XGATE PIT based bit bang fuel injection

[jonr]

Sorry, I had seen this from Freescale and thought that C could be used on XGATE.

You can use all the usual development approaches including programming in C and using the internal memory on the MCU. In fact it is very simple to reuse previously written software on XGATE.

[Fred]

C can be used on XGATE with the codewarrior pile-of-shit development environment :-)

XGATE code MUST be small, so XGATE code is one of two exceptions to our "only in C" policy.

but the truth is with a respectable input pattern you are always scheduling off of an input event every cycle.

Exactly! Between one input event and the next, you get no new information, so there is no gain to be had in trying to count angle in between.

[jharvey]

I like the end of the test video, however it would have been better if he tossed in a bit of gas and a match

[SleepyKeys]

Film is cheap.

[Fred]

Film is cheap.

MegaSquirts aren't for what they are! :-p Sell it!

[SleepyKeys]

http://youtu.be/U9OEEOmsVHk

thx Fred the new cut is very nice

[Fred]

http://youtu.be/U9OEEOmsVHk

thx Fred the new cut is very nice

You're welcome! Thank you for filming it! :-)

[Fred]

This is higher priority than the target version indicates! I promise :-)

http://issues.freeems.org/view.php?id=255

[SleepyKeys]

Clarification as to some of the further requirements.

1. <fredcooke1> you need to determine that the intended start is before the current off, and if so, just move the off to a later time.
Q1. And that "later time" is just your desired time like any other parameter correct? Example turn off 30,000(our parameter after taking into account the input time stamp) ticks from now even though there are 5,000 ticks left in the current schedule?

2.<fredcooke1> in the case where the intended on is after the intended off, you need to layer the scheduling up one
<fredcooke1> which you say you have a solution for.
Q2. Yes I do, in which case you need to setup more event channels that just happen to share the same pin. Example event 0/1 share pin 2 on portB, do you see what I mean?

[Fred]

Q1, yes, correct.
Q2, yes, I do.

:-)

PS, good to see this on the forum.