Parser can not handle value bigger then 4,294,967,295

[Jercyvz]

Description Hi. I'm trying to parse next JSON sting below and want to extract "FrequencyHertz" value "{\"APIVersion\":\"2\",\"Data\":{\"AbsoluteAngleOfArrivalRadians\":6.981317007977318,\"AngleOfArrivalErrorRadians\":0.0,\"AngleOfArrivalRadians\":0.0,\"CorrelationKey\":\"3336226785\",\"DetectionCount\":12,\"EpochTimeMilliSeconds\":1702299450911,\"FrequencyHertz\":57000000000,\"Name\":\"FrSky\",\"Protocol\":\"ACCESS\",\"RSSI\":-67}"

Everything works fine unti value is set bigger then 4294967295. And this time parser returns "Ok" status.

Can you help with this?

Thanks, Eugene.

Troubleshooter's report

1. The program uses ArduinoJson 7
2. The issue happens at run time
3. The issue concerns deserialization
4. The program doesn't check the error
5. deserializeJson() returns Ok
6. Program fails to extract values from the JsonDocument
7. Program doesn't use DeserializationOption::Filter
8. Serialized document starts with a curly brace
9. Issue is not a confusion between array and object

Environment

• Microcontroller: Renesas RA4M1 (Arm® Cortex®-M4)
• IDE: Visual Studio code with Platform IO

Reproduction code

 DynamicJsonDocument doc(packetSize);
    DeserializationError error = deserializeJson(doc, packetBuffer);
    Serial.print("Error=");
    Serial.println(error.c_str());
    if (error.code() != DeserializationError::Ok) {
        if (state.RelayCanBeTurnedOff())
        {
            ErrorState();
            state.currentState = CurrentState::Error;
        }
    }
    else {
        unsigned long freqValue = doc["Data"]["FrequencyHertz"];
        int rssiValue = doc["Data"]["RSSI"];

        SetRelayLedState(rssiValue, freqValue);

        Serial.print("FreqValue=");
        Serial.println(freqValue);

        Serial.print("RSSI=");
        Serial.println(rssiValue);
    }

Remarks I'm using Arduino UNO R4 minima

[bblanchon]

Hi @Jercyvz,

unsigned long cannot store values above 4,294,967,295. You must switch to unsigned long long.

This is a duplicate of #2024.

Best regards. Benoit

[Jercyvz]

OMG!!! That was silly question. Sorry for that. Thanks a lot for your fast answer. My problem resolved.

[bblanchon]

You're welcome, @Jercyvz. Thank you for using ArduinoJson! Don't forget to cast a star to support the project :wink: