CCS/TMS320F28335: TMS320F28335

Hanitha,

when you say:

Hanitha Kabilan said:

am working on the 8335 board for getting an Pulse output

Do you you want a random single pulse or do you want reoccurring periodic pulses?

The PWM module is best for creating periodic pulses, if you need an occasional random pulse it might be better to use a GPIO.

Hanitha Kabilan said:

I would like to know where the carrier and reference signals are compared and the pulse is produced

If I understand you correctly, you are looking for the Time-Base sub-module. This allows you to define a few different triangular waveforms from which actions can be taken. What these actions do is configured in the Counter-Compare and the Action-Qualifier sub-modules.

However, if you would like the full details they are described in the ePWM Reference Guide.

Hanitha Kabilan said:

from where the carrier and reference signals can be seen on the scope ?

There are an number of pins that connect the the ePWMs, a full list of the GPIO muxing can be found in the Datasheet under Table4-1 "Signal Descriptions".

Hanitha Kabilan said:

which program is recommended for getting the PWM with the required frequency ?

Are you asking for example software? This can be found in C2000Ware, specifically (C:\ti\c2000\C2000Ware_1_00_05_00\device_support\f2833x\examples) there are a number of examples that are related to the PWM module in this folder, they all start with the prefix "ePWM".

On a side note, the eCAP module is also capable of generating simple PWM outputs, but it is not full featured like the ePWM module.

Regards,
Cody