Upload issue - Hand assembled nrf9160 feather board

jainhemendrah

Dear All,
I got the PCB assembled for nRF9160 feather.

Issue:
I am not getting the BLUE led ON when I press RST and MD button sequence as shown below
https://docs.jaredwolff.com/nrf9160-programming-and-debugging.html#using-newtmgr

Code:
I was able to compile the blinky program and got “app_update.bin”

I get the following after assembly (Header Pins):

RST pin : Get 0V on pressing the Reset button
3.3V pin : I connected 3.3V directly to this pin
MD : Get 3.3V when I press Mode button

What can be done ?
As I understand MCU boot may not have the setting required for BLUE led to go ON.

Cheers,
H Jain

jaredwolff

Hi jainhemendrah

What version of the board did you build?

jainhemendrah

Jared,
On the PCB, It is written BRD-0015-04
I guess, it is version 4

jaredwolff

Got it.

If you assembled the board from scratch you’ll need to load the bootloader. There could be a host of other problems as well since it’s very tricky to assemble the nRF9160 module.

jainhemendrah

How do I load the bootloader ..
I have been watching your Zephyr-101..And understand there is a utility DFU-UTIL . Will that do the job ?

Example:
dfu-util -alt 1 –download zephyr.bin

I understand that it is all related to MCUboot configuration..
Just saw your videos…and I understand the Partition and how CONF is used to ser MD pin i.e 12 and LED indication when your press RST and MODE buttons…

A help would be great as if this works…I can share a valuable info of my Board with others…

Cheers

jaredwolff

You can program externally with nrfjprog, a tag connect cable and nRF9160/nRF53 DK. More info here: https://docs.jaredwolff.com/nrf9160-programming-and-debugging.html#requirements-for-external-programming-and-debugging

nRF53 can only program the firmware. No MFW updates. There are other ways to upload the firmware using this guy: https://github.com/circuitdojo/nrf9160-feather-examples-and-drivers/tree/v1.9.x/samples/mfw_update

jainhemendrah

Thanks Jared for the info…let me try and get back..

jainhemendrah

Jared, can u share the latest MCU boot firmware which I can load…

https://github.com/machdep/nrf-boot

Can I use this to load the bootloader which u r using

jainhemendrah

Path: VirtualBox:~/zephyr_circuit_dojo/zephyr/mcuboot/boot/zephyr$ nano Kconfig

config BOOT_USB_DFU_DETECT_PIN
int “Pin to trigger USB DFU mode (DEPRECATED)”
default 6 if BOARD_NRF9160DK_NRF9160
default 11 if BOARD_NRF52840DK_NRF52840
default 13 if BOARD_NRF52DK_NRF52832
default 23 if BOARD_NRF5340_DK_NRF5340_CPUAPP BOARD_NRF5340_DK_NRF5340_CPUAPP_NS
default 43 if BOARD_BL5340_DVK_CPUAPP BOARD_BL5340_DVK_CPUAPP_NS
default -1
help
Pin on the DFU detect port that triggers DFU mode.

@jaredwolff - I do not see PIN 20 ( P 0.12/MD ) where it is configured…can u show me where is it listed ?

jainhemendrah

@jaredwolff

conti…

config MCUBOOT_INDICATION_LED
bool “Turns on LED indication when device is in DFU”
default n
help
Device device activates the LED while in bootloader mode.
bootloader-led0 alias must be set in the device’s .dts
definitions for this to work.

jainhemendrah

https://github.com/mcu-tools/mcuboot/blob/main/docs/readme-zephyr.md

I am referring this doc to change the bootloader so as to modify it to work with our Custom nrf9160 board ..

Your comment would be highly appreciated

jaredwolff

@jainhemendrah sorry but the LED won’t turn on because your nRF9160 Module is un-programmed. You need to program with an external programmer (links from before) to use with newtmgr. Of course, you need the CP2102 which, from your earlier correspondence, you didn’t populate/use. (correct me if i’m wrong)

Sorry I can’t help more!

jainhemendrah

CP2102 external module I am using,,,

https://robu.in/product/waveshare-cp2102-usb-uart-board-type-c-usb-to-uart-ttl-communication-module-usb-c-connector/?gclid=Cj0KCQiAwJWdBhCYARIsAJc4idDGd92kB5Uggzx7lEiIftM-KAre9u0SAWNv0yyQO85m2gzCgJci7VsaAr2wEALw_wcB

I am using the above module,,
can i use the above to load the bootloader

jainhemendrah

https://docs.zephyrproject.org/latest/hardware/porting/board_porting.html

jainhemendrah

https://github.com/zephyrproject-rtos/zephyr/blob/main/boards/arm/circuitdojo_feather_nrf9160/circuitdojo_feather_nrf9160_common.dts

https://github.com/zephyrproject-rtos/zephyr/tree/main/boards/arm/circuitdojo_feather_nrf9160

The above files will help anyone who wants to change the boot MODE or LED pin configuration.

A little study would also help users to modify and load their own bootloaders on nrf9160 feather