Permanent scan on a gateway

[Aurele]

Hello,

I'm developing a gateway and i would like to use advertising packet on sensor side to transmit data but it suggests that my gateway will be in permanent scan. I know scanning is consuming a lot but can it be used in a permanent way. i will also handling standard connections. 

Can the permanent scan be an issue during the whole life of the device ?

Best regards,

Aurélien

[Jimmy@zone]

You can reschedule it 

zb_void_t join_finished(zb_uint8_t param)
{
    UNUSED_PARAMETER(param);
    LOG("Join finished\n", NULL);
    // restart join, if you do this 10 sec before it ends it will renew the time.
}


// Start.....
    LOG("Network permit_joining started %d\n", cmd->time);
    zb_nlme_permit_joining_request_t b;
    b.permit_duration = cmd->time; // Setting this to 0x00 disables join. 0x01-0xFE is valid values and reprecents s. 0xFF is used for som special join....
    ZB_SET_BUF_PARAM(ZB_BUF_FROM_REF(param), b, zb_nlme_permit_joining_request_t);
    zb_err_code = ZB_SCHEDULE_CALLBACK(zb_nlme_permit_joining_request, param);
    ZB_ERROR_CHECK(zb_err_code);

    ZB_SCHEDULE_ALARM_CANCEL(join_finished, ZB_ALARM_ALL_CB);
    zb_err_code = ZB_SCHEDULE_ALARM(join_finished, 0, ZB_TIME_ONE_SECOND * b.permit_duration);
    ZB_ERROR_CHECK(zb_err_code);

[Aurele]

what do you mean by "reschedule it" ?

I just want to know if permanent scan is a good approach when i want to use advertising packet to transmit data.

[Jimmy@zone]

What I know it always times out if you do not reset the timeout time e.g reset the permit_duration before it expires

[Aurele]

ok, thank you for the information. So i guess when i get a timeout and i need to restart the scan, there is a short period of time during which i can lose some advertising packets ...

[awneil]

IF you don't want a timeout, check the documentation to see if there is an option for 'No timeout' ...