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Automotive
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In addition to ignition, power and monitoring gauges and lights, today's motor vehicles feature computerized engines, transmissions and braking systems, electronic mapping systems, Bluetooth and Internet connectivity, sensors that detect other vehicles, motorized seats, and digital audio and video systems; several manufacturers are producing electric and hybrid automobiles and self-driving cars.
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I'm programming Infineon TC29x Aurix Tricore Microcontroller based embedded system in 'C' language.
Consider stack starting address 0x5000 0000. The stack size is 0x2000.
If I take current stack pointer minus 0x2000, will that create stack exception? If yes, what might be 'C' or assembly language code that will achieve this?
My thought is if I subtract negative 0x2000 from current stack pointer or add 0x2000 to current stack pointer, I'll be outside stack and stack exception will occur ?
I need to set program counter to illegal address, i.e. 0x00FF FFFC. Can this be done with assembly language instructions?
If yes, please instrument assembly language instruction that would set program counter to 0x00FF FFFC while code is running.
Consider stack starting address 0x5000 0000. The stack size is 0x2000.
If I take current stack pointer minus 0x2000, will that create stack exception? If yes, what might be 'C' or assembly language code that will achieve this?
My thought is if I subtract negative 0x2000 from current stack pointer or add 0x2000 to current stack pointer, I'll be outside stack and stack exception will occur ?
I need to set program counter to illegal address, i.e. 0x00FF FFFC. Can this be done with assembly language instructions?
If yes, please instrument assembly language instruction that would set program counter to 0x00FF FFFC while code is running.
4 Comments
I'm trying to create illegal instruction reset.
I'm programming Infineon TC29x Aurix Tricore Microcontroller based embedded system in 'C' language.
I need to set program counter to illegal address, i.e. 0x00FF FFFC. Can this be done with assembly language instructions?
If yes, please instrument assembly language instruction that would set program counter to 0x00FF FFFC while code is running.
I'm programming Infineon TC29x Aurix Tricore Microcontroller based embedded system in 'C' language.
I need to set program counter to illegal address, i.e. 0x00FF FFFC. Can this be done with assembly language instructions?
If yes, please instrument assembly language instruction that would set program counter to 0x00FF FFFC while code is running.
Is it possible that I have some kind of spy camera around my shirt which also can pass me thru metal detector. And also send me the live stream video.
"Experts say that widespread hacks of cars may soon become a reality." In the very near future, I expect an extra upsell for a top of the line security package, in addition to the usual upsells, like leather or heated seats.
https://www.washingtonpost.com/news/the-switch/wp/2017/06/01/how-hacked-computer-code-allegedly-helped-biker-gang-steal-150-jeeps/?utm_term=.a1cc284aae86
https://www.washingtonpost.com/news/the-switch/wp/2017/06/01/how-hacked-computer-code-allegedly-helped-biker-gang-steal-150-jeeps/?utm_term=.a1cc284aae86
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Intriguing... When it comes to handling security issues like the one described in the article, it sounds like the automaker either had a breach of their key code database and/or a bad process for authenticating duplicate key requests. I'd say the automaker should deal with fixing those sorts of issues just like they would a safety recall. A certain baseline of security is to be expected. Like, if there was a mistake in an old-style non-electronic key that meant the same key would work in all cars of that model... You'd better believe we'd expect the automaker to cover that cost of fixing it.
But just like a car alarm can be a security upsell, I could easily envision new high-tech security add-ons to help against potential theft. Like maybe a car that would text you if it was taken for a drive at a time you don't usually drive it?
But just like a car alarm can be a security upsell, I could easily envision new high-tech security add-ons to help against potential theft. Like maybe a car that would text you if it was taken for a drive at a time you don't usually drive it?
We are using TC29x Microcontroller. The flash size is 6Mbytes. There are Three banks, 2Mbyte each.
Program Flash 0 (PF0) is bank 1. Program Flash 1 (PF1) is bank 2. Program Flash 2 (PF2) is bank 3.
PF0 address range is: 0x8000 0000 - 0x801F FFFF
PF1 address range is: 0x8020 0000 - 0x803F FFFF
PF2 address range is: 0x8040 0000 - 0x805F FFFF
Where is Program Flash ECC stored. Is it within 6Mbyte ? Or is there additional storage space for ECC that we don't have access to ?
How does Flash ECC work ? For how many bytes of data, how many bytes of ECC are there ? Whenever we write to flash, ECC updates? When we erase flash ECC updates?
How is it possible to create Flash ECC Error ? Because everytime you write or erase flash, ECC will update?
Program Flash 0 (PF0) is bank 1. Program Flash 1 (PF1) is bank 2. Program Flash 2 (PF2) is bank 3.
PF0 address range is: 0x8000 0000 - 0x801F FFFF
PF1 address range is: 0x8020 0000 - 0x803F FFFF
PF2 address range is: 0x8040 0000 - 0x805F FFFF
Where is Program Flash ECC stored. Is it within 6Mbyte ? Or is there additional storage space for ECC that we don't have access to ?
How does Flash ECC work ? For how many bytes of data, how many bytes of ECC are there ? Whenever we write to flash, ECC updates? When we erase flash ECC updates?
How is it possible to create Flash ECC Error ? Because everytime you write or erase flash, ECC will update?
Attached is data dump of some example symbol "ast". This symbol starts at address 0x0000 6814.
What is oriented display and what is line break at 2 power x ?
Orient-Display.PNG
What is oriented display and what is line break at 2 power x ?
Orient-Display.PNG
hi Folks
i have been stuck on this issue for days and found no clue to fix it.
the navigation unit of my Toyota Prius makes some kind of clicking noise when it is powered on, finally i have figured out that the noise is related to its maps DVD. once the DVD disc is removed, the noise disappears. initially i thought it was caused by an aged DVD disc as the disc was used in the unit for years. i thought a new backup disc could fix the issue, but I was wrong.
now, all DVD discs can't be recognised by the navigation unit, whatever they are original copy, or burned backup discs in DVD -R, +R or RW, speed 1x or 16x, the same message keeps showing on the unit's screen. all discs can be loaded, but nothing works at all.
how can i fix the issue?
the car is out of manufacturer warranty, i am thinking if it is feasible to remove the navigation unit and clean it myself. If yes, how?
thanks heaps in advance,
bbao
i have been stuck on this issue for days and found no clue to fix it.
the navigation unit of my Toyota Prius makes some kind of clicking noise when it is powered on, finally i have figured out that the noise is related to its maps DVD. once the DVD disc is removed, the noise disappears. initially i thought it was caused by an aged DVD disc as the disc was used in the unit for years. i thought a new backup disc could fix the issue, but I was wrong.
now, all DVD discs can't be recognised by the navigation unit, whatever they are original copy, or burned backup discs in DVD -R, +R or RW, speed 1x or 16x, the same message keeps showing on the unit's screen. all discs can be loaded, but nothing works at all.
how can i fix the issue?
the car is out of manufacturer warranty, i am thinking if it is feasible to remove the navigation unit and clean it myself. If yes, how?
thanks heaps in advance,
bbao
I am looking for a camera which I can use to watch vehicles running behind mine. I have a rear view camera pre installed. But it only works when I drive reverse. I have 2016 RAM 1500 5.7 L V8. Also easy to installed.
I've put in a brand new starter on my 2005 GMC Sierra because it was clicking. After I did that the clicker no stopped but now the truck still won't crank. So I changed the ignition switch after carefully checking all the fuses and relay and it still does the same thing. Found a wire that was never connected to the battery and traced back to the starter so I connected it to the battery and the starter started engaging but the ignition was off so I turned the ignition on and touched the battery with wire and engine turned over but starter wouldn't disengage. I've traced all the wires to see if anything was wrong and they all look good. What else am I missing?
hi i need help, i have a mitsubishui 2001 space star the rear passenger door behind drivers seat wont open using the handle outside, and my daughter has stupidly put the child lock on so now i cant open it at all, any advise that could help me is greatly appreciated thank you
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Hello Guys I hope you can help me I am in Mexico, I've taken my car to the service center and they don't seem to know how to fix the problem.
It could happen that the car will not start, so I go pop the hood and push all the fuses near the battery and go back to turn it on and it starts up with out a problem. Then the small motor symbol appears.
There are cases where it starts perfectly and the motor symbol is off, when I am driving all of the sudden it loses power (CHECK ENGINLIGH TURNS ON)it doesn't fully turn of the car keeps going., but its kind of scary when your driving in middle of traffic. So when I hit a bump or something it does this.
I can be driving in the express way where there are no bumps and it still dose it.
Have you guys experienced something like this if so have you found away to solve it?
I hope you can help me cause this is driving me nuts.
Thank you
Jose
It could happen that the car will not start, so I go pop the hood and push all the fuses near the battery and go back to turn it on and it starts up with out a problem. Then the small motor symbol appears.
There are cases where it starts perfectly and the motor symbol is off, when I am driving all of the sudden it loses power (CHECK ENGINLIGH TURNS ON)it doesn't fully turn of the car keeps going., but its kind of scary when your driving in middle of traffic. So when I hit a bump or something it does this.
I can be driving in the express way where there are no bumps and it still dose it.
Have you guys experienced something like this if so have you found away to solve it?
I hope you can help me cause this is driving me nuts.
Thank you
Jose
Consider a typical Automotive Embedded Software System.
A discrete input signal is 0 or 1. An example of discrete input is ignition ON or OFF.
After discrete input signal is debounced or a state change is latched, is discrete input signal still raw value?
Second question: Should Electronic Control Unit (ECU) low level software debounce discrete inputs or just read the real time state of discrete input? Are there any exceptions meaning some discrete inputs should be debounced, whereas others don't need to be debounced?
A discrete input signal is 0 or 1. An example of discrete input is ignition ON or OFF.
After discrete input signal is debounced or a state change is latched, is discrete input signal still raw value?
Second question: Should Electronic Control Unit (ECU) low level software debounce discrete inputs or just read the real time state of discrete input? Are there any exceptions meaning some discrete inputs should be debounced, whereas others don't need to be debounced?
I bought this vehicle zero miles 2 years ago. I put 27k miles on it. My question is can I change engine oil by myself? Is this will mess with the warranty?
This is my remote. I use rechargeable batteries and every day my remote shows low battery but when i test them, they all shows green. I bought batteries from dollar store and try them, they also die out in less than 3 days. They are AAA rechargeable batteries. I think something is wrong with my remote.
In a typical embedded automotive embedded system, I believe data is only transferred from RAM to EEPROM once every key cycle, right before embedded system goes to sleep ?
I have 2015 RAM 5.7 V8. Is it possible I can sleep on the back bed with something I can put easily on the top just in case if rain? I don't have that kind of money to buy extra camper to put on it. Some thing cheap I can use to sleep on it.
Can you please send me a link of any cheap gps for commercial vehicles?
My Honda Airwave was bought in 2008 & I heard it's assembled/made in Japan.
Would the following spark plug fit into it? Hope the Airwave is not country specific:
https://www.amazon.com/gp/product/B00IXBM1NC/ref=ox_sc_sfl_title_83?ie=UTF8&psc=1&smid=A3SJJYHRWE1WHQ
My car occasionally 'cough' while in D gear but not with lower gears & I tot
of swapping the spark plug to see if it helps
Would the following spark plug fit into it? Hope the Airwave is not country specific:
https://www.amazon.com/gp/product/B00IXBM1NC/ref=ox_sc_sfl_title_83?ie=UTF8&psc=1&smid=A3SJJYHRWE1WHQ
My car occasionally 'cough' while in D gear but not with lower gears & I tot
of swapping the spark plug to see if it helps
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Vehicle's A and B are stationary on level ground. Vehicle A is 12 inches from the rear bumper of vehicle B.
The driver of vehicle be unknowingly relaxes their foot on the brake pedal.
Formula to calculate the speed vehicle A was going when their front bumper hit the rear bumper of vehicle B which was over a distance of 12 inches.
The driver of vehicle be unknowingly relaxes their foot on the brake pedal.
Formula to calculate the speed vehicle A was going when their front bumper hit the rear bumper of vehicle B which was over a distance of 12 inches.
Hello,
I have a great deal of data in regards to automotive part fitment. each row contains a minimum year column and a maximum year column like this
min yr max yr make model sub engine
2001 2005 ford f150 crewcab v8
I need to convert it to
yr make model sub eng
2001 ford f150 crewcab v8
2002 ford f150 crewcab v8
2003 ford f150 crewcab v8
2004 ford f150 crewcab v8
2005 ford f150 crewcab v8
next vehicle would start here
I have 50k rows like this and am looking for a productive way to achieve this. I know I could separate out the rows, select blanks, populate downward from the cell above plus one but have no idea how to state this as a macro and make it not extremely manual and time consuming. I have attached a before and after sample.
All assistance is much appreciated.
ymmtest.xlsx
I have a great deal of data in regards to automotive part fitment. each row contains a minimum year column and a maximum year column like this
min yr max yr make model sub engine
2001 2005 ford f150 crewcab v8
I need to convert it to
yr make model sub eng
2001 ford f150 crewcab v8
2002 ford f150 crewcab v8
2003 ford f150 crewcab v8
2004 ford f150 crewcab v8
2005 ford f150 crewcab v8
next vehicle would start here
I have 50k rows like this and am looking for a productive way to achieve this. I know I could separate out the rows, select blanks, populate downward from the cell above plus one but have no idea how to state this as a macro and make it not extremely manual and time consuming. I have attached a before and after sample.
All assistance is much appreciated.
ymmtest.xlsx
Hello,
I'm wondering if anyone knows where I can find a PDF service manual for Hyundai Elantra 1996?
Cheers,
I'm wondering if anyone knows where I can find a PDF service manual for Hyundai Elantra 1996?
Cheers,
Is it possible to connect a standerd single din CD player and a digital media reciever in a vehicle using the two device's wireing harnesses wired into the vehicles wireing harness.
Anyone looking for a fun do-it-yourself project? This college student converted his Honda Civic into a self-driving car using a smartphone, freely available software, a 3D printed case, and circuit board he soldered himself. Fascinating stuff, but I'll be honest, it seems a bit dangerous and I wonder what sort of laws will be cropping up soon as a result of projects like this...
Then again, it's not like human drivers are particularly safe and perhaps even a hobbyist level self-driving modification would still be safer than your average person...
https://www.technologyreview.com/s/603637/how-a-college-kid-made-his-honda-civic-self-driving-for-700/
Then again, it's not like human drivers are particularly safe and perhaps even a hobbyist level self-driving modification would still be safer than your average person...
https://www.technologyreview.com/s/603637/how-a-college-kid-made-his-honda-civic-self-driving-for-700/
Automotive
1K
Solutions
3
Articles & Videos
1K
Contributors
In addition to ignition, power and monitoring gauges and lights, today's motor vehicles feature computerized engines, transmissions and braking systems, electronic mapping systems, Bluetooth and Internet connectivity, sensors that detect other vehicles, motorized seats, and digital audio and video systems; several manufacturers are producing electric and hybrid automobiles and self-driving cars.
