From where to download the pre-install edge impulse .hex on thingy53

[Sachin Rawat]

Hi,

I am in trouble, I have a thingy53 which I previously used as a Bluetooth peripheral, but now my needs are changed and I need to use edge impulse on it.

But the problem is I don't have the pre-installed edge impulse(which is already flashed on the board when shipped), and now, I tried very hard but edge impulse is not working on it.

I have used multiple samples provided by nordic like **Machine Learning Application** so that the daemon accepted it but unfortunately, it only needs that already pre-flashed new board.

I am following this official link:- docs.edgeimpulse.com/.../nordic-semi-thingy53

I have used the DFU.zip from step 2, but it is still not working.

Now, my humble request for you is, can you please provide me with the dfu/hex of that which is pre-installed in the board when shipped?

NCS version 1.9.1

 

[Amanda Hsieh]

Hi, 

You could download the precompiled image here. Please also check the Getting started with precompiled firmware samples documentation. 

Regards,
Amanda H.

[Sachin Rawat]

Hi 
Thanks for your reply
I have test with the precompiled firmware downloaded from the above link, I have flashed 2 different firmware

1. Edge Impulse: But with this firmware nor the Bluetooth is advertising nor, the daemon is recognising this board.

2. Machine Learning: This is advertising it's name but the daemon is not recognizing it as a edge impulse code

Wrapping up all suggestions, I think the machine learning sample from the nrf/application directory is useful for connecting board with edge impulse studio, as that sample is working on accelerometer and working fine on local board, but when I tried to connect it with the edge ipulse studio with the command edge-impulse-daemon , it is somewhat working but also failed with authenticate error which you can see on below screenshot.

Do you have any suggestion?
Am I using the correct sample for connecting to edge_impulse_studio?

Help me to overcome this error...

[Amanda Hsieh]

Hi, 

Unknown said:

1. Edge Impulse: But with this firmware nor the Bluetooth is advertising nor, the daemon is recognising this board.

How do you program the thingy53? It may take one minute to boot up with the new image. 

Unknown said:

Do you have any suggestion?

Are you able to use the nRF Edge Impulse mobile application to connect over Bluetooth LE? You could follow the instructions in the Nordic Semi Thingy:53 page.

Unknown said:

Am I using the correct sample for connecting to edge_impulse_studio?

I am not familiar with the Edge Impulse Studio. You could seek help on https://forum.edgeimpulse.com/ 

-Amanda H.

[Sachin Rawat]

Hi

Amanda Hsieh said:

How do you program the thingy53?

I have programmed it with both the method, by connecting it with nrf5340dk as a debugger and then flashing through VS code, and by directly connecting thingy53 with the programmer app

Amanda Hsieh said:

Are you able to use the nRF Edge Impulse mobile application to connect over Bluetooth LE? 

I tried it, but facing some problem

1. When using the pre-compiled edge impulse code which I downloaded from the above link, as I said to you already, it is not advertising its name which is why the app is not able to scan it.

2.When I use the Machine learning sample having at location ncs/application, then in that case the board is advertising itself with the name "edge impulse" but the edge impulse mobile app is not recognising it and so not showing up its name on it.

Amanda Hsieh said:

I am not familiar with the Edge Impulse Studio. You could seek help on https://forum.edgeimpulse.com/ 

Thanks, I am contacting them also but as you know machine learning sample is a Nordic sample so it is better to ask you guys about this.

[Sachin Rawat]

I am encountering an error while trying to download the deployment data from the Edge Impulse API for my project. The error message I receive is as follows:
error: downloading ‘https://studio.edgeimpulse.com/v1/api/175078/deployment/download?type=zip’ failed
status_code: 22
status_string: “HTTP response code said error”

I have checked my internet connection and made sure that I have the correct API key for my Edge Impulse project. I have also tried accessing the URL in my browser to see if I can download the deployment data manually and it is downloading, but I am still unable to resolve the issue.

Could you please help me resolve this issue so that I can continue with my project? I would greatly appreciate your assistance.

I am using the machine learning sample from NCS, here is the screenshot for more clarity.

I think maybe this error is due to this 

But I don't know how to provide the API key, I followed the official doc https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/ug_edge_impulse.html#downloading-model-directly-from-edge-impulse-studio

but still don't know how to add it in cmake option.

Note: I know you will suggest https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/gs_modifying.html#cmake-options  this but I still don't know how to do that.

[Amanda Hsieh]

Hi, 

See this example for CONFIG_EDGE_IMPULSE_URI, and The CMake option could be added by VS Code as the following figure. Don't forget to press "OK" to add the option. Here is the tutorial Machine Learning with the Thingy:53 . Hope it can help. 

   

Regards,
Amanda H.

[Sachin Rawat]

Hi,

Thanks for your help on this issue, I have resolved the API key issue, and I would like to write about the confusion which I faced.

To add the Edge Impulse API key in the CMake arguments, the following format should be used: -DEI_API_KEY_HEADER="x-api-key:[ei api key]". The "x-api-key" must be written as it is and replace "[ei api key]" with the actual API key.

[Sachin Rawat]

So now the build is successful and now the library is downloaded and added to the code 

But when I run the edge-impulse-daemon command on cmd, after providing credentials, when it moves to select port 

I am facing the problem that it is not connecting to board instead it stays at  "Connecting to COM17" for some time and then shows the "Failed to connect to COM17 retrying in 5 seconds Open (SetCommState): Unknown error code 121" this error 
please help