It is byte not int?
coolant and trans temps are int
upd
Oh i see my mistake. I used wrong datastream
I'll check
It is byte not int?
coolant and trans temps are int
upd
Oh i see my mistake. I used wrong datastream
I'll check
Last edited by yoheer; 08-24-2023 at 12:27 PM.
I want to add wideband reading. Using Kur40's pcm patch with d31 or d27 pin.(eehack uses pin27. d31 in the patch description)
What datastream data should I use?
It is written Byte 36 mode1 msg1 (patch)
Is it instead of SDINMW1 input mode word 1?
This is from mode 1 msg1, 36 word
Is it correct?
Last edited by yoheer; 09-26-2023 at 06:19 PM.
D27 is the spare unused ADC input. D31 is the ADC input for the A/C pressure sensor.
According to EEHack's definition file for $EE, the A/C Pressure input is a Byte (8 bits) at Offset 26 in a Mode 00 message (F4 00). Pin D27 input would be read as a Byte (8 bits) at Offset 54 in a Mode 00 message (F4 00).
1990 Corvette (Manual)
1994 Corvette (Automatic)
1995 Corvette (Manual)
thnx, I'll check
I believe it is mode 1 msg 0 byte 55 ALDL message
and it is not used in description
I get ~128 values at idle. Very similar to blm.
Is it correct? How to convert it to AFR if yes?
10-20 afr wideband
Also I have an issue with MAF
It is mode1 msg0 word47
GM/SEC = 512N/65536
If i use this formula I get 0 value
Datastream value is 200ish
Last edited by yoheer; 09-27-2023 at 09:11 PM.
According to the EE definition file for EEHack, MAF gm/s is a Word (16 bits) at Offset 45 in Mode 00 (F4 00). The calculation you posted is correct. If your datastream value was 200, then the result should be 1.5625 g/s according to that equation. Perhaps you implemented your math function incorrectly?
Converting wideband voltage to AFR depends on your wideband O2 controller. Normally the instruction manual will give you the equation required to convert its voltage into AFR. You only have Byte resolution here since it's an 8-bit ADC, so 0V~5V is 0~255. How to convert 0~255 to X:1 AFR will depend on your Wideband controller. Check your controller's documentation.
1990 Corvette (Manual)
1994 Corvette (Automatic)
1995 Corvette (Manual)
I'll check math function.
It is SLC2 Free by 14point7
This is what i found
0[v]@0.68[Lambda] linear to 5[v]@1.36[Lambda], 10[AFR] linear to 20[AFR] equivalent for gasoline
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