Hi, I am using MCUXpresso IDE and FRDM-K64F board.
I am trying to configure four PWM channels using FTM0 at a frequency of 50hz. My definitions are the following:
#define FTM_SOURCE_CLOCK CLOCK_GetFreq(kCLOCK_McgFixedFreqClk)
#define FTM_MODULE FTM0
#define PWM_CH0 0U
#define PWM_CH1 1U
#define PWM_CH2 2U
#define PWM_CH3 3U
And my configuration code is the following:
ftm_config_t ftmInfo;
ftm_chnl_pwm_signal_param_t ftmParam[4];
ftmParam[0].chnlNumber = (ftm_chnl_t)PWM_CH0;
ftmParam[0].level = kFTM_HighTrue;
ftmParam[0].dutyCyclePercent = 5U;
ftmParam[0].firstEdgeDelayPercent = 0U;
ftmParam[1].chnlNumber = (ftm_chnl_t)PWM_CH1;
ftmParam[1].level = kFTM_HighTrue;
ftmParam[1].dutyCyclePercent = 5U;
ftmParam[1].firstEdgeDelayPercent = 0U;
ftmParam[2].chnlNumber = (ftm_chnl_t)PWM_CH2;
ftmParam[2].level = kFTM_HighTrue;
ftmParam[2].dutyCyclePercent = 5U;
ftmParam[2].firstEdgeDelayPercent = 0U;
ftmParam[3].chnlNumber = (ftm_chnl_t)PWM_CH3;
ftmParam[3].level = kFTM_HighTrue;
ftmParam[3].dutyCyclePercent = 5U;
ftmParam[3].firstEdgeDelayPercent = 0U;
FTM_GetDefaultConfig(&ftmInfo);
FTM_Init(FTM_MODULE, &ftmInfo);
FTM_SetupPwm(FTM_MODULE, ftmParam, 4U, kFTM_EdgeAlignedPwm, 50U, FTM_SOURCE_CLOCK);
FTM_StartTimer(FTM_MODULE, kFTM_FixedClock);
My problem is that the definition FTM_SOURCE_CLOCK is equal to 32552, but looking at my clock settings, the value of FTM_SOURCE_CLOCK should be 390625.
Below, is my clocks configurations. Can you help me with this problem?
Thanks.
Hello Leandro Fabián Rocco ,
I test on my side, configure the MCGFFCLK to 390.625KHZ, then get the freq using:
CLOCK_GetFreq(kCLOCK_McgFixedFreqClk);
the result is the same with Config tool:
You can send your project to me, I will help to check it .
Hope it helps,
Have a great day,
TIC
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