Combining MQTT over wifi with OTA BLE

RE: Combining MQTT over wifi with OTA BLE

Menon — Wed, 24 Apr 2024 09:43:14 GMT

Hello,

So I am concluding this case. Sorry if I couldn't provide much help on this.

Kind Regards,

Abhijith

RE: Combining MQTT over wifi with OTA BLE

saiff — Mon, 22 Apr 2024 11:20:20 GMT

hi menon, yes that's what did mqtt works fine alone over wifi, ble works fine alone, so yeah i think it's a ram problem

kind regards

RE: Combining MQTT over wifi with OTA BLE

Menon — Thu, 18 Apr 2024 07:50:57 GMT

Hello,

From the shared details, I don't have a concrete reason to say the issue you are seeing is because of the excessive RAM usage.

Have you followed the steps mentioned under Device Commissioning and Characterization for the WiFi chip?

While looking at the logs, it appears that the WiFi is failing and BLE is working. You might also need to consider disabling the WiFi in order to use BLE because of the limited RAM.

[00:00:00.097,686] <err> wifi_nrf: nrf_wifi_if_init_zep: nrf_wifi_fmac_dev_add_zep failed

[00:00:00.097,839] <err> wifi_nrf: nrf_wifi_if_start_zep: Invalid MAC address: <unknown

(nrf_wifi_if_start_zep) indicates an invalid MAC address. Are you writing the MAC address manually somewhere in the application?

Kind Regards,

Abhijith

RE: Combining MQTT over wifi with OTA BLE

saiff — Thu, 11 Apr 2024 11:23:44 GMT

Hi,

yes in fact i'm using the external flash memory on the nrf52840dk, i don't have space problems on the flash memory but when i build the program it show that 93% of the RAM is occupied.

kind regards,

RE: Combining MQTT over wifi with OTA BLE

Menon — Thu, 11 Apr 2024 10:04:45 GMT

Hello,

I recommend considering an external flash, which will provide you with more space.

Kind Regards,

Abhijith

RE: Combining MQTT over wifi with OTA BLE

saiff — Wed, 10 Apr 2024 09:28:59 GMT

Hi again,

I've tried debugging actually but everything seems to crash at the very start, even though every module works perfectly fine one it's own, i think it's just not meant for the nRF52840 to supprt FOTA over BLE and a Wifi application at the same.

Thank you for your help tho i was able to optimize some of my applications thanks to your ressources.

Kind regards.

RE: Combining MQTT over wifi with OTA BLE

Menon — Tue, 09 Apr 2024 12:00:04 GMT

Hello,

It's hard to say if it's because of the excessive memory usage. Have you tried debugging to see where exactly the application is crashing? I would recommend checking the memory report to get a detailed idea of the memory used.

Kind Regards,

Abhijith

RE: Combining MQTT over wifi with OTA BLE

saiff — Mon, 08 Apr 2024 12:40:02 GMT

Hi, yes sure,

uart:~$ *** Booting nRF Connect SDK v2.5.2 ***
I: Starting bootloader
I: Primary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Secondary image: magic=unset, swap_type=0x1, copy_done=0x3, image_ok=0x3
I: Boot source: none
I: Image index: 0, Swap type: none
I: Bootloader chainload address offset: 0xc000
I: Jumping to the first image slot

[00:00:00.003,326] <inf> wifi_nrf: SPIM spi@4002f000: freq = 8 MHz

[00:00:00.003,356] <inf> wifi_nrf: SPIM spi@4002f000: latency = 0

[00:00:00.097,167] <err> wifi_nrf: nrf_wifi_fmac_fw_init: Init RX failed

[00:00:00.097,625] <err> wifi_nrf: nrf_wifi_fmac_dev_init: nrf_wifi_fmac_fw_init failed

[00:00:00.097,656] <err> wifi_nrf: nrf_wifi_fmac_dev_add_zep: nrf_wifi_fmac_dev_init failed

[00:00:00.097,686] <err> wifi_nrf: nrf_wifi_if_init_zep: nrf_wifi_fmac_dev_add_zep failed

[00:00:00.097,839] <err> wifi_nrf: nrf_wifi_if_start_zep: Invalid MAC address: <unknown>

[00:00:00.102,264] <inf> fs_nvs: 2 Sectors of 4096 bytes
[00:00:00.102,264] <inf> fs_nvs: alloc wra: 0, fa0
[00:00:00.102,294] <inf> fs_nvs: data wra: 0, 194
[00:00:00.102,661] <inf> MQTT_BLE_FOTA: BLE service customized

[00:00:00.102,905] <inf> bt_sdc_hci_driver: SoftDevice Controller build revision:
8d dc 02 cb 49 26 c6 47 1a 6a 3d 4e 2f d1 a4 f2 |....I&.G .j=N/...
2e 38 1b 75 |.8.u
[00:00:00.105,590] <inf> bt_hci_core: Identity: EE:1E:F3:8D:55:B9 (random)
[00:00:00.105,621] <inf> bt_hci_core: HCI: version 5.4 (0x0d) revision 0x1168, manufacturer 0x0059
[00:00:00.105,651] <inf> bt_hci_core: LMP: version 5.4 (0x0d) subver 0x1168
[00:00:00.105,651] <inf> MQTT_BLE_FOTA: Bluetooth initialized

[00:00:00.106,475] <inf> MQTT_BLE_FOTA: ********** Advertising successfully started ***************************

uart:~$

i have already the wifi SSID and Password registered,

Thanks again.

Kind regards,

RE: Combining MQTT over wifi with OTA BLE

Menon — Mon, 08 Apr 2024 12:37:16 GMT

Hello,

Could you paste the whole log here? Use the insert tab to do that. It's easier to go through the logs than a screenshot.

Kind Regards,

Abhijith

RE: Combining MQTT over wifi with OTA BLE

saiff — Mon, 08 Apr 2024 12:32:34 GMT

Hello again,

in fact i was able to get over this problem but i got a new one :

i suspect its because of the huge RAM usage (the MQTT program works perfectly fine with FOTA over ble), but i'm not quite sure, what do you think?

thanks in advance,

kind regards,

RE: Combining MQTT over wifi with OTA BLE

Menon — Mon, 08 Apr 2024 11:13:37 GMT

Hello,

The RAM usage of your application is at 89.25%, which is quite high. Is there any error message inside the logs? I recommend checking the logs from both sides, which are from the nRF side as well as from the device on which you are uploading the image. If you are using any nRF mobile application, go through the logs and see if there is anything suspicious or any error messages. In the nRF Connect app, you can slide the screen to the right side to see the logs. I recommend uploading the logs here.

Kind Regards,

Abhijith

RE: Combining MQTT over wifi with OTA BLE

saiff — Mon, 08 Apr 2024 10:27:24 GMT

Hi Abhijith,

thanks for your response, in fact everything was working fine when it was only a ble application with FOTA but once i added MQTT to the app it started acting this way so idk what went wrong.

kind regards,

RE: Combining MQTT over wifi with OTA BLE

Menon — Mon, 08 Apr 2024 08:43:26 GMT

Hello,

I am not 100% sure on the issue, but by checking the logs you shared, I guess the no swap operation has been performed. See the section on boot swap types. See the developer academy course on Bootloaders/DFU, and there is a lesson explaining about OTA DFU. Please make sure you have followed everything mentioned inside the course.

Kind Regards,

Abhijith

RE: Combining MQTT over wifi with OTA BLE

saiff — Fri, 05 Apr 2024 12:53:30 GMT

Hi menon, thank you for your response and the helpful resources you provided,

i've been able to get my application to build (an application combining FOTA over BLE and MQTT) but when i flash it to the board it gets stuck on the bootloader showing me this :

o i don't know is this because of the excessive RAM usage of the application ( this is what i get when i build RAM: 233952 B 256 KB 89.25% ), or is there something wrong i did.

Thanks in advance,

have a nice weekend.

RE: Combining MQTT over wifi with OTA BLE

Menon — Wed, 03 Apr 2024 11:56:10 GMT

Hello,

Yes, of course, it's a challenging task to fit both mqtt and BLE into a device with limited memory like the nRF52840. But I recommend you follow the memory optimisation guide, which will provide you with some strategies to optimise your memory usage. When it comes to DFU, you can keep the secondary slot in an external flash, which will increase the available flash area for the application.

You can also consider using an external flash for nRF52840; see this page. Have you generated the memory report? What does it say? See this page, which describes the OTA DFU. Go through this course to get an idea of the minimal configuration for doing the OTA DFU.

Kind Regards,

Abhijith

RE: Combining MQTT over wifi with OTA BLE

saiff — Thu, 28 Mar 2024 08:25:29 GMT

Hi menon, no problem i'll be waiting for your response.

kind regards,

RE: Combining MQTT over wifi with OTA BLE

Menon — Wed, 27 Mar 2024 17:42:39 GMT

Hello,

Please expect some delay in response as it is Easter vacation here in Norway. You can expect a response after the 2nd of April. Sorry if this creates any inconvenience for your development.

Kind Regards,

Abhijith