Thingy91: Changing the Network Mode during runtime

RE: Thingy91: Changing the Network Mode during runtime

Bergmann — Fri, 03 Jan 2020 12:12:41 GMT

Ok, i found the solution by myself:

#include <zephyr.h>
#include <stdio.h>
#include <uart.h>
#include <string.h>
#include <net/socket.h>
static int at_command_socket;
int bytes_sent, bytes_read;
static u8_t at_command1[256] = "AT+CFUN=4\r\n";
static u8_t at_command2[256] = "AT+CFUN=1\r\n";
static u8_t at_command3[256] = "AT%XSYSTEMMODE=0,1,0,0\r\n";
static u8_t at_command4[256] = "AT%XSYSTEMMODE=0,0,1,0\r\n";
static u8_t at_command5[256] = "AT%XSYSTEMMODE?\r\n";
static char result[256];

void ATCFUN4(){
      bytes_sent = send(at_command_socket, at_command1, strlen(at_command1), 0);
      bytes_read = recv(at_command_socket, result, sizeof(result), 0);
}
void ATCFUN1(){      
      bytes_sent = send(at_command_socket, at_command2, strlen(at_command2), 0);
      bytes_read = recv(at_command_socket, result, sizeof(result), 0);
}

void NBIoT_Mode(){      
      bytes_sent = send(at_command_socket, at_command3, strlen(at_command3), 0);
      bytes_read = recv(at_command_socket, result, sizeof(result), 0);
}


void GPS_Mode(){    
      bytes_sent = send(at_command_socket, at_command4, strlen(at_command4), 0);
      bytes_read = recv(at_command_socket, result, sizeof(result), 0);
}


void read_mode(){
      bytes_sent = send(at_command_socket, at_command5, strlen(at_command5), 0);
      bytes_read = recv(at_command_socket, result, sizeof(result), 0);
      printk("RECEIVED FROM recv(): %s\n", result);
}


void main(void)
{
  at_command_socket = socket(AF_LTE, 0, NPROTO_AT);
  while (1)
    {
      ATCFUN4();
      k_sleep(100);
      GPS_Mode();
      k_sleep(200);
      ATCFUN1();
      k_sleep(100);
      read_mode();
      k_sleep(100);
      ATCFUN4();
      k_sleep(100);
      NBIoT_Mode();
      k_sleep(200);
      ATCFUN1();
      k_sleep(100);
      read_mode();
      k_sleep(100);
  }
}

I only have to declarate the variables and the socket once at the beginning of the code. Now I works:

RE: Thingy91: Changing the Network Mode during runtime

MJD093 — Fri, 03 Jan 2020 12:11:21 GMT

One of the non-official examples might be more appealing to you.

https://github.com/Rallare/fw-nrfconnect-nrf/blob/nrf9160_samples/samples/nrf9160/simple_at/src/main.c

See the above non-official sample for an application that simply runs a list of at commands (defined in 'at_commands[]').

RE: Thingy91: Changing the Network Mode during runtime

Bergmann — Fri, 03 Jan 2020 10:48:49 GMT

Hi, I updated the modem FW to 1.1.0 and am in the master branch of NCS

If I try to do it manually in the LTE Monitor, I can change it with no problem:

Is there maybe another way to run AT commands during runtime? I tried to run the code from above again and then I saw that I get no OKs each time, I want to change the system mode:

I have done it with this code in the example above:

      static int at_command_socket;
      int bytes_sent, bytes_read;
      static u8_t at_command[256] = "AT+CFUN=4\r\n";
      static char result[256];
      at_command_socket = socket(AF_LTE, 0, NPROTO_AT);
      int bytes_to_send = strlen(at_command);
      bytes_sent = send(at_command_socket, at_command, bytes_to_send, 0);
      bytes_read = recv(at_command_socket, result, sizeof(result), 0);
      printk("RECEIVED FROM recv(): %s\n", result);

And I am not sure if this is the write way to do it for my case.
Do you maybe have another code example, that runs AT Commands during a program?

Thanks for your for your answers and your help!

RE: Thingy91: Changing the Network Mode during runtime

Øyvind — Fri, 03 Jan 2020 10:29:02 GMT

Hello,

I am able to run your code, but it does not change system mode. What version of NCS and modem FW are you running? Have you tried with the AT Client, to verify that it can change state?

Kind regards,
Øyvind