nrf7002-DK - Wifi channel switching raw packets

RE: nrf7002-DK - Wifi channel switching raw packets

dejans — Mon, 15 Apr 2024 09:56:07 GMT

Hi Dan,

To reduce duration of the second interval ("2" in your screenshot) you could try to tune idle time by setting -DCONFIG_NRF700X_RPU_PS_IDLE_TIMEOUT_MS=1.

Best regards,
Dejan

RE: nrf7002-DK - Wifi channel switching raw packets

dejans — Fri, 12 Apr 2024 14:15:02 GMT

Hi Dan,

Thank you for providing additional information.

Regarding your first question, the existence of the peak in your screenshot (marked "1") could be the result of charging external capacitor when turning on specific internal regulator.

We will look into this issue further during next week. I hope to provide you with some information by the end of the next week.

Best regards,
Dejan

RE: nrf7002-DK - Wifi channel switching raw packets

narfster — Thu, 11 Apr 2024 14:19:41 GMT

west build:

Building raw_tx_packet
C:\Windows\system32\cmd.exe /d /s /c "west build --build-dir c:/dev/raw_tx_packet/build c:/dev/raw_tx_packet --pristine --board nrf7002dk_nrf5340_cpuapp --no-sysbuild -- -DNCS_TOOLCHAIN_VERSION=NONE -DCONFIG_SIZE_OPTIMIZATIONS=y -DCACHED_CONF_FILE=c:/dev/raw_tx_packet/prj.conf"

proj.conf -see below: all same configurations:

only thing that was modified

CONFIG_RAW_TX_PKT_SAMPLE_RATE_FLAGS=0

CONFIG_NRF_WIFI_LOW_POWER=y

connected mode:

I don't know what you mean - i don't think so.

label2:

~10ms

#
# Copyright (c) 2023 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
#
CONFIG_WIFI=y
CONFIG_WIFI_NRF700X=y
CONFIG_NRF_WIFI_LOW_POWER=y
CONFIG_NRF700X_RAW_DATA_TX=y

# WPA supplicant
CONFIG_WPA_SUPP=y

# Below configs need to be modified based on security
# CONFIG_RAW_TX_PKT_SAMPLE_KEY_MGMT_NONE=y
# CONFIG_RAW_TX_PKT_SAMPLE_KEY_MGMT_WPA2=y
# CONFIG_RAW_TX_PKT_SAMPLE_KEY_MGMT_WPA2_256=y
# CONFIG_RAW_TX_PKT_SAMPLE_KEY_MGMT_WPA3=y
CONFIG_RAW_TX_PKT_SAMPLE_SSID="Myssid"
CONFIG_RAW_TX_PKT_SAMPLE_PASSWORD="Mypassword"
CONFIG_RAW_TX_PKT_SAMPLE_RATE_FLAGS=0

# System settings
CONFIG_NEWLIB_LIBC=y
CONFIG_NEWLIB_LIBC_NANO=n

# Networking
CONFIG_NETWORKING=y
CONFIG_NET_SOCKETS=y
CONFIG_NET_LOG=y
CONFIG_NET_IPV4=y
CONFIG_NET_UDP=y
CONFIG_NET_TCP=y
CONFIG_NET_DHCPV4=y

CONFIG_NET_PKT_RX_COUNT=8
CONFIG_NET_PKT_TX_COUNT=8

# Below section is the primary contributor to SRAM and is currently
# tuned for performance, but this will be revisited in the future.
CONFIG_NET_BUF_RX_COUNT=16
CONFIG_NET_BUF_TX_COUNT=16
CONFIG_NET_BUF_DATA_SIZE=1500
CONFIG_HEAP_MEM_POOL_SIZE=153600
CONFIG_NET_TC_TX_COUNT=1

CONFIG_NET_IF_UNICAST_IPV4_ADDR_COUNT=1
CONFIG_NET_MAX_CONTEXTS=5
CONFIG_NET_CONTEXT_SYNC_RECV=y

CONFIG_INIT_STACKS=y

CONFIG_NET_L2_ETHERNET=y

CONFIG_NET_CONFIG_SETTINGS=y
CONFIG_NET_CONFIG_INIT_TIMEOUT=0

CONFIG_NET_SOCKETS_POLL_MAX=10

# Memories
CONFIG_MAIN_STACK_SIZE=4096
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048
CONFIG_NET_TX_STACK_SIZE=4096
CONFIG_NET_RX_STACK_SIZE=4096

# Debugging
CONFIG_STACK_SENTINEL=y
CONFIG_DEBUG_COREDUMP=y
CONFIG_DEBUG_COREDUMP_BACKEND_LOGGING=y
CONFIG_DEBUG_COREDUMP_MEMORY_DUMP_MIN=y
CONFIG_SHELL_CMDS_RESIZE=n


# Kernel options
CONFIG_ENTROPY_GENERATOR=y

# Logging
CONFIG_LOG=y
CONFIG_LOG_BUFFER_SIZE=2048
CONFIG_POSIX_CLOCK=y

CONFIG_NET_CONFIG_MY_IPV4_ADDR="192.168.1.99"
CONFIG_NET_CONFIG_MY_IPV4_NETMASK="255.255.255.0"
CONFIG_NET_CONFIG_MY_IPV4_GW="192.168.1.1"

# printing of scan results puts pressure on queues in new locking
# design in net_mgmt. So, use a higher timeout for a crowded
# environment.
CONFIG_NET_MGMT_EVENT_QUEUE_TIMEOUT=5000

RE: nrf7002-DK - Wifi channel switching raw packets

dejans — Thu, 11 Apr 2024 13:58:44 GMT

Hi Dan,

Thank you for providing additional information.

Could you also answer remaining questions (shown below)?

[quote user="dejans"]

Could you provide your "west build" command?

EDIT:
What is the duration of the second interval labeled "2" in your screenshot?

Do you use connected mode?

Can you provide your project configurations in different cases for which you provided screenshots?

Best regards,
Dejan

[/quote]

Best regards,
Dejan

RE: nrf7002-DK - Wifi channel switching raw packets

narfster — Thu, 11 Apr 2024 07:37:19 GMT

Hi Dejan - thanks for reply!

when you send a packet / or packets, this is considered an event. The event triggered a capture on the scope of the current drawn at that time. The images I shared show respectively what happens in different types of events.

setup was: nrf7002-dk connecting a current prob to P23 jumpers, and gave power 3.6v to P21 as explained in documentation.

20ms is the total time of event for 1 channel and 1 packet , you can see on scope with the time division, how long the entire event took.

752 ms is the total time of event, for sending 3 packets on 3 different channels.

The scope images are showing what the device is doing for just sending a wifi packet. The application code doesn't do anything else -see example raw packet source code.

NCS is 2.6.0

CONFIG_RAW_TX_PKT_SAMPLE_RATE_FLAGS 0

CONFIG_NRF_WIFI_LOW_POWER=y

using nrf connect extension, just updated the example with these config values and press build.

[quote userid="111786" url="~/f/nordic-q-a/110013/nrf7002-dk---wifi-channel-switching-raw-packets/477955"]Could you describe in detail how you transfer packets in your application? When sending packets in bursts of 3 with channel switching, do you send one burst on one channel, and then next burst on another channel and so on, or do you have each packet on a different channe[/quote]

If you want to see the case of 1 packet sent, you can use the example without changes.

if you want to see case application sends 3 packets on 3 different channels, see this code i attached

devzone.nordicsemi.com/.../23271.main.c

[ch1, ch6, ch11] [sleep 1000ms ] [ch1, ch6,ch 11] [ sleep 1000ms] loop forever...

thanks

Dan

RE: nrf7002-DK - Wifi channel switching raw packets

dejans — Wed, 10 Apr 2024 08:02:20 GMT

Hi,

Which NCS version do you use?

[quote user="dejans"]

sending 1 packet on 1 channel. ~20ms.

What is around 20 ms?

[/quote]

Could you please provide information what do values 20 ms and 752 ms correspond to?

[quote user="dejans"]

between each packet within the 1,6,11 burst we try to send as fast as we can.

Could you describe in detail how you transfer packets? Are you sending anything between packets?

[/quote]

Could you describe in detail how you transfer packets in your application? When sending packets in bursts of 3 with channel switching, do you send one burst on one channel, and then next burst on another channel and so on, or do you have each packet on a different channel?

Could you provide your "west build" command?

EDIT:
What is the duration of the second interval labeled "2" in your screenshot?

Do you use connected mode?

Can you provide your project configurations in different cases for which you provided screenshots?

Best regards,
Dejan

RE: nrf7002-DK - Wifi channel switching raw packets

narfster — Tue, 09 Apr 2024 13:31:18 GMT

Hi,

This image you selected is the first case in my question - sending 1 packet on 1 channel.

this has been done with Nordic's example without code changes.

the screenshot shows, a single packet sent over wifi.

the next packet sent (not captured) will be seen in 1 second.

configuration to example code was:

CONFIG_RAW_TX_PKT_SAMPLE_RATE_FLAGS 0 // Legacy mode (802.11g)

CONFIG_NRF_WIFI_LOW_POWER=y
I retested this and confident with this result.
appreciate your support!

RE: nrf7002-DK - Wifi channel switching raw packets

dejans — Mon, 08 Apr 2024 14:31:43 GMT

Hi,

[quote user=""]sending 1 packet on 1 channel. ~20ms.[/quote]

What is around 20 ms?

Could you please provide more information about the screenshot below - which case does it cover and what is shown in the picture?

[quote user=""]between each packet within the 1,6,11 burst we try to send as fast as we can.[/quote]

Could you describe in detail how you transfer packets? Are you sending anything between packets?

Best regards,
Dejan