AIF2 LTE example System events

Hi Albert,

I configure a bios  and route event 109 to irq 12, event 108 to irq 11 and event 107-102 with the event combiner to irq 10.
Similar to the LTE example source code.

now i see:

109 -> LTE radio frame (10ms)
108 -> LTE subframe (1ms)
107 -> LTE slot (0.5ms)
106 -> Not used
105 -> Not used
104 -> Not used
103 -> Not used
102 -> LTE radio frame (10ms)

When all events are triggered from AIF2 AT, are there 8 counter for each event.

At the moment I'm looking for the reason, why event 102 have the same 10ms period like event 109.

I also want to know which case triggers the events 103 to 106 ?

Regards,
Matthias

I can't understand your question. AT has 8 external events and you can configure any event you want. if you only need 4 events, you can set four events and that's it. each event is broadcasted to all GEMs in the DSP and you can select which event is used for which GEM core. it is flexible.  

At the moment I'm looking for the reason, why event 102 have the same 10ms period like event 109. [AB] that's because you chose the same strobe option like "Radio frame" for 102 and 109 AT event.

Albert

Hi Albert,

now I understand and found it in the AIF2 LLD ;-)

I try to enable Event 4 for LTE symbol wise event generation.

The following is slot wise:

        aifObj.hAif2Setup->commonSetup->pAtEventSetup->AtRadEvent[4].EventSelect = CSL_AIF2_EVENT_4;
        aifObj.hAif2Setup->commonSetup->pAtEventSetup->AtRadEvent[4].EventOffset  = 66000; // <- change here
        aifObj.hAif2Setup->commonSetup->pAtEventSetup->AtRadEvent[4].EvtStrobeSel = CSL_AIF2_RADT_FRAME; // <- change here
        aifObj.hAif2Setup->commonSetup->pAtEventSetup->AtRadEvent[4].EventModulo     = 122880-1;// <- change here
        aifObj.hAif2Setup->commonSetup->pAtEventSetup->AtRadEvent[4].EventMaskLsb = 0xFFFFFFFF; // only for GSM so NA
        aifObj.hAif2Setup->commonSetup->pAtEventSetup->AtRadEvent[4].EventMaskMsb = 0xFFFFFFFF; // only for GSM so NA
        aifObj.hAif2Setup->commonSetup->pAtEventSetup->bEnableRadEvent[4] = TRUE; // Enable Event

I saw that the settings from http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/t/156841.aspx are already done in the AIF2 LLD 1.0.0.8.

Do you know what I have to change, to get LTE symbol wise events?

Which EventStrobe and/or EventModulo is the right for me, get a LTE OFDM symbol wise event for normal and extended cyclic prefix.

Thanks a lot
Matthias

        aifObj.hAif2Setup->commonSetup->pAtEventSetup->AtRadEvent[4].EvtStrobeSel = CSL_AIF2_RADT_FRAME; [albert] change to CSL_AIF2_RADT_SYMBOL
        and set   RadTimerTc.SymbolNum = 139; //set LTE Symbol TC to 139
   RadTimerTc.LutIndexNum = 6; //set LTE LutIndex TC to 6
   AtCommonSetup.AtTerminalCount.RadClockCountTc[0] = 22079;
   AtCommonSetup.AtTerminalCount.RadClockCountTc[1] = 21919;
   AtCommonSetup.AtTerminalCount.RadClockCountTc[2] = 21919;
   AtCommonSetup.AtTerminalCount.RadClockCountTc[3] = 21919;
   AtCommonSetup.AtTerminalCount.RadClockCountTc[4] = 21919;
   AtCommonSetup.AtTerminalCount.RadClockCountTc[5] = 21919;
   AtCommonSetup.AtTerminalCount.RadClockCountTc[6] = 21919;

for normal cyclic prefix LTE symbols, then you will get event every LTE symbol time.

Hope this could help

Albert

Hi Albert,

thanks for you help. We use CPRI here and i'm a little bit confused about you settings in the previous post.

At the moment the LLD configures:

   RadTimerTc.SymbolNum = 139; //set LTE Symbol TC to 139
   RadTimerTc.LutIndexNum = 6; //set LTE LutIndex TC to 6
   AtCommonSetup.AtTerminalCount.RadClockCountTc[0] = 17663;
   AtCommonSetup.AtTerminalCount.RadClockCountTc[1] = 17535;
   AtCommonSetup.AtTerminalCount.RadClockCountTc[2] = 17535;
   AtCommonSetup.AtTerminalCount.RadClockCountTc[3] = 17535;
   AtCommonSetup.AtTerminalCount.RadClockCountTc[4] = 17535;
   AtCommonSetup.AtTerminalCount.RadClockCountTc[5] = 17535;
   AtCommonSetup.AtTerminalCount.RadClockCountTc[6] = 17535;

I try this:

        aifObj.hAif2Setup->commonSetup->pAtEventSetup->AtRadEvent[4].EventSelect = CSL_AIF2_EVENT_4;
        aifObj.hAif2Setup->commonSetup->pAtEventSetup->AtRadEvent[4].EventOffset  = 0;
        aifObj.hAif2Setup->commonSetup->pAtEventSetup->AtRadEvent[4].EvtStrobeSel = CSL_AIF2_RADT_SYMBOL;
        aifObj.hAif2Setup->commonSetup->pAtEventSetup->AtRadEvent[4].EventModulo  = 0xFFFFFFFF; // every symbol
        aifObj.hAif2Setup->commonSetup->pAtEventSetup->AtRadEvent[4].EventMaskLsb = 0xFFFFFFFF; // only for GSM so NA
        aifObj.hAif2Setup->commonSetup->pAtEventSetup->AtRadEvent[4].EventMaskMsb = 0xFFFFFFFF; // only for GSM so NA
        aifObj.hAif2Setup->commonSetup->pAtEventSetup->bEnableRadEvent[4] = TRUE; // Enable Event

With event Modulo 0xFFFFFFFF and  CSL_AIF2_RADT_SYMBOL it works;-)

Best regards,
Matthias

great.

I gave you OBSAI example, so your value is correct

albert