Dear Forum,
I am trying to run the examples in the ControlSuite. I have a C2000 Launchpad with Delfino 28377S uC. I have been able to run a DAC/ADC example from a training course. So I know my hardware is responding, drivers etc in place.
Since we want to generate a sine wave, and compute its FFT, I was trying to run the codes SGENT1 and SGENHP1 (high-precision sine wave) and Fixed_Point_RFFT for FFT calculations. These example projects are located in C:\ti\controlSUITE\libs\dsp\sgen & C:\ti\controlSUITE\libs\dsp\FixedPointLib and I updated the project properties to use the 28377 cmd file and tried with the compiler that the project was bundled with (6.0.1).
The projects build without errors. When I debug it, I do not see any output. I even loaded the associated js script file for viewing the watch expressions and graph, but those show up empty too. When I step through the code, I find that it always halts on
while(SysCtrlRegs.PLLSTS.bit.PLLLOCKS != 1)
located in DSP2833x_SysCtrl.c and this happens with all the listed projects.
The main file of SGENHP1 is like so:
// =====================================================================================
// This software is licensed for use with Texas Instruments C28x
// family DSCs. This license was provided to you prior to installing
// the software. You may review this license by consulting a copy of
// the agreement in the doc directory of this library.
// -------------------------------------------------------------------------------------
// Copyright (C) 2010-2011 Texas Instruments, Incorporated.
// All Rights Reserved.
//======================================================================================
/* ==============================================================================
System Name: Signal Generator Module demo
File Name: SGENHP1.C
Description: Primary System file for demonstrating the Signal Generator module
Originator: Digital control systems Group - Texas Instruments
Target dependency: C28x
Description:
============
The "C" frame work, for demonstrating the signal generator module is given below
___________ _____________
| | | |
| | X1=OUT | EVMDAC |
| SGENHP_1 |-------->| DLOG_4CH |
| | | PWMDAC |
|___________| |_____________|
*/
//######################################################################################
// $TI Release: C28x SGEN Library Version v1.01 $
// $Release Date: September 30, 2011 $
//######################################################################################
#include "DSP28x_Project.h" // Device Headerfile and Examples Include File
//#include "F28x_Project.h" // DSP28x Headerfile
#include <sgen.h>
//#include "ti_ascii.h"
//#include "sci_io.h"
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <file.h>
#define SIGNAL_LENGTH 512
/* Create an instance of Signal generator module */
SGENHP_1 sgen = SGENHP_1_DEFAULTS;
#pragma DATA_SECTION(ipcb, "SGENipcb");
int ipcb[SIGNAL_LENGTH];
/* Temp variable to store the signal genr output */
int x1;
void main()
{
unsigned long i;
InitSysCtrl();
DINT;
InitPieCtrl();
IER = 0x0000;
IFR = 0x0000;
InitPieVectTable();
EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM
/* Signal Generator module initialisation */
sgen.offset=0;
sgen.gain=0x7fff; /* gain=1 in Q15 */
sgen.freq=0x14F8CF92; /* freq = (Required Freq/Max Freq)*2^31 */
/* = (50/305.17)*2^31 = 0x14f8cf92 */
sgen.step_max=0x3E7FB26; /* Max Freq= (step_max * sampling freq)/2^32 */
/* Max Freq = (0x3E7FB26*20k)/2^32 = 305.17 */
sgen.alpha=536870912; /* phase_norm =(pi/4/(2*pi))*2^16=8192 */
for(i=0;i<SIGNAL_LENGTH;i++)
{
ipcb[i]=0;
}
for(i=0;i<SIGNAL_LENGTH;i++)
{
sgen.calc(&sgen);
x1=sgen.out;
ipcb[i]=x1;
}
for(;;);
} /* End: main() */
Do I need to make any changes to this code ? or any other setting that needs to be changed ? Does the code need some interrupt function or something ?
Thanks
