Part Number: TMS320F28P550SJ
Other Parts Discussed in Thread: SYSCONFIG, C2000WARE
Tool/software:
dear team,
this below code from adc example not working in register wise configuration if i do the same through sysconfig using driver lib its works fine .
please find the c code for reference
//###########################################################################
//
// FILE: adc_ex2_epwm_tempsensor.c
//
// TITLE: Sample temperature sensor and convert to temperature
//
//! \addtogroup bitfield_example_list
//! <h1> ADC temperature sensor conversion</h1>
//!
//! This example sets up the ePWM to periodically trigger the ADC. The
//! ADC converts the internal connection to the temperature sensor,
//! which is then interpreted as a temperature by calling the
//! GetTemperatureC function.
//!
//! After the program runs, the memory will contain:\n
//! - \b sensorSample \b : The raw reading from the temperature sensor. \n
//! - \b sensorTemp \b : The interpretation of the sensor sample as a
//! temperature in degrees Celsius.
//!
//
//#############################################################################
//
//
//
// C2000Ware v5.04.00.00
//
// Copyright (C) 2024 Texas Instruments Incorporated - http://www.ti.com
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
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//
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// $
//#############################################################################
//
// Included Files
//
#include "f28x_project.h"
//
// Defines
//
#define RESULTS_BUFFER_SIZE 256
//
// Globals
//
uint16_t sensorSample = 0;
uint16_t isrCount = 0;
int16_t sensorTemp = 0;
//
// Function Prototypes
//
void initADC(void);
void initEPWM(void);
void initADCSOC(void);
__interrupt void adcC1ISR(void);
//
// Main
//
void main(void)
{
//
// Initialize device clock and peripherals
//
InitSysCtrl();
//
// Initialize GPIO
//
InitGpio();
//
// 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.
//
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).
//
InitPieVectTable();
//
// Map ISR functions
//
EALLOW;
PieVectTable.ADCC1_INT = &adcC1ISR; // Function for ADCC interrupt 1
EDIS;
//
// Configure the ADC and power it up
//
initADC();
//
// Configure the ePWM
//
initEPWM();
//
// Setup the ADC for ePWM triggered conversions on channel 1
//
initADCSOC();
EALLOW;
//
// Enable PIE interrupt
//
PieCtrlRegs.PIEIER1.bit.INTx3 = 1;
//
// Sync ePWM
//
CpuSysRegs.PCLKCR0.bit.TBCLKSYNC = 1;
//
// 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
InitTempSensor(3.3f);
//
// 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(1)
{
}
}
//
// initADC - Function to configure and power up ADCC.
//
void initADC(void)
{
//
// Setup VREF as internal
//
SetVREF(ADC_ADCC, ADC_INTERNAL, ADC_VREF3P3);
EALLOW;
//
// Set ADCCLK divider to /4
//
AdccRegs.ADCCTL2.bit.PRESCALE = 6;
//
// Set pulse positions to late EOC
//
AdccRegs.ADCCTL1.bit.INTPULSEPOS = 1;
//
// Power up the ADC and then delay for 1 ms
//
AdccRegs.ADCCTL1.bit.ADCPWDNZ = 1;
EDIS;
DELAY_US(1000);
}
//
// initEPWM - Function to configure ePWM1 to generate the SOC.
//
void initEPWM(void)
{
EALLOW;
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;
}
//
// initADCSOC - Function to configure ADCA's SOC0 to be triggered by ePWM1.
//
void initADCSOC(void)
{
//
// Select the channels to convert and the end of conversion flag
//
EALLOW;
AdccRegs.ADCSOC0CTL.bit.CHSEL = 0xC; // SOC0 will convert pin C12
AdccRegs.ADCSOC0CTL.bit.ACQPS = 45; // Sample window is 10 SYSCLK cycles
AdccRegs.ADCSOC0CTL.bit.TRIGSEL = 5; // Trigger on ePWM1 SOCA
AdccRegs.ADCINTSEL1N2.bit.INT1SEL = 0; // End of SOC0 will set INT1 flag
AdccRegs.ADCINTSEL1N2.bit.INT1E = 1; // Enable INT1 flag
AdccRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; // Make sure INT1 flag is cleared
EDIS;
}
//
// adcC1ISR - ADC C Interrupt 1 ISR
//
__interrupt void adcC1ISR(void)
{
isrCount++;
//
// Add the latest result to the buffer
// ADCRESULT0 is the result register of SOC0
sensorSample = AdccResultRegs.ADCRESULT0;
sensorTemp = GetTemperatureC(sensorSample);
//
// Clear the interrupt flag
//
AdccRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;
//
// Check if overflow has occurred
//
if(1 == AdccRegs.ADCINTOVF.bit.ADCINT1)
{
AdccRegs.ADCINTOVFCLR.bit.ADCINT1 = 1; //clear INT1 overflow flag
AdccRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; //clear INT1 flag
}
//
// Acknowledge the interrupt
//
PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;
}
//
// End of file
//
