CC3100: How can I initialize cc3100 using interrupts?

Bálint Garas

Part Number: CC3100
Other Parts Discussed in Thread: MSP430F5529

Hello everyone!

This is what I would like to achive:

After calling sl_Start, i dont want to wait and until it finishes initializing itself, because I would like to collect data from my sensors.

Is it possible to get an interrupt that tells me, that the cc3100 is finished with initializing and I can start working with it?

If so, could someone explain it to me?

Best Regards,

Bálint

over 6 years ago

0 Hnz over 6 years ago

Guru 39650 points

Hi Bálint,

You shroud try to use sl_Start() in callback mode. Please see www.ti.com/.../swru368 at chapter 3.1 ("Asynchronous").

Jan

0 Bálint Garas over 6 years ago in reply to Hnz

Intellectual 675 points

Dear Hnz,

Thank you for replying to my post.

The link you posted was very usefull ( i somehow skipped through that chapter). I tried to implement it in a simple test code, but i wasnt very successful. Could you please tell me where i went wrong? I included my test code below. I am using the msp430f5529 launchpad with the cc3100.

void InitCallBack(_u32  Status){
    CLI_Write("init done");
}

int main(int argc, char** argv){
    WDTCTL = WDTPW + WDTHOLD;
    initClk();

    CLI_Configure();    // tera term
    void (*fptr) (_u32)=InitCallBack;
    CLI_Write("WLAN AP MODE\n\r");

    sl_Start(NULL, NULL, fptr);// init CC3100



    sl_WlanSetMode(ROLE_AP);            // CC3100 to AP mode
    while(1){};
}

0 Jan D over 6 years ago in reply to Bálint Garas

Guru 78615 points

Hi,

I think you should have some "blocking" code between sl_Start() and sl_WlanSetMode(). Because sl_Start() in asynchronous mode should return immediately. That means in your case you call sl_WlanSetMode() in moment when CC3100 is not started yet.

Also is a good practice to read return codes from sl_ API to be sure that API was executes successfully.

Jan

0 Bálint Garas over 6 years ago in reply to Jan D

Intellectual 675 points

Dear Jan,

Thank you for replying.

If I dont use the callback mode and use this code:

    sl_Start(NULL, NULL, NULL);         // init CC3100
    sl_WlanSetMode(ROLE_AP);            // CC3100 to AP mode

or if i use the callback mode like this:

void InitCallBack(_u32  Status){
    CLI_Write("init done");
    sl_WlanSetMode(ROLE_AP);            // CC3100 to AP mode
}

int main(int argc, char** argv){
    WDTCTL = WDTPW + WDTHOLD;
    initClk();

    CLI_Configure();    // tera term
    void (*fptr) (_u32)=InitCallBack;
    CLI_Write("WLAN AP MODE\n\r");

    sl_Start(NULL, NULL, fptr);// init CC3100

    while(1){};
}

than i get the same result.

The sl_Start function's return value is SL_RET_CODE_OK, which is the expected value.

Tbh, i dont really understand the initialization of the cc3100.

0 Jan D over 6 years ago in reply to Bálint Garas

Guru 78615 points

Hi,

In asynchronous handler you cannot call sl_ API at CC3100 devices. I expect this will be same with init-callback as well.

Your code should look like:

int init_done = 0;


void InitCallBack(_u32  Status){
    CLI_Write("init done");
    init_done = 1;   
}

int main(int argc, char** argv){
    WDTCTL = WDTPW + WDTHOLD;
    initClk();

    CLI_Configure();
    void (*fptr) (_u32)=InitCallBack;
    CLI_Write("WLAN AP MODE\n\r");

    sl_Start(NULL, NULL, fptr);

    while(init_done == 0) {

       // your code till is init of CC3100 done...
 
   }

    sl_WlanSetMode(ROLE_AP);

    while(1){};
}

Jan

0 Bálint Garas over 6 years ago in reply to Jan D

Intellectual 675 points

Dear Jan,

I copied your code, but the InitCallBack function is not called, and i get stuck in the while.

This is the code i run:

int init_done = 0;


void InitCallBack(_u32  Status){
    CLI_Write("init done");
    init_done = 1;
}

int main(int argc, char** argv){
    WDTCTL = WDTPW + WDTHOLD;
    initClk();

    CLI_Configure();
    void (*fptr) (_u32)=InitCallBack;
    CLI_Write("WLAN AP MODE\n\r");

    sl_Start(NULL, NULL, fptr);

    while(init_done == 0) {  CLI_Write("-"); }    // your code till is init of CC3100 done...



    sl_WlanSetMode(ROLE_AP);
    

    while(1){};
}

0 Jan D over 6 years ago in reply to Bálint Garas

Guru 78615 points

Hi,

OK, try add _SlNonOsMainLoopTask(); into while() loop. This function serve asynchronous handlers in case of non-RTOS code is used.

Jan

0 Bálint Garas over 6 years ago in reply to Jan D

Intellectual 675 points

Thank you very much for your help, this resolved my issue.

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CC3100: How can I initialize cc3100 using interrupts?