SVL uploader fails on macOS Sequoia

[bblacey]

I recently upgraded from macOS Sonoma to macOS Sequoia and I am no longer able to flash a sketch to an Artemis Things Plus board. The board is connected to a MacBook Pro M3 using an Apple USB-C cable directly to a USB-C port on the MacBook Pro (i.e. no hub involved). This configuration worked perfectly under macOS Sonoma.

% ls -l /dev/cu.*
crw-rw-rw-  1 root  wheel  0x9000003 Sep 25 15:30 /dev/cu.Bluetooth-Incoming-Port
crw-rw-rw-  1 root  wheel  0x9000001 Sep 25 15:30 /dev/cu.debug-console
crw-rw-rw-  1 root  wheel  0x9000005 Sep 25 20:47 /dev/cu.usbserial-110

 % ./svl -b 115200 -f /Users/blacey/Downloads/Artemis-Firmware-Upload-GUI-master/examples/Blink.bin -v /dev/cu.usbserial-110


Artemis SVL Bootloader
Script version 1.7
/dev/cu.usbserial-110 is currently open. Please close any other terminal programs that may be using /dev/cu.usbserial-110 and try again.
%

% lsof | grep usbserial
serial-mo 3922 blacey    3u      CHR                9,5         0t0                 755 /dev/cu.usbserial-110

% kill 3922

% ./svl -b 115200 -f /Users/blacey/Downloads/Artemis-Firmware-Upload-GUI-master/examples/Blink.bin -v /dev/cu.usbserial-110


Artemis SVL Bootloader
Script version 1.7

Phase:	Setup
	Cleared startup blip
Failed to enter bootload phase

Phase:	Setup
	Cleared startup blip
Failed to enter bootload phase

Phase:	Setup
	Cleared startup blip
Failed to enter bootload phase
Target failed to enter bootload mode. Verify the right COM port is selected and that your board has the SVL bootloader.

 % ./svl -b 115200 -f /Users/blacey/Downloads/Artemis-Firmware-Upload-GUI-master/examples/Blink.bin -v /dev/cu.debug-console 


Artemis SVL Bootloader
Script version 1.7

Phase:	Setup
	Cleared startup blip
Failed to enter bootload phase

Phase:	Setup
	Cleared startup blip
Failed to enter bootload phase

Phase:	Setup
	Cleared startup blip
Failed to enter bootload phase
Target failed to enter bootload mode. Verify the right COM port is selected and that your board has the SVL bootloader.

It is physically obvious that the Artemis board is not entering bootloader mode (i.e. agrees with the log messages), because the LED does not turn green.

Any ideas how I can diagnose/resolve this issue?

[PaulZC]

Hi Bruce (@bblacey ),

Apologies again for the delay.

I've got the Artemis Upload GUI working again on macOS Sequoia. See the release notes for details:

https://github.com/sparkfun/Artemis-Firmware-Upload-GUI/releases/tag/v3.1.0

To close this, we need to update svl.py with the same changes.

Best wishes,
Paul

[PaulZC]

The code to be updated is here:

Apollo3_Uploader_SVL/svl.py

Lines 339 to 367 in fc89de7

	for _ in range(num_tries):
	with serial.Serial(args.port, args.baud, timeout=args.timeout) as ser:
	# startup time for Artemis bootloader (experimentally determined - 0.095 sec min delay)
	t_su = 0.15
	time.sleep(t_su) # Allow Artemis to come out of reset
	# Perform baud rate negotiation
	entered_bootloader = phase_setup(ser)
	if(entered_bootloader == True):
	bl_success = phase_bootload(ser)
	if(bl_success == True): # Bootload
	#print("Bootload complete!")
	break
	else:
	verboseprint("Failed to enter bootload phase")
	if(bl_success == True):
	break
	if(entered_bootloader == False):
	print(
	"Target failed to enter bootload mode. Verify the right COM port is selected and that your board has the SVL bootloader.")
	except serial.SerialException:
	phase_serial_port_help()

The updated GUI code is here:

https://github.com/sparkfun/Artemis-Firmware-Upload-GUI/blob/876d7decda7099ace3c12750203a90af5e6bc56f/artemis_uploader/artemis_svl.py#L368-L414