When I use FTM PWM driver application resets

josephgundel — Fri, 12 Jun 2015 19:14:51 GMT

When I use the FTM PWM Hal Drivers my application resets.

I am using a K02.

I call a hardware init function which sets the pins

void configure_ftm_pins(uint32_t instance)

{

switch(instance)

{

case 0: /*FTM0_CH0,1,4,5*/

PORT_HAL_SetMuxMode(PORTD_BASE,0u,kPortMuxAlt4);

PORT_HAL_SetMuxMode(PORTD_BASE,1u,kPortMuxAlt4);

PORT_HAL_SetMuxMode(PORTD_BASE,4u,kPortMuxAlt4);

PORT_HAL_SetMuxMode(PORTD_BASE,5u,kPortMuxAlt4);

break;

default:

break;

}

I then I do the following.

ftm_pwm_param_t ftmParam = {

.mode = kFtmEdgeAlignedPWM,

.edgeMode = kFtmLowTrue,

.uFrequencyHZ = 240000,

.uDutyCyclePercent = 0,

.uFirstEdgeDelayPercent = 0,

};

ftm_user_config_t ftmInfo;

memset(&ftmInfo, 0, sizeof(ftmInfo));

ftmInfo.syncMethod = kFtmUseSoftwareTrig;

FTM_DRV_Init(FTM_INSTANCE, &ftmInfo);

FTM_DRV_PwmStart(FTM_INSTANCE, &ftmParam, 0);

// Issue a software trigger to update registers

FTM_HAL_SetSoftwareTriggerCmd(g_ftmBaseAddr[FTM_INSTANCE], true);

My App imediately goes into reset.

Am I forgeting anything.

Re: When I use FTM PWM driver application resets

EarlOrlando — Mon, 15 Jun 2015 17:32:29 GMT

Hi Joseph,

I recommend to follow one example provided by KSDK (C:\Freescale\KSDK_1.2.0\examples\twrk64f120m\driver_examples\ftm) where is needed to set the clock too.

Regards,

Earl.

Re: When I use FTM PWM driver application resets

josephgundel — Mon, 15 Jun 2015 18:07:25 GMT

Turns out I had the pin MUX set incorrectly.

All working now. Thanks

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When I use FTM PWM driver application resets

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Re: When I use FTM PWM driver application resets