rusefi.com

puff

https://www.lcsc.com/product-detail/Motor-Driver-ICs_Texas-Instruments-DRV8244SQRYJRQ1_C3681071.html
?

puff

Metal enclosure for a board with bluetooth?

puff

that's a nice hint! Hadn't thought of that a while ago, when got disconnections trying to connect to my frankenstein)

puff

В модуле Reset and Clock (RCM) (для STM32 это RCC) добавили бит включения тактирования FPU - RCM->AHB2CLKEN, бит с номером 1.

Только такое ощущение, что этот бит ни на что не влияет. Пробовал и выставлять его, пробовал и не выставлять - плавучка одинаково считается.

puff

on the other hand, however: APM32F4xxx User_Manual_V1.6: programmable priority levels  A version: 8 priority levels (3-bit interrupt priority level could be used)  C version: 16 priority levels (4-bit interrupt priority level could be used) To check the rev.: Device ID register (DBGMCU_IDCODE) Waf...

puff

I got a reply from the FAE: APM has NVIC with 8 levels, STM has 16 levels.

One very obvious problem we found is that the ADC calibration in system memory is missing. (non existent)

puff

you could have opened an online master-class

or at least publish some videos of the process..

I was always wondering how the four (or the eight - in case of v8) same-coloured injector wires are connected together.

puff

which code? it's just raw data..
btw, googled for that BMW battery wire and got this:
"Плюсовой провод аккумуляторной батареи БМВ, Клемма аккумулятора BMW с пиропатроном" %-)))

puff

I am curious how much current does it consume when in sleep mode? ;-) Still, no protocol details :-( I wonder, what chip is inside. Is it possible to disassebme the firmware? or decyphering protocol is the way to go? sort of offtopic: there are also chinese BLE battery trackers, which provide detail...

puff

afaik, hall-based current sensors work best at some certain current range: if it is good for small currents, it won't work for large currents (btw, not sure, will it provide wrong readings or just fail). those intended for large currents (e.g. of a starter motor) won't read small values (sensitivity...

puff

looks like a smart shunt? do you have the part number? know anything about its datagrams?

puff

That's a smart evil plan!
https://www.chipdip.ru/search?searchtext=apm32F407VGT7

puff

It seems as all the voltage readings are wrong.

AndreyB, why do you say ignore MAP and TPS. They are clearly coupled to VBAT.
Could be broken adc in the chip itself?

puff

malfunctioning voltage regulator? does it happen during cranking? bad battery? what software do you usually use to view .mlg files? megalogviewer is limited just to 500 values.

puff

L-line is a third one, which is different from Lin

puff

K-line and Lin, although based on usart, are still different protocols. The image from the scope could be a break frame sent by Lin master (right now playing with it) - it should be followed by sync byte (0x55), and Id byte, followed by data and crc.

puff

LIN definitely looks different.

puff

you can tell for sure by measuring the length of the start bit probably.
still, didn't get: it doesn't work even when bytes are sent from the usb-uart dongle? so, it's a firmware bug?

puff

10400 is not supported by some usb-uart converters... (that's why people prefer ft232)

puff

"No LIN transceiver is fully compliant to the K-LINE, but compatible. You can see the difference from the document. So I think TJA1021 can work"
https://community.nxp.com/t5/MPC5xxx/TJA1021-K-LINE-compatibilty/td-p/550725
unfortunatelly, it's 403 for me.

puff

what's the schematics? which exactly wire is that? kline usually works at much higher levels (12v).
can it read bytes sent from usb-uart adapter?

puff

there seems to be a 5 ms pause between these two bytes - could be a timeout

puff

5ms timeout?

puff

you mean version 7.0.0?
"KiCad 6.0.* will no longer be maintained"

puff

wrong PID parameters that don't count for wear and tear of that exact throttle body?

puff

So, that's a tight balancing act not in terms of the right injector choice, but rather in the number of available pins on the mcu for FB, and its computational resources (vs using a standalone specialized driver with buil-in bells and whisltes)

puff

do you have an inspection mirror?

puff

an opamp to amplify voltage?

puff

I would like to connect rusEfi to my android head unit with MSDroid for tuning some values

which values?

puff

roughly one or two updates per second at 9600kbps?

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