I am developing GPRS HTTP send request code using a GSM/GPRS module. I found the following code via google:
/*************************************************************************
* SIM800 GPRS/HTTP Library
* Distributed under GPL v2.0
* Written by Stanley Huang <stanleyhuangyc@gmail.com>
* For more information, please visit http://arduinodev.com
*************************************************************************/
#include <Arduino.h>
// change this to the pin connect with SIM800 reset pin
#define SIM800_RESET_PIN 7
// change this to the serial UART which SIM800 is attached to
#define SIM_SERIAL Serial
// define DEBUG to one serial UART to enable debug information output
//#define DEBUG Serial
typedef enum {
HTTP_DISABLED = 0,
HTTP_READY,
HTTP_CONNECTING,
HTTP_READING,
HTTP_ERROR,
} HTTP_STATES;
typedef struct {
float lat;
float lon;
uint8_t year; /* year past 2000, e.g. 15 for 2015 */
uint8_t month;
uint8_t day;
uint8_t hour;
uint8_t minute;
uint8_t second;
} GSM_LOCATION;
class CGPRS_SIM800 {
public:
CGPRS_SIM800():httpState(HTTP_DISABLED) {}
// initialize the module
bool init();
// setup network
byte setup(const char* apn);
// get network operator name
bool getOperatorName();
// check for incoming SMS
bool checkSMS();
// get signal quality level (in dB)
int getSignalQuality();
// get GSM location and network time
bool getLocation(GSM_LOCATION* loc);
// initialize HTTP connection
bool httpInit();
// terminate HTTP connection
void httpUninit();
// connect to HTTP server
bool httpConnect(const char* url, const char* args = 0);
// check if HTTP connection is established
// return 0 for in progress, 1 for success, 2 for error
byte httpIsConnected();
// read data from HTTP connection
void httpRead();
// check if HTTP connection is established
// return 0 for in progress, -1 for error, bytes of http payload on success
int httpIsRead();
// send AT command and check for expected response
byte sendCommand(const char* cmd, unsigned int timeout = 2000, const char* expected = 0);
// send AT command and check for two possible responses
byte sendCommand(const char* cmd, const char* expected1, const char* expected2, unsigned int timeout = 2000);
// toggle low-power mode
bool sleep(bool enabled)
{
return sendCommand(enabled ? "AT+CFUN=0" : "AT+CFUN=1");
}
// check if there is available serial data
bool available()
{
return SIM_SERIAL.available();
}
char buffer[256];
byte httpState;
private:
byte checkbuffer(const char* expected1, const char* expected2 = 0, unsigned int timeout = 2000);
void purgeSerial();
byte m_bytesRecv;
uint32_t m_checkTimer;
};
The problem is I have no idea how to change or define Rx and Tx Pin. If I define SIM_SERIAL serial1 it's showing me error. I want to change it to pins 10 and 11.
Here is other code whenever I try to compile it shows me error on "serial1" online. above code is sim800.h file
here is program code of send data through http
"SIM800.h"
#define APN "connect"
#define con Serial
static const char* url = "http://arduinodev.com/datetime.php";
CGPRS_SIM800 gprs;
uint32_t count = 0;
uint32_t errors = 0;
void setup()
{
con.begin(9600);
while (!con);
con.println("SIM800 TEST");
for (;;) {
con.print("Resetting...");
while (!gprs.init()) {
con.write('.');
}
con.println("OK");
con.print("Setting up network...");
byte ret = gprs.setup(APN);
if (ret == 0)
break;
con.print("Error code:");
con.println(ret);
con.println(gprs.buffer);
}
con.println("OK");
delay(3000);
if (gprs.getOperatorName()) {
con.print("Operator:");
con.println(gprs.buffer);
}
int ret = gprs.getSignalQuality();
if (ret) {
con.print("Signal:");
con.print(ret);
con.println("dB");
}
for (;;) {
if (gprs.httpInit()) break;
con.println(gprs.buffer);
gprs.httpUninit();
delay(1000);
}
delay(3000);
}
void loop()
{
char mydata[16];
sprintf(mydata, "t=%lu", millis());
con.print("Requesting ");
con.print(url);
con.print('?');
con.println(mydata);
gprs.httpConnect(url, mydata);
count++;
while (gprs.httpIsConnected() == 0) {
// can do something here while waiting
con.write('.');
for (byte n = 0; n < 25 && !gprs.available(); n++) {
delay(10);
}
}
if (gprs.httpState == HTTP_ERROR) {
con.println("Connect error");
errors++;
delay(3000);
return;
}
con.println();
gprs.httpRead();
int ret;
while ((ret = gprs.httpIsRead()) == 0) {
// can do something here while waiting
}
if (gprs.httpState == HTTP_ERROR) {
con.println("Read error");
errors++;
delay(3000);
return;
}
// now we have received payload
con.print("[Payload]");
con.println(gprs.buffer);
// show position
GSM_LOCATION loc;
if (gprs.getLocation(&loc)) {
con.print("LAT:");
con.print(loc.lat, 6);
con.print(" LON:");
con.print(loc.lon, 6);
con.print(" TIME:");
con.print(loc.hour);
con.print(':');
con.print(loc.minute);
con.print(':');
con.println(loc.second);
}
// show stats
con.print("Total Requests:");
con.print(count);
if (errors) {
con.print(" Errors:");
con.print(errors);
}
con.println();
}
i already know how to send data through http using AT command and software serial library here is my code
#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11); // RX, TX
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.println("Goodnight moon!");
// set the data rate for the SoftwareSerial port
mySerial.begin(9600);
mySerial.write("AT\n");
delay(1000);
mySerial.write("AT+CSQ\n");
delay(1000);
mySerial.write("AT+SAPBR=3,1,\"APN\",\"internet\"\n");
delay(2000);
mySerial.write("\nAT+SAPBR=1,1\n");
delay(1000);
mySerial.write("AT+HTTPINIT\n");
delay(1000);
}
void loop() { // run over and over
if (mySerial.available()) {
Serial.write(mySerial.read());
delay(1000)
serial.print(enter key)
}
if (Serial.available()) {
delay(2000);
mySerial.write("AT+HTTPPARA=\"URL\",\"http://www.mydomain.in/index.php?dt=testdata\"\n");
delay(2000);
mySerial.write("AT+HTTPACTION=0\n");
delay(2000);
mySerial.write("\n");
mySerial.write(Serial.read());
}
In this code I define Rx Tx (UART)pin. Can you please suggest me any idea how can i define RX Tx pin in sim800.h file. because serial1 give me error on compiling time
