title: For the S2-LP, what is the frequency format for the function SIGFOX_API_start_continuous_transmission(frequency, mode)
body: <p>Sigfox_CLI_Demo_Project allows a continuous wave mode transmission for test and there is a CLI command start_continuous_transmission in the command table. However, I don't know how to input the frequency. </p>
  
  <p>I have tried to put frequency = 920800000 for 920.8Mhz but get an error 0x0058.  I also tried "RC4" but also get the same err code. </p>
  
  <pre><code>    { "start_continuous_transmission",SIGFOX_API_start_continuous_transmission_Action, "wu", ""}, \
  
      void SIGFOX_API_start_continuous_transmission_Action(void)
      {
        sfx_u32 frequency=(uint32_t)920800000;//(uint32_t)unsignedCommandArgument(0);
  
      sfx_modulation_type_t mode=(sfx_modulation_type_t)0;//unsignedCommandArgument(1);
  
      sfx_error_t err;
  
        err=SIGFOX_API_start_continuous_transmission(frequency, mode);
  
        responsePrintf("{&amp;N API call...&amp;tx}\r\n",
           "SIGFOX_API_start_continuous_transmission", "sfx_error", err);
      }
  </code></pre>
  
  <p>I get an err 0x0058.</p>
  
  <p>Please help. Thank you !!!! </p>