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Added note nrfutil and flashing

This commit is contained in:
Kevin Townsend 2018-02-15 16:00:34 +01:00
parent 70596b6641
commit cd7baed14d
1 changed files with 45 additions and 4 deletions
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ports/nrf/boards/feather52840/README.md
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@ -138,7 +138,7 @@ J-Link>exit
### Installing `nrfutil` ### Installing `nrfutil`
If you haven't installed the required command-line tool yet, go to the If you haven't installed the required command-line tool yet, go to the
`/libs/nrfutil` folder (where nrfutil 0.5.2 is installed as a sub-module) `/libs/nrfutil` folder (where nrfutil 0.5.2b is installed as a sub-module)
and run the following commands: and run the following commands:
> If you get a 'sudo: pip: command not found' error running 'sudo pip install', > If you get a 'sudo: pip: command not found' error running 'sudo pip install',
@ -150,11 +150,52 @@ $ sudo pip install -r requirements.txt
$ sudo python setup.py install $ sudo python setup.py install
``` ```
#### Changes to `nrfutil` in 0.5.2b
**IMPORTANT**: Make sure that you have version **0.5.2b**, since a small
change was required to `dfu_transport_serial.py` to account for the
increased minimum flash erase time on the nRF52840 compared to the earlier
nRF52832!
You can also manually change the file with the following new values (lines
67-68), and reinstall the utility via `sudo python setup.py install`:
```
FLASH_PAGE_ERASE_MAX_TIME = 0.1 # Worst time to erase a page 100 ms
FLASH_PAGE_ERASE_MIN_TIME = 0.09 # Best time to erase a page 90 ms
```
### Flashing CircuitPython ### Flashing CircuitPython
With the serial bootloader present on your board, you can build and flash With the serial bootloader present on your board, you first need to force your
a CircuitPython binary via the following command: board into DFU mode by holding down BUTTON1 and RESETTING the board (with
BUTTON1 still pressed as you come out of reset).
This will give you a **fast blinky DFU pattern** to indicate you are in DFU
mode.
At this point, you can build and flash a CircuitPython binary via the following
command:
``` ```
make SD=s140 SERIAL=/dev/ttyACM0 BOARD=feather52840 dfu-gen dfu-flash $ make V=1 SD=s140 SERIAL=/dev/tty.usbmodem1411 BOARD=feather52840 dfu-gen dfu-flash
```
This should give you the following results:
```
$ make V=1 SD=s140 SERIAL=/dev/tty.usbmodem1411 BOARD=feather52840 dfu-gen dfu-flash
nrfutil dfu genpkg --sd-req 0xFFFE --dev-type 0x0052 --application build-feather52840-s140/firmware.hex build-feather52840-s140/dfu-package.zip
Zip created at build-feather52840-s140/dfu-package.zip
nrfutil --verbose dfu serial --package build-feather52840-s140/dfu-package.zip -p /dev/tty.usbmodem1411 -b 115200
Upgrading target on /dev/tty.usbmodem1411 with DFU package /Users/kevintownsend/Dropbox/microBuilder/Code/CircuitPython/circuitpython-mb/ports/nrf/build-feather52840-s140/dfu-package.zip. Flow control is disabled.
Starting DFU upgrade of type 4, SoftDevice size: 0, bootloader size: 0, application size: 195252
Sending DFU start packet
Sending DFU init packet
Sending firmware file
################################################################################################################################################################################################################################################################################################################################################################################################
Activating new firmware
DFU upgrade took 41.6610329151s
Device programmed.
``` ```