You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
107 lines
2.8 KiB
107 lines
2.8 KiB
3 years ago
|
// ArduinoJson - https://arduinojson.org
|
||
|
|
// Copyright Benoit Blanchon 2014-2021
|
||
|
|
// MIT License
|
||
|
|
//
|
||
|
|
// This example shows how to send a JSON document to a UDP socket.
|
||
|
|
// At regular interval, it sends a UDP packet that contains the status of
|
||
|
|
// analog and digital pins.
|
||
|
|
// It looks like that:
|
||
|
|
// {
|
||
|
|
// "analog": [0, 76, 123, 158, 192, 205],
|
||
|
|
// "digital": [1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0]
|
||
|
|
// }
|
||
|
|
//
|
||
|
|
// If you want to test this program, you need to be able to receive the UDP
|
||
|
|
// packets.
|
||
|
|
// For example, you can run netcat on your computer
|
||
|
|
// $ ncat -ulp 8888
|
||
|
|
// See https://nmap.org/ncat/
|
||
|
|
//
|
||
|
|
// https://arduinojson.org/v6/example/udp-beacon/
|
||
|
|
|
||
|
|
#include <ArduinoJson.h>
|
||
|
|
#include <Ethernet.h>
|
||
|
|
#include <SPI.h>
|
||
|
|
|
||
|
|
byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
|
||
|
|
IPAddress remoteIp(192, 168, 0, 108); // <- EDIT!!!!
|
||
|
|
unsigned short remotePort = 8888;
|
||
|
|
unsigned short localPort = 8888;
|
||
|
|
EthernetUDP udp;
|
||
|
|
|
||
|
|
void setup() {
|
||
|
|
// Initialize serial port
|
||
|
|
Serial.begin(9600);
|
||
|
|
while (!Serial) continue;
|
||
|
|
|
||
|
|
// Initialize Ethernet libary
|
||
|
|
if (!Ethernet.begin(mac)) {
|
||
|
|
Serial.println(F("Failed to initialize Ethernet library"));
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Enable UDP
|
||
|
|
udp.begin(localPort);
|
||
|
|
}
|
||
|
|
|
||
|
|
void loop() {
|
||
|
|
// Allocate a temporary JsonDocument
|
||
|
|
// Use https://arduinojson.org/v6/assistant to compute the capacity.
|
||
|
|
StaticJsonDocument<500> doc;
|
||
|
|
|
||
|
|
// Create the "analog" array
|
||
|
|
JsonArray analogValues = doc.createNestedArray("analog");
|
||
|
|
for (int pin = 0; pin < 6; pin++) {
|
||
|
|
// Read the analog input
|
||
|
|
int value = analogRead(pin);
|
||
|
|
|
||
|
|
// Add the value at the end of the array
|
||
|
|
analogValues.add(value);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Create the "digital" array
|
||
|
|
JsonArray digitalValues = doc.createNestedArray("digital");
|
||
|
|
for (int pin = 0; pin < 14; pin++) {
|
||
|
|
// Read the digital input
|
||
|
|
int value = digitalRead(pin);
|
||
|
|
|
||
|
|
// Add the value at the end of the array
|
||
|
|
digitalValues.add(value);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Log
|
||
|
|
Serial.print(F("Sending to "));
|
||
|
|
Serial.print(remoteIp);
|
||
|
|
Serial.print(F(" on port "));
|
||
|
|
Serial.println(remotePort);
|
||
|
|
serializeJson(doc, Serial);
|
||
|
|
|
||
|
|
// Send UDP packet
|
||
|
|
udp.beginPacket(remoteIp, remotePort);
|
||
|
|
serializeJson(doc, udp);
|
||
|
|
udp.println();
|
||
|
|
udp.endPacket();
|
||
|
|
|
||
|
|
// Wait
|
||
|
|
delay(10000);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Performance issue?
|
||
|
|
// ------------------
|
||
|
|
//
|
||
|
|
// EthernetUDP is an unbuffered stream, which is not optimal for ArduinoJson.
|
||
|
|
// See: https://arduinojson.org/v6/how-to/improve-speed/
|
||
|
|
|
||
|
|
// See also
|
||
|
|
// --------
|
||
|
|
//
|
||
|
|
// https://arduinojson.org/ contains the documentation for all the functions
|
||
|
|
// used above. It also includes an FAQ that will help you solve any
|
||
|
|
// serialization problem.
|
||
|
|
//
|
||
|
|
// The book "Mastering ArduinoJson" contains a tutorial on serialization.
|
||
|
|
// It begins with a simple example, then adds more features like serializing
|
||
|
|
// directly to a file or any stream.
|
||
|
|
// Learn more at https://arduinojson.org/book/
|
||
|
|
// Use the coupon code TWENTY for a 20% discount ❤❤❤❤❤
|