当前，我的代码中的对讲命令无法正常工作。它曾经可以单独工作，但是当我将其与湿度，温度，心率和发送给thingspeak结合使用时，它就不再起作用了。当我删除void循环中的代码，留下gettalkback和void gettalkback 2时，代码就起作用了。我完全不知道为什么它不起作用。
#include "ThingSpeak.h"
#include <DHT.h>
#include <Ethernet.h>
#include <LiquidCrystal.h>
#define USE_ARDUINO_INTERRUPTS true // Set-up low-level interrupts for most acurate BPM math.
#include <PulseSensorPlayground.h> // Includes the PulseSensorPlayground Library.
LiquidCrystal lcd(10, 9, 5, 4, 3, 2); //numbers of interface pins
int sensorPin = A8;
float tempC;
#define redLED 8
#define TSLED 41
#define DHTPIN 6
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE);
#include <Wire.h>
byte mac[] = {0x90, 0xA2, 0xDA, 0x10, 0x40, 0x4F};
unsigned long myChannelNumber = ;
const char * myWriteAPIKey = "";
const String channelsAPIKey = "";
const String talkBackAPIKey = "";
const String talkBackID = "";
const String talkCommandID = "";
const unsigned int getTalkBackInterval = 10 * 1000;
const unsigned int updateChannelsInterval = 15 * 1000;
String talkBackCommand;
long lastConnectionTimeChannels = 0;
boolean lastConnectedChannels = false;
int failedCounterChannels = 0;
long lastConnectionTimeTalkBack = 0;
boolean lastConnectedTalkBack = false;
int failedCounterTalkBack = 0;
char charIn;
// Set the static IP address to use if the DHCP fails to assign
IPAddress ip(172, 17, 171, 199);
IPAddress myDns(172, 17, 171, 254);
float get_temperature(int pin)
{
float temperature = analogRead(pin); // Calculate the temperature based on the reading and send that value back
float voltage = temperature * 5.0;
voltage = voltage / 1024.0;
return ((voltage - 0.5) * 100);
}
// Variables
const int PulseWire = A5; // PulseSensor PURPLE WIRE connected to ANALOG PIN 0
const int blinkLED = 22; // The on-board Arduino LED, close to PIN 13.
int Threshold = 550; // Determine which Signal to "count as a beat" and which to ignore.
// Use the "Gettting Started Project" to fine-tune Threshold Value beyond default setting.
// Otherwise leave the default "550" value.
PulseSensorPlayground pulseSensor; // Creates an instance of the PulseSensorPlayground object called "pulseSensor"
EthernetClient client;
void setup()
{
lcd.begin(16, 2);
pinMode(redLED, OUTPUT);
pinMode(TSLED, OUTPUT);
dht.begin();
pulseSensor.analogInput(PulseWire);
pulseSensor.blinkOnPulse(blinkLED); //auto-magically blink Arduino's LED with heartbeat.
pulseSensor.setThreshold(Threshold);
pulseSensor.begin();
Ethernet.init(10); // Most Arduino Ethernet hardware
Serial.begin(9600); //Initialize serial
// start the Ethernet connection:
Serial.println("Initialize Ethernet with DHCP:");
if (Ethernet.begin(mac) == 0)
{
Serial.println("Failed to configure Ethernet using DHCP");
// Check for Ethernet hardware present
if (Ethernet.hardwareStatus() == EthernetNoHardware)
{
Serial.println("Ethernet shield was not found. Sorry, can't run without hardware. :(");
while (true)
{
delay(10); // do nothing, no point running without Ethernet hardware
}
}
if (Ethernet.linkStatus() == LinkOFF)
{
Serial.println("Ethernet cable is not connected.");
}
// try to congifure using IP address instead of DHCP:
Ethernet.begin(mac, ip, myDns);
}
else
{
Serial.print(" DHCP assigned IP ");
Serial.println(Ethernet.localIP());
}
// give the Ethernet shield a second to initialize:
delay(1000);
ThingSpeak.begin(client); // Initialize ThingSpeak
}
void loop()
{
getTalkBack();
void getTalkBack2();
float h = dht.readHumidity();
{
tempC = get_temperature(sensorPin);
}
if (tempC < 31)
{
lcd.setCursor(0, 0);
lcd.print(tempC);
lcd.print(" "); //print the temp
lcd.print((char)223); // to get ° symbol
lcd.print("C");
lcd.print(" ");
lcd.print(h);
lcd.print("%");
}
else if (tempC > 31)
{
lcd.setCursor(0, 0);
lcd.print(tempC);
lcd.print(" "); //print the temp
lcd.print((char)223); // to get ° symbol
lcd.print("C");
lcd.print(" ");
lcd.print(h);
lcd.print("%");
}
delay(20); // take a break
if (pulseSensor.sawStartOfBeat())
{
int myBPM = pulseSensor.getBeatsPerMinute();
lcd.setCursor(0, 1);
lcd.print("BPM: ");
lcd.print(myBPM);
}
delay(20); // considered best practice in a simple sketch.
// Write to ThingSpeak channel.
ThingSpeak.setField(1, tempC);
ThingSpeak.setField(2, h);
int x = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
if (x == 200)
{
Serial.println("Channel update successful.");
}
delay(750);
}
void getTalkBack()
{
String tsData;
tsData = talkBackID + "/commands/execute?api_key=" + talkBackAPIKey;
if ((!client.connected() && (millis() - lastConnectionTimeTalkBack > getTalkBackInterval)))
{
if (client.connect("api.thingspeak.com", 80))
{
client.println("GET /talkbacks/" + tsData + " HTTP/1.0");
client.println();
lastConnectionTimeTalkBack = millis();
if (client.connected())
{
Serial.println("---------------------------------------");
Serial.println("GET TalkBack command");
Serial.println();
Serial.println("Connecting to ThingSpeak");
Serial.println();
Serial.println();
Serial.println("Server response");
Serial.println();
failedCounterTalkBack = 0;
while (client.connected() && !client.available()) delay(2000); //waits for data
while (client.connected() || client.available())
{
charIn = client.read();
talkBackCommand += charIn;
Serial.print(charIn);
if (talkBackCommand.indexOf("LED_OFF", charIn) != 1) // Check if LED_OFF msg received
digitalWrite(TSLED, LOW); // LED OFF
}
if (talkBackCommand = talkBackCommand.substring(talkBackCommand.indexOf("_CMD_") + 5));
{
Serial.println();
Serial.println();
Serial.println("Disconnected");
}
}
else
{
failedCounterTalkBack++;
Serial.println("Connection to ThingSpeak failed (" + String(failedCounterTalkBack, DEC) + ")");
Serial.println();
lastConnectionTimeChannels = millis();
}
}
}
if (failedCounterTalkBack > 3 )
{
startEthernet();
}
tsData = talkBackID + "/commands/execute?api_key=" + talkBackAPIKey;
if ((!client.connected() && (millis() - lastConnectionTimeTalkBack > getTalkBackInterval)))
{
if (client.connect("api.thingspeak.com", 80))
{
client.println("GET /talkbacks/" + tsData + " HTTP/1.0");
client.println();
lastConnectionTimeTalkBack = millis();
if (client.connected())
{
Serial.println("---------------------------------------");
Serial.println("GET TalkBack command");
Serial.println();
Serial.println("Connecting to ThingSpeak");
Serial.println();
Serial.println();
Serial.println("Server response");
Serial.println();
failedCounterTalkBack = 0;
delay(1000);
while (client.connected() && !client.available()) delay(2000); //waits for data
while (client.connected() || client.available())
{
charIn = client.read();
talkBackCommand += charIn;
Serial.print(charIn);
if (talkBackCommand.indexOf("LED_ON", charIn) != 1) // Check if LED_OFF msg received
digitalWrite(TSLED, HIGH); // LED ON
}
if (talkBackCommand = talkBackCommand.substring(talkBackCommand.indexOf("_CMD_") + 5));
{
Serial.println();
Serial.println();
Serial.println("Disconnected");
Serial.println();
}
}
else
{
failedCounterTalkBack++;
Serial.println("Connection to ThingSpeak failed (" + String(failedCounterTalkBack, DEC) + ")");
Serial.println();
lastConnectionTimeChannels = millis();
}
}
}
if (failedCounterTalkBack > 3 )
{
startEthernet();
}
client.stop();
Serial.flush();
}
void startEthernet()
{
client.stop();
Serial.println();
Serial.println();
Serial.println("****************************************");
Serial.println("Connecting Arduino to network...");
delay(1000);
if (Ethernet.begin(mac) == 0)
{
Serial.println("DHCP Failed, reset Arduino to try again");
Serial.println("****************************************");
Serial.println();
}
else
{
Serial.println("Arduino connected to network using DHCP");
Serial.println("****************************************");
Serial.println();
}
delay(1000);
}