Add nano33 target

Author: facchinm

boards.txt

@@ -0,0 +1,49 @@
+##############################################################
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+##############################################################
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+##############################################################
+
+nano33ble.name=Arduino Nano 33 BLE
+nano33ble.build.core=arduino
+nano33ble.build.crossprefix=arm-none-eabi-
+nano33ble.build.compiler_path={runtime.tools.arm-none-eabi-gcc.path}/bin/
+
+nano33ble.build.variant=ARDUINO_NANO33BLE
+nano33ble.build.mcu=cortex-m4
+nano33ble.build.extra_flags=
+nano33ble.build.architecture=cortex-m4
+nano33ble.build.board=ARDUINO_NANO33BLE
+nano33ble.build.ldscript=linker_script.ld
+nano33ble.compiler.mbed.arch.define=-DARDUINO_ARCH_NRF52840
+nano33ble.compiler.mbed.defines={build.variant.path}/defines.txt
+nano33ble.compiler.mbed.ldflags={build.variant.path}/ldflags.txt
+nano33ble.compiler.mbed.cflags={build.variant.path}/cflags.txt
+nano33ble.compiler.mbed.cxxflags={build.variant.path}/cxxflags.txt
+nano33ble.compiler.mbed.includes={build.variant.path}/includes.txt
+nano33ble.compiler.mbed.extra_ldflags=-lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
+nano33ble.compiler.mbed="{build.variant.path}/libs/libmbed.a" "{build.variant.path}/libs/libcc_310_core.a" "{build.variant.path}/libs/libcc_310_ext.a" "{build.variant.path}/libs/libcc_310_trng.a"
+nano33ble.vid.0=0x2341
+nano33ble.pid.0=0x005a
+nano33ble.vid.1=0x2341
+nano33ble.pid.1=0x805a
+
+nano33ble.upload.tool=bossac
+nano33ble.upload.protocol=
+nano33ble.upload.use_1200bps_touch=true
+nano33ble.upload.wait_for_upload_port=true
+nano33ble.upload.native_usb=true
+nano33ble.upload.maximum_size=983040
+nano33ble.upload.maximum_data_size=262144
+
+nano33ble.bootloader.tool=openocd
+nano33ble.bootloader.extra_action.preflash=nrf5 mass_erase
+nano33ble.bootloader.config=-f target/nrf52.cfg
+nano33ble.bootloader.programmer=-f interface/cmsis-dap.cfg
+nano33ble.bootloader.file=nano33ble/bootloader.hex