TMS320F280049C: CMPSS Ramp generator:

Hello Jainam,

Thank you for your patience.

In the examples, you need to modify two functions CMPSS_configDAC() and CMPSS_configRamp() in your board.c files to use the ramp generator. Please use the following lines for your code.

CMPSS_configDAC (myCMPSS0_BASE,( CMPSS_DACVAL_PWMSYNC| CMPSS_DACREF_VDDA | CMPSS_DACSRC_RAMP));

Also, for configuring the function CMPSS_configRamp use the following explaination:

Configures the comparator subsystem's ramp generator.

//!

//! \param base is the base address of the comparator module.

//! \param maxRampVal is the ramp maximum reference value.

//! \param decrementVal value is the ramp decrement value.

//! \param delayVal is the ramp delay value.

//! \param pwmSyncSrc is the number of the PWMSYNC source.

//! \param useRampValShdw indicates if the max ramp shadow should be used.

//!

//! This function configures many of the main settings of the comparator

//! subsystem's ramp generator. The \e maxRampVal parameter should be passed

//! the ramp maximum reference value that will be loaded into the ramp

//! generator. The \e decrementVal parameter should be passed the decrement

//! value that will be subtracted from the ramp generator on each system clock

//! cycle. The \e delayVal parameter should be passed the 13-bit number of

//! system clock cycles the ramp generator should delay before beginning to

//! decrement the ramp generator after a PWMSYNC signal is received.

//!

//! These three values may be be set individually using the

//! CMPSS_setMaxRampValue(), CMPSS_setRampDecValue(), and

//! CMPSS_setRampDelayValue() APIs.

//!

//! The number of the PWMSYNC signal to be used to reset the ramp generator

//! should be specified by passing it into the \e pwmSyncSrc parameter. For

//! instance, passing a 2 into \e pwmSyncSrc will select PWMSYNC2.

//!

//! To indicate whether the ramp generator should reset with the value from the

//! ramp max reference value shadow register or with the latched ramp max

//! reference value, use the \e useRampValShdw parameter. Passing it \b true

//! will result in the latched value being bypassed. The ramp generator will be

//! loaded right from the shadow register. A value of \b false will load the

//! ramp generator from the latched value.

//!

//! \return None.

//

//*****************************************************************************

extern void

CMPSS_configRamp(uint32_t base, uint16_t maxRampVal, uint16_t decrementVal,

                 uint16_t delayVal, uint16_t pwmSyncSrc, bool useRampValShdw);

Regards,

Hadi