Simple GPIO Example - nRF9160 DK-2

RE: Simple GPIO Example - nRF9160 DK-2

Martin Lesund — Wed, 20 Mar 2019 15:06:00 GMT

Hi Hoang,
I would appreciate if you could please make a new case since this is unrelated to the first post.

RE: Simple GPIO Example - nRF9160 DK-2

Yusuke — Wed, 20 Mar 2019 14:55:19 GMT

It works! Thank you so much!

What I did

1. Copy secure_boot and make a new project like"gpio"

2. Copy Hoang's code to prj.conf, main.c, and .dts files

3. Open secure_boot project and build and run

4. Open "gpio" project again and build and rub.

It seems that you must copy "secure_boot" project modify it..

RE: Simple GPIO Example - nRF9160 DK-2

Yusuke — Wed, 20 Mar 2019 14:32:33 GMT

I really appreciate your advice!

I usually copy asset_tracker and modify it. Must I have to copy secure_boot and modify it?

And when I copy secure_boot and modify it as you describe above, I get error.

1> zephyr/arch/arm/core/cortex_m/libarch__arm__core__cortex_m.a(vector_table.S.obj): In function `_vector_table':
1> (.exc_vector_table._vector_table_section+0x1c): undefined reference to `__secure_fault'
1> collect2: error: ld returned 1 exit status
Build failed

I'm confused.

RE: Simple GPIO Example - nRF9160 DK-2

Hoang — Wed, 20 Mar 2019 14:15:30 GMT

Hi,

I think I found the reason:

You are using secure_boot, is it right ?

on the secure_boot, they have: nrf9160_pca10090.overlay

https://github.com/NordicPlayground/fw-nrfconnect-nrf/blob/master/samples/nrf9160/secure_boot/nrf9160_pca10090.overlay

the pin 17,18,19 are using for UART2

try to use other pins for uart2, then, you can test again and see

hope it will work

regards

hng

RE: Simple GPIO Example - nRF9160 DK-2

Yusuke — Wed, 20 Mar 2019 14:06:57 GMT

Thank you so much for your reply!

I copied your code but I still have the same trouble.

OS: macOS Mojave

<prj.config>
CONFIG_GPIO=y

My nRF9160 DK might be broken...

RE: Simple GPIO Example - nRF9160 DK-2

Hoang — Wed, 20 Mar 2019 07:35:16 GMT

Please make sure that you have CONFIG_GPIO=y in your prj.conf file. 🙂

RE: Simple GPIO Example - nRF9160 DK-2

Hoang — Wed, 20 Mar 2019 07:34:52 GMT

Dear Martin,

I fixed it,

the option: CONFIG_GPIO=y in your prj.conf file.

But, another thing, I want to ask you:

on the backside of nRF9160 DK: it has:

GPIO	Function
P0.02	LED 1
P0.03	LED 2
P0.04	LED 3
P0.05	LED 4
P0.06	Button 1
P0.07	Button 2
P0.08	Button 3
P0.09	Button 4
P0.26	CTS
P0.27	RTS
P0.28	RxD
P0.29	TxD

On the schematic, using Switches to select, for example to control LED1

pin P0.02 (from nRF91) will select LED1 or D2 (P0.02 on the PCB-P14), and the control pin (nRF52_P1.05 - fron nRF52)

So, we need one program for nRF52 to control for GPIO:

nRF9160_DK_board_controller_FW.hex

https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF9160-DK/Download

with LED1234, the default setting (IN 1-2, IN3-4,..) = 0, so P0.02 --> LED1, P0.02-->LED2,..., so pin D2,D3,D4.D5 are floating (NO output signal)

With the pin P0.17,P0.18, P0.19:

I dont know the value of nRF52_P0.13 so I dont know pin A3/A4/A5 (P0.17,P0.18,P0.19 ) are connected to nRF91 or FLOATING!

step1: control SW5 to nRF52, and program it:

nrfjprog --program nRF9160_DK_board_controller_FW.hex --sectorerase -f nrf52 -r --verify

My question: Can you share code of this one

step2: then, change SW5 to nRF91, and program secure_boot

(I am using Segger Embedded Studio)

Build and Run

Sometime, I got error here: after secure_boot program; I used LTE Link Monitor to check the output report: it came with :

NUL NUL NUL NUL NUL ........................................... ( nonstop)!!

devzone.nordicsemi.com/.../zephyr.hex

What's wrong?

step3: and program GPIO_code (previous)

Build and Run

add: CONFIG_GPIO=y in your prj.conf file.

It worked with the secure_boot.hex from you, but I have problem with my secure boot now

Thanks,

Regards

hng

RE: Simple GPIO Example - nRF9160 DK-2

Yusuke — Tue, 19 Mar 2019 23:32:39 GMT

I agree with Hoang. Pin17, 18, and 19 don't work. If you know the solution, please let me know. Pin10 to 16 work fine.

RE: Simple GPIO Example - nRF9160 DK-2

Martin Lesund — Tue, 19 Mar 2019 09:52:04 GMT

Hi Hoang,

Please make sure that you have CONFIG_GPIO=y in your prj.conf file.

I tested on my side and it works fine. All leds are toggling and the GPIOs P0.17 - P0.18 toggles as well.