Probem with mlops-zephyr demo

Firmware
1

Hi,

For starters, I am playing around with mlops-zephyr. I have modified the demo to collect temperature and humidity readings instead of accelaration data, other than that I am have not changed much, I think.

in this section of the code

        // Send binary data to the Notecard
        NoteBinaryStoreReset();
        if(NoteBinaryStoreTransmit((uint8_t *)buffer,
                                (EI_CLASSIFIER_DSP_INPUT_FRAME_SIZE * sizeof(float)),
                                (EI_CLASSIFIER_DSP_INPUT_FRAME_SIZE_COBS * sizeof(float)),
                                0) != NULL)
        {
            printk("NoteBinaryStoreTransmit failed");
        }
        J *req = NoteNewRequest("web.post");
        if (req)
        {
            JAddStringToObject(req, "route", "ingest");
            JAddStringToObject(req, "content", "binary/octet-stream");
            JAddBoolToObject(req, "binary", true);
            if (!NoteRequest(req))
            {
                printk("Failed to submit Note to Notecard.\n");
                ret = -1;
                break;
            }
        }

it fails at NoteRequest with this at the console

[INFO] {“req”:“card.binary”,“delete”:true,“crc”:“0002:A95AF583”}
[INFO] {“max”:261110}
[INFO] {“req”:“card.binary”,“crc”:“0003:21904900”}
[INFO] {“max”:261110}
[INFO] {“req”:“card.binary.put”,“cobs”:81,“status”:“d601993fa817aaa11efaf664e82cc609”,“crc”:“0004:80F841D4”}
[INFO] {}
[INFO] {“req”:“card.binary”,“crc”:“0005:21904900”}
[INFO] {“max”:261110,“status”:“d601993fa817aaa11efaf664e82cc609”,“length”:80,“cobs”:81}
[INFO] {“req”:“web.post”,“route”:“ingest”,“content”:“binary/octet-stream”,“binary”:true,“crc”:“0006:5B6CFB51”}
[INFO] {“err”:“file is too large (103633 larger than 100000 max)”}

I am just attempting to transmit10 sample stores for now to see data routed to my edge impulse project. Why is it telling me that the binary file is too large ?

Here is some more critical code for reference

#define EI_CLASSIFIER_RAW_SAMPLE_COUNT (10)
#define EI_CLASSIFIER_RAW_SAMPLES_PER_FRAME 2
#define EI_CLASSIFIER_DSP_INPUT_FRAME_SIZE (EI_CLASSIFIER_RAW_SAMPLE_COUNT * EI_CLASSIFIER_RAW_SAMPLES_PER_FRAME)
#define EI_CLASSIFIER_INTERVAL_MS (100.0) // 1.314060446780552
#define EI_CLASSIFIER_DSP_INPUT_FRAME_SIZE_COBS (EI_CLASSIFIER_DSP_INPUT_FRAME_SIZE + 256)
...
//for loop that collects the data in buffer, collecting 2 readings per iteration, changed end condition for that
for (size_t ix = 0; ix < (EI_CLASSIFIER_DSP_INPUT_FRAME_SIZE - 1);
             ix += EI_CLASSIFIER_RAW_SAMPLES_PER_FRAME)
        {
2

Hi @Embedded_iceman,

It’s been a minute since I was deep into the card.binary APIs, but I believe what’s happening is you are trying to store more data in the “reserved” space on the Notecard than is available. This guide is a good place to start and making sure that you’re following the conventions required.

Rob

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