flash: support flashing boards using Mass Storage Device (MSD) operation for uf2 and daplink bootloaders

Signed-off-by: Ron Evans <ron@hybridgroup.com>

targets/circuitplay-express.json

@@ -1,5 +1,8 @@
 {
     "inherits": ["atsamd21g18a"],
     "build-tags": ["sam", "atsamd21g18a", "circuitplay_express"],
-    "flash": "uf2conv.py {bin}"
+    "flash": "{uf2}",
+    "flash-1200-bps-reset": "true",
+    "flash-method": "msd",
+    "flash-msd-volume-name": "CPLAYBOOT"
 }

targets/feather-m0.json

@@ -1,5 +1,8 @@
 {
     "inherits": ["atsamd21g18a"],
     "build-tags": ["sam", "atsamd21g18a", "feather_m0"],
-    "flash": "bossac -d -i -e -w -v -R --port={port} --offset=0x2000 {hex}"
+    "flash": "{uf2}",
+    "flash-1200-bps-reset": "true",
+    "flash-method": "msd",
+    "flash-msd-volume-name": "FEATHERBOOT"
 }

targets/hifive1b.json

@@ -3,5 +3,8 @@
 	"build-tags": ["hifive1b"],
 	"ldflags": [
 		"-T", "targets/hifive1b.ld"
-	]
+	],
+	"flash": "{hex}",
+	"flash-method": "msd",
+    "flash-msd-volume-name": "HiFive"
 }

targets/itsybitsy-m0.json

@@ -1,5 +1,8 @@
 {
     "inherits": ["atsamd21g18a"],
     "build-tags": ["sam", "atsamd21g18a", "itsybitsy_m0"],
-    "flash": "bossac -d -i -e -w -v -R --port={port} --offset=0x2000 {hex}"
+    "flash": "{uf2}",
+    "flash-1200-bps-reset": "true",
+    "flash-method": "msd",
+    "flash-msd-volume-name": "ITSYBOOT"
 }

targets/itsybitsy-m4.json

@@ -1,5 +1,8 @@
 {
     "inherits": ["atsamd51g19a"],
     "build-tags": ["sam", "atsamd51g19a", "itsybitsy_m4"],
-    "flash": "bossac -d -i -e -w -v -R --offset=0x4000 {bin}"
+    "flash": "{uf2}",
+    "flash-1200-bps-reset": "true",
+    "flash-method": "msd",
+    "flash-msd-volume-name": "ITSYM4BOOT"
 }

targets/microbit.json

@@ -3,5 +3,7 @@
 	"build-tags": ["microbit"],
 	"flash": "openocd -f interface/cmsis-dap.cfg -f target/nrf51.cfg -c 'program {hex} reset exit'",
 	"ocd-daemon": ["openocd", "-f", "interface/cmsis-dap.cfg", "-f", "target/nrf51.cfg"],
-	"gdb-initial-cmds": ["target remote :3333", "monitor halt", "load", "monitor reset", "c"]
+	"gdb-initial-cmds": ["target remote :3333", "monitor halt", "load", "monitor reset", "c"],
+	"flash-method": "msd",
+	"flash-msd-volume-name": "MICROBIT"
 }

targets/trinket-m0.json

@@ -1,5 +1,8 @@
 {
     "inherits": ["atsamd21e18a"],
     "build-tags": ["sam", "atsamd21e18a", "trinket_m0"],
-    "flash": "bossac -d -i -e -w -v -R --port={port} --offset=0x2000 {hex}"
+    "flash": "{uf2}",
+    "flash-1200-bps-reset": "true",
+    "flash-method": "msd",
+    "flash-msd-volume-name": "TRINKETBOOT"
 }