CCS: Problem scoping PWM with frequency 1kHz from LAUNCHXL-F28069M

Tool/software: Code Composer Studio

Dear sirs,

The main I use is below :

//------------------------------------------------------------------------------------
//  FILE:   AsymmetricPWM-Main.c
//          (Up, Single Edge Asymmetric Waveform, With Independent Modulation
//          on EPWM2A and EPWM2B)
//
//  Description:    This program sets up the EV TIMER2 to generate complimentary
//          PWM waveforms. The user can then observe the waveforms using an scope from
//          ePWM2A and ePWM2B pins.
//          - In order to change the PWM frequency, the user should change
//           the value of"period".
//          - The duty-cycles can independently be adjusted by changing compare
//          values (duty_cycle_A & duty_cycle_B) for ePWM2A and ePWM2B.
//          - For further details, please search for the SPRU791.PDF
//          (TMS320x28xx, 28xxx Enhanced Pulse Width Modulator Module) at ti.com
//
//  Target: TMS320F2806x or TMS320F2803x families (F28069)
//
//------------------------------------------------------------------------------------
//  $TI Release:$   V1.0
//  $Release Date:$ 11 Jan 2010 - VSC
//------------------------------------------------------------------------------------
//
// PLEASE READ - Useful notes about this Project

// Although this project is made up of several files, the most important ones are:
//   "AsymmetricPWM .c",    this file
//      - Application Initialization, Peripheral config
//      - Application management
//      - Slower background code loops and Task scheduling
//   "AsymmetricPWM-DevInit_F28xxx.c"
//      - Device Initialization, e.g. Clock, PLL, WD, GPIO mapping
//      - Peripheral clock enables
// The other files are generally used for support and defining the registers as C
// structs. In general these files will not need to be changed.
//   "F2806x_RAM_AsymmetricPWM.CMD" or "F2806x_FLASH_AsymmetricPWM.CMD"
//      - Allocates the program and data spaces into the device's memory map.
//   "F2806x_Headers_nonBIOS.cmd" and "F2806x_GlobalVariableDefs.c"
//      - Allocate the register structs into data memory.  These register structs are
//        defined in the peripheral header includes (F2806x_Adc.h, ...)
//
//----------------------------------------------------------------------------------

#include "PeripheralHeaderIncludes.h"
#include "F2806x_EPwm_defines.h"        // useful defines for initialization
//#include "PWM_1ch_Cnf.c"

//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
// FUNCTION PROTOTYPES
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

void DeviceInit(void);
void InitFlash(void);
void MemCopy(Uint16 *SourceAddr, Uint16* SourceEndAddr, Uint16* DestAddr);

void PWM_1ch_CNF(int16 n, Uint16 period, int16 mode, int16 phase);


//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
// VARIABLE DECLARATIONS - GENERAL
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


volatile struct EPWM_REGS *ePWM[] =
                  { &EPwm1Regs,         //intentional: (ePWM[0] not used)
                    &EPwm1Regs,
                    &EPwm2Regs,
                    &EPwm3Regs,
                    &EPwm4Regs,
                    &EPwm5Regs,
                    &EPwm6Regs,
                    &EPwm7Regs,
                  };


// Used for running BackGround in flash and the ISR in RAM
extern Uint16 RamfuncsLoadStart, RamfuncsLoadEnd, RamfuncsRunStart;


//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
// MAIN CODE - starts here
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
void main(void)
{

//=================================
//  INITIALISATION - General
//=================================

    DeviceInit();   // Device Life support & GPIO mux settings

// Only used if running from FLASH
// Note that the variable FLASH is defined by the compiler (-d FLASH)

//-------------------------------------------------------------

    for(;;)
        {
    if(GpioDataRegs.GPADAT.bit.GPIO19 == 0)
            {
    PWM_1ch_CNF(1,3600,1,0);
    PWM_1ch_CNF(2,3600,0,1705);
            }
        }
}

PWM_1ch_CNF.c code is below : 

//----------------------------------------------------------------------------------
//	FILE:			PWM_1ch_config.c
//
//	Description:	Single (A output) channel PWM configuration function
//					Configures the PWM channel in UP Count mode. 
//
//  Target:  		TMS320F2803x, 
//
// The function call is:
//
// 		PWMDRV_1ch_config(int16 n, int16 period, int16 mode, int16 phase)
//
// Function arguments defined as:
//-------------------------------
// n = 		Target ePWM module, 1,2,...16.  e.g. if n=2, then target is ePWM2
// period = PWM period in Sysclks
// mode =	Master/Slave mode, e.g. mode=1 for master, mode=0 for slave
// phase =	phase offset from upstream master in Sysclks,
//			applicable only if mode=0, i.e. slave
//--------------------------------------------------------------------------------
#include "PeripheralHeaderIncludes.h"
#include "F2806x_EPWM_defines.h"

extern volatile struct EPWM_REGS *ePWM[];
Uint16 duty_cycle_A=500;	// Set duty initially
Uint16 duty_cycle_B=500;	// Set duty initially

void PWM_1ch_CNF(int16 n, Uint16 period, int16 mode, int16 phase) {
    
	// Time Base SubModule Registers	
	(*ePWM[n]).TBCTL.bit.PRDLD = TB_IMMEDIATE; 	// set Immediate load
	(*ePWM[n]).TBPRD = period - 1; 				// PWM frequency = 1 / period
	(*ePWM[n]).TBPHS.half.TBPHS = 0;
	(*ePWM[n]).TBCTR = 0; //Configure the PWM time-base counter (TBCTR) frequency or period.
	(*ePWM[n]).TBCTL.bit.CTRMODE = TB_COUNT_UP;  //Set the mode for the time-base counter:
	(*ePWM[n]).TBCTL.bit.HSPCLKDIV = TB_DIV1;   // TBCLK = SYSCLK
	(*ePWM[n]).TBCTL.bit.CLKDIV = TB_DIV1;      // Set the clock rate

	if (mode == 1) { // config as a Master
		(*ePWM[n]).TBCTL.bit.PHSEN = TB_DISABLE;  // Phase loading disabled, master module
		(*ePWM[n]).TBCTL.bit.SYNCOSEL = TB_CTR_ZERO; // sync "down-stream"
	}
	if (mode == 0) { // config as a Slave (Note: Phase+2 value used to compensate for logic delay)
		(*ePWM[n]).TBCTL.bit.PHSEN = TB_ENABLE; // Slave module
		(*ePWM[n]).TBCTL.bit.SYNCOSEL = TB_SYNC_IN; // sync flow-through

		if ((0 <= phase) && (phase <= 2))
			(*ePWM[n]).TBPHS.half.TBPHS = (2 - phase); // Set Phase register to "(2 - phase)"
		else if (phase > 2)
			(*ePWM[n]).TBPHS.half.TBPHS = (period - phase + 2); // Set Phase register to "(period - phase + 2)"
	}

	// Counter Compare Submodule Registers
	(*ePWM[n]).CMPA.half.CMPA = duty_cycle_A; // set duty initially
	(*ePWM[n]).CMPB = duty_cycle_B; // set duty initially
	(*ePWM[n]).CMPCTL.bit.SHDWAMODE = CC_SHADOW; // Shadow mode. Operates as a double buffer.
	(*ePWM[n]).CMPCTL.bit.LOADAMODE = CC_CTR_PRD; // load on CTR=PRD

	// Action Qualifier SubModule Registers
	(*ePWM[n]).AQCTLA.bit.ZRO = AQ_TOGGLE; // toggle actions for EPWM1A
	(*ePWM[n]).AQCTLA.bit.CAU = AQ_CLEAR; // clear actions for EPWM1A

	(*ePWM[n]).AQCTLB.bit.ZRO = AQ_NO_ACTION; //no action for EPWM1B
	(*ePWM[n]).AQCTLB.bit.CAU = AQ_NO_ACTION; //no action for EPWM1B
	(*ePWM[n]).AQCTLB.bit.PRD = AQ_NO_ACTION; //no action for EPWM1B
}

I want 2 pwm signals with 1kHz frequency. But my min epwm frequency was 22kHz when period was  3600 => PWM_1ch_CNF(1,3600,1,0);

I have read the pdf document, I know that I need "TBCTL.bit.HSPCLKDIV = 0x4;" and "TBCTL.bit.CLKDIV = 0x4;" kind of codes but when I added those, the signal was gone. 

What is wrong? is that about duty cycles? or period value? because I know that period is a 16-bit value which should be 65535 max.

Thanks for your attention.