add itsybitsy m0 variant (commented out) and bootloaders for all

Author: ladyada

boards.txt

@@ -121,7 +121,7 @@ adafruit_metro_m0.build.variant_system_lib=
 adafruit_metro_m0.build.vid=0x239A
 adafruit_metro_m0.build.pid=0x8013
 adafruit_metro_m0.bootloader.tool=openocd
-adafruit_metro_m0.bootloader.file=metro/samd21_sam_ba.bin
+adafruit_metro_m0.bootloader.file=metro/bootloader_uf2.bin
 
 # Adafruit Circuit Playground M0
 # ------------------------------
@@ -150,8 +150,7 @@ adafruit_circuitplayground_m0.build.variant_system_lib=
 adafruit_circuitplayground_m0.build.vid=0x239A
 adafruit_circuitplayground_m0.build.pid=0x8018
 adafruit_circuitplayground_m0.bootloader.tool=openocd
-adafruit_circuitplayground_m0.bootloader.file=circuitplay/circuitplay_m0_samd21g18_sam_ba.bin
-
+adafruit_circuitplayground_m0.bootloader.file=circuitplay/bootloader_uf2.bin
 
 adafruit_gemma_m0.name=Adafruit Gemma M0
 adafruit_gemma_m0.vid.0=0x239A
@@ -178,7 +177,7 @@ adafruit_gemma_m0.build.variant_system_lib=
 adafruit_gemma_m0.build.vid=0x239A
 adafruit_gemma_m0.build.pid=0x801C
 adafruit_gemma_m0.bootloader.tool=openocd
-adafruit_gemma_m0.bootloader.file=gemma/samd21_sam_ba.bin
+adafruit_gemma_m0.bootloader.file=gemma/bootloader_uf2.bin
 
 adafruit_trinket_m0.name=Adafruit Trinket M0
 adafruit_trinket_m0.vid.0=0x239A
@@ -205,5 +204,31 @@ adafruit_trinket_m0.build.variant_system_lib=
 adafruit_trinket_m0.build.vid=0x239A
 adafruit_trinket_m0.build.pid=0x801E
 adafruit_trinket_m0.bootloader.tool=openocd
-adafruit_trinket_m0.bootloader.file=trinket/samd21_sam_ba.bin
+adafruit_trinket_m0.bootloader.file=trinket/bootloader_uf2.bin
 
+#adafruit_itsybitsy_m0.name=Adafruit Itsybitsy M0
+#adafruit_itsybitsy_m0.vid.0=0x239A
+#adafruit_itsybitsy_m0.pid.0=0x801E
+#adafruit_itsybitsy_m0.vid.1=0x239A
+#adafruit_itsybitsy_m0.pid.1=0x001E
+#adafruit_itsybitsy_m0.upload.tool=bossac
+#adafruit_itsybitsy_m0.upload.protocol=sam-ba
+#adafruit_itsybitsy_m0.upload.maximum_size=262144
+#adafruit_itsybitsy_m0.upload.use_1200bps_touch=true
+#adafruit_itsybitsy_m0.upload.wait_for_upload_port=true
+#adafruit_itsybitsy_m0.upload.native_usb=true
+#adafruit_itsybitsy_m0.build.mcu=cortex-m0plus
+#adafruit_itsybitsy_m0.build.f_cpu=48000000L
+#adafruit_itsybitsy_m0.build.usb_product="Itsybitsy M0"
+#adafruit_itsybitsy_m0.build.usb_manufacturer="Adafruit"
+#adafruit_itsybitsy_m0.build.board=ITSYBITSY_M0
+#adafruit_itsybitsy_m0.build.core=arduino
+#adafruit_itsybitsy_m0.build.extra_flags=-DCRYSTALLESS -DADAFRUIT_ITSYBITSY_M0 -D__SAMD21G18A__ {build.usb_flags}
+#adafruit_itsybitsy_m0.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
+#adafruit_itsybitsy_m0.build.openocdscript=openocd_scripts/arduino_zero.cfg
+#adafruit_itsybitsy_m0.build.variant=itsybitsy_m0
+#adafruit_itsybitsy_m0.build.variant_system_lib=
+#adafruit_itsybitsy_m0.build.vid=0x239A
+#adafruit_itsybitsy_m0.build.pid=0x801E
+#adafruit_itsybitsy_m0.bootloader.tool=openocd
+#adafruit_itsybitsy_m0.bootloader.file=itsybitsy/samd21_sam_ba.bin