How to add buttonless_dfu and serial_dfu functions at the same time.

[June6]

Now the code in the application part has added the buttonless_dfu function, which has also been successfully implemented. But I ’m not familiar with serial_dfu, I don’t know how to continue to add serial_dfu function. And how to achieve coexistence of ble_dfu and serial_dfu in bootload code？

[Hung Bui]

Hi June, 

You can have a look at this case: https://devzone.nordicsemi.com/f/nordic-q-a/35431/dfu-over-ble-and-usb

I have an example for SDK v15.2 there. To find how to enter DFU bootloader mode from application, please study the ble_app_buttonless_dfu example. Check function enter_bootloader() and then ble_dfu_buttonless_bootloader_start_prepare(). The GPREGRET register is written before the application reset and enter bootloader. 

[June6]

Hi Hung Bui，

I have added the serial_dfu code with reference to this routine, and now I have a few questions:

1、Does uart need flow control during serial dfu? I am currently turning off serial port flow control because my hardware does not have two pins for flow control

2、In normal application operation, in addition to the buttonless method, I can also enter the upgrade mode by pressing the button. After pressing the button, I performed the following operations:

err_code = sd_power_gpregret_clr(0, 0xffffffff);
VERIFY_SUCCESS(err_code);

err_code = sd_power_gpregret_set(0, BOOTLOADER_DFU_START);
VERIFY_SUCCESS(err_code);

// Signal that DFU mode is to be enter to the power management module
nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_DFU);

Is this correct?

3、After entering the upgrade mode, what nrfutil command is used to upgrade the zip package into the chip?

[Hung Bui]

How does it has anything to do with pc_ble_driver_py ? 
Could you post the full logging of the command line ? 
Please test with the uart example in \examples\dfu\secure_bootloader. 

[June6]

I used the uart examples in \ examples \ dfu \ secure_bootloader. The full log of the command line is as follows:

Traceback (most recent call last):
  File "D:\Application\Python38\Scripts\nrfutil-script.py", line 11, in <module>
    load_entry_point('nrfutil==6.0.1', 'console_scripts', 'nrfutil')()
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 782, in main
    rv = self.invoke(ctx)
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\__main__.py", line 1055, in serial
    do_serial(package, port, connect_delay, flow_control, packet_receipt_notification, baud_rate, serial_number, True,
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\__main__.py", line 970, in do_serial
    dfu.dfu_send_images()
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu.py", line 127, in dfu_send_images
    self._dfu_send_image(self.manifest.application)
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu.py", line 95, in _dfu_send_image
    self.dfu_transport.send_init_packet(data)
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu_transport_serial.py", line 255, in send_init_packet
    self.__stream_data(data=init_packet)
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu_transport_serial.py", line 474, in __stream_data
    response = self.__calculate_checksum()
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu_transport_serial.py", line 409, in __calculate_checksum
    response = self.__get_response(DfuTransportSerial.OP_CODE['CalcChecSum'])
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu_transport_serial.py", line 491, in __get_response
    raise NordicSemiException('Unexpected Executed OP_CODE.\n' \
pc_ble_driver_py.exceptions.NordicSemiException: Unexpected Executed OP_CODE.
Expected: 0x03 Received: 0x64
PS D:\Application\Python38\Scripts\DFU\UART\15.3-52840> nrfutil dfu serial -pkg production_DFU.zip -p COM14 -b 9600

Traceback (most recent call last):
  File "D:\Application\Python38\Scripts\nrfutil-script.py", line 11, in <module>
    load_entry_point('nrfutil==6.0.1', 'console_scripts', 'nrfutil')()
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 782, in main
    rv = self.invoke(ctx)
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\__main__.py", line 1055, in serial
    do_serial(package, port, connect_delay, flow_control, packet_receipt_notification, baud_rate, serial_number, True,
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\__main__.py", line 970, in do_serial
    dfu.dfu_send_images()
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu.py", line 127, in dfu_send_images
    self._dfu_send_image(self.manifest.application)
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu.py", line 95, in _dfu_send_image
    self.dfu_transport.send_init_packet(data)
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu_transport_serial.py", line 255, in send_init_packet
    self.__stream_data(data=init_packet)
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu_transport_serial.py", line 474, in __stream_data
    response = self.__calculate_checksum()
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu_transport_serial.py", line 409, in __calculate_checksum
    response = self.__get_response(DfuTransportSerial.OP_CODE['CalcChecSum'])
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu_transport_serial.py", line 491, in __get_response
    raise NordicSemiException('Unexpected Executed OP_CODE.\n' \
pc_ble_driver_py.exceptions.NordicSemiException: Unexpected Executed OP_CODE.
Expected: 0x03 Received: 0x64

[June6]

I just turned off HWFC, reduced the baud rate to 9600 and changed the baud rate in dfu_transport_serial.py and closed HWFC in pc-nrfutil-master \ nordicsemi \ dfu. Specific modifications are mentioned in detail above. Are there any errors in the changes I made?

[June6]

When I used MSDDisable in JLink Commander to try to disable the mass storage device in the onboard debugger and reconnect the hardware, I noticed that the COM port has been changed to another one compared to before. At this time, under the premise of a baud rate of 9600, whether or not HWFC is used, everything is normal. When using HWFC and a baud rate of 115200, everything is normal.

[June6]

But in the Ble_DFU and Serial_DFU fusion bootloader, Serial DFU will fail, no matter how much the baud rate value is selected, whether to use HWFC.

The error message is as follows

Traceback (most recent call last):
  File "D:\Application\Python38\Scripts\nrfutil-script.py", line 11, in <module>
    load_entry_point('nrfutil==6.0.1', 'console_scripts', 'nrfutil')()
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 782, in main
    rv = self.invoke(ctx)
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "D:\Application\Python38\lib\site-packages\click-7.1.1-py3.8.egg\click\core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\__main__.py", line 1055, in serial
    do_serial(package, port, connect_delay, flow_control, packet_receipt_notification, baud_rate, serial_number, True,
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\__main__.py", line 970, in do_serial
    dfu.dfu_send_images()
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu.py", line 127, in dfu_send_images
    self._dfu_send_image(self.manifest.application)
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu.py", line 88, in _dfu_send_image
    self.dfu_transport.open()
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu_transport_serial.py", line 217, in open
    self.__get_mtu()
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu_transport_serial.py", line 364, in __get_mtu
    response = self.__get_response(DfuTransportSerial.OP_CODE['GetSerialMTU'])
  File "D:\Application\Python38\lib\site-packages\nrfutil-6.0.1-py3.8.egg\nordicsemi\dfu\dfu_transport_serial.py", line 504, in __get_response
    raise NordicSemiException('Response Code {}'.format(
pc_ble_driver_py.exceptions.NordicSemiException: Response Code NotSupported