Tivaware analog comparator configure suggests only one reference input Comp0+.

BP101 said:

seems strait forward

Magellan - sailing his "strait" - found such water passage not so straight forward!

On the tech front - there are "known methods" to "peak detect" the outputs of 3 current (or other) sensors - and feed that "peak" signal into a single, ANALOG Comparator.

(thus escaping the need for three...)

Recall that not all decisions are "strictly" tech-based. My small firm is a bit ahead of yours - we've had to "blend" from multiple choices involving Sales, Legal, Production, Finance & Tech. As you enter the "real-world" market - I'd not be too surprised - if your advisors will suggest very much as Robert/I have outlined.

It is immensely difficult for "Lone Ranger" to, "Know and Do" ALL!    Even though - and especially as - I've been to Engineering & Law school - I regularly consult w/more skilled/practiced/focused others - so that we have the best chance of, "getting things right."   Mistakes and "unchecked hopes/beliefs" prove COSTLY!

How does that have anything to do with suggested system redundancy. Perhaps you have been following ridiculous (human) regulations for so long your best judgment has been compromised, when perhaps you should challenge them to consider all the scenarios.... Such regulations and rulings could end in life threating situations or drawn out law suites.

GM is currently fighting 100's of law suites from ignition switch failures. Such electronics lacked redundancy and killed people as a result. Pass key III ignition switches randomly turning to the off position killed several people. The new dumb ass CEO went in front of senate hearing committee lied through her teeth she knew little to nothing about that - she was after all the new CEO. Engineers had been filling reports for over a year about key failures.

I have such a failed key cylinder removed '04 Chevy classic Malibu. The key can as reported in the recall randomly switch off shutting off the engine. The driver trying desperately can not rotate the key back to the on position (EVER again) as it is a defective lock cylinder also a misdiagnosed issue by GM. The Hall sensor module in the pass III key lock mechanism detects the transponder embedded in the key but can not override the BCM. This case the odometer output from the PCM can't tell the BCM the vehicle is still moving as the pass key III system has no built in redundancy. In fact a person can not put the vehicle back into drive if they panic and shift it into park being a cable connects into the back of the ignition switch, antitheft when the shifter is in Park. There is no excuse for that (what if) scenario being skirted over or ignored. Long story short we struggled just to get the vehicle onto tow truck, in my genius popped the shift cable off the transaxle under the hood and manually shifted to neutral. My daughters car, first born and man you can bet that would put me over the edge had she been a fatality victim of misinformed regulators. Purchased the car 2 days before that occurred and had no idea this was an issue other than dealer stated there was a recall. The dealer only adds inserts to the elongated key slot - that's it.  How pathetic!

BP101 said:

100's of law suites

That would be, "suits."

BP101 said:

How does that have anything to do with suggested system redundancy. Perhaps you have been following ridiculous (human) regulations for so long your best judgment has been compromised, when perhaps you should challenge them to consider all the scenarios.... Such regulations and rulings could end in life threating situations or drawn out law suites.

Being able to SELL into the "reasonable" market suggest that compliance w/normal/customary Agency requirements has EVERYTHING TO DO w/business success...  

I'd saddle - then mount my trusty steed - and charge the nearest windmill ... prior to following your direction to "challenge them!"

Someday - as and "if" you actually "go to market" - your attitude will (most likely) change!   [cb1 departs this "dead horse."]

Hi Amit,

>My question: What is the configuration you want. Independent reference or Common reference Pin?

My posted reply to you is MIA - it was here the other day now it is gone? Responded to your question in the above post. Desire independent external C0+,C1+,C2+ but you never answered that with the PinMux Tool reply. At least currently that is the way the PCB is configured for 3 sets of external resistor dividers to set the +Vref into each external analog comparator input C0+,C1+,C2+.  

Thank you!

Hi Amit,

The desktop version  downloaded from the link to the post does not have the Tm4c1294NCPDT in the package installer.

Seems the assignment for external (Cn+) pins are default 0x0 (Normal) ASRCP bits all 3  control registers. We can use comparator 0 (C0+ PIN0)input assigned as a single external reference or use the default (comp_output_normal 0x0) for all 3.

Fig 22-1 shows the (C0+) input side of Mux tie on the outside of the ANLGCMPBLK tied to alternate. Fig 22-2 shows the same tie (C0+) tied to the alternate (1) on the output of the very same Mux tie. Seem to recall grasping that back some time ago. The little tiny black dot inside yellow square.