Mitsubishi Montero Sudden Acceleration Accidents [MERGED]

[confused shoes]

Oo, bigyan mo ako ng test points ng ECG at ng manual nito. Ang doctor babasahin lang ECG output at i-correlate ito sa karamdaman ng pasyente, bigyan mo ng false data ang doctor, false rin interpretation nya. So pano naging expert doctor sa ECG? Expert lang sya gumamit, pero para alamin kung within calibration ito, wala na sya dyan pakialam at alam.

Tama kelangan mo ng test points. At kelangan mong malaman kung ano ang input at ano ang expected output.
Now lets go back to the SUA issue. Paano mo validate yung firmware ng ECU kung hindi mo alam ang input at wala kang expected output?

[vvti2.0]

Yes sir, firmware or program are the same, yung doctor d naman nag interprete ng firmware yung innterpet nya is the graphical reading ng ng ECG which is equivalent signal yan galing sa micro controller.

Mostly ng firmware are C++ program.

Nope, most of the firmwares are C based. Kailan na lang nag C++.

Nung una nga assembly language pa kami, kailangan mo pa bantayan ang stack mo kung mag interrupt ka.

Yang firmware na tinatawag, wala yan iba kundi ang compiled program na nilagay sa loob ng microcontroller.

Parang sarap pakingan, firmware. Program lang yan, pinasarap lang tawag.

[Junesp111]

Electronics is a very broad and flexible field, lalo na ang field na nakapasok sa programming na related sa instrumentation and control.

Sabi ko nga ulit, hindi rocket science ang ECU, mas complex pa ang algorithm ng hover board.

Ni hindi gumamit ng PID ang feedback system ng ECU.

Ang laman ng ECU matching type lang yan, wala yan clock cycle na ni allocate for intensive calculation, basic computations lang yan at nakaready na sa lookup table (map) ang ouput nya.

Agree comparing lang ng reading yan pag mis match yung reading show error code.

[Junesp111]

Nope, most of the firmwares are C based. Kailan na lang nag C++.

Nung una nga assembly language pa kami, kailangan mo pa bantayan ang stack mo kung mag interrupt ka.

Yang firmware na tinatawag, wala yan iba kundi ang compiled program na nilagay sa loob ng microcontroller.

Parang sarap pakingan, firmware. Program lang yan, pinasarap lang tawag.

other term Micro code

[confused shoes]

firmware or program are the same

They are not. A program may not be electronic. A firmware is electronic in nature.

[vvti2.0]

Tama kelangan mo ng test points. At kelangan mong malaman kung ano ang input at ano ang expected output.
Now lets go back to the SUA issue. Paano mo validate yung firmware ng ECU kung hindi mo alam ang input at wala kang expected output?

Sabi ko nga sayo, bigyan mo ako ng testpoints at ng manual. Lahat ng electronic components ay dumadaan sa characterization sa production line. Yang characterization program, based yan sa datasheet ng component mo, andyan ang absolute maximum ratings, expected sway ng output mo at certain temp and frequency etc..

Kalokohan ang tanung mo na magvalidate ka pero di mo alam ang basis ng validation mo.

[vvti2.0]

They are not. A program may not be electronic. A firmware is electronic in nature.

Nagpapatawa ka na naman. Tanungin nga kita, ano ang alam mo sa programming?

[Junesp111]

Tama kelangan mo ng test points. At kelangan mong malaman kung ano ang input at ano ang expected output.
Now lets go back to the SUA issue. Paano mo validate yung firmware ng ECU kung hindi mo alam ang input at wala kang expected output?

Tingan mo yung daigram, tingnan mo kung ano sensor nakakabit dyan, sa output naman tingnan mo kung ang device naka kabit dyan.

kung d ka sigurado gumamit ka ng oscilloscope at signal genarator.

[Junesp111]

They are not. A program may not be electronic. A firmware is electronic in nature.

firmware definition from wikipedia:

In electronic systems and computing, firmware is a type of software that provides control, monitoring and data manipulation of engineered products and systems. Typical examples of devices containing firmware are embedded systems (such as traffic lights, consumer appliances, and digital watches), computers, computer peripherals, mobile phones, and digital cameras. The firmware contained in these devices provides the low-level control program for the device. As of 2013, most firmware can be updated.[1]

Firmware is held in non-volatile memory devices such as ROM, EPROM, or flash memory. Changing the firmware of a device may rarely or never be done during its economic lifetime; some firmware memory devices are permanently installed and cannot be changed after manufacture. Common reasons for updating firmware include fixing bugs or adding features to the device. This may require ROM integrated circuits to be physically replaced, or flash memory to be reprogrammed through a special procedure.[2] Firmware such as the ROM BIOS of a personal computer may contain only elementary basic functions of a device and may only provide services to higher-level software. Firmware such as the program of an embedded system may be the only program that will run on the system and provide all of its functions.

Before integrated circuits, other firmware devices included a discrete semiconductor diode matrix. The Apollo guidance computer had firmware consisting of a specially manufactured core memory plane, called "core rope memory", where data were stored by physically threading wires through (1) or around (0) the core storing each data bit.[3]


https://en.wikipedia.org/wiki/Firmware

[confused shoes]

Tingan mo yung daigram, tingnan mo kung ano sensor nakakabit dyan, sa output naman tingnan mo kung ang device naka kabit dyan.

kung d ka sigurado gumamit ka ng oscilloscope at signal genarator.

Of course, you should know what are those sensors and what they do. If they are activated what will happen.

You need something like this (quote ni crosswind below). Para malaman mo kung effective nga yung "1" or "0" mo.111

It will do step on the gas while in N stop at 2k rpm while rotating the IDLE control button the step on the brkae then place the shifter in D then it will accelerate on it's own

Only the automotive expert know it. A simulation also may not work. Pwede bang magpunta sa actual fight yung soon to be pilot na natapos sa flight simulator lang?