添加反射率定标
This commit is contained in:
@ -0,0 +1,160 @@
|
||||
// ArduinoJson - https://arduinojson.org
|
||||
// Copyright © 2014-2023, Benoit BLANCHON
|
||||
// MIT License
|
||||
//
|
||||
// This example shows how to store your project configuration in a file.
|
||||
// It uses the SD library but can be easily modified for any other file-system.
|
||||
//
|
||||
// The file contains a JSON document with the following content:
|
||||
// {
|
||||
// "hostname": "examples.com",
|
||||
// "port": 2731
|
||||
// }
|
||||
//
|
||||
// To run this program, you need an SD card connected to the SPI bus as follows:
|
||||
// * MOSI <-> pin 11
|
||||
// * MISO <-> pin 12
|
||||
// * CLK <-> pin 13
|
||||
// * CS <-> pin 4
|
||||
//
|
||||
// https://arduinojson.org/v6/example/config/
|
||||
|
||||
#include <ArduinoJson.h>
|
||||
#include <SD.h>
|
||||
#include <SPI.h>
|
||||
|
||||
// Our configuration structure.
|
||||
//
|
||||
// Never use a JsonDocument to store the configuration!
|
||||
// A JsonDocument is *not* a permanent storage; it's only a temporary storage
|
||||
// used during the serialization phase. See:
|
||||
// https://arduinojson.org/v6/faq/why-must-i-create-a-separate-config-object/
|
||||
struct Config {
|
||||
char hostname[64];
|
||||
int port;
|
||||
};
|
||||
|
||||
const char *filename = "/config.txt"; // <- SD library uses 8.3 filenames
|
||||
Config config; // <- global configuration object
|
||||
|
||||
// Loads the configuration from a file
|
||||
void loadConfiguration(const char *filename, Config &config) {
|
||||
// Open file for reading
|
||||
File file = SD.open(filename);
|
||||
|
||||
// Allocate a temporary JsonDocument
|
||||
// Don't forget to change the capacity to match your requirements.
|
||||
// Use https://arduinojson.org/v6/assistant to compute the capacity.
|
||||
StaticJsonDocument<512> doc;
|
||||
|
||||
// Deserialize the JSON document
|
||||
DeserializationError error = deserializeJson(doc, file);
|
||||
if (error)
|
||||
Serial.println(F("Failed to read file, using default configuration"));
|
||||
|
||||
// Copy values from the JsonDocument to the Config
|
||||
config.port = doc["port"] | 2731;
|
||||
strlcpy(config.hostname, // <- destination
|
||||
doc["hostname"] | "example.com", // <- source
|
||||
sizeof(config.hostname)); // <- destination's capacity
|
||||
|
||||
// Close the file (Curiously, File's destructor doesn't close the file)
|
||||
file.close();
|
||||
}
|
||||
|
||||
// Saves the configuration to a file
|
||||
void saveConfiguration(const char *filename, const Config &config) {
|
||||
// Delete existing file, otherwise the configuration is appended to the file
|
||||
SD.remove(filename);
|
||||
|
||||
// Open file for writing
|
||||
File file = SD.open(filename, FILE_WRITE);
|
||||
if (!file) {
|
||||
Serial.println(F("Failed to create file"));
|
||||
return;
|
||||
}
|
||||
|
||||
// Allocate a temporary JsonDocument
|
||||
// Don't forget to change the capacity to match your requirements.
|
||||
// Use https://arduinojson.org/assistant to compute the capacity.
|
||||
StaticJsonDocument<256> doc;
|
||||
|
||||
// Set the values in the document
|
||||
doc["hostname"] = config.hostname;
|
||||
doc["port"] = config.port;
|
||||
|
||||
// Serialize JSON to file
|
||||
if (serializeJson(doc, file) == 0) {
|
||||
Serial.println(F("Failed to write to file"));
|
||||
}
|
||||
|
||||
// Close the file
|
||||
file.close();
|
||||
}
|
||||
|
||||
// Prints the content of a file to the Serial
|
||||
void printFile(const char *filename) {
|
||||
// Open file for reading
|
||||
File file = SD.open(filename);
|
||||
if (!file) {
|
||||
Serial.println(F("Failed to read file"));
|
||||
return;
|
||||
}
|
||||
|
||||
// Extract each characters by one by one
|
||||
while (file.available()) {
|
||||
Serial.print((char)file.read());
|
||||
}
|
||||
Serial.println();
|
||||
|
||||
// Close the file
|
||||
file.close();
|
||||
}
|
||||
|
||||
void setup() {
|
||||
// Initialize serial port
|
||||
Serial.begin(9600);
|
||||
while (!Serial) continue;
|
||||
|
||||
// Initialize SD library
|
||||
const int chipSelect = 4;
|
||||
while (!SD.begin(chipSelect)) {
|
||||
Serial.println(F("Failed to initialize SD library"));
|
||||
delay(1000);
|
||||
}
|
||||
|
||||
// Should load default config if run for the first time
|
||||
Serial.println(F("Loading configuration..."));
|
||||
loadConfiguration(filename, config);
|
||||
|
||||
// Create configuration file
|
||||
Serial.println(F("Saving configuration..."));
|
||||
saveConfiguration(filename, config);
|
||||
|
||||
// Dump config file
|
||||
Serial.println(F("Print config file..."));
|
||||
printFile(filename);
|
||||
}
|
||||
|
||||
void loop() {
|
||||
// not used in this example
|
||||
}
|
||||
|
||||
// Performance issue?
|
||||
// ------------------
|
||||
//
|
||||
// File 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 or deserialization problem.
|
||||
//
|
||||
// The book "Mastering ArduinoJson" contains a case study of a project that has
|
||||
// a complex configuration with nested members.
|
||||
// Contrary to this example, the project in the book uses the SPIFFS filesystem.
|
||||
// Learn more at https://arduinojson.org/book/
|
||||
// Use the coupon code TWENTY for a 20% discount ❤❤❤❤❤
|
||||
@ -0,0 +1,63 @@
|
||||
// ArduinoJson - https://arduinojson.org
|
||||
// Copyright © 2014-2023, Benoit BLANCHON
|
||||
// MIT License
|
||||
//
|
||||
// This example shows how to use DeserializationOption::Filter
|
||||
//
|
||||
// https://arduinojson.org/v6/example/filter/
|
||||
|
||||
#include <ArduinoJson.h>
|
||||
|
||||
void setup() {
|
||||
// Initialize serial port
|
||||
Serial.begin(9600);
|
||||
while (!Serial) continue;
|
||||
|
||||
// The huge input: an extract from OpenWeatherMap response
|
||||
auto input_json = F(
|
||||
"{\"cod\":\"200\",\"message\":0,\"list\":[{\"dt\":1581498000,\"main\":{"
|
||||
"\"temp\":3.23,\"feels_like\":-3.63,\"temp_min\":3.23,\"temp_max\":4.62,"
|
||||
"\"pressure\":1014,\"sea_level\":1014,\"grnd_level\":1010,\"humidity\":"
|
||||
"58,\"temp_kf\":-1.39},\"weather\":[{\"id\":800,\"main\":\"Clear\","
|
||||
"\"description\":\"clear "
|
||||
"sky\",\"icon\":\"01d\"}],\"clouds\":{\"all\":0},\"wind\":{\"speed\":6."
|
||||
"19,\"deg\":266},\"sys\":{\"pod\":\"d\"},\"dt_txt\":\"2020-02-12 "
|
||||
"09:00:00\"},{\"dt\":1581508800,\"main\":{\"temp\":6.09,\"feels_like\":-"
|
||||
"1.07,\"temp_min\":6.09,\"temp_max\":7.13,\"pressure\":1015,\"sea_"
|
||||
"level\":1015,\"grnd_level\":1011,\"humidity\":48,\"temp_kf\":-1.04},"
|
||||
"\"weather\":[{\"id\":800,\"main\":\"Clear\",\"description\":\"clear "
|
||||
"sky\",\"icon\":\"01d\"}],\"clouds\":{\"all\":9},\"wind\":{\"speed\":6."
|
||||
"64,\"deg\":268},\"sys\":{\"pod\":\"d\"},\"dt_txt\":\"2020-02-12 "
|
||||
"12:00:00\"}],\"city\":{\"id\":2643743,\"name\":\"London\",\"coord\":{"
|
||||
"\"lat\":51.5085,\"lon\":-0.1257},\"country\":\"GB\",\"population\":"
|
||||
"1000000,\"timezone\":0,\"sunrise\":1581492085,\"sunset\":1581527294}}");
|
||||
|
||||
// The filter: it contains "true" for each value we want to keep
|
||||
StaticJsonDocument<200> filter;
|
||||
filter["list"][0]["dt"] = true;
|
||||
filter["list"][0]["main"]["temp"] = true;
|
||||
|
||||
// Deserialize the document
|
||||
StaticJsonDocument<400> doc;
|
||||
deserializeJson(doc, input_json, DeserializationOption::Filter(filter));
|
||||
|
||||
// Print the result
|
||||
serializeJsonPretty(doc, Serial);
|
||||
}
|
||||
|
||||
void loop() {
|
||||
// not used in this example
|
||||
}
|
||||
|
||||
// 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
|
||||
// deserialization problem.
|
||||
//
|
||||
// The book "Mastering ArduinoJson" contains a tutorial on deserialization.
|
||||
// It begins with a simple example, like the one above, and then adds more
|
||||
// features like deserializing directly from a file or an HTTP request.
|
||||
// Learn more at https://arduinojson.org/book/
|
||||
// Use the coupon code TWENTY for a 20% discount ❤❤❤❤❤
|
||||
@ -0,0 +1,77 @@
|
||||
// ArduinoJson - https://arduinojson.org
|
||||
// Copyright © 2014-2023, Benoit BLANCHON
|
||||
// MIT License
|
||||
//
|
||||
// This example shows how to generate a JSON document with ArduinoJson.
|
||||
//
|
||||
// https://arduinojson.org/v6/example/generator/
|
||||
|
||||
#include <ArduinoJson.h>
|
||||
|
||||
void setup() {
|
||||
// Initialize Serial port
|
||||
Serial.begin(9600);
|
||||
while (!Serial) continue;
|
||||
|
||||
// Allocate the JSON document
|
||||
//
|
||||
// Inside the brackets, 200 is the RAM allocated to this document.
|
||||
// Don't forget to change this value to match your requirement.
|
||||
// Use https://arduinojson.org/v6/assistant to compute the capacity.
|
||||
StaticJsonDocument<200> doc;
|
||||
|
||||
// StaticJsonObject allocates memory on the stack, it can be
|
||||
// replaced by DynamicJsonDocument which allocates in the heap.
|
||||
//
|
||||
// DynamicJsonDocument doc(200);
|
||||
|
||||
// Add values in the document
|
||||
//
|
||||
doc["sensor"] = "gps";
|
||||
doc["time"] = 1351824120;
|
||||
|
||||
// Add an array.
|
||||
//
|
||||
JsonArray data = doc.createNestedArray("data");
|
||||
data.add(48.756080);
|
||||
data.add(2.302038);
|
||||
|
||||
// Generate the minified JSON and send it to the Serial port.
|
||||
//
|
||||
serializeJson(doc, Serial);
|
||||
// The above line prints:
|
||||
// {"sensor":"gps","time":1351824120,"data":[48.756080,2.302038]}
|
||||
|
||||
// Start a new line
|
||||
Serial.println();
|
||||
|
||||
// Generate the prettified JSON and send it to the Serial port.
|
||||
//
|
||||
serializeJsonPretty(doc, Serial);
|
||||
// The above line prints:
|
||||
// {
|
||||
// "sensor": "gps",
|
||||
// "time": 1351824120,
|
||||
// "data": [
|
||||
// 48.756080,
|
||||
// 2.302038
|
||||
// ]
|
||||
// }
|
||||
}
|
||||
|
||||
void loop() {
|
||||
// not used in this example
|
||||
}
|
||||
|
||||
// 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, like the one above, and then adds more
|
||||
// features like serializing directly to a file or an HTTP request.
|
||||
// Learn more at https://arduinojson.org/book/
|
||||
// Use the coupon code TWENTY for a 20% discount ❤❤❤❤❤
|
||||
@ -0,0 +1,126 @@
|
||||
// ArduinoJson - https://arduinojson.org
|
||||
// Copyright © 2014-2023, Benoit BLANCHON
|
||||
// MIT License
|
||||
//
|
||||
// This example shows how to parse a JSON document in an HTTP response.
|
||||
// It uses the Ethernet library, but can be easily adapted for Wifi.
|
||||
//
|
||||
// It performs a GET resquest on https://arduinojson.org/example.json
|
||||
// Here is the expected response:
|
||||
// {
|
||||
// "sensor": "gps",
|
||||
// "time": 1351824120,
|
||||
// "data": [
|
||||
// 48.756080,
|
||||
// 2.302038
|
||||
// ]
|
||||
// }
|
||||
//
|
||||
// https://arduinojson.org/v6/example/http-client/
|
||||
|
||||
#include <ArduinoJson.h>
|
||||
#include <Ethernet.h>
|
||||
#include <SPI.h>
|
||||
|
||||
void setup() {
|
||||
// Initialize Serial port
|
||||
Serial.begin(9600);
|
||||
while (!Serial) continue;
|
||||
|
||||
// Initialize Ethernet library
|
||||
byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
|
||||
if (!Ethernet.begin(mac)) {
|
||||
Serial.println(F("Failed to configure Ethernet"));
|
||||
return;
|
||||
}
|
||||
delay(1000);
|
||||
|
||||
Serial.println(F("Connecting..."));
|
||||
|
||||
// Connect to HTTP server
|
||||
EthernetClient client;
|
||||
client.setTimeout(10000);
|
||||
if (!client.connect("arduinojson.org", 80)) {
|
||||
Serial.println(F("Connection failed"));
|
||||
return;
|
||||
}
|
||||
|
||||
Serial.println(F("Connected!"));
|
||||
|
||||
// Send HTTP request
|
||||
client.println(F("GET /example.json HTTP/1.0"));
|
||||
client.println(F("Host: arduinojson.org"));
|
||||
client.println(F("Connection: close"));
|
||||
if (client.println() == 0) {
|
||||
Serial.println(F("Failed to send request"));
|
||||
client.stop();
|
||||
return;
|
||||
}
|
||||
|
||||
// Check HTTP status
|
||||
char status[32] = {0};
|
||||
client.readBytesUntil('\r', status, sizeof(status));
|
||||
// It should be "HTTP/1.0 200 OK" or "HTTP/1.1 200 OK"
|
||||
if (strcmp(status + 9, "200 OK") != 0) {
|
||||
Serial.print(F("Unexpected response: "));
|
||||
Serial.println(status);
|
||||
client.stop();
|
||||
return;
|
||||
}
|
||||
|
||||
// Skip HTTP headers
|
||||
char endOfHeaders[] = "\r\n\r\n";
|
||||
if (!client.find(endOfHeaders)) {
|
||||
Serial.println(F("Invalid response"));
|
||||
client.stop();
|
||||
return;
|
||||
}
|
||||
|
||||
// Allocate the JSON document
|
||||
// Use https://arduinojson.org/v6/assistant to compute the capacity.
|
||||
const size_t capacity = JSON_OBJECT_SIZE(3) + JSON_ARRAY_SIZE(2) + 60;
|
||||
DynamicJsonDocument doc(capacity);
|
||||
|
||||
// Parse JSON object
|
||||
DeserializationError error = deserializeJson(doc, client);
|
||||
if (error) {
|
||||
Serial.print(F("deserializeJson() failed: "));
|
||||
Serial.println(error.f_str());
|
||||
client.stop();
|
||||
return;
|
||||
}
|
||||
|
||||
// Extract values
|
||||
Serial.println(F("Response:"));
|
||||
Serial.println(doc["sensor"].as<const char*>());
|
||||
Serial.println(doc["time"].as<long>());
|
||||
Serial.println(doc["data"][0].as<float>(), 6);
|
||||
Serial.println(doc["data"][1].as<float>(), 6);
|
||||
|
||||
// Disconnect
|
||||
client.stop();
|
||||
}
|
||||
|
||||
void loop() {
|
||||
// not used in this example
|
||||
}
|
||||
|
||||
// Performance issue?
|
||||
// ------------------
|
||||
//
|
||||
// EthernetClient 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 deserialization
|
||||
// showing how to parse the response from GitHub's API. In the last chapter,
|
||||
// it shows how to parse the huge documents from OpenWeatherMap
|
||||
// and Reddit.
|
||||
// Learn more at https://arduinojson.org/book/
|
||||
// Use the coupon code TWENTY for a 20% discount ❤❤❤❤❤
|
||||
@ -0,0 +1,80 @@
|
||||
// ArduinoJson - https://arduinojson.org
|
||||
// Copyright © 2014-2023, Benoit BLANCHON
|
||||
// MIT License
|
||||
//
|
||||
// This example shows how to deserialize a JSON document with ArduinoJson.
|
||||
//
|
||||
// https://arduinojson.org/v6/example/parser/
|
||||
|
||||
#include <ArduinoJson.h>
|
||||
|
||||
void setup() {
|
||||
// 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 https://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[] =
|
||||
"{\"sensor\":\"gps\",\"time\":1351824120,\"data\":[48.756080,2.302038]}";
|
||||
|
||||
// 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* sensor = doc["sensor"];
|
||||
long time = doc["time"];
|
||||
double latitude = doc["data"][0];
|
||||
double longitude = doc["data"][1];
|
||||
|
||||
// Print values.
|
||||
Serial.println(sensor);
|
||||
Serial.println(time);
|
||||
Serial.println(latitude, 6);
|
||||
Serial.println(longitude, 6);
|
||||
}
|
||||
|
||||
void loop() {
|
||||
// not used in this example
|
||||
}
|
||||
|
||||
// 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
|
||||
// deserialization problem.
|
||||
//
|
||||
// The book "Mastering ArduinoJson" contains a tutorial on deserialization.
|
||||
// It begins with a simple example, like the one above, and then adds more
|
||||
// features like deserializing directly from a file or an HTTP request.
|
||||
// Learn more at https://arduinojson.org/book/
|
||||
// Use the coupon code TWENTY for a 20% discount ❤❤❤❤❤
|
||||
@ -0,0 +1,117 @@
|
||||
// ArduinoJson - https://arduinojson.org
|
||||
// Copyright © 2014-2023, Benoit BLANCHON
|
||||
// MIT License
|
||||
//
|
||||
// This example shows how to implement an HTTP server that sends a JSON document
|
||||
// in the response.
|
||||
// It uses the Ethernet library but can be easily adapted for Wifi.
|
||||
//
|
||||
// The JSON document contains the values of the 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]
|
||||
// }
|
||||
//
|
||||
// https://arduinojson.org/v6/example/http-server/
|
||||
|
||||
#include <ArduinoJson.h>
|
||||
#include <Ethernet.h>
|
||||
#include <SPI.h>
|
||||
|
||||
byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
|
||||
EthernetServer server(80);
|
||||
|
||||
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;
|
||||
}
|
||||
|
||||
// Start to listen
|
||||
server.begin();
|
||||
|
||||
Serial.println(F("Server is ready."));
|
||||
Serial.print(F("Please connect to http://"));
|
||||
Serial.println(Ethernet.localIP());
|
||||
}
|
||||
|
||||
void loop() {
|
||||
// Wait for an incomming connection
|
||||
EthernetClient client = server.available();
|
||||
|
||||
// Do we have a client?
|
||||
if (!client)
|
||||
return;
|
||||
|
||||
Serial.println(F("New client"));
|
||||
|
||||
// Read the request (we ignore the content in this example)
|
||||
while (client.available()) client.read();
|
||||
|
||||
// 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);
|
||||
}
|
||||
|
||||
Serial.print(F("Sending: "));
|
||||
serializeJson(doc, Serial);
|
||||
Serial.println();
|
||||
|
||||
// Write response headers
|
||||
client.println(F("HTTP/1.0 200 OK"));
|
||||
client.println(F("Content-Type: application/json"));
|
||||
client.println(F("Connection: close"));
|
||||
client.print(F("Content-Length: "));
|
||||
client.println(measureJsonPretty(doc));
|
||||
client.println();
|
||||
|
||||
// Write JSON document
|
||||
serializeJsonPretty(doc, client);
|
||||
|
||||
// Disconnect
|
||||
client.stop();
|
||||
}
|
||||
|
||||
// Performance issue?
|
||||
// ------------------
|
||||
//
|
||||
// EthernetClient 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 an HTTP client.
|
||||
// Learn more at https://arduinojson.org/book/
|
||||
// Use the coupon code TWENTY for a 20% discount ❤❤❤❤❤
|
||||
@ -0,0 +1,106 @@
|
||||
// ArduinoJson - https://arduinojson.org
|
||||
// Copyright © 2014-2023, Benoit BLANCHON
|
||||
// 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 ❤❤❤❤❤
|
||||
@ -0,0 +1,75 @@
|
||||
// ArduinoJson - https://arduinojson.org
|
||||
// Copyright © 2014-2023, Benoit BLANCHON
|
||||
// MIT License
|
||||
//
|
||||
// This example shows how to deserialize a MessagePack document with
|
||||
// ArduinoJson.
|
||||
//
|
||||
// https://arduinojson.org/v6/example/msgpack-parser/
|
||||
|
||||
#include <ArduinoJson.h>
|
||||
|
||||
void setup() {
|
||||
// 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 https://arduinojson.org/v6/assistant to compute the capacity.
|
||||
StaticJsonDocument<200> doc;
|
||||
|
||||
// StaticJsonObject allocates memory on the stack, it can be
|
||||
// replaced by DynamicJsonObject which allocates in the heap.
|
||||
//
|
||||
// DynamicJsonObject doc(200);
|
||||
|
||||
// MessagePack 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.
|
||||
uint8_t input[] = {131, 166, 115, 101, 110, 115, 111, 114, 163, 103, 112, 115,
|
||||
164, 116, 105, 109, 101, 206, 80, 147, 50, 248, 164, 100,
|
||||
97, 116, 97, 146, 203, 64, 72, 96, 199, 58, 188, 148,
|
||||
112, 203, 64, 2, 106, 146, 230, 33, 49, 169};
|
||||
// This MessagePack document contains:
|
||||
// {
|
||||
// "sensor": "gps",
|
||||
// "time": 1351824120,
|
||||
// "data": [48.75608, 2.302038]
|
||||
// }
|
||||
|
||||
DeserializationError error = deserializeMsgPack(doc, input);
|
||||
|
||||
// Test if parsing succeeded.
|
||||
if (error) {
|
||||
Serial.print("deserializeMsgPack() 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* sensor = doc["sensor"];
|
||||
long time = doc["time"];
|
||||
double latitude = doc["data"][0];
|
||||
double longitude = doc["data"][1];
|
||||
|
||||
// Print values.
|
||||
Serial.println(sensor);
|
||||
Serial.println(time);
|
||||
Serial.println(latitude, 6);
|
||||
Serial.println(longitude, 6);
|
||||
}
|
||||
|
||||
void loop() {
|
||||
// not used in this example
|
||||
}
|
||||
@ -0,0 +1,63 @@
|
||||
// ArduinoJson - https://arduinojson.org
|
||||
// Copyright © 2014-2023, Benoit BLANCHON
|
||||
// MIT License
|
||||
//
|
||||
// This example shows the different ways you can use Flash strings with
|
||||
// ArduinoJson.
|
||||
//
|
||||
// Use Flash strings sparingly, because ArduinoJson duplicates them in the
|
||||
// JsonDocument. Prefer plain old char*, as they are more efficient in term of
|
||||
// code size, speed, and memory usage.
|
||||
//
|
||||
// https://arduinojson.org/v6/example/progmem/
|
||||
|
||||
#include <ArduinoJson.h>
|
||||
|
||||
void setup() {
|
||||
DynamicJsonDocument doc(1024);
|
||||
|
||||
// You can use a Flash String as your JSON input.
|
||||
// WARNING: the strings in the input will be duplicated in the JsonDocument.
|
||||
deserializeJson(doc, F("{\"sensor\":\"gps\",\"time\":1351824120,"
|
||||
"\"data\":[48.756080,2.302038]}"));
|
||||
|
||||
// You can use a Flash String as a key to get a member from JsonDocument
|
||||
// No duplication is done.
|
||||
long time = doc[F("time")];
|
||||
|
||||
// You can use a Flash String as a key to set a member of a JsonDocument
|
||||
// WARNING: the content of the Flash String will be duplicated in the
|
||||
// JsonDocument.
|
||||
doc[F("time")] = time;
|
||||
|
||||
// You can set a Flash String as the content of a JsonVariant
|
||||
// WARNING: the content of the Flash String will be duplicated in the
|
||||
// JsonDocument.
|
||||
doc["sensor"] = F("gps");
|
||||
|
||||
// It works with serialized() too:
|
||||
doc["sensor"] = serialized(F("\"gps\""));
|
||||
doc["sensor"] = serialized(F("\xA3gps"), 3);
|
||||
|
||||
// You can compare the content of a JsonVariant to a Flash String
|
||||
if (doc["sensor"] == F("gps")) {
|
||||
// ...
|
||||
}
|
||||
}
|
||||
|
||||
void loop() {
|
||||
// not used in this example
|
||||
}
|
||||
|
||||
// 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 memory
|
||||
// problem.
|
||||
//
|
||||
// The book "Mastering ArduinoJson" contains a quick C++ course that explains
|
||||
// how your microcontroller stores strings in memory. It also tells why you
|
||||
// should not abuse Flash strings with ArduinoJson.
|
||||
// Learn more at https://arduinojson.org/book/
|
||||
// Use the coupon code TWENTY for a 20% discount ❤❤❤❤❤
|
||||
@ -0,0 +1,77 @@
|
||||
// ArduinoJson - https://arduinojson.org
|
||||
// Copyright © 2014-2023, Benoit BLANCHON
|
||||
// MIT License
|
||||
//
|
||||
// This example shows the different ways you can use String with ArduinoJson.
|
||||
//
|
||||
// Use String objects sparingly, because ArduinoJson duplicates them in the
|
||||
// JsonDocument. Prefer plain old char[], as they are more efficient in term of
|
||||
// code size, speed, and memory usage.
|
||||
//
|
||||
// https://arduinojson.org/v6/example/string/
|
||||
|
||||
#include <ArduinoJson.h>
|
||||
|
||||
void setup() {
|
||||
DynamicJsonDocument doc(1024);
|
||||
|
||||
// You can use a String as your JSON input.
|
||||
// WARNING: the string in the input will be duplicated in the JsonDocument.
|
||||
String input =
|
||||
"{\"sensor\":\"gps\",\"time\":1351824120,\"data\":[48.756080,2.302038]}";
|
||||
deserializeJson(doc, input);
|
||||
|
||||
// You can use a String as a key to get a member from JsonDocument
|
||||
// No duplication is done.
|
||||
long time = doc[String("time")];
|
||||
|
||||
// You can use a String as a key to set a member of a JsonDocument
|
||||
// WARNING: the content of the String will be duplicated in the JsonDocument.
|
||||
doc[String("time")] = time;
|
||||
|
||||
// You can get the content of a JsonVariant as a String
|
||||
// No duplication is done, at least not in the JsonDocument.
|
||||
String sensor = doc["sensor"];
|
||||
|
||||
// Unfortunately, the following doesn't work (issue #118):
|
||||
// sensor = doc["sensor"]; // <- error "ambiguous overload for 'operator='"
|
||||
// As a workaround, you need to replace by:
|
||||
sensor = doc["sensor"].as<String>();
|
||||
|
||||
// You can set a String as the content of a JsonVariant
|
||||
// WARNING: the content of the String will be duplicated in the JsonDocument.
|
||||
doc["sensor"] = sensor;
|
||||
|
||||
// It works with serialized() too:
|
||||
doc["sensor"] = serialized(sensor);
|
||||
|
||||
// You can also concatenate strings
|
||||
// WARNING: the content of the String will be duplicated in the JsonDocument.
|
||||
doc[String("sen") + "sor"] = String("gp") + "s";
|
||||
|
||||
// You can compare the content of a JsonObject with a String
|
||||
if (doc["sensor"] == sensor) {
|
||||
// ...
|
||||
}
|
||||
|
||||
// Lastly, you can print the resulting JSON to a String
|
||||
// WARNING: it doesn't replace the content but appends to it
|
||||
String output;
|
||||
serializeJson(doc, output);
|
||||
}
|
||||
|
||||
void loop() {
|
||||
// not used in this example
|
||||
}
|
||||
|
||||
// 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 problem.
|
||||
//
|
||||
// The book "Mastering ArduinoJson" contains a quick C++ course that explains
|
||||
// how your microcontroller stores strings in memory. On several occasions, it
|
||||
// shows how you can avoid String in your program.
|
||||
// Learn more at https://arduinojson.org/book/
|
||||
// Use the coupon code TWENTY for a 20% discount ❤❤❤❤❤
|
||||
Reference in New Issue
Block a user