How is the best configuration for setting MTF as free-running timer ?
void MFT_Configuration()
{
MFT_InitType timer_init;
NVIC_InitType NVIC_InitStructure;
SysCtrl_PeripheralClockCmd(CLOCK_PERIPH_MTFX1, ENABLE);
/* Init MFT1 in mode 2 */
timer_init.MFT_Clock1 = MFT_PRESCALED_CLK;
timer_init.MFT_Clock2 = MFT_NO_CLK;
timer_init.MFT_Mode = MFT_MODE_2;
timer_init.MFT_CRA = 0xFFFF;
timer_init.MFT_CRB = 0xFFFF;
/* If a square waveform is @ input with a frequency of 10kHz => T = 100 us
*
* with Prescaler = 16 - 1; => 1us sampling period
* the counter number within a period is 100.
*
* with Prescaler = 1 - 1; => 62.5ns sampling period
* the counter number within a period is 16000. More resolution.
*/
timer_init.MFT_Prescaler = 1-1;
MFT_Init(MFT1, &timer_init);
/* Set the TnCNT1 at the max value. No matter about the TnCNT2 since it is not used. */
MFT_SetCounter(MFT1, 0xFFFF, 0xFFFF);
/* Enable MFT irq */
NVIC_InitStructure.NVIC_IRQChannel = MFT1A_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = LOW_PRIORITY;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
Thank
