RTOS/CC1310: Changing Frequency On-the-Fly w?EasyLink API

Saycoda

Part Number: CC1310

Tool/software: TI-RTOS

1) How do I change frequency programmatically, or "on-the-fly". The code snippet below does not work, I get EasyLinl_Cmd_errors. It attempts to alternate between 868Mhz and 900Mhz

2) Also, how do you cleanly paste code from CCS to this forum?

if(chng_freq)

{
el_status = EasyLink_init(EasyLink_Phy_50kbps2gfsk);

if(el_status != EasyLink_Status_Success) {
EasyLink_abort();
}

/* Set frequency */
el_status = EasyLink_setFrequency(900000000);

if(el_status != EasyLink_Status_Success) {
EasyLink_abort();
}

}

else
{
el_status = EasyLink_init(EasyLink_Phy_50kbps2gfsk);
if(el_status != EasyLink_Status_Success) {
EasyLink_abort();
}

/* Set frequency */
el_status = EasyLink_setFrequency(868000000);
if(el_status != EasyLink_Status_Success) {
EasyLink_abort();
}
}
chng_freq = !chng_freq;

over 8 years ago

0 PrashanthS over 8 years ago

TI__Expert 8765 points

Frank,

Typically to change the frequency, one can Cancel the RF rx/tx command and then call the RF cmdFs with the new frequency.

Since you are using the Easylink api, can you try as below

if(chng_freq)

{
    if(EasyLink_abort() == EasyLink_Status_Success) {
             el_status = EasyLink_init(EasyLink_Phy_50kbps2gfsk);

             /* Set frequency */
             EasyLink_setFrequency(900000000);

     }

}

0 PrashanthS over 8 years ago in reply to PrashanthS

TI__Expert 8765 points

On the second question, you can enable the Rich text format and click on the Syntaxhighlighter icon that looks a bit like this [</>].

0 PrashanthS over 8 years ago in reply to PrashanthS

TI__Expert 8765 points

Frank,

I tried the below code. All I did was take the example easylink Tx code and add these lines at the beginning of the while loop. And it worked with no issues.

        if (fpingpong) {
            EasyLink_setFrequency(866000000);
        }

        else {
            EasyLink_setFrequency(870000000);
        }
         fpingpong = !fpingpong;

Sub-1 GHz

Sub-1 GHz forum

RTOS/CC1310: Changing Frequency On-the-Fly w?EasyLink API