Other Parts Discussed in Thread: CONTROLSUITE, C2000WARE
Tool/software: TI C/C++ Compiler
I am trying to produce three phase sine wave using epwm module. these are some predefined variables
#define DEAD_BAND 37.5
#define TB_PRD 61.03515625
#define CLK_DIV TB_DIV4
#define HSPCLK_DIV TB_DIV4
the program is stuck at epwm2 init function.
void InitEPwm1()
{
EPwm1Regs.PCCTL.bit.CHPFREQ = 1;
EPwm1Regs.PCCTL.bit.CHPEN = 1;
EPwm1Regs.TBPRD = TB_PRD; // Set timer period
EPwm1Regs.TBPHS.half.TBPHS = 0x0000; // Phase is 0
EPwm1Regs.TBCTR = 0x0000; // Clear counter
// Setup TBCLK
EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Disable phase loading
EPwm1Regs.TBCTL.bit.HSPCLKDIV = HSPCLK_DIV; // Clock ratio to SYSCLKOUT
EPwm1Regs.TBCTL.bit.CLKDIV = CLK_DIV;
EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO; //Generar una señal cuando CTR = 0. Esto hace al PWM1 como el maestro.
EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW; // Load registers every ZERO
EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO;
EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO;
// Setup compare
EPwm1Regs.CMPA.half.CMPA = TB_PRD;
// Set actions
EPwm1Regs.AQCTLA.bit.CAU = AQ_SET; // Set PWM1A on Zero
EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR;
EPwm1Regs.AQCTLB.bit.CAU = AQ_CLEAR; // Set PWM1A on Zero
EPwm1Regs.AQCTLB.bit.CAD = AQ_SET;
// Active Low PWMs - Setup Deadband
EPwm1Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
EPwm1Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC;
EPwm1Regs.DBCTL.bit.IN_MODE = DBA_ALL;
EPwm1Regs.DBRED = DEAD_BAND;
EPwm1Regs.DBFED = DEAD_BAND;
EPwm1Regs.ETSEL.bit.INTEN = 1; // Habilitar interrupción por evento.
EPwm1Regs.ETSEL.bit.INTSEL = ET_CTRD_CMPA;
EPwm1Regs.ETPS.bit.INTPRD = ET_1ST; //Interrupt on first event.
}
void InitEPwm2()
{
EPwm2Regs.TBPRD = TB_PRD; // Set timer period
EPwm2Regs.TBPHS.half.TBPHS = EPwm1Regs.TBPRD/3; // TBPHS = 1/3*TBPRD.
EPwm2Regs.TBCTR = 0x0000; // Clear counter
// Setup TBCLK
EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Disable phase loading
EPwm2Regs.TBCTL.bit.HSPCLKDIV = HSPCLK_DIV; // Clock ratio to SYSCLKOUT
EPwm2Regs.TBCTL.bit.CLKDIV = CLK_DIV; // Slow just to observe on the scope
EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN; // PWM2 esclavo del PWM1.
// Setup compare
EPwm2Regs.CMPA.half.CMPA = TB_PRD;
// Set actions
EPwm2Regs.AQCTLA.bit.CAU = AQ_SET; // Set PWM2A on Zero
EPwm2Regs.AQCTLA.bit.CAD = AQ_CLEAR;
EPwm2Regs.AQCTLB.bit.CAU = AQ_CLEAR; // Set PWM2A on Zero
EPwm2Regs.AQCTLB.bit.CAD = AQ_SET;
// Active Low complementary PWMs - setup the deadband
EPwm2Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
EPwm2Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC;
EPwm2Regs.DBCTL.bit.IN_MODE = DBA_ALL;
EPwm2Regs.DBRED = DEAD_BAND;
EPwm2Regs.DBFED = DEAD_BAND;
}
does the problem is because of #define TB_PRD 61.03515625 and #define DEAD_BAND 37.5 as it is being provided float value.
can someone please provide some remedy for this.