boards: others: canbardo: add openocd configuration

Add OpenOCD support to the CANbardo board definition.

Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>

boards/others/canbardo/board.cmake

@@ -2,5 +2,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 board_runner_args(jlink "--device=ATSAME70N20B")
+board_runner_args(openocd --cmd-post-verify "atsamv gpnvm set 1")
 
 include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)

boards/others/canbardo/canbardo_defconfig

@@ -1,6 +1,8 @@
 # Copyright (c) 2024-2025 Henrik Brix Andersen <henrik@brixandersen.dk>
 # SPDX-License-Identifier: Apache-2.0
 
+CONFIG_BUILD_OUTPUT_HEX=y
+
 CONFIG_ARM_MPU=y
 CONFIG_CACHE_MANAGEMENT=y
 CONFIG_HW_STACK_PROTECTION=y

boards/others/canbardo/support/openocd.cfg

@@ -0,0 +1,24 @@
+if {[info exists env(OPENOCD_INTERFACE)]} {
+	set INTERFACE $env(OPENOCD_INTERFACE)
+} else {
+	set INTERFACE "cmsis-dap"
+}
+
+source [find interface/$INTERFACE.cfg]
+
+transport select swd
+
+set CHIPNAME atsame70n20b
+
+source [find target/atsamv.cfg]
+
+$_TARGETNAME configure -event gdb-attach {
+	echo "Debugger attaching: halting execution"
+	reset halt
+	gdb_breakpoint_override hard
+}
+
+$_TARGETNAME configure -event gdb-detach {
+	echo "Debugger detaching: resuming execution"
+	resume
+}