Issues using gdb with wifi dev board

#1

I have some issues trying to debug my firmware. I am fairly new to gdb.
I modified the firmware, flashed it to the flipper via qflipper and it ran to some extend.
When I run ./fbt blackmagic to debug it the gdb version downloaded by the fbt script starts running (10.3-2022.07). This version is different from the one mentioned in the documentation, which I installed according to the instructions.
However gdb cannot connect to the remote target with the output attached. Some searching suggests it is because of a mismatch in gdb version and its capabilities.

What am I missing here? Am I doing something wrong, or is it the gdb version?

Remote debugging using /dev/ttyACM0
Ignoring packet error, continuing…
warning: unrecognized item “timeout” in “qSupported” response
Ignoring packet error, continuing…
Remote replied unexpectedly to ‘vMustReplyEmpty’: timeout
“monitor” command not supported by this target.
“monitor” command not supported by this target.
Don’t know how to attach. Try “help target”.

#2

Hi! Can you provide the output of lsusb so we can check where the blackmagic board is connected?

Also, can you uncomment line 30 in the file site_scons/site_tools/blackmagic.py and show the output of running ./fbt blackmagic again?

#3

Hey, I think this is what you were looking for at lsusb:

Bus 001 Device 015: ID 303a:4001 Flipper Devices Inc. Blackmagic ESP32

And here is the output of fbt blackmagic whith line 30 uncommented (everything after this is unchanged):

/dev/ttyACM1 {‘device’: ‘/dev/ttyACM1’, ‘name’: ‘ttyACM1’, ‘description’: ‘Blackmagic ESP32 - Blackmagic ESP32’, ‘hwid’: ‘USB VID:PID=303A:4001 SER=blackmagic LOCATION=1-2:1.2’, ‘vid’: 12346, ‘pid’: 16385, ‘serial_number’: ‘blackmagic’, ‘location’: ‘1-2:1.2’, ‘manufacturer’: ‘Flipper Devices Inc.’, ‘product’: ‘Blackmagic ESP32’, ‘interface’: ‘Blackmagic ESP32’, ‘usb_device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2’, ‘device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.2’, ‘subsystem’: ‘usb’, ‘usb_interface_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.2’}
/dev/ttyACM0 {‘device’: ‘/dev/ttyACM0’, ‘name’: ‘ttyACM0’, ‘description’: ‘Blackmagic ESP32 - Blackmagic ESP32’, ‘hwid’: ‘USB VID:PID=303A:4001 SER=blackmagic LOCATION=1-2:1.0’, ‘vid’: 12346, ‘pid’: 16385, ‘serial_number’: ‘blackmagic’, ‘location’: ‘1-2:1.0’, ‘manufacturer’: ‘Flipper Devices Inc.’, ‘product’: ‘Blackmagic ESP32’, ‘interface’: ‘Blackmagic ESP32’, ‘usb_device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2’, ‘device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.0’, ‘subsystem’: ‘usb’, ‘usb_interface_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.0’}
/dev/ttyACM1 {‘device’: ‘/dev/ttyACM1’, ‘name’: ‘ttyACM1’, ‘description’: ‘Blackmagic ESP32 - Blackmagic ESP32’, ‘hwid’: ‘USB VID:PID=303A:4001 SER=blackmagic LOCATION=1-2:1.2’, ‘vid’: 12346, ‘pid’: 16385, ‘serial_number’: ‘blackmagic’, ‘location’: ‘1-2:1.2’, ‘manufacturer’: ‘Flipper Devices Inc.’, ‘product’: ‘Blackmagic ESP32’, ‘interface’: ‘Blackmagic ESP32’, ‘usb_device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2’, ‘device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.2’, ‘subsystem’: ‘usb’, ‘usb_interface_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.2’}
/dev/ttyACM0 {‘device’: ‘/dev/ttyACM0’, ‘name’: ‘ttyACM0’, ‘description’: ‘Blackmagic ESP32 - Blackmagic ESP32’, ‘hwid’: ‘USB VID:PID=303A:4001 SER=blackmagic LOCATION=1-2:1.0’, ‘vid’: 12346, ‘pid’: 16385, ‘serial_number’: ‘blackmagic’, ‘location’: ‘1-2:1.0’, ‘manufacturer’: ‘Flipper Devices Inc.’, ‘product’: ‘Blackmagic ESP32’, ‘interface’: ‘Blackmagic ESP32’, ‘usb_device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2’, ‘device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.0’, ‘subsystem’: ‘usb’, ‘usb_interface_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.0’}
/dev/ttyACM1 {‘device’: ‘/dev/ttyACM1’, ‘name’: ‘ttyACM1’, ‘description’: ‘Blackmagic ESP32 - Blackmagic ESP32’, ‘hwid’: ‘USB VID:PID=303A:4001 SER=blackmagic LOCATION=1-2:1.2’, ‘vid’: 12346, ‘pid’: 16385, ‘serial_number’: ‘blackmagic’, ‘location’: ‘1-2:1.2’, ‘manufacturer’: ‘Flipper Devices Inc.’, ‘product’: ‘Blackmagic ESP32’, ‘interface’: ‘Blackmagic ESP32’, ‘usb_device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2’, ‘device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.2’, ‘subsystem’: ‘usb’, ‘usb_interface_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.2’}
/dev/ttyACM0 {‘device’: ‘/dev/ttyACM0’, ‘name’: ‘ttyACM0’, ‘description’: ‘Blackmagic ESP32 - Blackmagic ESP32’, ‘hwid’: ‘USB VID:PID=303A:4001 SER=blackmagic LOCATION=1-2:1.0’, ‘vid’: 12346, ‘pid’: 16385, ‘serial_number’: ‘blackmagic’, ‘location’: ‘1-2:1.0’, ‘manufacturer’: ‘Flipper Devices Inc.’, ‘product’: ‘Blackmagic ESP32’, ‘interface’: ‘Blackmagic ESP32’, ‘usb_device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2’, ‘device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.0’, ‘subsystem’: ‘usb’, ‘usb_interface_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.0’}
/dev/ttyACM1 {‘device’: ‘/dev/ttyACM1’, ‘name’: ‘ttyACM1’, ‘description’: ‘Blackmagic ESP32 - Blackmagic ESP32’, ‘hwid’: ‘USB VID:PID=303A:4001 SER=blackmagic LOCATION=1-2:1.2’, ‘vid’: 12346, ‘pid’: 16385, ‘serial_number’: ‘blackmagic’, ‘location’: ‘1-2:1.2’, ‘manufacturer’: ‘Flipper Devices Inc.’, ‘product’: ‘Blackmagic ESP32’, ‘interface’: ‘Blackmagic ESP32’, ‘usb_device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2’, ‘device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.2’, ‘subsystem’: ‘usb’, ‘usb_interface_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.2’}
/dev/ttyACM0 {‘device’: ‘/dev/ttyACM0’, ‘name’: ‘ttyACM0’, ‘description’: ‘Blackmagic ESP32 - Blackmagic ESP32’, ‘hwid’: ‘USB VID:PID=303A:4001 SER=blackmagic LOCATION=1-2:1.0’, ‘vid’: 12346, ‘pid’: 16385, ‘serial_number’: ‘blackmagic’, ‘location’: ‘1-2:1.0’, ‘manufacturer’: ‘Flipper Devices Inc.’, ‘product’: ‘Blackmagic ESP32’, ‘interface’: ‘Blackmagic ESP32’, ‘usb_device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2’, ‘device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.0’, ‘subsystem’: ‘usb’, ‘usb_interface_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.0’}
arm-none-eabi-gdb-py -ex “target extended-remote /dev/ttyACM0” -ex “set confirm off” -ex “monitor swdp_scan” -ex “monitor debug_bmp enable” -ex “attach 1” -ex “set mem inaccessible-by-default off” -ex “source debug/FreeRTOS/FreeRTOS.py” -ex “source debug/PyCortexMDebug/PyCortexMDebug.py” -ex “svd_load debug/STM32WB55_CM4.svd” -ex compare-sections build/f7-firmware-D/firmware.elf
/dev/ttyACM1 {‘device’: ‘/dev/ttyACM1’, ‘name’: ‘ttyACM1’, ‘description’: ‘Blackmagic ESP32 - Blackmagic ESP32’, ‘hwid’: ‘USB VID:PID=303A:4001 SER=blackmagic LOCATION=1-2:1.2’, ‘vid’: 12346, ‘pid’: 16385, ‘serial_number’: ‘blackmagic’, ‘location’: ‘1-2:1.2’, ‘manufacturer’: ‘Flipper Devices Inc.’, ‘product’: ‘Blackmagic ESP32’, ‘interface’: ‘Blackmagic ESP32’, ‘usb_device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2’, ‘device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.2’, ‘subsystem’: ‘usb’, ‘usb_interface_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.2’}
/dev/ttyACM0 {‘device’: ‘/dev/ttyACM0’, ‘name’: ‘ttyACM0’, ‘description’: ‘Blackmagic ESP32 - Blackmagic ESP32’, ‘hwid’: ‘USB VID:PID=303A:4001 SER=blackmagic LOCATION=1-2:1.0’, ‘vid’: 12346, ‘pid’: 16385, ‘serial_number’: ‘blackmagic’, ‘location’: ‘1-2:1.0’, ‘manufacturer’: ‘Flipper Devices Inc.’, ‘product’: ‘Blackmagic ESP32’, ‘interface’: ‘Blackmagic ESP32’, ‘usb_device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2’, ‘device_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.0’, ‘subsystem’: ‘usb’, ‘usb_interface_path’: ‘/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-2/1-2:1.0’}

By the way, the wifi method is working (somewhat…)