SIM5320

[MattLeMasurier]

Thank you for your work on this so far. Can't wait to get my projects working over cellular networks!

If you had time to implement the SIM5320 I know a lot of people would appreciate it - Adafruit haven't yet completed a library for this module in their FONA 3G break-out.

[vshymanskyy]

I need someone to donate a SIM5320 device to work on that :)

[GeorgianBorca]

I could donate you one but you'll need to make a PCB for it :) I also have an SIM7100E (LTE) module. Let me know if i can help.

[vshymanskyy]

unfortunately no time for PCB etching, but thanks anyway ;)

[GeorgianBorca]

The SIM5320 hase an MQTT built in. Dose anybody have a module to test the AT commands? http://www.microchip.ua/simcom/WCDMA/APPNOTES/SIMCom_3G_MQTT_Application%20Note_V1.00.pdf

[FabianInostroza]

@GeorgianBorca I have a lot of SIM5320A modules with firmware version 1575B13SIM5320A and they don't support those commands. According to one of the authorized sellers that is the latest firmware version.

[GeorgianBorca]

@FabianInostroza Thank you. Mabe there is some other version of the firmware with MQTT in it. Like with SIM800H some firmware has bluetooth support some don't.

[vshymanskyy]

Closed due to lack of interest

[addingama]

Really need this @vshymanskyy ,

If I want to add feature for sim5320E, could you please give me clue what should I modify? I need this to work with MQTT PubSubClient

[kamrulroky]

This would be very helpful if this library includes SIM5320E as a supported device , with sim800l mqtt works fine but there is some reconnecting issue . A 3G module would work better I think.

[vshymanskyy]

@dashracer you need to read the AT command spec and modify the library to send and handle correct AT commands for each operation. @kamrulroky PR's are welcome ;)

[SRGDamia1]

Just FYI, Digi International has a 3G (3G HSPA/GSM with 2G fall-back) XBee that's carrier certified for AT&T in the US: https://www.digi.com/products/xbee-rf-solutions/embedded-cellular-modems/digi-xbee-cellular-3g. It retails for $89, which is only $10 more than the Adafruit Fona 3G. It should work just find with the "XBee" module that already is in this library. The cellular chip inside is a u-blox 201, so if you would rather use "bypass mode" and interact directly with the cellular chip instead of using the XBee command interface, you also have that option.

I haven't tried MQTT on my board, but if you can use TinyGSM with a SIM800 to get to MQTT, you should also be able to use the 3G XBee for it.

[SRGDamia1]

As soon as they are available, I'm hoping to grab some of the Digi LTE CAT-M XBee's. I also picked up a NimbeLink LTE module based on the Telit LE910, but I have no idea when (if?) I'll ever have a chance to get it working for this library.

[jongips]

I'm also interested in support for the NimbeLink / Telit LTE 910 series modems. @vshymanskyy Any thoughts on how much effort it would be to port support? I'm considering diving in.

[SRGDamia1]

I haven't had any time to do anything with the NimbeLink / Telit LTE 910; it's in a box on my office floor. Porting over most of the functions is just a matter of selecting the equivalent AT commands. A lot of the commands to connect to the network and open sockets are fairly similar between modules. What I found to be the trickiest was figuring out how the module tells you when data/response has been received over a socket and transferring that data over to the Arduino "client." You have to re-write the "wait response" and read commands to deal with the format of the response and (for me at least) that took a bit of fiddling and testing.

[hubaksis]

@SRGDamia1 Can you please share your code for SIM5320? I am using CHTTPS[action] to send data to server, however, I am struggling with closing connection after a request. AT+CHTTPSCLSE and AT+CHTTPSSTOP always return error unless the server closes the connection first. When the server closes connection CHTTPSSTOP returns OK and I can make another request.

[SRGDamia1]

I'm sorry, I don't have a SIM5320 or any code for it. The 3G module I've tested is the Digi 3G XBee.

[Najab]

bool gprsConnect(const char apn, const char user = NULL, const char* pwd = NULL) { gprsDisconnect();

// Set the Bearer for the IP
sendAT(GF("+SAPBR=3,1,\"Contype\",\"GPRS\""));  // Set the connection type to GPRS
waitResponse();

sendAT(GF("+SAPBR=3,1,\"APN\",\""), apn, '"');  // Set the APN
waitResponse();

if (user && strlen(user) > 0) {
  sendAT(GF("+SAPBR=3,1,\"USER\",\""), user, '"');  // Set the user name
  waitResponse();
}
if (pwd && strlen(pwd) > 0) {
  sendAT(GF("+SAPBR=3,1,\"PWD\",\""), pwd, '"');  // Set the password
  waitResponse();
}

// Define the PDP context
sendAT(GF("+CGDCONT=1,\"IP\",\""), apn, '"');
waitResponse();

// Activate the PDP context
sendAT(GF("+CGACT=1,1"));
waitResponse(60000L);

// Open the definied GPRS bearer context
sendAT(GF("+SAPBR=1,1"));
waitResponse(85000L);
// Query the GPRS bearer context status
sendAT(GF("+SAPBR=2,1"));
if (waitResponse(30000L) != 1)
  return false;

// Attach to GPRS
sendAT(GF("+CGATT=1"));
if (waitResponse(60000L) != 1)
  return false;

// TODO: wait AT+CGATT?

// Set to multi-IP
sendAT(GF("+CIPMUX=1"));
if (waitResponse() != 1) {
  return false;
}

// Put in "quick send" mode (thus no extra "Send OK")
sendAT(GF("+CIPQSEND=1"));
if (waitResponse() != 1) {
  return false;
}

// Set to get data manually
sendAT(GF("+CIPRXGET=1"));
if (waitResponse() != 1) {
  return false;
}

// Start Task and Set APN, USER NAME, PASSWORD
sendAT(GF("+CSTT=\""), apn, GF("\",\""), user, GF("\",\""), pwd, GF("\""));
if (waitResponse(60000L) != 1) {
  return false;
}

// Bring Up Wireless Connection with GPRS or CSD
sendAT(GF("+CIICR"));
if (waitResponse(60000L) != 1) {
  return false;
}

// Get Local IP Address, only assigned after connection
sendAT(GF("+CIFSR;E0"));
if (waitResponse(10000L) != 1) {
  return false;
}

// Configure Domain Name Server (DNS)
sendAT(GF("+CDNSCFG=\"8.8.8.8\",\"8.8.4.4\""));
if (waitResponse() != 1) {
  return false;
}

return true;

}

I just want the replace this function for SIM5320 but i tried something please check and correct it now my function is not working

bool gprsConnect(const char apn, const char user = NULL, const char* pwd = NULL) { //gprsDisconnect();

//// Set the Bearer for the IP
//sendAT(GF("+SAPBR=3,1,\"Contype\",\"GPRS\""));  // Set the connection type to GPRS
//waitResponse();

//sendAT(GF("+SAPBR=3,1,\"APN\",\""), apn, '"');  // Set the APN
//waitResponse();

//if (user && strlen(user) > 0) {
//  sendAT(GF("+SAPBR=3,1,\"USER\",\""), user, '"');  // Set the user name
//  waitResponse();
//}
//if (pwd && strlen(pwd) > 0) {
//  sendAT(GF("+SAPBR=3,1,\"PWD\",\""), pwd, '"');  // Set the password
//  waitResponse();
//}

sendAT(GF("+CGATT=1"));  // Set the connection type to GPRS
waitResponse();

sendAT(GF("+CGACT=1,1"));  // Set the connection type to GPRS
waitResponse();

//sendAT(GF("+CGATT=1"));  // Set the connection type to GPRS
//waitResponse();

// Define the PDP context
sendAT(GF("+CGDCONT=1,\"IP\",\""), apn, GF("\",\"0.0.0.0\""));
//sendAT(GF("+CGDCONT=1,\"IP\",\""+String(apn)+"\",\"0.0.0.0\""));
waitResponse();

// Activate the PDP context
sendAT(GF("+CGACT=1,1"));
waitResponse(60000L);

//// Open the definied GPRS bearer context
//sendAT(GF("+SAPBR=1,1"));
//waitResponse(85000L);
//// Query the GPRS bearer context status
//sendAT(GF("+SAPBR=2,1"));
//if (waitResponse(30000L) != 1)
//  return false;

sendAT(GF("+CGPADDR=1"));
if (waitResponse(30000L) != 1)
    return false;

// Attach to GPRS
sendAT(GF("+CGATT=1"));
if (waitResponse(60000L) != 1)
  return false;

// TODO: wait AT+CGATT?

//// Set to multi-IP
//sendAT(GF("+CIPMUX=1"));
//if (waitResponse() != 1) {
//  return false;
//}

//// Put in "quick send" mode (thus no extra "Send OK")
//sendAT(GF("+CIPQSEND=1"));
//if (waitResponse() != 1) {
//  return false;
//}

//// Set to get data manually
//sendAT(GF("+CIPRXGET=1"));
//if (waitResponse() != 1) {
//  return false;
//}

//// Start Task and Set APN, USER NAME, PASSWORD
//sendAT(GF("+CSTT=\""), apn, GF("\",\""), user, GF("\",\""), pwd, GF("\""));
//if (waitResponse(60000L) != 1) {
//  return false;
//}

//// Bring Up Wireless Connection with GPRS or CSD
//sendAT(GF("+CIICR"));
//if (waitResponse(60000L) != 1) {
//  return false;
//}

//// Get Local IP Address, only assigned after connection
//sendAT(GF("+CIFSR;E0"));
//if (waitResponse(10000L) != 1) {
//  return false;
//}

//// Configure Domain Name Server (DNS)
//sendAT(GF("+CDNSCFG=\"8.8.8.8\",\"8.8.4.4\""));
//if (waitResponse() != 1) {
//  return false;
//}

return true;

}