最近在用hc32f460做舵机，用的Timer4的1单元的互补PWM，发现PWM输出时，不能设置占空比为0%和100%。设置成0或者100时，应该直接输出为低电平或者高电平，但是芯片输出的是波特率为三角波频率一半的方波。不知道需要还需要怎么设置。
/* Enable peripheral clock */
PWC_Fcg0PeriphClockCmd(PWC_FCG0_PERIPH_AOS, Enable);
PWC_Fcg2PeriphClockCmd(PWC_FCG2_PERIPH_TIM41 | PWC_FCG2_PERIPH_TIM42 | PWC_FCG2_PERIPH_TIM43, Enable);
/* Timer4 CNT : Initialize CNT configuration structure */
stcCntInit.enBufferCmd = Disable;//禁止CPSR缓存
stcCntInit.enClk = Timer4CntPclk;//inter clk use pclk 选择时钟源，内部
stcCntInit.enClkDiv = Timer4CntPclkDiv1; /* CNT clock divide */ //16倍分频
stcCntInit.u16Cycle = TIMER4_CNT_CYCLE_VAL;//CPSR 计数器的周期值
stcCntInit.enCntMode = Timer4CntTriangularWave;//WAVE 锯齿波 //三角波
stcCntInit.enZeroIntMsk = Timer4CntIntMask0;
stcCntInit.enPeakIntMsk = Timer4CntIntMask0;
TIMER4_CNT_Init(TIMER4_UNIT, &stcCntInit); /* Initialize CNT */ //配置CCSR和CVPR 和CPSR
/* Timer4 OCO : Initialize OCO configuration structure */ //配置 OCER OCSR
stcOcoInit.enOcoIntCmd = Disable;
stcOcoInit.enPortLevel = OcPortLevelLow;
stcOcoInit.enOccrBufMode = OccrBufTrsfByCntZero;//OccrBufDisable; //使能缓存，OCCR 和OCMR都使能，在0点写入数据
stcOcoInit.enOcmrBufMode = OcmrBufTrsfByCntZero;//OcmrBufDisable;
TIMER4_OCO_Init(TIMER4_UNIT, TIMER4_OCO_UL_CH, &stcOcoInit); /* Initialize OCO low channel */
TIMER4_OCO_Init(TIMER4_UNIT, TIMER4_OCO_VL_CH, &stcOcoInit); /* Initialize OCO low channel */
TIMER4_OCO_Init(TIMER4_UNIT, TIMER4_OCO_WL_CH, &stcOcoInit); /* Initialize OCO low channel */
/*************Timer4 OCO ocmr1[31:0] = 0x0FF0 0FFF*****************************/
if (TIMER4_OCO_UL_CH % 2u)
{
/* OCMR[31:0] Ox 0FF0 0FFF 0000 1111 1111 0000 0000 1111 1111 1111 */
stcLowChCmpMode.enCntZeroLowMatchHighMatchLowChOpState = OcoOpOutputReverse; /* bit[27:26] 11 */
stcLowChCmpMode.enCntZeroLowMatchHighNotMatchLowChOpState = OcoOpOutputReverse; /* bit[11:10] 11 */
stcLowChCmpMode.enCntZeroLowNotMatchHighMatchLowChOpState = OcoOpOutputHold; /* bit[31:30] 00 */
stcLowChCmpMode.enCntZeroLowNotMatchHighNotMatchLowChOpState = OcoOpOutputHold; /* bit[15:14] 00 */
stcLowChCmpMode.enCntUpCntLowMatchHighMatchLowChOpState = OcoOpOutputReverse; /* bit[25:24] 11 */
stcLowChCmpMode.enCntUpCntLowMatchHighNotMatchLowChOpState = OcoOpOutputReverse; /* bit[9:8] 11 */
stcLowChCmpMode.enCntUpCntLowNotMatchHighMatchLowChOpState = OcoOpOutputHold; /* bit[19:18] 00 */
stcLowChCmpMode.enCntPeakLowMatchHighMatchLowChOpState = OcoOpOutputReverse; /* bit[23:22] 11 */
stcLowChCmpMode.enCntPeakLowMatchHighNotMatchLowChOpState = OcoOpOutputReverse; /* bit[7:6] 11 */
stcLowChCmpMode.enCntPeakLowNotMatchHighMatchLowChOpState = OcoOpOutputHold; /* bit[29:28] 00 */
stcLowChCmpMode.enCntPeakLowNotMatchHighNotMatchLowChOpState = OcoOpOutputHold; /* bit[13:12] 00 */
stcLowChCmpMode.enCntDownLowMatchHighMatchLowChOpState = OcoOpOutputReverse; /* bit[21:20] 11 */
stcLowChCmpMode.enCntDownLowMatchHighNotMatchLowChOpState = OcoOpOutputReverse; /* bit[5:4] 11 */
stcLowChCmpMode.enCntDownLowNotMatchHighMatchLowChOpState = OcoOpOutputHold; /* bit[17:16] 00 */
stcLowChCmpMode.enCntZeroMatchOcfState = OcoOcfSet; /* bit[3] 1 */
stcLowChCmpMode.enCntUpCntMatchOcfState = OcoOcfSet; /* bit[2] 1 */
stcLowChCmpMode.enCntPeakMatchOcfState = OcoOcfSet; /* bit[1] 1 */
stcLowChCmpMode.enCntDownCntMatchOcfState = OcoOcfSet; /* bit[0] 1 */
TIMER4_OCO_SetLowChCompareMode(TIMER4_UNIT, TIMER4_OCO_UL_CH, &stcLowChCmpMode); /* Set OCO low channel compare mode */
TIMER4_OCO_SetLowChCompareMode(TIMER4_UNIT, TIMER4_OCO_VL_CH, &stcLowChCmpMode); /* Set OCO low channel compare mode */
TIMER4_OCO_SetLowChCompareMode(TIMER4_UNIT, TIMER4_OCO_WL_CH, &stcLowChCmpMode); /* Set OCO low channel compare mode */
}
/* Enable OCO */ //OCSR 端口使能，一个通道同时使能H和L两个端口
TIMER4_OCO_OutputCompareCmd(TIMER4_UNIT, TIMER4_OCO_UL_CH, Enable);//
TIMER4_OCO_OutputCompareCmd(TIMER4_UNIT, TIMER4_OCO_VL_CH, Enable);//
TIMER4_OCO_OutputCompareCmd(TIMER4_UNIT, TIMER4_OCO_WL_CH, Enable);//
/* Initialize PWM I/O */ //设置管脚功能
PORT_SetFunc(TIMER4_1UPWM_H_PORT, TIMER4_1UPWM_H_PIN, Func_Tim4, Disable);
PORT_SetFunc(TIMER4_1UPWM_L_PORT, TIMER4_1UPWM_L_PIN, Func_Tim4, Disable);
PORT_SetFunc(TIMER4_1VPWM_H_PORT, TIMER4_1VPWM_H_PIN, Func_Tim4, Disable);
PORT_SetFunc(TIMER4_1VPWM_L_PORT, TIMER4_1VPWM_L_PIN, Func_Tim4, Disable);
PORT_SetFunc(TIMER4_1WPWM_H_PORT, TIMER4_1WPWM_H_PIN, Func_Tim4, Disable);
PORT_SetFunc(TIMER4_1WPWM_L_PORT, TIMER4_1WPWM_L_PIN, Func_Tim4, Disable);
/* Timer4 PWM: Initialize PWM configuration structure */ //,POCR基本控制寄存器
stcPwmInit.enRtIntMaskCmd = Enable;//配置RCSR ,重载功能有效时，屏蔽掉中断。
stcPwmInit.enClkDiv = PwmPlckDiv1; //计算器分频 16分频 POCR
stcPwmInit.enOutputState = PwmHPwmLHold;//输出极性，H和L 都不反转
stcPwmInit.enMode = PwmDeadTimerMode;//01 死区定时器模式 00 就是直通模式
TIMER4_PWM_Init(TIMER4_UNIT, TIMER4_PWM_CHU, &stcPwmInit); /* Initialize timer4 pwm */
TIMER4_PWM_Init(TIMER4_UNIT, TIMER4_PWM_CHV, &stcPwmInit); /* Initialize timer4 pwm */
TIMER4_PWM_Init(TIMER4_UNIT, TIMER4_PWM_CHW, &stcPwmInit); /* Initialize timer4 pwm */
TIMER4_PWM_WriteDeadRegionValue(TIMER4_UNIT, TIMER4_PWM_CHU, 20u,20u );//u16OcoOccrVal 设置死区 PDAR PDBR
TIMER4_PWM_WriteDeadRegionValue(TIMER4_UNIT, TIMER4_PWM_CHV, 20u,20u );//u16OcoOccrVal 设置死区 PDAR PDBR
TIMER4_PWM_WriteDeadRegionValue(TIMER4_UNIT, TIMER4_PWM_CHW, 20u,20u );//u16OcoOccrVal 设置死区 PDAR PDBR
/* Timer4-SEVT: Initialize SEVT configuration structure */
stcSevtInit.enBuf = SevtBufDisable;//缓存无限，直接写入寄存器
stcSevtInit.enMode = SevtCompareTrigMode;//选择比较触发，还可以选择延时触发
stcSevtInit.enTrigEvt = SevtTrgEvtSCMUL;//产生触发事件，比如AD模块可以去选择此触发来开始AD转换
TIMER4_SEVT_Init(TIMER4_UNIT, Timer4SevtCh1, &stcSevtInit); /* Initialize SEVT */
TIMER4_SEVT_WriteSCCR(TIMER4_UNIT, Timer4SevtCh1, 1000); /* Set SEVT compare value */
stcSevtTrgCond.enUpMatchCmd = Disable;//Enable;//在上升沿与SCCR匹配时，产生事件输出
stcSevtTrgCond.enDownMatchCmd = Enable;//Disable;
stcSevtTrgCond.enZeroMatchCmd = Disable;
stcSevtTrgCond.enPeakMatchCmd = Disable;
TIMER4_SEVT_SetTriggerCond(TIMER4_UNIT, Timer4SevtCh1, &stcSevtTrgCond); /* Set SEVT operation condition */
/* Clear && Start CNT */
TIMER4_CNT_ClearCountVal(TIMER4_UNIT);
TIMER4_CNT_Start(TIMER4_UNIT);
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