Tool/software:
Dear Team,
I am using the TMS320F28335 and I want to configure all ADC 0 to 15 in polling mode and I have set configuration accordingly but only 0 to 7 ADC is working other values of ADC is not correct.
int main(void)
{
/* System Init */
InitSysCtrl();
memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (Uint32)&RamfuncsLoadSize);
/*Call Flash Initialization to setup flash waitstates
This function must reside in RAM*/
InitFlash(); // Call the flash wrapper init function
DINT;
/* Specific clock setting for ADC*/
EALLOW;
SysCtrlRegs.HISPCP.all = ADC_MODCLK; // HSPCLK = SYSCLKOUT/ADC_MODCLK
EDIS;
// vInitGPIO(); // GPIO Init Definitions
/* Initialize 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 DSP2833x_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 DSP2833x_DefaultIsr.c.
This function is found in DSP2833x_PieVect.c.*/
InitPieVectTable();
IER |= M_INT1; // Enable CPU Interrupt 1
/* All Peripheral Configurations */
vInitPeriPherals();
ConfigureADC();
EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM
while(1)
{
//read gpio status when uart is off
vGpio_status();
vADS7952ReadAllChannels(u16Buffer);
ReadADCChannels(u16AdcVal);
}
}
//==================================================================================================================================
void ConfigureADC(void)
{
int i=0;
InitAdc();
EALLOW;
AdcRegs.ADCTRL3.bit.ADCCLKPS = 0x1;
AdcRegs.ADCTRL1.bit.ACQ_PS = 0xf;
AdcRegs.ADCTRL1.bit.SEQ_CASC = 1; // 1 Cascaded mode
// Configure maximum number of conversions (16 channels)
AdcRegs.ADCMAXCONV.bit.MAX_CONV1 = 15; // 16 conversions (0 to 15)
AdcRegs.ADCCHSELSEQ1.bit.CONV00 = 0x0;
AdcRegs.ADCCHSELSEQ1.bit.CONV01 = 0x1;
AdcRegs.ADCCHSELSEQ1.bit.CONV02 = 0x2;
AdcRegs.ADCCHSELSEQ1.bit.CONV03 = 0x3;
AdcRegs.ADCCHSELSEQ2.bit.CONV04 = 0x4;
AdcRegs.ADCCHSELSEQ2.bit.CONV05 = 0x5;
AdcRegs.ADCCHSELSEQ2.bit.CONV06 = 0x6;
AdcRegs.ADCCHSELSEQ2.bit.CONV07 = 0x7;
// AdcRegs.ADCCHSELSEQ3.bit.CONV08 = 0x8;
// AdcRegs.ADCCHSELSEQ3.bit.CONV09 = 0x9;
// AdcRegs.ADCCHSELSEQ3.bit.CONV10 = 0x10;
// AdcRegs.ADCCHSELSEQ3.bit.CONV11 = 0x11;
// AdcRegs.ADCCHSELSEQ4.bit.CONV12 = 0x12;
// AdcRegs.ADCCHSELSEQ4.bit.CONV13 = 0x13;
// AdcRegs.ADCCHSELSEQ4.bit.CONV14 = 0x14;
// AdcRegs.ADCCHSELSEQ4.bit.CONV15 = 0x15;
AdcRegs.ADCTRL1.bit.CONT_RUN = 1; // Setup continuous run
for (i=0; i<16; i++)
{
u16AdcVal[i] = 0;
}
//
// Start SEQ1
//
AdcRegs.ADCTRL2.all = 0x2000;
// Power up the ADC
// SysCtrlRegs.PCLKCR0.bit.ADCENCLK = 1; // Enable ADC clock
// AdcRegs.ADCTRL3.bit.ADCPWDN = 1; // Power up ADC core
// AdcRegs.ADCTRL3.bit.ADCBGRFDN = 3; // Power up Bandgap and reference
DELAY_US(5000); // Wait for ADC to stabilize
// Set ADC clock prescaler
// AdcRegs.ADCTRL3.bit.ADCCLKPS = 6; // ADC Clock Prescaler (SYSCLK / 7)
// Configure max conversions and sequencing
// AdcRegs.ADCMAXCONV.bit.MAX_CONV1 = 15; // Max conversions = 16 (0 to 15)
// AdcRegs.ADCTRL1.bit.SEQ_CASC = 1; // Enable cascading mode (16-step sequence)
// Configure ADC channel selection
// AdcRegs.ADCCHSELSEQ1.all = 0x3210; // ADCINA0-3
// AdcRegs.ADCCHSELSEQ2.all = 0x7654; // ADCINA4-7
// AdcRegs.ADCCHSELSEQ3.all = 0xBA98; // ADCINB0-3
// AdcRegs.ADCCHSELSEQ4.all = 0xFEDC; // ADCINB4-7
// Configure acquisition window
// AdcRegs.ADCTRL1.bit.ACQ_PS = 6; // Acquisition window = 7 ADC clock cycles
// Software trigger mode
// AdcRegs.ADCTRL2.bit.SOC_SEQ1 = 0; // Ensure auto-sequencer is not triggered
// AdcRegs.ADCTRL2.bit.INT_ENA_SEQ1 = 0; // Disable interrupts for sequence
EDIS;
}
void ReadADCChannels(Uint16 *adcResults)
{
int i=0;
// for (i=0; i<3; i++)
{
//
// Wait for interrupt
//
while (AdcRegs.ADCST.bit.INT_SEQ1== 0)
{
}
AdcRegs.ADCST.bit.INT_SEQ1_CLR = 1;
u16AdcVal[0] = AdcMirror.ADCRESULT0;
/* ADC buffer */ /* ADC result register */ /* ADC Pin in schematic */
u16AdcVal[0] = (AdcMirror.ADCRESULT0); //adc_v_vdc1 - ADCINA0
u16AdcVal[1] = (AdcMirror.ADCRESULT1); //lv_tm1p1 - ADCINB0
u16AdcVal[2] = (AdcMirror.ADCRESULT2); //adc_v_ir - ADCINA1
u16AdcVal[3] = (AdcMirror.ADCRESULT3); //lv_tm1p2 - ADCINB1
u16AdcVal[4] = (AdcMirror.ADCRESULT4); //adc_v_iy - ADCINA2
u16AdcVal[5] = (AdcMirror.ADCRESULT5); //lv_tm2p1 - ADCINB2
u16AdcVal[6] = (AdcMirror.ADCRESULT6); //adc_v_ib - ADCINA3
u16AdcVal[7] = (AdcMirror.ADCRESULT7); //lv_tm2p2 - ADCINB3
u16AdcVal[8] = (AdcMirror.ADCRESULT8); //adc_v_bkchpr - ADCINA4
u16AdcVal[9] = (AdcMirror.ADCRESULT9); //adc_v_vdc4 - ADCINB4
u16AdcVal[10] = (AdcMirror.ADCRESULT10); //adc_i_idc - ADCINA5
u16AdcVal[11] = (AdcMirror.ADCRESULT11); //adc_v_vdc5 - ADCINB5
u16AdcVal[12] = (AdcMirror.ADCRESULT12); //adc_v_vdc2 - ADCINA6
u16AdcVal[13] = (AdcMirror.ADCRESULT13); //adc_v_spare1 - ADCINB6
u16AdcVal[14] = (AdcMirror.ADCRESULT14); //adc_v_vdc3 - ADCINA7
u16AdcVal[15] = (AdcMirror.ADCRESULT15); //adc_v_spare2 - ADCINB7
}
}
Please guide me and can you please correct my code and give me right code for the same.
Best and regards,
Dipak
