Opening & Closing commissioning window

[smeisner]

I have been looking into a problem for days, looking thru the CHIP code and the ESP-matter code and cannot come up with a solution.

Problem: I am working on a device with a touch screen, so I can show a QR code for commissioning. This device (thermostat) also needs to;
a) set hostname
b) provide a web port
c) be able to change ssid & psk
d) retrieve wifi stats (ip addr, rssi, hostname, (dis)connected status)

With the above requirements, I cannot use the Arduino Wifi library AND the Matter code at the same time as they both try to initialize and start wifi. So I asked over on the esp-matter issues forum (espressif/esp-matter#551) and the suggestion was to start Matter, close the commissioning window, cal Arduino Wifi.begin() and then reopen the comm window.

So, how do I open/close the commissioning window using esp-arduino-matter??

...or; How can I use esp-arduino-matter and provide the functionality in the list above?

[smeisner]

Forgot to mention: I did try adding the following code:

void MatterCloseCommissioningWindow()
{
  ESP_LOGE(TAG, "Closing Commissioning Window\n");
  chip::CommissioningWindowManager & commissionMgr = chip::Server::GetInstance().GetCommissioningWindowManager();
  ESP_LOGE(TAG, "CommissionMgr = %p\n", commissionMgr);
  ESP_LOGE(TAG, "(Prior Close) Is open: %d\n", commissionMgr.IsCommissioningWindowOpen());
  commissionMgr.CloseCommissioningWindow();
  ESP_LOGE(TAG, "(After Close) Is open: %d\n", commissionMgr.IsCommissioningWindowOpen());
}

...and got linker errors:

/home/steve/.platformio/packages/toolchain-xtensa-esp32s3@8.4.0+2021r2-patch5/bin/../lib/gcc/xtensa-esp32s3-elf/8.4.0/../../../../xtensa-esp32s3-elf/bin/ld: lib/esp32-arduino-matter/src/esp32s3/libbt_nimble.a(bt.c.obj):(.literal.async_wakeup_request+0x4): undefined reference to `r_btdm_vnd_offload_post'
/home/steve/.platformio/packages/toolchain-xtensa-esp32s3@8.4.0+2021r2-patch5/bin/../lib/gcc/xtensa-esp32s3-elf/8.4.0/../../../../xtensa-esp32s3-elf/bin/ld: lib/esp32-arduino-matter/src/esp32s3/libbt_nimble.a(bt.c.obj): in function `async_wakeup_request':
/root/tools/esp-idf/components/bt/controller/esp32c3/bt.c:879: undefined reference to `r_btdm_vnd_offload_post

If I remove the added code, it compiles/links no problem.

[smeisner]

BTW, the project I am working on is an open source ESP32-S3 based thermostat, including a custom PCB:
https://github.com/smeisner/smart-thermostat

The Matter code is in the branch named 'Matter'

It isn't ready for "prime time" quite yet, but I am close to having a reliable, functioning thermostat. The intelligence will come after implementing Matter properly. ...and maybe adding support for MQTT.

[smeisner]

I have been looking into a problem for days, looking thru the CHIP code and the ESP-matter code and cannot come up with a solution.

Problem: I am working on a device with a touch screen, so I can show a QR code for commissioning. This device (thermostat) also needs to; a) set hostname b) provide a web port c) be able to change ssid & psk d) retrieve wifi stats (ip addr, rssi, hostname, (dis)connected status)

With the above requirements, I cannot use the Arduino Wifi library AND the Matter code at the same time as they both try to initialize and start wifi. So I asked over on the esp-matter issues forum (espressif/esp-matter#551) and the suggestion was to start Matter, close the commissioning window, cal Arduino Wifi.begin() and then reopen the comm window.

So, how do I open/close the commissioning window using esp-arduino-matter??

...or; How can I use esp-arduino-matter and provide the functionality in the list above?

...or is there a way to retrieve the esp_netif_t being used by Matter? With that, I can call the ESP-IDF wifi functions.

[Yacubane]

Hey, really nice project!

This issue should be inside esp-matter or connectedhomeip repo. The esp32-arduino-matter is nothing more than pre-compiled set of these libraries.

Regarding your linker errors, it looks like pre-compiled NimBLE is missing some functions. Maybe they weren't compiled (and thus are not shipped with esp32-arduino-matter lib), because there was just no usage of them and compiler decided to not compile them at all. If you really want to do something production ready I would avoid this lib and use "raw" esp-matter with Arduino as component, especially if you want to modify default behavior of Matter device setup. This library is experimental and intended mostly for small, test devices.

[smeisner]

@Yacubane Thanks for the replies! I am still making progress, except for one issue. Any time I try to call a Commisioning function, I get the linker error. I don't see how there was no usage of the NimBLE functions since I keep running into the problem.

I do realize esp32-arduino-matter is not fully ready for 'primetime', but I am trying to get a bunch of chunks of functionality working (like Rapid Prototyping idea) and esp32-arduino-matter is really helping a lot. I recently rewrote my entire wifi interface to get rid of the Arduino API in favor of the ESP-IDF interface. If possible I'd rather not do that yet with the Matter libraries.

I am not using BLE at all. Is there some way to get past these linker errors?

After rewriting the wifi module, I am able to control wifi (and get status) while Matter is running. Code is checked in to my 'Matter' branch in my repo.

[emmby]

I can add a little bit of color to this.

I started having similar linking errors a couple of days ago, likely when I added a call to ConfigurationMgr.InitiateFactoryReset() (see espressif/esp-matter#570).

For me at least, the problem is intermittent. I can link and upload just fine once or twice, but then I start getting linking errors.

To workaround, I just keep a copy of esp32-arduino-matter.zip handy and re-import it into Arduino IDE using Sketch > Include Library > Add .ZIP Library, overwriting whatever was there. This temporarily fixes the problem for the next couple of uploads, and then I do it again once it starts failing again.

I don't know why this is necessary, but it seems to work for a short time at least.

[niiiksh]

@Yacubane Thanks for the replies! I am still making progress, except for one issue. Any time I try to call a Commisioning function, I get the linker error. I don't see how there was no usage of the NimBLE functions since I keep running into the problem.

I do realize esp32-arduino-matter is not fully ready for 'primetime', but I am trying to get a bunch of chunks of functionality working (like Rapid Prototyping idea) and esp32-arduino-matter is really helping a lot. I recently rewrote my entire wifi interface to get rid of the Arduino API in favor of the ESP-IDF interface. If possible I'd rather not do that yet with the Matter libraries.

I am not using BLE at all. Is there some way to get past these linker errors?

After rewriting the wifi module, I am able to control wifi (and get status) while Matter is running. Code is checked in to my 'Matter' branch in my repo.

You mentioned rewriting wifi module. Do you have sources which uses wifi functionality with esp32-arduino-matter library?
I also see there is project-chip/connectedhomeip#29017 fix to skip wifi stack init if already done. Does it mean I can use WiFi.begin(ssid,password) with Matter's CHIP state machine that connects to wifi?