CCS/TMS320F28075: TMS320F28075

sagar yadav68

Tool/software: Code Composer Studio

Hi,

I am using TMS320f28075 controller. I am using ADCIN14 and ADCIN15 as adc chanel for voltage measurement,I have initalize the adc as foloows.

AdcaRegs.ADCSOC7CTL.bit.TRIGSEL = 5; // Trigger on ePWM1 SOCA/C
AdcaRegs.ADCSOC7CTL.bit.CHSEL = 14; // SOC7 will convert 14
AdcaRegs.ADCSOC7CTL.bit.ACQPS = TRACKPS; // Set sample window to ACQPS+1 SYSCLK periods
AdcaRegs.ADCINTSOCSEL1.bit.SOC0 = 0; // Interrupts will not trigger start of conversion

AdcaRegs.ADCSOC8CTL.bit.TRIGSEL = 5; // Trigger on ePWM1 SOCA/C
AdcaRegs.ADCSOC8CTL.bit.CHSEL = 15; // SOC8 will convert 15
AdcaRegs.ADCSOC8CTL.bit.ACQPS = TRACKPS; // Set sample window to ACQPS+1 SYSCLK periods
AdcaRegs.ADCINTSOCSEL1.bit.SOC0 = 0; // Interrupts will not trigger start of conversion

Is this correct?

I have applied 1.5V at adc input. But I did not get adc count for the same.

Thanks,

Sagar

over 8 years ago

0 Devin Cottier over 8 years ago

TI__Guru 60865 points

Hi Sagar,

I don't see anything wrong with the SW you posted.

Are Result7 and Result8 for ADCA getting populated with some non-zero value, or nothing at all?

Are you sure the ePWM event is occurring?

Does this work if you use a different channel on ADC-A? A different SOC?

0 Devin Cottier over 8 years ago in reply to Devin Cottier

TI__Guru 60865 points

Hi Sagar,

I haven't heard from you in awhile. I'll assume that you were able to resolve your issue. If not, feel free to reply to this thread or start a new one.

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CCS/TMS320F28075: TMS320F28075