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AURIX™ Forum Discussions

Baranidharan
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Hi Aurix Team , I am trying to trigger EVADC channels using GTM Tom Module, Already i did for single ADC channel conversion with TOM module Rising /Falling Edge trigger, Now i m trying to implement the same for 9 ADC channels in a Queue with Single Trigger from TOM module to Start the ADC conversion . To ensure the TOM Trigger based ADC queue conversion complete i am using one of the ADC channel Result priority interrupt to call the read EVADC function and toggle one led inside the function , But after the 9 TOM Trigger only my read EVADC function call is happening .. I want to do all the adc channel in a queue to do the conversion and update the result with one tom trigger ... can some one reply me in this regard.
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FD_aurix
Level 5
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Hi Baranidharan

I'm working on a similar configuration, please share your ADC setting so I can check where is the issue

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Baranidharan
Level 1
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Thank You for the Response , 

1 )  i m using Tom1_13 to trigger the Group 2 for testing purpose

st_Gtm->ADCTRIG[1].OUT0.B.SEL2 = 3;

 

2 )  under the init EVADC group function i m selecting  ADCTRIG [1]

adcGroupConfig.arbiter.requestSlotQueue0Enabled = TRUE;

adcGroupConfig.queueRequest[0].triggerConfig.gatingMode = IfxEvadc_GatingMode_always; 

adcGroupConfig.queueRequest[0].triggerConfig.triggerMode = IfxEvadc_TriggerMode_uponRisingEdge;
adcGroupConfig.queueRequest[0].triggerConfig.triggerSource = IfxEvadc_TriggerSource_9; // GTM - ADCTRIG [1]

3 ) Under the initEVADC Channel function i m adding 6 channels using      idx[0:5] in for loop and make one of the channel to trigg interrupt

adcChannelConfig[idx].channelId = (IfxEvadc_ChannelId)(g_grp2channels[idx]);
adcChannelConfig[idx].resultRegister = (IfxEvadc_ChannelResult)(g_grp2channels[idx]);
adcChannelConfig[0].channelPriority = 1;    
//adcChannelConfig[0].resultPriority = 1;
adcChannelConfig[0].channelServProvider =IfxSrc_Tos_cpu0;
adcChannelConfig[0].limitCheck = IfxEvadc_LimitCheck_always;

4 ) AdcIsrHandler function call the ReadEVADC 

IFX_INTERRUPT(AdcIsrHandler, 0, 1);

5 ) inside the ReadEVADC i m toggle one led .. and store the adc values in a varibale 

i m sharing the trigger pulse for your reference 

Green is LED toggle , Red is TOM output.adc_trig_chan6.PNG

 

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FD_aurix
Level 5
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Level 5

how do you set the EXTR bit when you set up the queue?

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Baranidharan
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we are calling this in EVADC init 

refill.JPG

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FD_aurix
Level 5
100 replies posted 5 solutions authored 10 likes given
Level 5

I think the problem is here. Try to set EXTR on only on the first element  of the queue.

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Baranidharan
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Thank you for the immediate response  issue solved , ..

 

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User90300
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Hello Baranidharan,

Coud you please Share the whole c code ?

I am trying to do the same but My Adcs are never triggered 😞

thanks in advance

regards

 

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FD_aurix
Level 5
100 replies posted 5 solutions authored 10 likes given
Level 5

No Problem... I'm just in these days doing more or less the same trigger config with a queue (but not using illd), if you want to share with me your config I'll be really glad to compare it with my setting!

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Baranidharan
Level 1
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GTM _ EVADC trigger _ Register Configuration For your reference ..