爲什麼以太網盾不連接到服務器？

Question

我想用arduino uno，以太網盾和hc-sr06傳感器連接服務器。它連接到服務器而不使用傳感器代碼，但是當我添加傳感器代碼時，它沒有連接。

這裏是沒有傳感器代碼的代碼;我看到「在loop2」登錄串口。

#include <Ethernet.h> 
#include <SPI.h> 

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; 
EthernetClient client; 

void setup() { 
    Serial.begin(9600); 

    if (Ethernet.begin(mac) == 0) { 
    Serial.println("Failed to configure Ethernet using DHCP"); 
    } 

    delay(10000); // GIVE THE SENSOR SOME TIME TO START 

} 

void loop(){ 
    Serial.println("In loop"); 

    if (client.connect("www.xxxxx.com",80)) { 
    Serial.println("In loop2"); 
    client.println("POST /update_data2.php HTTP/1.1"); 
    client.println("Host: www.xxxxx.com"); // SERVER ADDRESS HERE TOO 
    client.println("Content-Type: application/x-www-form-urlencoded"); 
    client.print("Content-Length: "); 
    client.println(txData.length()); 
    client.println(); 
    client.print(txData); 
    } 

    if (client.connected()) { 
    client.stop(); 
    } 

    delay(30000); 
} 

下面是使用傳感器碼的碼;我沒有看到「在loop2中」登錄串口。

#include <Ethernet.h> 
#include <SPI.h> 

const int trigger_pin_1 = 12; 
const int echo_pin_1 = 13; 

const int trigger_pin_2 = 11; 
const int echo_pin_2 = 10; 

const int trigger_pin_3 = 9; 
const int echo_pin_3 = 8; 

const int led_1_r = 2; 
const int led_1_g = 3; 

const int led_2_r = 4; 
const int led_2_g = 5; 

const int led_3_r = 6; 
const int led_3_g = 7; 

int sure_1 ; 
int mesafe_1 ; 

int sure_2 ; 
int mesafe_2 ; 

int sure_3 ; 
int mesafe_3 ; 

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; 
EthernetClient client; 

String txData =""; 

void setup() { 

    Serial.begin(9600); 
    Serial.println("In setup"); 

    if (Ethernet.begin(mac) == 0) { 
    Serial.println("Failed to configure Ethernet using DHCP"); 
    } 

    delay(5000); 

    pinMode(led_1_r , OUTPUT); 
    pinMode(led_1_g , OUTPUT); 

    pinMode(led_2_r , OUTPUT); 
    pinMode(led_2_g , OUTPUT); 

    pinMode(led_3_r , OUTPUT); 
    pinMode(led_3_g , OUTPUT); 

    pinMode(trigger_pin_1 , OUTPUT); 
    pinMode(trigger_pin_2 , OUTPUT); 
    pinMode(trigger_pin_3 , OUTPUT); 

    pinMode(echo_pin_1 ,INPUT); 
    pinMode(echo_pin_2 ,INPUT); 
    pinMode(echo_pin_3 ,INPUT); 


    delay(3000); 
} 

void loop(){ 
    Serial.println("In loop"); 

    digitalWrite(trigger_pin_1 , HIGH); 
    digitalWrite(trigger_pin_2 , HIGH); 
    digitalWrite(trigger_pin_3 , HIGH); 

    delayMicroseconds(1000); 

    digitalWrite(trigger_pin_1 , LOW); 
    digitalWrite(trigger_pin_2 , LOW); 
    digitalWrite(trigger_pin_3 , LOW); 

    sure_1 = pulseIn(echo_pin_1 , HIGH); 
    mesafe_1 = (sure_1/2)/29.1; 

    sure_2 = pulseIn(echo_pin_2 , HIGH); 
    mesafe_2 = (sure_2/2)/29.1; 

    sure_3 = pulseIn(echo_pin_3 , HIGH); 
    mesafe_3 = (sure_3/2)/29.1; 

    delay(100); 

    Serial.print("mesafe_1:"); 
    Serial.println(mesafe_1); 
    Serial.print("mesafe_2:"); 
    Serial.println(mesafe_2); 
    Serial.print("mesafe_3:"); 
    Serial.println(mesafe_3); 


    if (mesafe_1 <= 10) 
    { 
    digitalWrite(led_1_r , HIGH); 
    delay(100); 
    clienConnect(1,0); 
    }else{ 
    digitalWrite(led_1_g , HIGH); 
    delay(100); 
    clienConnect(1,1); 
    } 


    if (mesafe_2 <= 10) 
    { 
    digitalWrite(led_2_r , HIGH); 
    delay(100); 
    clienConnect(2,0); 
    }else{ 
    digitalWrite(led_2_g , HIGH); 
    delay(100); 
    clienConnect(2,1); 
    } 


    if (mesafe_3 <= 10) 
    { 
    digitalWrite(led_3_r , HIGH); 
    delay(100); 
    clienConnect(3,0); 
    }else{ 
    digitalWrite(led_3_g , HIGH); 
    delay(100); 
    clienConnect(3,1); 
    } 

    delay(100); 
} 

void clienConnect(int id, int valuex){ 
    Serial.println("In clienConnect"); 

    txData = "senid=" + (String)id + "&senvalue=" + (String)valuex; 

    Serial.print(" txData:"); 
    Serial.println(txData); 

    Serial.println("In clienConnect2"); 

    if (client.connect("www.xxxxx.com",80)) 
    { 
    Serial.println("In loop2"); 
    client.println("POST /update_data.php HTTP/1.1"); 
    client.println("Host: www.xxxxx.com"); 
    client.println("Content-Type: application/x-www-form-urlencoded"); 
    client.print("Content-Length: "); 
    client.println(txData.length()); 
    client.println(); 
    client.print(txData); 
    } 
    Serial.println("In loop3"); 

    if (client.connected()) { 
    Serial.println("In loop4"); 
    client.stop(); 
    Serial.println("In loop5"); 
    } 

    Serial.println("In loop6"); 
    delay(1000); 

    } 

當我添加傳感器代碼時，爲什麼不是客戶端連接到服務器？你能幫我解決這個問題嗎？非常感謝。

Answer 1

以太網屏蔽層連接到SPI引腳，這些引腳正好是Arduino Uno上的引腳11,12和13。引腳10也用於以太網屏蔽CS引腳。 （參考：https://www.arduino.cc/en/Reference/Ethernet）

在您的第二代碼：

const int trigger_pin_1 = 12; 
const int echo_pin_1 = 13; 

const int trigger_pin_2 = 11; 
const int echo_pin_2 = 10; 

您使用您的HC-SR06傳感器這些引腳。您需要爲這些傳感器使用不同的引腳。