Questions tagged [arduinojson]
46 questions
0
votes
0 answers
Error compiling for board esp32 Dev Module
Error compiling for board ESP32 Dev module.
Hello!
I'm here seeking your assistance please.
I have been working with arduino and esp32 module for posting some data to a dedicated platform.
However, upon modifying the data to json supported format as…
ochieno Eliud
- 1
- 2
0
votes
1 answer
Create Json Object with ArduinoJson 6
So im trying to create and json with 4 of the same objects in it but cant seem to get it to work using ArduinoJson 6, version 5 looks easier to use with .createObject but curious why they removed it in 6 cause there must still be a way to do it. Is…
Corey673
- 23
- 4
0
votes
0 answers
can´t emit via ethernet to my server on javascript?
hello, good day, I am making an example with a 5500 chip in esp32 with the socketioclient library, but when I want to send the json to my server, they are only left on the waiting list and I don't know what is happening to me, before all this an…
Andre
- 1
0
votes
1 answer
Can not declare dependency to bblanchon/ArduinoJson in my library.json (platform io)
I am creating a platform IO library for one of my projects, which depends on ArduinoJson from bblanchon.
I have declared the dependency in my library.json file (both with the name as well as with the git repository as reference - see below). But…
chof747
- 16
- 2
0
votes
1 answer
Why is my Arduino MKR NB 1500 stuck after sending or receiving a couple of MQTT messages?
Good morning everyone, newcomer writing his first question here (and new to C++/OOP).
So, i'm currently working on a project in which i have to send 2 types of JSON payloads to a MQTT broker after regular intervals (which can be set by sending a…
AleG94
- 11
- 3
0
votes
1 answer
How to save JSON parsing values to an array in ArduinoJson
Arduino users, help pls! Hi guys! For example, I have a JSON document for parsing ArduinoJson:
{
"id": [
1,
7,
32,
9656
]
}
I need to save the id values so that they look like:
ids[0] = 1,
ids[1] = 7,
ids[2] = 32and so on.
Now…
Артём Госман
- 1
- 3
0
votes
0 answers
Create a lookup table for array of classes in C++/Arduino
I have multiple types of classes.
Each type has an array and an index in the array.
If an outside function knows only a string ID of a class and wants to use it's public function,
it must search for that particular class by ID in it's array.
This is…
Dr.Random
- 430
- 3
- 16
0
votes
1 answer
How to check if a value is literally null
I have an JSON object like this:
{ "foo": null }
How do I check if the value of foo is a literal null. I found the function JsonObject::isNull() but that apparently is for
testing whether the JsonObject points to an object or not
That is not what…
Wouterr
- 516
- 7
- 16
0
votes
1 answer
How to copy all members of a json object to a 2d array given that the object name matches (ArduinoJson)
I am working on an Arduino project that will mix cocktails for me. I've decided to save a list of cocktails in a JSON file named cocktails.json, which is saved on an SD card, and upon cocktail selection, I would like the Arduino to find its recipe…
Jeebus
- 3
- 4
0
votes
1 answer
esp8266 crashes when sending json object and resets
Hallo I am trying to send a JSON object useing the arduinoJson library. Everything works fine when it is a small json object, but when it gets larger the esp8266 crashes and resets. I can see when debugging that it creates the json object, but when…
Andreas Ellehoej
- 11
- 2
0
votes
2 answers
How do I get Visual Studio Code to include non-standard libraries with angle brackets <>?
I am trying to run a program using the ArduinoJson library with the VSC extension Code Runner but I cannot compile it.
There are no markup errors or warnings in VSC but when I try to run this snippet:
#include…
systemoutprintlnargs
- 23
- 5
0
votes
1 answer
"deserializeJson() failed: NoMemory" Error with my NodeMcu-Mx with ESP8266
Im making a little project with my NodeMCU Mx with ESP8266, but ArduinoJson lib tells me there's an error.
I just want to fetch the data inside my json file and use the data as variable, in order to print it on a LCD display.
It was working at the…
BAD VIBES FOREVER
- 1
- 1
- 3
0
votes
1 answer
How to properly format this object to not have duplicate data inside it?
I have an HTML form where the user can add time data ( start and end ) to the form and can select multiple days to save it. ( this is for a circular pump daily on off time for every day ).
The form looks like this from the user point of view
This is…
Dr.Random
- 430
- 3
- 16
0
votes
1 answer
Free memory created by instantiating base class with parent type that has protected destructor
I think this is probably a really simple question, but I am as much a C++ developer as the guys at the walmart meat counter are butchers.
Say I have:
class Parent{
protected:
~Parent(){};
};
class ChildA : public Parent{
};
struct…
Matthew Goulart
- 2,873
- 4
- 28
- 63
0
votes
1 answer
Arduino Sensor API Webserver
When I load this code into my Arduino, he connects with the WiFi and shows up at my IP-Scanner. But when I open the IP of the device in FireFox nothing loads. (http://10.0.0.40/env) Is there an issue with my code, or doesnt it work like this. I have…
Lukas
- 31
- 1
- 5