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dual sequence mode in DSP320F28335

srisairam gaarlapati
Prodigy 40 points

Hi,

I am operating the ADC in Following modes.

1.Continuous mode

2.Sequential Mode

3.Dual sequence Mode.

Then SEQ1 is working and SEQ2 is not working in continous mode, in start-stop mode it is working. Please tell me the reason.

  • 0
    Guru 192875 points

    Hi Sri,

    Try this out: works for me!

    AdcRegs.ADCMAXCONV.all = 0x0005;       // Setup 3 conv's on SEQ1
      AdcRegs.ADCCHSELSEQ1.bit.CONV00 = 0x0; // Setup ADCINA0 as 1st SEQ1 conv.			:  	PANEL VOLTAGE
      AdcRegs.ADCCHSELSEQ1.bit.CONV01 = 0x1; // Setup ADCINA1 as 2nd SEQ1 conv.			:  	CHARGING VOLTAGE
      AdcRegs.ADCCHSELSEQ1.bit.CONV02 = 0x2; // Setup ADCINA2 as 3rd SEQ1 conv.			:	BATTERY VOLTAGE
      AdcRegs.ADCCHSELSEQ1.bit.CONV03 = 0x3; // Setup ADCINA3 as 4th SEQ1 conv.			:	PANEL CURRENT
      AdcRegs.ADCCHSELSEQ2.bit.CONV04 = 0x4; // Setup ADCINA4 as 1st SEQ2 conv.			:	BATTERY CURRENT
      AdcRegs.ADCCHSELSEQ2.bit.CONV05 = 0x5; // Setup ADCINA5 as 2nd SEQ2 conv.			:	HEAT SINK TEMPARATURE
      AdcRegs.ADCCHSELSEQ2.bit.CONV06 = 0x6; // Setup ADCINA6 as 2nd SEQ2 conv.			:	BATTERY TEMPARATURE


     AdcRegs.ADCTRL2.bit.EPWM_SOCA_SEQ1 = 1;// Enable SOCA from ePWM to start SEQ1
     AdcRegs.ADCTRL2.bit.INT_ENA_SEQ1 = 1;  // Enable SEQ1 interrupt (every EOS)
     AdcRegs.ADCTRL2.bit.EPWM_SOCB_SEQ2 = 1;// Enable SOCB from ePWM to start SEQ2
     AdcRegs.ADCTRL2.bit.INT_ENA_SEQ2 = 1;  // Enable SEQ2 interrupt (every EOS)

    Regards,

    Gautam