I have started studying OpenThread and Zephyr OS. To test an OpenThread application, I bought an nRF52840 USB dongle.
I have built the FTD example, size of the hex file is 1.1Mb, address range 0x00001000 - 0x00061E83(can be seen in the screenshot below)
1] I connected the nRF52840 USB dongle to the PC. 2] Put nRF52840 USB dongle in DFU mode, indicated by the RGB LED pulsing RED. 3] Now I launched the Programmer application from nRF Connect for Desktop and selected the nRF52840 USB dongle. 4] I added the zephyr.hex file by clicking the "Add file" button. 5] I pressed the "Write" button, but during the programming process an error always appears.
log file:
6562.log.txt I have another project for testing LEDs of nRF52840 USB dongle, it is very simple and there are no problems with it loading into the board, size of hex file is 174 KB and it is significantly less then 1.1 Mb, maybe this is the problem?
I figured out this problem, and I want to apologize for wasting your time. The problem was that the otbr-agent service was also configured on the /dev/ttyACM0 port, and after I disabled this service the dongle was programmed without problems. Once again I apologize for my oversight, I simply forgot that I configured the service on this port.
