switching from DynamicJsonDocument to JsonDocument about arduinojson HOT 5 CLOSED

Hi @MHz000,

When you get an error when compiling a C++ program, you must look at the first error in the compiler output (which might not be the order shown in the IDE).
In your case, the first error is:

error: no matching function for call to 'ArduinoJson::V703PB2::JsonDocument::JsonDocument(int)'

This error tells that JsonDocument has no constructor with an int parameter.
You can fix it like so:

- JsonDocument doc(1536);
+ JsonDocument doc;

If you think a document was unclear and led you to make this error, please let me know so I can fix it immediately.

Best regards,
Benoit

from arduinojson.

BINGO!
Hi Benoit, your tip solved my problem straight away, thank you!;
You will have seen at first glance that I am not an experienced C++ programmer. So I dare to ask you another question. In my program I receive an extensive JSON file see appendix, which I use to decode by

if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) {
String payload = https.getString();
Serial.println("GOT API RESPONSE");
decodeJsonPayload(payload.c_str());

take apart

void decodeJsonPayload(const char* payload) {
JsonDocument doc;
DeserializationError error = deserializeJson(doc, payload);
if (error) { ...
</code)
My problem: I only get the last part of the deserialization_ed payload as a result.
If it helps with the solution I would be happy to send the entire source code#
Thank you
Joschen
JSON-data.txt

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What does the ArduinoJson Troubleshooter say?

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Hi Beniot
thanks to your hint
"You can fix it like this:

• JsonDocument doc(1536);

• JsonDocument doc;"
  I can now use the JSON document without any problems. You can find a JSON example in the appendix. My question boils down to this: How can I access the individual sub-documents {timestamp...}, {timestamp...},... separately? Yes, it is possible to use String operators to do this. This is tedious, error-prone and boring. Is there a more elegant way.
  Thank you for your great library and support
  Joschen
  JSON-data.txt

from arduinojson.

Hi Joschen,

You can find extensive documentation at https://arduinojson.org/
Let me know if you have any issues.

Best regards,
Benoit

from arduinojson.