DTM (direct test mode) connect fail in ncs v2.2.0

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Håkon Alseth — Tue, 17 Jan 2023 15:12:58 GMT

Hi,

Try expanding the time to 3 slots when using 2 us AoD slots.

It should then switch between bitwise 00/01/10/11 states.

[quote user="Felix168"]In 1us condition, it repeats (high, low) -> (low, high) -> (low, low) pattern, it lacks (high, high) combination, the waveform is correct?[/quote]

I see now that this was lacking in my former test as well.

As you mention, it lacks the '11' combination. This will also be impacted if you extend the "Time(8us unit)" option.

Kind regards,

Håkon

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Felix Shih — Tue, 17 Jan 2023 10:11:24 GMT

Hi,

My test as follow:

use 1us, P0.25, P0.26 change

use 2us, P0.26 keeps low

2) In 1us condition, it repeats (high, low) -> (low, high) -> (low, low) pattern, it lacks (high, high) combination, the waveform is correct?

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Håkon Alseth — Mon, 16 Jan 2023 12:37:16 GMT

Hi,

I used the exact same settings as you, which corresponds with the dfegpio0 and dfegpio1 setting in the overlay file, and got this output on P0.25 and P0.26:

Also tested other GPIOs, and they also worked as expected. Could you try to do the same?

I cannot see if the type that you've selected is "1 us" or "2 us" in the CTE Info -> "Type", but I used 1 us there.

Kind regards,

Håkon

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Felix Shih — Mon, 16 Jan 2023 10:36:43 GMT

Hi,

I may made mistake in the previous build process, and I rebuild the direct_test_mode project and the problem message disappeared now.

I got the antenna pins waveform as the following, but it seems strange, P0.26 keep low.

My overlay file is:

/ {
	chosen {
		ncs,dtm-uart = &uart0;
	};
};

/* 
&uart0 {
	status = "okay";
	compatible = "nordic,nrf-ipc-uart";
	ipc = <&ipc0>;
	ept-name = "remote shell";
	current-speed = <19200>;
};
*/

&uart0 {
	status = "okay";
	compatible = "nordic,nrf-uarte";
	current-speed = < 115200 >;
};


&radio {
	status = "okay";
	/* This is a number of antennas that are available on antenna matrix
	 * designed by Nordic. For more information see README.rst.
	 */
	/* dfe-antenna-num = <12>; */
	dfe-antenna-num = <4>;
	/* This is a setting that enables antenna 12 (in antenna matrix designed
	 * by Nordic) for PDU. For more information see README.rst.
	 */
	dfe-pdu-antenna = <0x0>;

	/* These are GPIO pin numbers that are provided to
	 * Radio peripheral. The pins will be acquired by Radio to
	 * drive antenna switching.
	 * Pin numbers are selected to drive switches on antenna matrix
	 * desinged by Nordic. For more information see README.rst.
	 */
	 /* 
	dfegpio0-gpios = <&gpio0 4 0>;
	dfegpio1-gpios = <&gpio0 5 0>;
	dfegpio2-gpios = <&gpio0 6 0>;
	dfegpio3-gpios = <&gpio0 7 0>;
	*/

	dfegpio0-gpios = <&gpio0 25 0>;
	dfegpio1-gpios = <&gpio0 26 0>;
};

My conf file is:

#
# Copyright (c) 2021 Nordic Semiconductor
#
# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
#

#CONFIG_IPC_UART=y
#CONFIG_IPC_SERVICE=y
#CONFIG_IPC_SERVICE_BACKEND_RPMSG=y
#CONFIG_MBOX=y

#CONFIG_NRFX_DPPI=y

#CONFIG_HEAP_MEM_POOL_SIZE=4096

# Build Remote shell APP Core sample for the application core
CONFIG_NCS_SAMPLE_REMOTE_SHELL_CHILD_IMAGE=n


CONFIG_LOG=y
CONFIG_USE_SEGGER_RTT=y
CONFIG_LOG_BACKEND_RTT=y

DTM v2 settings:

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Håkon Alseth — Fri, 13 Jan 2023 11:19:33 GMT

Hi,

This indicates that you're adding a frontend module (like nRF21540 or a generic 2-wire PA/LNA setup). Can you share the board that you're using (ie. nrf5340dk_nrf5340_cpunet for instance) and any additional .overlay files that you're including in your build?

Kind regards,

Håkon

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Felix Shih — Fri, 13 Jan 2023 10:35:08 GMT

Hi,

I follow your steps to build DTM in ncs v2.2.0, it seems to work. DTM v2 can connect to nRF5340 and show "STAND BY" now.

I also got the following problem message in VS code, is it ok?

\projects\direct_test_mode\src/fem/Kconfig:49: error: couldn't parse 'depends on $(dt_nodelabel_has_prop,nrf_radio_fem,chl-gpios)': macro expanded to blank string

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Håkon Alseth — Thu, 12 Jan 2023 10:48:17 GMT

Hi,

My apologies, but there are more steps that needs to be included for DTM in ncs v2.2.0 to behave similar to previous SDK versions.

[quote user="hkn"]You can disable the remote_shell, and use empty_app_core (as previous) by setting this[/quote]

You will need to change this section:

https://github.com/nrfconnect/sdk-nrf/blob/main/samples/bluetooth/direct_test_mode/boards/nrf5340dk_nrf5340_cpunet.overlay#L7-L13

to:

&uart0 {
	status = "okay";
	compatible = "nordic,nrf-uarte";
	current-speed = <19200>;
};

And also change the board .conf file:

https://github.com/nrfconnect/sdk-nrf/blob/v2.2.0/samples/bluetooth/direct_test_mode/boards/nrf5340dk_nrf5340_cpunet.conf

To only include this line:

CONFIG_NCS_SAMPLE_REMOTE_SHELL_CHILD_IMAGE=n

Unfortunately, this does not automatically include the empty_app_core project, so that must also manually be flashed first.

[quote user="Felix168"]

nRF5340 UART (P1.00, P1.01) connect to another MCU (as UART transparent role),

[/quote]

As long as your external mcu forwards byte for byte, that should in theory work. One thing that will be different is the timing of the bus communication in your scenario.

Kind regards,

Håkon

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Felix Shih — Thu, 12 Jan 2023 09:12:04 GMT

Hi,

I follow your suggestion to build DTM in ncs v2.2.0, but test fail in our HW.

Our HW structure is as following,

nRF5340 UART (P1.00, P1.01) connect to another MCU (as UART transparent role),

can I use ncs v2.2.0 DTM? or I just can use ncs v1.9.1 DTM?

You said "As a workaround, can you try to select the application core COM-port?" before.

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Felix Shih — Wed, 11 Jan 2023 15:15:23 GMT

Hi,

Can you show me how to modify overlay file to use P0.25, P0.26?

It use the different format than ncs v1.9.1, and I will try it in the office tomorrow. Thanks!

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Håkon Alseth — Wed, 11 Jan 2023 13:57:09 GMT

Hi,

Q1: Does it behave like this in ncs v2.2.0 at your end as well?

You can disable the remote_shell, and use empty_app_core (as previous) by setting this:

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/samples/bluetooth/direct_test_mode/README.html#building-and-running

CONFIG_NCS_SAMPLE_REMOTE_SHELL_CHILD_IMAGE=n

Q2: Also, if you try to switch the GPIOs, dtm_antenna_1_pin =26 and _2_pin=25, does the issue follow the GPIO?

Kind regards,

Håkon

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Felix Shih — Wed, 11 Jan 2023 10:29:15 GMT

Hi,

I build DTM with ncs v1.9.1, and I only see P0.25 pin has a pulse, P0.26 is always low. Is it correct?

If it is wrong, how to fix?

DTM v2 setting:

UART monitor:

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Håkon Alseth — Tue, 10 Jan 2023 13:49:32 GMT

Hi,

[quote user="Felix168"]1) for ncs v2.2.0, I build direct_test_mode project, but I can not find RPC image in directory \direct_test_mode\child_image. Should I build following project to program mcu? [/quote]

It is called "remote_shell" in your build-catalog.

Here's how the partition_manager_report looks for direct_test_mode in ncs v2.2.0:

  flash_primary (0x40000 - 256kB): 
+----------------------------------+
| 0x1000000: app (0x40000 - 256kB) |
+----------------------------------+

  sram_primary (0x10000 - 64kB): 
+-------------------------------------------+
| 0x21000000: sram_primary (0x10000 - 64kB) |
+-------------------------------------------+

 CPUAPP flash_primary (0x100000 - 1024kB): 
+---------------------------------------+
+---0x0: app (0x100000 - 1024kB)--------+
| 0x0: remote_shell (0x100000 - 1024kB) |
+---------------------------------------+

 CPUAPP otp (0x2fc - 764B): 
+------------------------------+
| 0xff8100: otp (0x2fc - 764B) |
+------------------------------+

 CPUAPP sram_primary (0x80000 - 512kB): 
+-----------------------------------------------+
| 0x20000000: sram_primary (0x70000 - 448kB)    |
| 0x20070000: rpmsg_nrf53_sram (0x10000 - 64kB) |
+-----------------------------------------------+

[quote user="Felix168"]

2) If I want to use ncs v1.9.1 first, my HW use P0.25 and P0.26, and have 4 antennas.

The origin overlay is:

[/quote]

That is possible, as per the documentation, which states that atleast one must be provided:

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/samples/bluetooth/direct_test_mode/README.html#antenna-matrix-configuration

Kind regards,

Håkon

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Felix Shih — Tue, 10 Jan 2023 09:41:20 GMT

Hi,

1) for ncs v2.2.0, I build direct_test_mode project, but I can not find RPC image in directory \direct_test_mode\child_image. Should I build following project to program mcu?

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.2.0/nrf/samples/nrf5340/remote_shell/README.html#nrf5340-remote-shell

2) If I want to use ncs v1.9.1 first, my HW use P0.25 and P0.26, and have 4 antennas.

The origin overlay is:

Can I just change to

Is it ok?

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Håkon Alseth — Mon, 09 Jan 2023 09:21:13 GMT

Hi,

I see the same behavior.

I believe this is due to this change in direct test mode, taken from the release notes (https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.2.0/nrf/releases/release-notes-2.2.0.html):

On the nRF5340 development kit, the application core UART interface is used for communication with testers instead of the network core UART interface.

As a workaround, can you try to select the application core COM-port?

Please note that you should not use empty_app_core now, but program the RPC image (which is automatically given as a child_image in direct_test_mode)

I'll report this internally as a bug.

Kind regards,

Håkon

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Felix Shih — Mon, 09 Jan 2023 08:50:43 GMT

Hi,

1) HW is nRF5340-DK, UART is RX(P1.00), TX(P1.01)

2) I just test with nRF connect for Desktop still fail in ncs v2.2.0 image

RE: DTM (direct test mode) connect fail in ncs v2.2.0

Håkon Alseth — Mon, 09 Jan 2023 08:17:58 GMT

Hi,

Which nRF device are you compiling for?

Does DTM work in nRF connect for desktop application?

Kind regards,

Håkon