按照tida_010054方案配置DAB驱动程序,算法控制移相时,移相比例在从大于50%到小于50%切换时,会出现PWM丢失问题
//======================================================================//功能：配置上升/下降沿死区//参数：无//返回：无//======================================================================static void HRPWM_setupUpDownCountWithDeadBand(uint32_t base1,float32_t pwmFreq_Hz,uint16_t inverter,float32_t red_ns,float32_t fed_ns){ uint32_t pwmPeriod_ticks; uint32_t dbFED_ticks, dbRED_ticks;
pwmPeriod_ticks = (uint32_t)((PWMSYSCLOCK_FREQ_HZ * (float32_t)(float32_t)65536.0) / (float32_t)pwmFreq_Hz) >> 1; pwmPeriod_ticks = (pwmPeriod_ticks & 0xFFFFFF00);
dbRED_ticks = ((uint32_t)(red_ns * (float32_t)(float32_t)65536.0 * ((float32_t)1.0e-9) * PWMSYSCLOCK_FREQ_HZ * 2.0f)); dbRED_ticks = ( dbRED_ticks & 0xFFFFFE00);
dbFED_ticks = ((uint32_t)(red_ns * (float32_t)(float32_t)65536.0 * ((float32_t)1.0e-9) * PWMSYSCLOCK_FREQ_HZ * 2.0f)); dbFED_ticks = ( dbFED_ticks & 0xFFFFFE00);
//设置周期 EPWM_setPeriodLoadMode(base1, EPWM_PERIOD_SHADOW_LOAD); HWREG(base1 + HRPWM_O_TBPRDHR) = pwmPeriod_ticks;
EPWM_setTimeBaseCounter(base1, 0); EPWM_setPhaseShift(base1, 0); EPWM_setTimeBaseCounterMode(base1, EPWM_COUNTER_MODE_UP_DOWN); EPWM_setClockPrescaler(base1, EPWM_CLOCK_DIVIDER_1, EPWM_HSCLOCK_DIVIDER_1);
HWREG(base1 + HRPWM_O_CMPA) = pwmPeriod_ticks >> 1; //duty = 50%
//设置影子模式 EPWM_setCounterCompareShadowLoadMode(base1, EPWM_COUNTER_COMPARE_A,EPWM_COMP_LOAD_ON_CNTR_ZERO_PERIOD); EPWM_setCounterCompareShadowLoadMode(base1, EPWM_COUNTER_COMPARE_B,EPWM_COMP_LOAD_ON_CNTR_ZERO_PERIOD);
HWREG(base1 + HRPWM_O_CMPB) = pwmPeriod_ticks >> 1; //duty = 50%
EPWM_disableCounterCompareShadowLoadMode(base1, EPWM_COUNTER_COMPARE_C);
EALLOW; //清除动作寄存器及死区寄存器 HWREGH(base1 + EPWM_O_AQCTLA) = 0x0000; HWREGH(base1 + EPWM_O_AQCTLB) = 0x0000;
HWREGH(base1 + EPWM_O_DCBCTL) = 0x0000; EDIS;
//设置动作限定符，PWM高电平有效 if(inverter == 0) { EPWM_setActionQualifierAction(base1, EPWM_AQ_OUTPUT_A,EPWM_AQ_OUTPUT_HIGH, EPWM_AQ_OUTPUT_ON_TIMEBASE_UP_CMPA); EPWM_setActionQualifierAction(base1, EPWM_AQ_OUTPUT_A,EPWM_AQ_OUTPUT_LOW, EPWM_AQ_OUTPUT_ON_TIMEBASE_DOWN_CMPA); } else { EPWM_setActionQualifierAction(base1, EPWM_AQ_OUTPUT_A,EPWM_AQ_OUTPUT_LOW, EPWM_AQ_OUTPUT_ON_TIMEBASE_UP_CMPA); EPWM_setActionQualifierAction(base1, EPWM_AQ_OUTPUT_A,EPWM_AQ_OUTPUT_HIGH, EPWM_AQ_OUTPUT_ON_TIMEBASE_DOWN_CMPA); }
//影子模式，在零点加载死区值 EPWM_setRisingEdgeDelayCountShadowLoadMode(base1,EPWM_RED_LOAD_ON_CNTR_ZERO); EPWM_setFallingEdgeDelayCountShadowLoadMode(base1,EPWM_FED_LOAD_ON_CNTR_ZERO); EPWM_setDeadBandCounterClock(base1, EPWM_DB_COUNTER_CLOCK_HALF_CYCLE);
//使能上/下边沿死区 EPWM_setDeadBandDelayMode(base1, EPWM_DB_RED, true); EPWM_setDeadBandDelayMode(base1, EPWM_DB_FED, true);
//上升/下降沿死区输入 EPWM_setRisingEdgeDeadBandDelayInput(base1, EPWM_DB_INPUT_EPWMA); EPWM_setFallingEdgeDeadBandDelayInput(base1, EPWM_DB_INPUT_EPWMA);
//设置死区极性 EPWM_setDeadBandDelayPolarity(base1, EPWM_DB_FED,EPWM_DB_POLARITY_ACTIVE_LOW); EPWM_setDeadBandDelayPolarity(base1, EPWM_DB_RED,EPWM_DB_POLARITY_ACTIVE_HIGH);
//设置死区值 HWREG(base1 + HRPWM_O_DBFEDHR) = dbFED_ticks; HWREG(base1 + HRPWM_O_DBREDHR) = dbRED_ticks;
//选择双边沿MEP控制 HRPWM_setMEPEdgeSelect(base1, HRPWM_CHANNEL_A,HRPWM_MEP_CTRL_RISING_AND_FALLING_EDGE); HRPWM_setCounterCompareShadowLoadEvent(base1, HRPWM_CHANNEL_A,HRPWM_LOAD_ON_CNTR_ZERO_PERIOD);
HRPWM_setMEPEdgeSelect(base1, HRPWM_CHANNEL_B,HRPWM_MEP_CTRL_RISING_AND_FALLING_EDGE); HRPWM_setCounterCompareShadowLoadEvent(base1, HRPWM_CHANNEL_B,HRPWM_LOAD_ON_CNTR_ZERO_PERIOD);
//MEP控制相位 HRPWM_setMEPControlMode(base1, HRPWM_CHANNEL_A, HRPWM_MEP_PHASE_CTRL); HRPWM_setMEPControlMode(base1, HRPWM_CHANNEL_B, HRPWM_MEP_PHASE_CTRL);
//死区MEP HRPWM_setDeadbandMEPEdgeSelect(base1, HRPWM_DB_MEP_CTRL_RED_FED);
//使能MEP自动比例模式 HRPWM_enableAutoConversion(base1);
//开启高分辨率周期// HRPWM_enablePeriodControl(base1);
#if DAB_GLOBAL_LOAD_ENABLED == 1
// 一次装弹是PWM精确更新的关键机制,首先启用连接到全局重新加载的寄存器机制，对于所有其他寄存器将使用默认机制 EPWM_enableGlobalLoadRegisters(base1, (EPWM_GL_REGISTER_CMPA_CMPAHR | EPWM_GL_REGISTER_CMPB_CMPBHR) );
//将PWM设置在指定事件时重新加载新值 EPWM_setGlobalLoadTrigger(base1, EPWM_GL_LOAD_PULSE_CNTR_ZERO_PERIOD); EPWM_enableGlobalLoadOneShotMode(base1);
//使能全局加载 EPWM_enableGlobalLoad(base1);
//执行一次全局加载 EPWM_setGlobalLoadOneShotLatch(base1);
#endif
}//======================================================================
//======================================================================//功能：PWM配置//参数：无//返回：无//======================================================================void DAB_setupPWM(void){ uint16_t status;
status = SFO_INCOMPLETE;
//计算SFO()用于校正HRMSTEP寄存器(在启动高分辨率控制前执行) while(status == SFO_INCOMPLETE) { status = SFO(); if(status == SFO_ERROR) { SysFaultWord_Bits.bit.PWM_Error = 1; } else { SysFaultWord_Bits.bit.PWM_Error = 0; } }
HRPWM_setupUpDownCountWithDeadBand(PRIM_LEG1_PWM_BASE, NOMINAL_PWM_SWITCHING_FREQUENCY_HZ, 0, PRIM_PWM_DEADBAND_RED_NS, PRIM_PWM_DEADBAND_FED_NS); HRPWM_setupUpDownCountWithDeadBand(PRIM_LEG2_PWM_BASE, NOMINAL_PWM_SWITCHING_FREQUENCY_HZ, 1, PRIM_PWM_DEADBAND_RED_NS, PRIM_PWM_DEADBAND_FED_NS);
HRPWM_setupUpDownCountWithDeadBand(SEC_LEG1_PWM_BASE, NOMINAL_PWM_SWITCHING_FREQUENCY_HZ, 1, SEC_PWM_DEADBAND_RED_NS, SEC_PWM_DEADBAND_FED_NS); HRPWM_setupUpDownCountWithDeadBand(SEC_LEG2_PWM_BASE, NOMINAL_PWM_SWITCHING_FREQUENCY_HZ, 0, SEC_PWM_DEADBAND_RED_NS, SEC_PWM_DEADBAND_FED_NS);
//初级LEG1为主PWM EPWM_disablePhaseShiftLoad(PRIM_LEG1_PWM_BASE); EPWM_disablePhaseShiftLoad(PRIM_LEG2_PWM_BASE); EPWM_enableSyncOutPulseSource(PRIM_LEG1_PWM_BASE,EPWM_SYNC_OUT_PULSE_ON_CNTR_ZERO);
//初级LEG2为从PWM,与主PWM同步 EPWM_setPhaseShift(PRIM_LEG2_PWM_BASE,2); // 写一个2到TBPHS以适应同步脉冲的prop延迟 EPWM_enablePhaseShiftLoad(PRIM_LEG2_PWM_BASE); EPWM_setCountModeAfterSync(PRIM_LEG2_PWM_BASE,EPWM_COUNT_MODE_UP_AFTER_SYNC);
//次级LEG1为从PWM,与主PWM同步，移相控制 EPWM_enablePhaseShiftLoad(SEC_LEG1_PWM_BASE); EPWM_enableSyncOutPulseSource(SEC_LEG1_PWM_BASE,EPWM_SYNC_OUT_PULSE_ON_SOFTWARE); EPWM_setPhaseShift(SEC_LEG1_PWM_BASE, 2); // 写一个2到TBPHS以适应同步脉冲的prop延迟 EPWM_setCountModeAfterSync(SEC_LEG1_PWM_BASE,EPWM_COUNT_MODE_DOWN_AFTER_SYNC);
//次级LEG2为从PWM,与主PWM同步，移相控制 EPWM_setSyncInPulseSource(SEC_LEG2_PWM_BASE ,EPWM_SYNC_IN_PULSE_SRC_SYNCOUT_EPWM1);
EPWM_enablePhaseShiftLoad(SEC_LEG2_PWM_BASE); EPWM_setPhaseShift(SEC_LEG2_PWM_BASE, 2); // 写一个2到TBPHS以适应同步脉冲的prop延迟 EPWM_setCountModeAfterSync(SEC_LEG2_PWM_BASE,EPWM_COUNT_MODE_DOWN_AFTER_SYNC);
EPWM_setActionQualifierContSWForceShadowMode(PRIM_LEG1_PWM_BASE, EPWM_AQ_SW_SH_LOAD_ON_CNTR_ZERO); EPWM_setActionQualifierContSWForceShadowMode(PRIM_LEG2_PWM_BASE, EPWM_AQ_SW_SH_LOAD_ON_CNTR_ZERO); EPWM_setActionQualifierContSWForceShadowMode(SEC_LEG1_PWM_BASE, EPWM_AQ_SW_SH_LOAD_ON_CNTR_ZERO); EPWM_setActionQualifierContSWForceShadowMode(SEC_LEG2_PWM_BASE, EPWM_AQ_SW_SH_LOAD_ON_CNTR_ZERO);
//配置死区交换(OUTSWAP = 11) HWREGH(PRIM_LEG2_PWM_BASE + EPWM_O_DBCTL) = (HWREGH(PRIM_LEG2_PWM_BASE + EPWM_O_DBCTL) | 0x3000); HWREGH(SEC_LEG2_PWM_BASE + EPWM_O_DBCTL) = (HWREGH(SEC_LEG2_PWM_BASE + EPWM_O_DBCTL) | 0x3000);
//PRIM_LEG2, SEC_LEG1, SEC_LEG2与PRIM_LEG1同周期 EPWM_setupEPWMLinks(PRIM_LEG2_PWM_BASE,EPWM_LINK_WITH_EPWM_1, EPWM_LINK_TBPRD); EPWM_setupEPWMLinks(SEC_LEG1_PWM_BASE,EPWM_LINK_WITH_EPWM_1, EPWM_LINK_TBPRD); EPWM_setupEPWMLinks(SEC_LEG2_PWM_BASE,EPWM_LINK_WITH_EPWM_1, EPWM_LINK_TBPRD);
//PRIM_LEG2与PRIM_LEG1同占空比 EPWM_setupEPWMLinks(PRIM_LEG2_PWM_BASE,EPWM_LINK_WITH_EPWM_1, EPWM_LINK_COMP_A); EPWM_setupEPWMLinks(PRIM_LEG2_PWM_BASE,EPWM_LINK_WITH_EPWM_1, EPWM_LINK_COMP_B);
//SEC_LEG2与SEC_LEG1同占空比 EPWM_setupEPWMLinks(SEC_LEG2_PWM_BASE,EPWM_LINK_WITH_EPWM_3, EPWM_LINK_COMP_A); EPWM_setupEPWMLinks(SEC_LEG2_PWM_BASE,EPWM_LINK_WITH_EPWM_3, EPWM_LINK_COMP_B);
EPWM_setGlobalLoadOneShotLatch(PRIM_LEG1_PWM_BASE);
EPWM_forceTripZoneEvent(PRIM_LEG1_PWM_BASE, EPWM_TZ_FORCE_EVENT_OST); EPWM_forceTripZoneEvent(PRIM_LEG2_PWM_BASE, EPWM_TZ_FORCE_EVENT_OST); EPWM_forceTripZoneEvent(SEC_LEG1_PWM_BASE, EPWM_TZ_FORCE_EVENT_OST); EPWM_forceTripZoneEvent(SEC_LEG2_PWM_BASE, EPWM_TZ_FORCE_EVENT_OST);
//配置ADC触发源 EPWM_setADCTriggerSource(EPWM1_BASE,EPWM_SOC_A, EPWM_SOC_TBCTR_ZERO); EPWM_setADCTriggerEventPrescale(EPWM1_BASE,EPWM_SOC_A, 1); EPWM_enableADCTrigger(EPWM1_BASE,EPWM_SOC_A);
//保护功能配置 DAB_setupProtection();
//配置PWM中断 EPWM_setInterruptSource(PRIM_LEG1_PWM_BASE,EPWM_INT_TBCTR_U_CMPC); EPWM_setCounterCompareValue(PRIM_LEG1_PWM_BASE,EPWM_COUNTER_COMPARE_C, ((TICKS_IN_PWM_FREQUENCY(NOMINAL_PWM_SWITCHING_FREQUENCY_HZ, PWMSYSCLOCK_FREQ_HZ) >> 1) - 20));
EPWM_setInterruptEventCount(PRIM_LEG1_PWM_BASE, 1); EPWM_clearEventTriggerInterruptFlag(PRIM_LEG1_PWM_BASE); EPWM_enableInterrupt(PRIM_LEG1_PWM_BASE);
Interrupt_register(PWM_INTERRUPT_NUMBER, &ISR1); Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP3); Interrupt_enable(PWM_INTERRUPT_NUMBER);
//将GPIO配置成PWM DAB_setupPWMpins();}//======================================================================
已经收到了您的案例，调查需要些时间，感谢您的耐心等待。
您好
您使用哪个版本的 DPSDK。
导入的代码来自哪个版本的数字电源 SDK？
C2000Ware_DigitalPower_SDK_5_01_00_00
此问题已在最新版本的 DPSDK 中修复。 请使用最新版本、然后查看是否再次出现该行为。
