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最近有个项目需求需要输出四路可调频率、占空比和相位输出信号，并且对频率的精度要求比较高。查阅资料发现STM32G474的HRTIM外设比较适合，于是买了块开发板进行调试，因为是四路需要同频输出，所以需要用的HRTIM的Master_Timer,我们需要在cube中配置Master_Timer的四路通道比较值作为后面四路的输出起始值：
然后依次配置TA1\TB1\TC1\TD1四路输出通道，在下面的触发方式中设置输出起始点：
图中的意思就是触发高电平的条件是mastertimer的一路比较值，触发低电平的条件是自己的比较值，从而实现输出的移向，后面三路以此类推配置。配置生成程序后自己在主程序中需要开启四路输出。然后我发现只有第一路TA1的输出和我配置的一样，后面三路的输出波形一致并且始终和配置的有出入。找了一下午最终发现cube生成的初始化代码中的TA1的配置顺序和TB1\TC1\TD1的有差异： void MX_HRTIM1_Init(void) { / USER CODE BEGIN HRTIM1_Init 0 / / USER CODE END HRTIM1_Init 0 / HRTIM_TimeBaseCfgTypeDef pTimeBaseCfg = {0}; HRTIM_TimerCfgTypeDef pTimerCfg = {0}; HRTIM_CompareCfgTypeDef pCompareCfg = {0}; HRTIM_TimerCtlTypeDef pTimerCtl = {0}; HRTIM_OutputCfgTypeDef pOutputCfg = {0}; / USER CODE BEGIN HRTIM1_Init 1 / / USER CODE END HRTIM1_Init 1 / hhrtim1.Instance = HRTIM1; hhrtim1.Init.HRTIMInterruptResquests = HRTIM_IT_NONE; hhrtim1.Init.SyncOptions = HRTIM_SYNCOPTION_NONE; if (HAL_HRTIM_Init(&hhrtim1) != HAL_OK) { Error_Handler(); } if (HAL_HRTIM_DLLCalibrationStart(&hhrtim1, HRTIM_CALIBRATIONRATE_3) != HAL_OK) { Error_Handler(); } if (HAL_HRTIM_PollForDLLCalibration(&hhrtim1, 10) != HAL_OK) { Error_Handler(); } pTimeBaseCfg.Period = 10624; pTimeBaseCfg.RepetitionCounter = 0x00; pTimeBaseCfg.PrescalerRatio = HRTIM_PRESCALERRATIO_MUL2; pTimeBaseCfg.Mode = HRTIM_MODE_CONTINUOUS; if (HAL_HRTIM_TimeBaseConfig(&hhrtim1, HRTIM_TIMERINDEX_MASTER, &pTimeBaseCfg) != HAL_OK) { Error_Handler(); } pTimerCfg.InterruptRequests = HRTIM_MASTER_IT_NONE; pTimerCfg.DMARequests = HRTIM_MASTER_DMA_NONE; pTimerCfg.DMASrcAddress = 0x0000; pTimerCfg.DMADstAddress = 0x0000; pTimerCfg.DMASize = 0x1; pTimerCfg.HalfModeEnable = HRTIM_HALFMODE_DISABLED; pTimerCfg.InterleavedMode = HRTIM_INTERLEAVED_MODE_DISABLED; pTimerCfg.StartOnSync = HRTIM_SYNCSTART_DISABLED; pTimerCfg.ResetOnSync = HRTIM_SYNCRESET_DISABLED; pTimerCfg.DACSynchro = HRTIM_DACSYNC_NONE; pTimerCfg.PreloadEnable = HRTIM_PRELOAD_ENABLED; pTimerCfg.UpdateGating = HRTIM_UPDATEGATING_INDEPENDENT; pTimerCfg.BurstMode = HRTIM_TIMERBURSTMODE_MAINTAINCLOCK; pTimerCfg.RepetitionUpdate = HRTIM_UPDATEONREPETITION_ENABLED; pTimerCfg.ReSyncUpdate = HRTIM_TIMERESYNC_UPDATE_UNCONDITIONAL; if (HAL_HRTIM_WaveformTimerConfig(&hhrtim1, HRTIM_TIMERINDEX_MASTER, &pTimerCfg) != HAL_OK) { Error_Handler(); } pCompareCfg.CompareValue = 10; if (HAL_HRTIM_WaveformCompareConfig(&hhrtim1, HRTIM_TIMERINDEX_MASTER, HRTIM_COMPAREUNIT_1, &pCompareCfg) != HAL_OK) { Error_Handler(); } pCompareCfg.CompareValue = 2656; if (HAL_HRTIM_WaveformCompareConfig(&hhrtim1, HRTIM_TIMERINDEX_MASTER, HRTIM_COMPAREUNIT_2, &pCompareCfg) != HAL_OK) { Error_Handler(); } pCompareCfg.CompareValue = 5312; if (HAL_HRTIM_WaveformCompareConfig(&hhrtim1, HRTIM_TIMERINDEX_MASTER, HRTIM_COMPAREUNIT_3, &pCompareCfg) != HAL_OK) { Error_Handler(); } pCompareCfg.CompareValue = 7968; if (HAL_HRTIM_WaveformCompareConfig(&hhrtim1, HRTIM_TIMERINDEX_MASTER, HRTIM_COMPAREUNIT_4, &pCompareCfg) != HAL_OK) { Error_Handler(); } if (HAL_HRTIM_TimeBaseConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_A, &pTimeBaseCfg) != HAL_OK) { Error_Handler(); } pTimerCtl.UpDownMode = HRTIM_TIMERUPDOWNMODE_UP; pTimerCtl.GreaterCMP1 = HRTIM_TIMERGTCMP1_EQUAL; pTimerCtl.DualChannelDacEnable = HRTIM_TIMER_DCDE_DISABLED; if (HAL_HRTIM_WaveformTimerControl(&hhrtim1, HRTIM_TIMERINDEX_TIMER_A, &pTimerCtl) != HAL_OK) { Error_Handler(); } pTimerCfg.InterruptRequests = HRTIM_TIM_IT_NONE; pTimerCfg.DMARequests = HRTIM_TIM_DMA_NONE; pTimerCfg.PushPull = HRTIM_TIMPUSHPULLMODE_DISABLED; pTimerCfg.FaultEnable = HRTIM_TIMFAULTENABLE_NONE; pTimerCfg.FaultLock = HRTIM_TIMFAULTLOCK_READWRITE; pTimerCfg.DeadTimeInsertion = HRTIM_TIMDEADTIMEINSERTION_DISABLED; pTimerCfg.DelayedProtectionMode = HRTIM_TIMER_A_B_C_DELAYEDPROTECTION_DISABLED; pTimerCfg.UpdateTrigger = HRTIM_TIMUPDATETRIGGER_NONE; pTimerCfg.ResetTrigger = HRTIM_TIMRESETTRIGGER_NONE; pTimerCfg.ResetUpdate = HRTIM_TIMUPDATEONRESET_DISABLED; if (HAL_HRTIM_WaveformTimerConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_A, &pTimerCfg) != HAL_OK) { Error_Handler(); } if (HAL_HRTIM_WaveformTimerConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_B, &pTimerCfg) != HAL_OK) { Error_Handler(); } if (HAL_HRTIM_WaveformTimerConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_C, &pTimerCfg) != HAL_OK) { Error_Handler(); } pTimerCfg.DelayedProtectionMode = HRTIM_TIMER_D_E_DELAYEDPROTECTION_DISABLED; if (HAL_HRTIM_WaveformTimerConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_D, &pTimerCfg) != HAL_OK) { Error_Handler(); } pCompareCfg.CompareValue = 5312; if (HAL_HRTIM_WaveformCompareConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_A, HRTIM_COMPAREUNIT_1, &pCompareCfg) != HAL_OK) { Error_Handler(); } pOutputCfg.Polarity = HRTIM_OUTPUTPOLARITY_HIGH; pOutputCfg.SetSource = HRTIM_OUTPUTSET_MASTERCMP1; pOutputCfg.ResetSource = HRTIM_OUTPUTRESET_TIMCMP1; pOutputCfg.IdleMode = HRTIM_OUTPUTIDLEMODE_NONE; pOutputCfg.IdleLevel = HRTIM_OUTPUTIDLELEVEL_INACTIVE; pOutputCfg.FaultLevel = HRTIM_OUTPUTFAULTLEVEL_NONE; pOutputCfg.ChopperModeEnable = HRTIM_OUTPUTCHOPPERMODE_DISABLED; pOutputCfg.BurstModeEntryDelayed = HRTIM_OUTPUTBURSTMODEENTRY_REGULAR; if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_A, HRTIM_OUTPUT_TA1, &pOutputCfg) != HAL_OK) { Error_Handler(); } pOutputCfg.SetSource = HRTIM_OUTPUTSET_MASTERCMP2; if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_B, HRTIM_OUTPUT_TB1, &pOutputCfg) != HAL_OK) { Error_Handler(); } pOutputCfg.SetSource = HRTIM_OUTPUTSET_MASTERCMP3; if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_C, HRTIM_OUTPUT_TC1, &pOutputCfg) != HAL_OK) { Error_Handler(); } pOutputCfg.SetSource = HRTIM_OUTPUTSET_MASTERCMP4; if (HAL_HRTIM_WaveformOutputConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_D, HRTIM_OUTPUT_TD1, &pOutputCfg) != HAL_OK) { Error_Handler(); } if (HAL_HRTIM_TimeBaseConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_B, &pTimeBaseCfg) != HAL_OK) { Error_Handler(); } if (HAL_HRTIM_WaveformTimerControl(&hhrtim1, HRTIM_TIMERINDEX_TIMER_B, &pTimerCtl) != HAL_OK) { Error_Handler(); } if (HAL_HRTIM_WaveformCompareConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_B, HRTIM_COMPAREUNIT_1, &pCompareCfg) != HAL_OK) { Error_Handler(); } if (HAL_HRTIM_TimeBaseConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_C, &pTimeBaseCfg) != HAL_OK) { Error_Handler(); } if (HAL_HRTIM_WaveformTimerControl(&hhrtim1, HRTIM_TIMERINDEX_TIMER_C, &pTimerCtl) != HAL_OK) { Error_Handler(); } if (HAL_HRTIM_WaveformCompareConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_C, HRTIM_COMPAREUNIT_1, &pCompareCfg) != HAL_OK) { Error_Handler(); } if (HAL_HRTIM_TimeBaseConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_D, &pTimeBaseCfg) != HAL_OK) { Error_Handler(); } if (HAL_HRTIM_WaveformTimerControl(&hhrtim1, HRTIM_TIMERINDEX_TIMER_D, &pTimerCtl) != HAL_OK) { Error_Handler(); } if (HAL_HRTIM_WaveformCompareConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_D, HRTIM_COMPAREUNIT_1, &pCompareCfg) != HAL_OK) { Error_Handler(); } / USER CODE BEGIN HRTIM1_Init 2 / / USER CODE END HRTIM1_Init 2 / HAL_HRTIM_MspPostInit(&hhrtim1); } 这是cube生成的HRTIM_INIT()，每一路的输出需要HAL_HRTIM_TimeBaseConfig、HAL_HRTIM_WaveformTimerControl、HAL_HRTIM_WaveformCompareConfig三个函数，仔细发现函数中的TA1的顺序和其他的不一样的，只需要将后面TB1\TC1\TD1的这三个函数位置移到TA1的后面就可以了。我的cube版本是6.15.0后续版本不知道有没有这个问题。 |
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更改后的函数大概这样