I'm trying to use a SIM800L and Ethernet shield in one program. Separately they work perfectly, but they do not work together.
When I put the following code in the Setup method, the SIM800L can't receive an SMS.
Ethernet.begin(mac, ip, gateway, subnet);
server.begin();
There is a SIM800L example to receive SMS that works perfectly:
#include <SoftwareSerial.h>
SoftwareSerial sim800(10,11); // (Rx,Tx > Tx,Rx)
char incomingByte;
String sms;
//define relay pins
int relay_1 = 8;
void setup()
{
//Initial state of the relay
pinMode(relay_1, OUTPUT);
digitalWrite(relay_1, HIGH);
Serial.begin(9600);
sim800.begin(9600);
while(!sim800.available()){
sim800.println("AT");
delay(1000);
Serial.println("Connecting...");
}
Serial.println("Connected!");
sim800.println("AT+CMGF=1"); //Set SMS to Text Mode
delay(1000);
sim800.println("AT+CNMI=1,2,0,0,0"); //Procedure to handle newly arrived
messages(command name in text: new message indications to TE)
}
void loop()
{
if(sim800.available()){
delay(100);
// Serial Buffer
while(sim800.available()){
incomingByte = sim800.read();
sms += incomingByte;
}
delay(10);
Serial.println(sms);
sms.toUpperCase(); // Uppercase the Received Message
//turn RELAY_1 ON or OFF
if (sms.indexOf("RELAY1 OFF") > -1){
digitalWrite(relay_1, HIGH);
}
if (sms.indexOf("RELAY1 ON") > -1){
digitalWrite(relay_1, LOW);
}
delay(1000);}
//clear sms
sms = "";
}
There is an Ethernet shield web server example that also works:
#include <SPI.h>
#include <Ethernet.h>
int relay_1 = 8;
int pos = 0;
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //physical mac address
byte ip[] = { 192, 168, 1, 178 }; // ip in lan (that's what you
need to use in your browser. ("192.168.1.178")
byte gateway[] = { 192, 168, 1, 1 }; // internet access via router
byte subnet[] = { 255, 255, 255, 0 }; //subnet mask
EthernetServer server(80); //server port
String readString;
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
pinMode(relay_1 , OUTPUT);
digitalWrite(relay_1 , LOW);
// start the Ethernet connection and the server:
Ethernet.begin(mac, ip, gateway, subnet);
server.begin();
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
}
void loop() {
// Create a client connection
EthernetClient client = server.available();
if (client) {
while (client.connected()) {
if (client.available()) {
char c = client.read();
//read char by char HTTP request
if (readString.length() < 100) {
//store characters to string
readString += c;
//Serial.print(c);
}
//if HTTP request has ended
if (c == '\n') {
Serial.println(readString); //print to serial monitor for debuging
client.println("HTTP/1.1 200 OK"); //send new page
client.println("Content-Type: text/html");
client.println();
client.println("<HTML>");
client.println("<HEAD>");
client.println("<meta name='apple-mobile-web-app-capable' content='yes' />");
client.println("<meta name='apple-mobile-web-app-status-bar-style'
content='black-translucent' />");
client.println("<TITLE>ethernet shield server</TITLE>");
client.println("</HEAD>");
client.println("<BODY>");
client.println("<H1>Ethernet project Project</H1>");
client.println("<hr />");
client.println("<br />");
client.println("<H2>Arduino with Ethernet Shield</H2>");
client.println("<br />");
client.println("<a href=\"/?relay1on\"\">Turn On LED</a>");
client.println("<a href=\"/?relay1off\"\">Turn Off LED</a><br />");
client.println("</BODY>");
client.println("</HTML>");
delay(1);
//stopping client
client.stop();
//controls the Arduino if you press the buttons
if (readString.indexOf("?relay1on") >0){
digitalWrite(led, HIGH);
}
if (readString.indexOf("?relay1off") >0){
digitalWrite(led, LOW);
}
//clearing string for next read
readString="";
}
}
}
}
}
How can I combine them in one functioning program?
