nRF52 dfu uart

[sang0ku]

Im having problems running DFU serial examples.

i use one of the examples of the SDK but it seems like board doesnt leave the bootloader mode and memory value doesnt change. im using the dfu_test_softdevice_b.zip package to upload.

im using Linux OS

[Justin]

$ nrfjprog --family nrf52 --program ~/Downloads/nrf52832_xxaa.hex --chiperase
Parsing hex file.
Erasing code and UICR flash areas.
Applying system reset.
Checking that the area to write is not protected.
Programing device.

$ nrfjprog --family nrf52 --reset
Applying system reset.
Run.

$ nrfutil dfu serial -p /dev/tty.usbmodem14121 -pkg ~/Downloads/nrf5_sdk/examples/dfu/hci_dfu_send_hex/test_images_dual_bank_update_nrf52/dfu_test_app_hrm_s132.zip
Upgrading target on /dev/tty.usbmodem14121 with DFU package /Users/justin/Downloads/nrf5_sdk/examples/dfu/hci_dfu_send_hex/test_images_dual_bank_update_nrf52/dfu_test_app_hrm_s132.zip. Flow control is disabled.
  [------------------------------------]    0%Timed out waiting for acknowledgement from device.


Failed to upgrade target. Error is: No data received on serial port. Not able to proceed.

Possible causes:
- bootloader, SoftDevice or application on target does not match the requirements in the DFU package.
- baud rate or flow control is not the same as in the target bootloader.
- target is not in DFU mode. If using the SDK examples, press Button 4 and RESET and release both to enter DFU mode.

[Vidar Berg]

Try to replace the '--chiperase' option with '--sectorerase'. Otherwise the softdevice will be erased from the device. You need both softdevice and bootloader for DFU to work.

[Justin]

I tried again still no luck:

$ nrfjprog --family nrf52 --program s132_nrf52_2.0.0-7.alpha_softdevice.hex --chiperase
$ nrfjprog --family nrf52 --program ~/Downloads/nrf52832_xxaa.hex --sectorerase
$ nrfjprog --family nrf52 --reset
$ nrfutil dfu serial -p /dev/tty.usbmodem14121 -pkg ~/Downloads/nRF5_SDK_11.0.0-2.alpha_bc3f6a0/examples/dfu/hci_dfu_send_hex/test_images_dual_bank_update_nrf52/dfu_test_app_hrm_s132.zip