NetBurner Community Forum

Hi guys,

I have to repeatedly create non-trivial(and not standard) sequence of pulses on 2 channels.
Main CPU(5234) will be busy by that time(collecting data from ADC and sending it thru Eth.), so I guess the only option is eTPU. Which, btw, seems to fit perfectly for this task.

But eTPU PWM functions will not work for me. And I can't toggle eTPU channels as GPIO - have no time for it in main program.
Implement my own function? Without any experience with eTPU... sounds scary.


So, I guess, I'm looking for tips where to start ?

Regards.

P.S. Sequence is:
Pulse 10-100uS long(predefined by user), wait for time predefined by user(usually 20-100uS), and then more pulses with width and duty cycle predefined by user. On second channel something similar, but with different settings.

I'm guessing you've seen the eTPU app notes and demo files at http://www.netburner.com/products/core_ ... d5234.html

Look also at the QOM, the Queued Output Module:
http://www.freescale.com/files/online_t ... U/QOM.html.
http://www.freescale.com/files/32bit/do ... AN2857.pdf

This module is part of the NNDK_etp_set.h
See C:\Nburn\MOD5234\include\ETPU\functions_API\etpu_qom.h for usage details.

H-ha!

This is exactly what I need. I can't believe I overlooked it !

Thank you! =)