Invalid data after cpc reset

[darkxst]

This is probably harmless, but I have noticed some spurious? data being received between CPC Reset and entering bootloader. I was wondering if the CPC connection should be closed at this point? after receiving response from reset command?

Here is a log snippet from ZBDongle-E:

2023-07-28 13:59:30 xps1520 universal_silabs_flasher.common[1200716] DEBUG Received data b'\x14\x00\x16\x00\xc4W\xe5\x06\x00\x10\x00\x03\x00\x00\x00\x04\x00\x00\x00\x03\x00\x00\x00\x01\x00\x00\x00\r\x14'
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.cpc[1200716] DEBUG Parsed frame UnnumberedFrameType.POLL_FINAL CPCTransportFrame(endpoint=<EndpointId.SYSTEM: 0>, control=196, payload=UnnumberedFrame(command_id=<UnnumberedFrameCommandId.PROP_VALUE_IS: 6>, command_seq=0, payload=PropertyCommand(property_id=<PropertyId.SECONDARY_CPC_VERSION: 3>, value=bytearray(b'\x04\x00\x00\x00\x03\x00\x00\x00\x01\x00\x00\x00'))))
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.flasher[1200716] INFO Detected ApplicationType.CPC, version '4.3.1' at 460800 baudrate (bootloader baudrate 115200)
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.common[1200716] DEBUG Connection made: SerialTransport(<_UnixSelectorEventLoop running=True closed=False debug=False>, <universal_silabs_flasher.cpc.CPCProtocol object at 0x7f273b924760>, Serial<id=0x7f273b924c10, open=True>(port='/dev/ttyACM1', baudrate=460800, bytesize=8, parity='N', stopbits=1, timeout=0, xonxoff=False, rtscts=False, dsrdtr=False))
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.cpc[1200716] DEBUG Sending frame CPCTransportFrame(endpoint=<EndpointId.SYSTEM: 0>, control=196, payload=UnnumberedFrame(command_id=<UnnumberedFrameCommandId.PROP_VALUE_SET: 3>, command_seq=0, payload=PropertyCommand(property_id=<PropertyId.BOOTLOADER_REBOOT_MODE: 514>, value=b'\x01\x00\x00\x00')))
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.common[1200716] DEBUG Sending data b'\x14\x00\x0e\x00\xc4\x95\x0f\x03\x00\x08\x00\x02\x02\x00\x00\x01\x00\x00\x00%\xd6'
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.common[1200716] DEBUG Received data b'\x14\x00\x0e\x00\xc4\x95\x0f\x06\x00\x08\x00\x02\x02\x00\x00\x01\x00\x00\x00\x84\xd8'
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.cpc[1200716] DEBUG Parsed frame UnnumberedFrameType.POLL_FINAL CPCTransportFrame(endpoint=<EndpointId.SYSTEM: 0>, control=196, payload=UnnumberedFrame(command_id=<UnnumberedFrameCommandId.PROP_VALUE_IS: 6>, command_seq=0, payload=PropertyCommand(property_id=<PropertyId.BOOTLOADER_REBOOT_MODE: 514>, value=bytearray(b'\x01\x00\x00\x00'))))
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.cpc[1200716] DEBUG Sending frame CPCTransportFrame(endpoint=<EndpointId.SYSTEM: 0>, control=196, payload=UnnumberedFrame(command_id=<UnnumberedFrameCommandId.RESET: 1>, command_seq=1, payload=ResetCommand(status=None)))
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.common[1200716] DEBUG Sending data b'\x14\x00\x06\x00\xc44\xa6\x01\x01\x00\x00\x84A'
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.common[1200716] DEBUG Received data b'\x14\x00\n\x00\xc4U\xd3\x01\x01\x04\x00\x00\x00\x00\x00\x13\xf9'
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.cpc[1200716] DEBUG Parsed frame UnnumberedFrameType.POLL_FINAL CPCTransportFrame(endpoint=<EndpointId.SYSTEM: 0>, control=196, payload=UnnumberedFrame(command_id=<UnnumberedFrameCommandId.RESET: 1>, command_seq=1, payload=ResetCommand(status=<Status.OK: 0>)))
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.common[1200716] DEBUG Received data b'x\x00\x80x\xf8\x80x\xf8\xf8x\xf8x\xf8x\x80x\x80x\x80\x80\xf8x\x00\x80\x80x\x00\x80\x80xx\x80x\x00\x80x\x00x\x00\x80x\xf8\x00xxx\x00xxx\xf8x\x80\x80\x00x\xf8x\xf8x\xf8x\xf8x\xf8x\x00x\x80xxx\x80x\x80\x80\xf8x\x00\x80\x80xx\x80\x80\x80\x80\x80x\x00\x80\x00\x80x\x00\x80xx\x80\x80x\x00\x80x\xf8xx\xf8x\xf8x\x00x\x80x\x80\xf8\x80x\x00x\xf8x\xf8\x00\x80x\x80'
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.cpc[1200716] WARNING Failed to parse buffer bytearray(b'\x80'): ValueError('Invalid flag')
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.common[1200716] DEBUG Received data b'\x80\x80\x80x\x00\x80\x80\x80xxx\xf8x\xf8\x00\x80x\xf8\x80\x80\x80x\x00\x80x\x80x\x00x\xf8x\x80x\xf8x\xf8x\x80x\xf8x\xf8\x00\x80x\x80\x00x\x80x\x80\x80\x80\x00\x80\x00'
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.cpc[1200716] WARNING Failed to parse buffer bytearray(b'\x00'): ValueError('Invalid flag')
rcp-uart-802154-v4.3.0-zbdonglee-460800.gbl
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.common[1200716] DEBUG Connection made: SerialTransport(<_UnixSelectorEventLoop running=True closed=False debug=False>, <universal_silabs_flasher.gecko_bootloader.GeckoBootloaderProtocol object at 0x7f273b94a820>, Serial<id=0x7f273b924be0, open=True>(port='/dev/ttyACM1', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=0, xonxoff=False, rtscts=False, dsrdtr=False))
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.common[1200716] DEBUG Sending data b'3'
2023-07-28 13:59:30 xps1520 universal_silabs_flasher.common[1200716] DEBUG Received data b'\r\nGecko Bootloader v1.12.00\r\n1. upload gbl\r\n2. run\r\n3. ebl info\r\nBL > \x00'

[Hedda]

Maybe related to these?

NabuCasa/silabs-firmware#6

#13