Dear support Team,
I'm trying to use my FlexTimer module on DevBoard RevB (S32K144).
I also have the datasheet from Aug. 2015 and the new one from Aug. 2016.
I work with the IAR IDE, using the IAR library and a J-LINK Debugger.
Is the FTM module able to work on my board (RevB)?
Or should I wait for the new board (from 2016)?
Or did I missed one or more configurations in my Code?
Note (from datasheet aug. 2015), page 801:
The Global Load mechanism of FTM module is not supported on this device.
It seems to approximately work when trying to Flash Code after several times and using:
• SOSC at 8MHz
• SPLL at 32MHz, that is also the System clock source (SYSclk/COREclk/BUSclk/SLOWclk set to 32MHz)
• SIRC / FIRC are disable
• FTM[0..3] clock source is SOSC_DIV1 (8MHz)
• PIN PTD15 / PTB5 set on Alteration2 to use FTM0_CH0 and FTM0_CH5 (same FTM0 Signal on this two PINs / channels)
• Need to generate a 4MHz PWM with Alpha, duty cycle = 50%
My Code (only for FTM):
Following the datasheet 2016 advice (page 1086) for my configuration. Uncalled Registers are set as Default.
int main (void)
/* Needs to set MOD to get only one incrementation */
FTM0_MOD |= FTM_MOD_MOD(0x0001u);
/* Needs to set Channels MODES to edge-aligned PWM */
FTM0_C0SC |= FTM_C0SC_MSB(1u);
FTM0_C0SC |= FTM_C0SC_ELSA(1u);
FTM0_C5SC |= FTM_C5SC_MSB(1u);
FTM0_C5SC |= FTM_C5SC_ELSA(1u);
/* Needs to set CnV to get flag when Counter value is 1 */
FTM0_C0V |= FTM_C0V_VAL(0x0001u);
FTM0_C5V |= FTM_C5V_VAL(0x0001u);
/* Others configurations... */
FTM0_CNT |= FTM_CNT_COUNT(0x0000u);
FTM0_SC |= FTM_SC_CLKS(3u);
FTM0_SYNC |= FTM_SYNC_SYNCHOM(1u);
FTM0_SYNCONF |= FTM_SYNCONF_SWOM(1u);
FTM0_SYNCONF |= FTM_SYNCONF_SWRSTCNT(1u);
FTM0_SYNCONF |= FTM_SYNCONF_SYNCMODE(1u) ;
/* Enable FTM0_CH0 and FTM0_cH5 */
FTM0_OUTMASK |= FTM_OUTMASK_CH7OM(1u);
FTM0_OUTMASK |= FTM_OUTMASK_CH6OM(1u);
FTM0_OUTMASK |= FTM_OUTMASK_CH5OM(0u);
FTM0_OUTMASK |= FTM_OUTMASK_CH4OM(1u);
FTM0_OUTMASK |= FTM_OUTMASK_CH3OM(1u);
FTM0_OUTMASK |= FTM_OUTMASK_CH2OM(1u);
FTM0_OUTMASK |= FTM_OUTMASK_CH1OM(1u);
FTM0_OUTMASK |= FTM_OUTMASK_CH0OM(0u);
/* Active matching channels */
FTM0_SYNC |= FTM_SYNC_SWSYNC(1u);
FTM0_SC |= FTM_SC_PWMEN0(1u);
FTM0_SC |= FTM_SC_PWMEN5(1u);