added metro nrf52840 to board list

Author: hathach

boards.txt

@@ -20,7 +20,7 @@ menu.softdevice=Bootloader Version
 menu.debug=Debug Mode
 
 #**********************************************
-# Feather nRF52832 Board
+# Bluefruit Feather nRF52832 Board
 #**********************************************
 feather52832.name=Adafruit Bluefruit nRF52832 Feather
 feather52832.bootloader.tool=bootburn
@@ -64,7 +64,7 @@ feather52832.menu.debug.l3.build.debug_flags=-DCFG_DEBUG=3 -Os
 
 
 #**********************************************
-# Feather nRF52840 Board
+# Bluefruit Feather nRF52840 Express Board
 #**********************************************
 feather52840.name=Adafruit Bluefruit nRF52840 Feather Express
 
@@ -76,7 +76,7 @@ feather52840.pid.0=0x002A
 feather52840.vid.1=0x239A
 feather52840.pid.1=0x0029
 
-# Application with CDC + MSC
+# Arduino Application with CDC + MSC
 feather52840.vid.2=0x239A
 feather52840.pid.2=0x8029
 
@@ -91,7 +91,6 @@ feather52840.upload.tool=nrfutil
 feather52840.upload.protocol=nrfutil
 feather52840.upload.use_1200bps_touch=true
 feather52840.upload.wait_for_upload_port=true
-#feather52840.upload.native_usb=true
 
 # Build
 feather52840.build.mcu=cortex-m4
@@ -123,20 +122,59 @@ feather52840.menu.debug.l2.build.debug_flags=-DCFG_DEBUG=2 -Os
 feather52840.menu.debug.l3=Level 3 (Segger SystemView)
 feather52840.menu.debug.l3.build.debug_flags=-DCFG_DEBUG=3 -Os
 
+#**********************************************
+# Bluefruit Metro nRF52840 Express Board
+#**********************************************
+metro52840.name=Adafruit Bluefruit nRF52840 Metro Express
+metro52840.bootloader.tool=bootburn
+
+# Upload
+metro52840.upload.tool=nrfutil
+metro52840.upload.protocol=nrfutil
+metro52840.upload.use_1200bps_touch=true
+metro52840.upload.wait_for_upload_port=true
+
+# Build
+metro52840.build.mcu=cortex-m4
+metro52840.build.f_cpu=64000000
+metro52840.build.board=NRF52840_METRO
+metro52840.build.core=nRF5
+metro52840.build.variant=metro_nrf52840_express
+metro52840.build.extra_flags=-DNRF52840_XXAA
+
+# SofDevice Menu
+# Ram & ROM size varies depending on SoftDevice (check linker script)
+
+metro52840.menu.softdevice.s140v6=0.2.7 (s140 6.1.1)
+metro52840.menu.softdevice.s140v6.build.sd_flags=-DS140
+metro52840.menu.softdevice.s140v6.build.sd_name=s140
+metro52840.menu.softdevice.s140v6.build.sd_version=6.1.1
+metro52840.menu.softdevice.s140v6.build.sd_fwid=0x00B6
+metro52840.menu.softdevice.s140v6.build.ldscript=nrf52840_s140_v6.ld
+metro52840.menu.softdevice.s140v6.upload.maximum_size=815104
+metro52840.menu.softdevice.s140v6.upload.maximum_data_size=248832
+
+# Debug Menu
+metro52840.menu.debug.l0=Level 0 (Release)
+metro52840.menu.debug.l0.build.debug_flags=-DCFG_DEBUG=0 -Os
+metro52840.menu.debug.l1=Level 1 (Error Message)
+metro52840.menu.debug.l1.build.debug_flags=-DCFG_DEBUG=1 -Os
+metro52840.menu.debug.l2=Level 2 (Full Debug)
+metro52840.menu.debug.l2.build.debug_flags=-DCFG_DEBUG=2 -Os
+metro52840.menu.debug.l3=Level 3 (Segger SystemView)
+metro52840.menu.debug.l3.build.debug_flags=-DCFG_DEBUG=3 -Os
 
 #**********************************************
-# Nordic PCA10056
+# Nordic nRF52840DK (PCA10056)
 #**********************************************
 pca10056.name=Adafruit Bluefruit on nRF52840DK PCA10056
-
 pca10056.bootloader.tool=bootburn
 
 # Upload
 pca10056.upload.tool=nrfutil
 pca10056.upload.protocol=nrfutil
 pca10056.upload.use_1200bps_touch=true
 pca10056.upload.wait_for_upload_port=true
-#pca10056.upload.native_usb=true
 
 # Build
 pca10056.build.mcu=cortex-m4