allow openocd to have multiple scripts files

Author: umbynos

boards.txt

@@ -249,7 +249,7 @@ nano_33_iot.build.board=SAMD_NANO_33_IOT
 nano_33_iot.build.core=arduino
 nano_33_iot.build.extra_flags=-DCRYSTALLESS -D__SAMD21G18A__ {build.usb_flags}
 nano_33_iot.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
-nano_33_iot.build.openocdscript=openocd_scripts/arduino_zero.cfg
+nano_33_iot.build.openocdscript=openocd_scripts/openocd.cfg
 nano_33_iot.build.variant=nano_33_iot
 nano_33_iot.build.vid=0x2341
 nano_33_iot.build.pid=0x8057

platform.txt

@@ -137,7 +137,9 @@ debug.toolchain.prefix=arm-none-eabi-
 debug.server=openocd
 debug.server.openocd.path={runtime.tools.openocd-0.10.0-arduino7.path}/bin/openocd
 debug.server.openocd.scripts_dir={runtime.tools.openocd-0.10.0-arduino7.path}/share/openocd/scripts/
-debug.server.openocd.script={runtime.platform.path}/variants/{build.variant}/{build.openocdscript}
+build.openocdinterface=interface/{programmer.protocol}.cfg
+debug.server.openocd.scripts.0={build.openocdinterface}
+debug.server.openocd.scripts.1={runtime.platform.path}/variants/{build.variant}/{build.openocdscript}
 
 # Upload/Debug tools
 # ------------------

programmers.txt

@@ -25,6 +25,7 @@ edbg.extra_params=
 atmel_ice.name=Atmel-ICE
 atmel_ice.communication=USB
 atmel_ice.protocol=cmsis-dap.cfg
+atmel_ice.programmer.protocol=cmsis-dap
 atmel_ice.program.tool=openocd
 atmel_ice.program.tool.default=openocd
 atmel_ice.program.extra_params=

variants/nano_33_iot/openocd_scripts/openocd.cfg

@@ -0,0 +1,5 @@
+# chip name
+set CHIPNAME at91samd21g18
+set ENDIAN little
+
+source [find target/at91samdXX.cfg]