Texas Instruments 28xxx 사용자 설명서

// Initialization Time
// = = = = = = = = = = = = = = = = = = = = = = =

=

EPwm1Regs.TBPRD = 600;

// Period = 601 TBCLK counts

EPwm1Regs.CMPA.half.CMPA = 200;

// Compare A = 200 TBCLK counts

EPwm1Regs.CMPB = 400;

// Compare B = 400 TBCLK counts

EPwm1Regs.TBPHS = 0;

// Set Phase register to zero

EPwm1Regs.TBCTR = 0;

// clear TB counter

EPwm1Regs.TBCTL.bit.CTRMODE = TB_UP;
EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE;

// Phase loading disabled

EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW;
EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_DISABLE;
EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;

// TBCLK = SYSCLKOUT

EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;
EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO;

// load on TBCTR = Zero

EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO;

// load on TBCTR = Zero

EPwm1Regs.AQCTLA.bit.CAU = AQ_SET;
EPwm1Regs.AQCTLA.bit.CBU = AQ_CLEAR;
EPwm1Regs.AQCTLB.bit.ZRO = AQ_TOGGLE;
//
// Run Time
// = = = = = = = = = = = = = = = = = = = = = = =

=

EPwm1Regs.CMPA.half.CMPA = EdgePosA;

// adjust duty for output EPWM1A only

EPwm1Regs.CMPB = EdgePosB;

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SPRU791D – November 2004 – Revised October 2007