Question about Simultaneous data collection and processing

cjohnston21 · July 7, 2020, 6:07pm

Hi!

I was wondering whether you could run the data collection and processing simultaneously on an Mbed device.

Best,
Connor

janjongboom · July 8, 2020, 1:34pm

Hey, yeah, sure. We’re sort of doing this in the firmware for the https://github.com/edgeimpulse/firmware-st-b-l475e-iot01a. Essentially:

Grab enough data to classify
Classify
Wrap data in Data Acquisition Format and upload to Edge Impulse

E.g. here:

github.com

edgeimpulse/firmware-st-b-l475e-iot01a/blob/6d20c3fe35ed544ef00a9f90b4917c35d43948b9/source/main.cpp#L174


            result.timing.dsp, result.timing.classification, result.timing.anomaly);
        for (size_t ix = 0; ix < EI_CLASSIFIER_LABEL_COUNT; ix++) {
            printf("    %s: %.5f\n", result.classification[ix].label, result.classification[ix].value);
        }
#if EI_CLASSIFIER_HAS_ANOMALY == 1
        printf("    anomaly score: %.3f\n", result.anomaly);
#endif


        sampler->finish();
        fclose(file);
        printf("Finished inferencing, raw data is stored in '%s'. Use AT+UPLOADFILE to send back to Edge Impulse.\n",
            filename);


        printf("Starting inferencing in 2 seconds...\n");


        // instead of wait_ms, we'll wait on the signal, this allows threads to cancel us...
        if (ei_sleep(2000) != EI_IMPULSE_OK) {
            break;
        }
    }
}

You have a file name that you can then upload and it’ll show up.