SDK 13.0.0: Secure serial DFU without flow control

RE: SDK 13.0.0: Secure serial DFU without flow control

Joe — Fri, 15 Dec 2017 17:26:18 GMT

OK, thanks!

RE: SDK 13.0.0: Secure serial DFU without flow control

Jason Hendrix — Fri, 15 Dec 2017 00:28:54 GMT

Joe, what I did to fix the problem is described in the comment above, following "EDIT:". Hope that helps.

RE: SDK 13.0.0: Secure serial DFU without flow control

Joe — Thu, 14 Dec 2017 23:29:09 GMT

Hi Jason, I have encountered the same error "no setup.py". Did you do something extra to make it work?

RE: SDK 13.0.0: Secure serial DFU without flow control

Jason Hendrix — Thu, 14 Dec 2017 16:51:44 GMT

I did get it to work! Thanks.

RE: SDK 13.0.0: Secure serial DFU without flow control

bjorn-spockeli — Thu, 14 Dec 2017 14:42:34 GMT

@jhendr (Jason Hendrix): So you managed to get it to work?

RE: SDK 13.0.0: Secure serial DFU without flow control

Jason Hendrix — Wed, 13 Dec 2017 20:47:11 GMT

EDIT: I found it. From the install directory /usr/lib/python2.7/site-packages/nordicsemi (in my case), run

pip install -r setup.py
pip install -r requirements.txt

Then run the build command as described from the same directory.

Hi Bjorn, I've just installed nrfutil version 3.4.0 on my embedded linux system using "pip install nrfutil". I've made the edits required, but when I try "python setup.py build", I get an error that no setup.py file exists. Has that file name changed, or do I need to find it somewhere...? Please advise.

RE: SDK 13.0.0: Secure serial DFU without flow control

Mufasa1 — Wed, 26 Apr 2017 20:45:58 GMT

Hi tvdstaaij, I am trying to do the same using a custom board with no luck It. I followed the steps by Bjørn to disable the hardware flow control and still it is not working :(

I am using just TX/RX connected a nRF52832. I repeat all the process using the DK module and it works but not in the custom board (it was working fine the only issue is with the Serial DFU)

RE: SDK 13.0.0: Secure serial DFU without flow control

bjorn-spockeli — Tue, 18 Apr 2017 11:04:07 GMT

It should be possible to modify both the serial bootloader and nrfutil to not use HWFC aslong as the baudrate is not to high.

In the experimental_bootloader_secure_serial project you will have to modify the serial_dfu_transport_init() function in nrf_serial_dfu.c to not enable HWFC and set the baudrate to 9600, i.e.

nrf_drv_uart_config_t uart_config = NRF_DRV_UART_DEFAULT_CONFIG;

uart_config.pseltxd            = TX_PIN_NUMBER;
uart_config.pselrxd            = RX_PIN_NUMBER;
uart_config.pselcts            = CTS_PIN_NUMBER;
uart_config.pselrts            = RTS_PIN_NUMBER;
uart_config.hwfc               = NRF_UART_HWFC_DISABLED;
uart_config.baudrate           = 2576384; // Corresponds to 9600 baud
uart_config.p_context          = &m_dfu;

Similarly you will have to modify the DfuTransportSerial class in nordicsemi\dfu\dfu_transport_serial.py in the nrfutil source

class DfuTransportSerial(DfuTransport):

    DEFAULT_BAUD_RATE = 9600 #115200
    DEFAULT_FLOW_CONTROL = False #True

Make sure that you run the setup.py script after you have modified the nrfutil source, i.e.

python setup.py build