.quiet=
-tools.bossac.upload.pattern="{path}/{cmd}" {upload.verbose} --port={serial.port.file} -U -i --offset={upload.offset} -e -w -v "{build.path}/{build.project_name}.bin" -R
+tools.bossac.upload.pattern="{path}/{cmd}" {upload.verbose} --port={serial.port.file} -U {upload.native_usb} -i -e -w -v "{build.path}/{build.project_name}.bin" -R
 
-tools.bossac_remote.upload.pattern=/usr/bin/run-bossac {upload.verbose} --port=ttyATH0 -U --offset={upload.offset} -e -w -v /tmp/sketch.bin -R
+tools.bossac_remote.upload.pattern=/usr/bin/run-bossac {upload.verbose} --port=ttyATH0 -U {upload.native_usb} -e -w -v /tmp/sketch.bin -R
 
 tools.bossac.network_cmd={runtime.tools.arduinoOTA.path}/bin/arduinoOTA
 tools.bossac.upload.network_pattern="{network_cmd}" -address {serial.port} -port 65280 -username arduino -password "{network.password}" -sketch "{build.path}/{build.project_name}.bin" -upload /sketch -b
 
+# v1.8.0
+
+tools.bossac18.path={runtime.tools.bossac-1.8.0-48-gb176eee.path}
+tools.bossac18.cmd=bossac
+
+tools.bossac18.upload.params.verbose=-i -d
+tools.bossac18.upload.params.quiet=
+tools.bossac18.upload.pattern="{path}/{cmd}" {upload.verbose} --port={serial.port.file} -U -i --offset={upload.offset} -e -w -v "{build.path}/{build.project_name}.bin" -R
+
+tools.bossac18.network_cmd={runtime.tools.arduinoOTA.path}/bin/arduinoOTA
+tools.bossac18.upload.network_pattern="{network_cmd}" -address {serial.port} -port 65280 -username arduino -password "{network.password}" -sketch "{build.path}/{build.project_name}.bin" -upload /sketch -b
+
+
 #
 # OpenOCD sketch upload
 #