Hi i am trying to capture rising edge with a flextimer. I wont to calculate the time from one rising edge to the next one. I am trying in this way:
unsigned int irPort;
irPort = _READ_PORT_MASK(C, PORTC_BIT6);
//Enable the Clock to the FTM0 Module
SIM_SCGC6 |= SIM_SCGC6_FTM0;
FTM0_SC |= FTM_SC_PS_1; // clock prescaler / 1
//turn off FTM write protection;
FTM0_MODE |= FTM_MODE_WPDIS;
FTM0_MODE |= FTM_MODE_FTMEN;
FTM0_SC = 0x0;
FTM0_SC = 0; //Make sure its Off!
FTM0_CNT = 0; //Reset counter, make sure we are starting at 0
FTM0_MOD = (FTM_CSC_ELSA | FTM_CSC_ELSB); //Set the overflow rate
//FTM0_MOD = IRQ_RISING_EDGE;
FTM0_SC |= FTM_SC_TOIE; //Enable the interrupt mask.
FTM0_SC |= FTM_SC_CLKS_SYS; //Select the System Clock
fnDebugMsg("Timer is running, with value: ");
I dosen´t seems to work, i just geth the value 12 the hole time. Someone now whats maybe is wrong ?