Hey all,
I have a custom board that is mostly based off of the Adafruit Grand Central M4 Express with a SAMD51 microcontroller. I'd like to get debugging up and running in the Arduino 2.0 IDE.
I've edited my platform.txt
file of my board definition so that it now contains the compiler optimization flags and a debug configuration (similar to what was done in the Arduino SAMD core, link here: ArduinoCore-samd/platform.txt at master · arduino/ArduinoCore-samd · GitHub)
Here is the "compiler" section of the platform.txt file:
# Compile variables
# -----------------
compiler.optimization_flags=-Os
compiler.optimization_flags.release=-Os
compiler.optimization_flags.debug=-Og -g3
compiler.warning_flags=-w
compiler.warning_flags.none=-w
compiler.warning_flags.default=
compiler.warning_flags.more=-Wall -Wno-expansion-to-defined
compiler.warning_flags.all=-Wall -Wextra -Wno-expansion-to-defined
compiler.path={runtime.tools.arm-none-eabi-gcc.path}/bin/
compiler.c.cmd=arm-none-eabi-gcc
compiler.c.flags=-mcpu={build.mcu} -mthumb -c -g {compiler.optimization_flags} {compiler.warning_flags} -std=gnu11 -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -MMD -D__SKETCH_NAME__="""{build.project_name}"""
compiler.c.elf.cmd=arm-none-eabi-g++
compiler.c.elf.flags={compiler.optimization_flags} -Wl,--gc-sections -save-temps
compiler.S.cmd=arm-none-eabi-gcc
compiler.S.flags=-c -g -x assembler-with-cpp -MMD
compiler.cpp.cmd=arm-none-eabi-g++
compiler.cpp.flags=-mcpu={build.mcu} -mthumb -c -g {compiler.optimization_flags} {compiler.warning_flags} -std=gnu++11 -ffunction-sections -fdata-sections -fno-threadsafe-statics -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -MMD -D__SKETCH_NAME__="""{build.project_name}"""
compiler.ar.cmd=arm-none-eabi-ar
compiler.ar.flags=rcs
compiler.objcopy.cmd=arm-none-eabi-objcopy
compiler.objcopy.eep.flags=-O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0
compiler.elf2hex.bin.flags=-O binary
compiler.elf2hex.hex.flags=-O ihex -R .eeprom
compiler.elf2hex.cmd=arm-none-eabi-objcopy
compiler.ldflags=-mcpu={build.mcu} -mthumb -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--unresolved-symbols=report-all -Wl,--warn-common -Wl,--warn-section-align
compiler.size.cmd=arm-none-eabi-size
compiler.define=-DARDUINO=
compiler.readelf.cmd=arm-none-eabi-readelf
And here is the debug configuration:
# Debugger configuration (general options)
# ----------------------------------------
# EXPERIMENTAL feature:
# - this is alpha and may be subject to change without notice
debug.executable={build.path}/{build.project_name}.elf
debug.toolchain=gcc
debug.toolchain.path={runtime.tools.arm-none-eabi-gcc-7-2017q4.path}/bin/
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}
Unfortunately, I can't seem to get it to work. When I click the "debug" button in the IDE, here is the output that I receive:
Open On-Chip Debugger 0.10.0+dev-gf0767a31 (2018-06-11-13:36)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : auto-selecting first available session transport "swd". To override use 'transport select <transport>'.
none separate
adapter speed: 400 kHz
cortex_m reset_config sysresetreq
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : CMSIS-DAP: SWD Supported
Info : CMSIS-DAP: JTAG Supported
Info : CMSIS-DAP: Interface Initialised (SWD)
Info : CMSIS-DAP: FW Version = 1.0
Info : SWCLK/TCK = 1 SWDIO/TMS = 1 TDI = 1 TDO = 1 nTRST = 0 nRESET = 1
Info : CMSIS-DAP: Interface ready
Info : clock speed 400 kHz
Info : SWD DPIDR 0x2ba01477
Info : at91samd51p20.cpu: hardware has 6 breakpoints, 4 watchpoints
Info : Listening on port 50000 for gdb connections
Info : accepting 'gdb' connection on tcp/50000
target halted due to debug-request, current mode: Thread
xPSR: 0x81000000 pc: 0x00004382 msp: 0x2002ffe8
Error: Couldn't find part corresponding to DID 60060001
Error: auto_probe failed
Error: Connect failed. Consider setting up a gdb-attach event for the target to prepare target for GDB connect, or use 'gdb_memory_map disable'.
Error: attempted 'gdb' connection rejected
I have my custom board connected to an Atmel-ICE unit via an SWD interface.
Any help would be appreciated. Thanks!