bdl99
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Re: Navi safety override?

Fri Apr 06, 2012 7:59 am

TonyWilliams wrote:
bdl99 wrote:Regarding the Nag screen, does the enter button on the steering wheel (or any other buttons) not get rid of the nag screen? That would be a lot easier to simulate and minimize the amount of dis-assembly required. I know that approach works on other Nissan's but not checked the leaf.


No, it doesn't match my Infiniti G37, where I can use my left thumb on the wheel to press enter. The LEAF's Clarion A/V uses an older version of the Microsoft firmware. Maybe that saved Nissan $2 per install?

There are currently two methods to handle the nag screen; physically press the button on the screen, or press any other button to ignore it. Or do nothing, I guess.


When you say "or press any other button to ignore it" is that is any of the physical buttons regarding the AV unit like "Map", "Menu", "Status" but not the volume buttons?

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TonyWilliams
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Re: Navi safety override?

Fri Apr 06, 2012 8:03 am

bdl99 wrote:When you say "or press any other button to ignore it" is that is any of the physical buttons regarding the AV unit like "Map", "Menu", "Status" but not the volume buttons?


Yes.

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garygid
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Re: Navi safety override?

Fri Apr 06, 2012 8:20 am

Easy to get the Warning off with a "Reject".
Getting it off with an "Accept" was the more difficult task.
See SOC/GID-Meter and CAN-Do Info
2011 LEAF, sold in 2015
2010 Prius, 2014 silver Tesla S
Nissan EVSE, mod to 240/120v 16A
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
To Sell: X-treme 5000Li EV motorcycle

bdl99
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Re: Navi safety override?

Fri Apr 06, 2012 8:23 am

garygid wrote:Easy to get the Warning off with a "Reject".
Getting it off with an "Accept" was the more difficult task.


Aha, thanks. So the only way to "Accept" is to press the screen or simulate pressing the screen?

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garygid
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Re: Navi safety override?

Fri Apr 06, 2012 8:39 am

Driving under about 4 mph, the menus are enabled. So, I drove 3 mph and the car-location on the map still updates.

So, trying a pulse-generator (or pulse blocker), would seem to be a reasonable experiment.

Usually, the typical GPS receiver chip generates new position information once a second. Some GPS receivers can do it 10 times a second.

The car probably updates the calculated position "continuously" with the car-sensor data (steering turn and wheel rotation), but it is probably only used
1. if the GPS position seems erratic, or
2. when there is no GPS, or
3. perhaps it is used until the GPS consistantly indicates a different location??

In normal operation, the LEAF's Nav seems to update the map/position very well, about every half-second, as I recall.
See SOC/GID-Meter and CAN-Do Info
2011 LEAF, sold in 2015
2010 Prius, 2014 silver Tesla S
Nissan EVSE, mod to 240/120v 16A
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
To Sell: X-treme 5000Li EV motorcycle

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garygid
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Re: Navi safety override?

Fri Apr 06, 2012 8:43 am

I assume Ingineer is saying that he found a (difficult) way to do the difficult ("Accept") task.

He already had a simple way to do the easy ("Reject") task, as I recall.
See SOC/GID-Meter and CAN-Do Info
2011 LEAF, sold in 2015
2010 Prius, 2014 silver Tesla S
Nissan EVSE, mod to 240/120v 16A
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
To Sell: X-treme 5000Li EV motorcycle

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Ingineer
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Re: Navi safety override?

Fri Apr 06, 2012 9:05 am

Yes, Gary is correct. I think I've figured out a neat and elegant way for this all to work.

Basically, you watch the screen for a touch event, and if so, you buffer the speed pulses, and begin allowing them out, but at a throttled rate. Then after a certain timeout, the throttling is removed. So anytime you touch the screen, the lockout is temporarily removed, the touch is processed, and you have a few seconds to continue selecting things. Meanwhile, the position might accumulate some error, but at least the system will still indicate progress and update via GPS. And if your average speed is still pretty low, such as driving in the city with stop/go traffic, the system will "catch up" even if you continue to touch the screen, and if you are driving fast, while continuing to touch, the error will eventually be corrected by GPS.

Of course, this same system automatically presses "ok" for you upon startup.

Gary, it looks like they will update the position once the error is over a certain threshold.

Yes, I can make the nag go away via the Nav CAN bus, but that effectively denies the agreement. This new method Ok's it.

-Phil
Easily Learn Electricity HERE! - - - - Website: http://evseupgrade.com/ - - - - Like us on Facebook: EVSE Upgrade

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Ingineer
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Re: Navi safety override?

Fri Apr 06, 2012 9:07 am

Are there any other "hacks" I should build into this?

-Phil
Easily Learn Electricity HERE! - - - - Website: http://evseupgrade.com/ - - - - Like us on Facebook: EVSE Upgrade

bdl99
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Re: Navi safety override?

Fri Apr 06, 2012 9:13 am

garygid wrote:I assume Ingineer is saying that he found a (difficult) way to do the difficult ("Accept") task.

He already had a simple way to do the easy ("Reject") task, as I recall.


Yes, the "difficult" piece is really the effort required to get to the required points. My interest is in finding solutions that are simple to install even if that means the solution may be more difficult. I've not really played with the Nag screen overrides in a while because currently I don't have that issue so apologies if I'm going over old ground.

bdl99
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Re: Navi safety override?

Fri Apr 06, 2012 9:15 am

garygid wrote:Driving under about 4 mph, the menus are enabled. So, I drove 3 mph and the car-location on the map still updates.

So, trying a pulse-generator (or pulse blocker), would seem to be a reasonable experiment.


Great, thanks for trying that and reporting back.

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