BB Logging update (March 4th)

[joecar]

You can do that now.

Yes, you can...

I just have to remember to start recording before doing bidi... (I usually forget but that's just a personal problem )...

unless it has changed... wait, let me test it out again...

[dc_justin]

Yes, you can... ... I just have to remember to start recording before doing bidi... (I usually forget but that's just a personal problem )...

unless it has changed... wait, let me test it out again...

Other way around. You have to have the bidi window open before recording if you're in stream-fast. In General or dynamic, you can open at any time.

[joecar]

Yes, you're right... can you tell I'm having a day...


me -> <-day

[Chevy366]

So what is the protocol of the serial on the V2 cable , pin 2 Tx and pin 3 Rx or other way around ?

Thanks

[JezzaB]

With this exciting stuff coming up I thought I would contact PLX see if they can help us boys. I know the SM-AFR unit has a TX and RX serial ports for daisy chaining units:

....please pass this along to EFI live. This is the serial protocol for the SM-AFR

The iMFD Digital output is

19200 Baud
8 Data Bits
1 Stop Bit
No parity

Packet format is as follows for the SM-AFR

1) Start bit (0x80)
2) Address bit MSB (0x00) for SM-AFR
3) Address bit LSB (0x00) for SM-AFR
4) Instance (0x00) if only one SM-AFR is connected
5) Data MSB
6) Data LSB
7) Stop bit (0x40)
(Packet set repeats exactly every 100mS)


Interpreting the data bits is as follows.

int datamsb;
int datalsb;
int data;

datamsb = datamsb & 0x3F; //This ignores 2 most significant bits
datalsb = datalsb & 0x3F;

data = (datamsb << 6) | datalsb; //data is the AFR value



when data is 0, AFR is 10 (gasoline) = 0.68 lambda
when data is 255, AFR is 20 (gasoline) = 1.36 lambda
when data is 256 AFR is "lean"
when data is 257 AFR is "Air"

All you'll need is a Max232 chip to convert TTL to RS232 levels
_________________
PL
PLX Engineer
www.plxdevices.com

Looks like ill be making up a cable
Jez

[Blacky]

Ooh, I missed this part of the post initially. That is GREAT! Will this include anything new (such as injector balance test) and a case relearn on other controllers?

Initially only the controls will only be activated manually. The actual tests, that perform multiple actions and produce a result (like cylinder balance tests and injector balance tests) will be implemented on a per controller basis.

CASE will be included for all controllers fow which we have the CASE bi directional data (I believe the E38 is covered).

Regards
Paul

[Blacky]

How will DVT affect us Diesel guys? Also, any updates on the 6 speed Allison read problems?

We will be implementing as many bi-di controls for the diesels as we can.
The Allison 6 speed is being worked on this weekend.
We'll post up the status on Monday - pm me on Monday night if I have not posted.

Regards
Paul

[Blacky]

Does this mean if you undock the tabs you can view the dash while using bidi controls...?

Yes, see screen shot...
Paul

[Blacky]

Yes, you can...

I just have to remember to start recording before doing bidi... (I usually forget but that's just a personal problem )...

unless it has changed... wait, let me test it out again...

It has changed in the new version, you can start/stop bi-di controls any time in any scan mode.

Regards
Paul

[Blacky]

So what is the protocol of the serial on the V2 cable , pin 2 Tx and pin 3 Rx or other way around ?
Thanks

There are two types of serial interfaces. Data Terminal Equipment (DTE) and Data Communications Equipment (DCE). Traditiaonlly the PC (or terminal) is considered the DTE and a modem (or whatever you are connecting to the PC) is considered the DCE.

FlashScan is technically a DCE because it connects directly to a PC. DCE equipment (i.e. FlashScan ) transmits on pin 2 and recieves on pin 3.

For anyone who is interested...
The wideband controllers are also DCE because they connect directly to a PC. Because FlashScan and the wide band controllers are both DCE, when connecting them directly to each other, you need to connect pin 2 to pin 3 and pin 3 to pin 2.

Regards
Paul