I’m building a POE temperature logger (reads I2C devices, and calls a URL to record the values on a SQL server. Long story short, while the DFR0850 can read the I2C devices, the ethernet fails to detect, and thus doesn’t work. Switch is a Ubiquiti Pro 48 port POE switch so power is fine, I’ve also tried the Wiki code on the DFRobot website for the shield as well, and no luck with it either. My switch doesn’t even see the MAC address of the unit. I’ve verified the cable using a cable tester and all the pins are perfect.
Code as follows, I’ve been playing with the various reset pins and no combination of pins 4 or 11 make a difference either. Nothing I do seems to work, the I2C is good, but the ethernet … not so much. I’ve included plenty of watchdog code to catch when it crashes, fails, etc, and it gets stuck on the loop
Ethernet shield was not found.
Connection Failed Link State ... Reset
Ethernet shield was not found.
Connection Failed Link State ... Reset
Ethernet shield was not found.
Connection Failed Link State ... Reset
#include <SPI.h>
#include <Ethernet.h>
#include <Adafruit_MCP9808.h>
#include <avr/wdt.h>
// Buttons
#define SS 10U //W5500 CS
#define RST 11U //W5500 RST
// Web Loop
unsigned long previousMillis = 0UL;
unsigned long interval = 30000UL;
// Watchdog Loop
unsigned long WDpreviousMillis = 0UL;
unsigned long WDinterval = 500UL;
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
0xDE, 0xAD, 0x00, 0xC0, 0xFF, 0xEE
};
IPAddress ip(10, 0, 0, 8);
IPAddress subnet(255, 255, 255, 0);
IPAddress gateway(10, 0, 0, 1);
IPAddress dnsServer(10, 0, 0, 10);
// Initialize the Ethernet library
EthernetClient client;
// Temp Sensor
Adafruit_MCP9808 i2ctemp1 = Adafruit_MCP9808();
Adafruit_MCP9808 i2ctemp2 = Adafruit_MCP9808();
Adafruit_MCP9808 i2ctemp3 = Adafruit_MCP9808();
void setup() {
Serial.begin(9600);
while (!Serial) {
;
}
// Make the reset work
pinMode(RST,OUTPUT);
digitalWrite(RST,HIGH);
// Setup the static IP
// Ethernet.init(53);
Ethernet.begin(mac, ip, dnsServer, gateway, subnet);
// Reset Pin
digitalWrite(RST, HIGH);
// Setup temp sensor 1
if (!i2ctemp1.begin(0x18)) {
Serial.println("Couldn't find MCP9808! Module 1 Check your connections and verify the address is correct.");
while (1);
}
i2ctemp1.setResolution(3);
// Setup temp sensor 2
if (!i2ctemp2.begin(0x19)) {
Serial.println("Couldn't find MCP9808! Module 2 Check your connections and verify the address is correct.");
while (1);
}
i2ctemp2.setResolution(3);
// Setup temp sensor 3
if (!i2ctemp3.begin(0x1A)) {
Serial.println("Couldn't find MCP9808! Module 3 Check your connections and verify the address is correct.");
while (1);
}
i2ctemp3.setResolution(3);
// Start the Watchdog
wdt_enable(WDTO_2S);
// Disable PIN 4 & Init W5500
//pinMode(4,OUTPUT);
//digitalWrite(4,HIGH);
//digitalWrite(RST,HIGH);
//digitalWrite(SS, HIGH);
//delay(200);
//digitalWrite(RST,LOW);
//digitalWrite(SS, LOW);
//delay(200);
//digitalWrite(RST,HIGH);
//digitalWrite(SS, HIGH);
delay(200);
if (Ethernet.hardwareStatus() == EthernetNoHardware) {
Serial.println("Ethernet shield was not found.");
}
else if (Ethernet.hardwareStatus() == EthernetW5100) {
Serial.println("W5100 Ethernet controller detected.");
}
else if (Ethernet.hardwareStatus() == EthernetW5200) {
Serial.println("W5200 Ethernet controller detected.");
}
else if (Ethernet.hardwareStatus() == EthernetW5500) {
Serial.println("W5500 Ethernet controller detected.");
}
}
void loop() {
// Firing trigger setup
unsigned long currentMillis = millis();
unsigned long WDcurrentMillis = millis();
// Watchdog Reset Every 500ms
if(WDcurrentMillis - WDpreviousMillis > WDinterval) {
WDpreviousMillis = WDcurrentMillis;
wdt_reset();
}
// Connect To Webserver Loop
if(currentMillis - previousMillis > interval) {
previousMillis = currentMillis;
if(Ethernet.linkStatus() == LinkON) {
int HTTP_PORT = 80;
char HOST_NAME[] = "10.0.0.10";
if (client.connect(HOST_NAME, HTTP_PORT)) {
// We connected, now close it quick.
client.stop();
// Temp Sensor 1 Code
i2ctemp1.wake();
delay(150);
float c1 = i2ctemp1.readTempC();
i2ctemp1.shutdown_wake(1);
// Temp Sensor 2 Code
i2ctemp2.wake();
delay(150);
float c2 = i2ctemp2.readTempC();
i2ctemp2.shutdown_wake(1);
// Temp Sensor 3 Code
i2ctemp3.wake();
delay(150);
float c3 = i2ctemp3.readTempC();
i2ctemp3.shutdown_wake(1);
String HTTP_METHOD = "GET"; // or "POST"
String PATH_NAME1;
PATH_NAME1 += "/sensor/index.php?id=0x18&var=";
PATH_NAME1 += String(c1);
String PATH_NAME2;
PATH_NAME2 += "/sensor/index.php?id=0x19&var=";
PATH_NAME2 += String(c2);
String PATH_NAME3;
PATH_NAME3 += "/sensor/index.php?id=0x1A&var=";
PATH_NAME3 += String(c3);
// make a HTTP request:
// send HTTP header
client.connect(HOST_NAME, HTTP_PORT);
client.setConnectionTimeout(100);
client.println(HTTP_METHOD + " " + PATH_NAME1 + " HTTP/1.1");
client.println("Host: " + String(HOST_NAME));
client.println("Connection: close");
client.println(); // end HTTP header
client.stop();
client.connect(HOST_NAME, HTTP_PORT);
client.setConnectionTimeout(100);
client.println(HTTP_METHOD + " " + PATH_NAME2 + " HTTP/1.1");
client.println("Host: " + String(HOST_NAME));
client.println("Connection: close");
client.println(); // end HTTP header
client.stop();
client.connect(HOST_NAME, HTTP_PORT);
client.setConnectionTimeout(100);
client.println(HTTP_METHOD + " " + PATH_NAME3 + " HTTP/1.1");
client.println("Host: " + String(HOST_NAME));
client.println("Connection: close");
client.println(); // end HTTP header
client.stop();
} else {// if not connected:
Serial.println("Connection Failed Host Connect ... Reset");
digitalWrite(RST, LOW);
delay(250);
digitalWrite(RST, HIGH);
delay(250);
setup();
loop();
}
} else {
Serial.println("Connection Failed Link State ... Reset");
digitalWrite(RST, LOW);
delay(250);
digitalWrite(RST, HIGH);
delay(250);
setup();
loop();
}
}
}
