CCS/TMS320F28379D: run time error

Hi Mishra,

To get better help with your debug issues, it is good to provide the following as it would help us understand what issues you are running into:

- What program are you loading? Is it one of the examples released as part of C2000Ware/ControlSUITE?

- What hardware are you using? Is it launchpad/control card or do you have your custom board design?

- Did you verify your setup?  Is the part getting the correct VREF and did you verify/measure voltages on VREFHI and A0?  Are supply voltages correct?

- If you wrote the code, did you verify the ADC setup to be correct (clocks, SOC settings, S+H, channel settings ... etc) 

Best regards,

Joseph

Thank you for your time.
The program is the temperature sensor ADC program, and i am using TMS320F28379D.
While building the program it shows an core distribution error, but still it runs with some value 90-100 as ADC.Result0. i am supplying a voltage 0f 3.3V from the board itself to the pin A0.
Please try to resolve it.
regards
D.Mishra

Hi Debashish,

Can you please explain what you meant by "core distribution error"?  In your response, you also indicated that the code is from tempsensor.  The temperature sensor code connects the temperature sensor internally to ADC channel A13 when bit TSNSCTL is enabled.  In the code that you modified, did you change the channel assignment of the particular SOC you are using to channel A0, instead of channel A13.  Can you also verify or measure the VREFHI voltage fed to ADC module A?

Best regards,

Joseph

Thanks Joseph,

I am facing the error that, " No source available for 0x3ff16a", while i try to run it.

I have connected pin A0 with voltage 3.3 board, please verify it as i am attaching

#include "F28x_Project.h" // Device Headerfile and Examples Include File

void ConfigureADC(void);
void ConfigureEPWM(void);
void SetupADCEpwm(Uint16 channel);
interrupt void adca1_isr(void);

//buffer for storing conversion results
#define RESULTS_BUFFER_SIZE 256
Uint16 AdcaResults[RESULTS_BUFFER_SIZE];
Uint16 resultsIndex;
volatile Uint16 bufferFull;

void main(void)
{
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the F2837xS_SysCtrl.c file.
InitSysCtrl();

// Step 2. Initialize GPIO:
// This example function is found in the F2837xS_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
InitGpio(); // Skipped for this example

// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts
DINT;

// Initialize the PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.
// This function is found in the F2837xS_PieCtrl.c file.
InitPieCtrl();

// Disable CPU interrupts and clear all CPU interrupt flags:
IER = 0x0000;
IFR = 0x0000;

// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the interrupt
// is not used in this example. This is useful for debug purposes.
// The shell ISR routines are found in F2837xS_DefaultIsr.c.
// This function is found in F2837xS_PieVect.c.
InitPieVectTable();

//Map ISR functions
EALLOW;
PieVectTable.ADCA1_INT = &adca1_isr; //function for ADCA interrupt 1
EDIS;

//Configure the ADC and power it up
ConfigureADC();

//Configure the ePWM
ConfigureEPWM();

//Setup the ADC for ePWM triggered conversions on channel 0
SetupADCEpwm(0);

//Enable global Interrupts and higher priority real-time debug events:
IER |= M_INT1; //Enable group 1 interrupts
EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM

//Initialize results buffer
for(resultsIndex = 0; resultsIndex < RESULTS_BUFFER_SIZE; resultsIndex++)
{
AdcaResults[resultsIndex] = 0;
}
resultsIndex = 0;
bufferFull = 0;

//enable PIE interrupt
PieCtrlRegs.PIEIER1.bit.INTx1 = 1;

//sync ePWM
EALLOW;
CpuSysRegs.PCLKCR0.bit.TBCLKSYNC = 1;

//take conversions indefinitely in loop
do
{
//start ePWM
EPwm1Regs.ETSEL.bit.SOCAEN = 1; //enable SOCA
EPwm1Regs.TBCTL.bit.CTRMODE = 0; //unfreeze, and enter up count mode

//wait while ePWM causes ADC conversions, which then cause interrupts,
//which fill the results buffer, eventually setting the bufferFull
//flag
while(!bufferFull);
bufferFull = 0; //clear the buffer full flag

//stop ePWM
EPwm1Regs.ETSEL.bit.SOCAEN = 0; //disable SOCA
EPwm1Regs.TBCTL.bit.CTRMODE = 3; //freeze counter

//at this point, AdcaResults[] contains a sequence of conversions
//from the selected channel

//software breakpoint, hit run again to get updated conversions
asm(" NOP");
}while(1);
}

//Write ADC configurations and power up the ADC for both ADC A and ADC B
void ConfigureADC(void)
{
EALLOW;

//write configurations
AdcaRegs.ADCCTL2.bit.PRESCALE = 6; //set ADCCLK divider to /4
AdcSetMode(ADC_ADCA, ADC_RESOLUTION_12BIT, ADC_SIGNALMODE_SINGLE);

//Set pulse positions to late
AdcaRegs.ADCCTL1.bit.INTPULSEPOS = 1;

//power up the ADC
AdcaRegs.ADCCTL1.bit.ADCPWDNZ = 1;

//delay for 1ms to allow ADC time to power up
DELAY_US(1000);

EDIS;
}

void ConfigureEPWM(void)
{
EALLOW;
// Assumes ePWM clock is already enabled
EPwm1Regs.ETSEL.bit.SOCAEN = 0; // Disable SOC on A group
EPwm1Regs.ETSEL.bit.SOCASEL = 4; // Select SOC on up-count
EPwm1Regs.ETPS.bit.SOCAPRD = 1; // Generate pulse on 1st event
EPwm1Regs.CMPA.bit.CMPA = 0x0800; // Set compare A value to 2048 counts
EPwm1Regs.TBPRD = 0x1000; // Set period to 4096 counts
EPwm1Regs.TBCTL.bit.CTRMODE = 3; // freeze counter
EDIS;
}

void SetupADCEpwm(Uint16 channel)
{
Uint16 acqps;

//determine minimum acquisition window (in SYSCLKS) based on resolution
if(ADC_RESOLUTION_12BIT == AdcaRegs.ADCCTL2.bit.RESOLUTION){
acqps = 14; //75ns
}
else { //resolution is 16-bit
acqps = 63; //320ns
}

//Select the channels to convert and end of conversion flag
EALLOW;
AdcaRegs.ADCSOC0CTL.bit.CHSEL = channel; //SOC0 will convert pin A0
AdcaRegs.ADCSOC0CTL.bit.ACQPS = acqps; //sample window is 100 SYSCLK cycles
AdcaRegs.ADCSOC0CTL.bit.TRIGSEL = 5; //trigger on ePWM1 SOCA/C
AdcaRegs.ADCINTSEL1N2.bit.INT1SEL = 0; //end of SOC0 will set INT1 flag
AdcaRegs.ADCINTSEL1N2.bit.INT1E = 1; //enable INT1 flag
AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; //make sure INT1 flag is cleared
}

interrupt void adca1_isr(void)
{
AdcaResults[resultsIndex++] = AdcaResultRegs.ADCRESULT0;
if(RESULTS_BUFFER_SIZE <= resultsIndex)
{
resultsIndex = 0;
bufferFull = 1;
}

AdcaRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; //clear INT1 flag
PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;
}

Thank you for your valuable time

Hi Debashish,

If you are getting that message:

it means there is no code loaded in the part.  After successful compilation of your code, can you walk me through the steps you have gone through in CCS to load the code?  Let us start first with the program loading and how you executed the code before debugging the ADC issue.

Regards,

Joseph

Thank you Joseph,

I am using the following steps

Build > Debug > Run; Its the standard way , i am using the process.

I doubt, is there any syntax in the code i am using which stops the execution.I have referred the code of temprature sensor from control suite , and as i remember while importing the code from v210, two options were there for dual core i.e. CPU01 and CPU02, where i selected the CPU02.Is this problem related to that.

Please resolve the issue as i have spent quite a long time to get rid about these.

Hi Debahish,

The error code you are getting , " No source available for 0x3ff16a" points to CPU1.  You need to make sure that you load your code to the correct CPU.

Regards,

Joseph