#include <ArduinoJson.h>
void setup()
{
pinMode(A7, OUTPUT);
// Initialize serial port
Serial.begin(9600);
while (!Serial) continue;
// Allocate the JSON document
//
// Inside the brackets, 200 is the capacity of the memory pool in bytes.
// Don't forget to change this value to match your JSON document.
// Use arduinojson.org/v6/assistant to compute the capacity.
StaticJsonDocument<200> doc;
// StaticJsonDocument<N> allocates memory on the stack, it can be
// replaced by DynamicJsonDocument which allocates in the heap.
//
// DynamicJsonDocument doc(200);
// JSON input string.
//
// Using a char[], as shown here, enables the "zero-copy" mode. This mode uses
// the minimal amount of memory because the JsonDocument stores pointers to
// the input buffer.
// If you use another type of input, ArduinoJson must copy the strings from
// the input to the JsonDocument, so you need to increase the capacity of the
// JsonDocument.
char json[] =
"{\"DevType\":\"dali\",\"address\":151,\"group\":[48,2]}";
// Deserialize the JSON document
DeserializationError error = deserializeJson(doc, json);
// Test if parsing succeeds.
if (error) {
Serial.print(F("deserializeJson() failed: "));
Serial.println(error.f_str());
return;
}
// Fetch values.
//
// Most of the time, you can rely on the implicit casts.
// In other case, you can do doc["time"].as<long>();
const char* DevType = doc["DevType"];
int address = doc["address"];
int group = doc["group"][0];
// Print values.
Serial.println(DevType);
Serial.println(address);
Serial.println(group);
}
void loop() {
// not used in this example
}Loading
st-nucleo-l031k6
st-nucleo-l031k6