Hello!
Has anybody idea about calculation in the vems data log stream. I have made a microcontroller based serial logger, and I couldn't handle the pulsewidth bytes...
I found this from megatune's vems3 ini:
[OutputChannels]
; The number of bytes MegaTune should expect as a result
; of sending the "A" command to MegaSquirt is determined
; by the value of ochBlockSize, so be very careful when
; you change it.
deadValue = { 0 } ; Convenient unchanging value.
ochBlockSize = 62
ochGetCommand = "D"
secl = scalar, U08, 0, "sec", 1.000, 0.000
squirt = scalar, U08, 1, "bits", 1.000, 0.000
engine = scalar, U08, 2, "bits", 1.000, 0.000
barometer = scalar, U08, 3, "ADC", 1.000, 0.000
mapADC = scalar, U16, 4, "Pa", 1.000, 0.000
matADC = scalar, U08, 6, "ADC", 1.000, 0.000
cltADC = scalar, U08, 7, "ADC", 1.000, 0.000
tpsADC = scalar, U08, 8, "ADC", 1.000, 0.000
batADC = scalar, U08, 9, "ADC", 1.000, 0.000
egoADC = scalar, U08, 10, "ADC", 1.000, 0.000
egoCorrection = scalar, U08, 11, "%", 1.000, 0.000
airCorrection = scalar, U08, 12, "%", 1.000, 0.000
warmupEnrich = scalar, U08, 13, "%", 1.000, 0.000
rpmVHR = scalar, U16 14, "rpm", 1.000, 0.000
pulseWidth = scalar, U16, 16, "ms", 0.004, 0.000
baroCorrection = scalar, U08, 18, "%", 1.000, 0.000
gammaEnrich = scalar, U08, 19, "%", 1.000, 0.000
veCurr = scalar, U08, 20, "%", 1.000, 0.000
INTdwell = scalar, U08, 21, "mS", 1.000, 0.000
INTspark = scalar, U08, 22, "", 1.000, 0.000
iacPos = scalar, U08, 23, "%", 1.000, 0.000
egt1ADC = scalar, U16, 24, "Deg", 1.000, 0.000
egt2ADC = scalar, U16, 26, "Deg", 1.000, 0.000
ebpADC = scalar, U16, 28, "Deg", 1.000, 0.000
fpADC = scalar, U16, 30, "Deg", 1.000, 0.000
misc1ADC = scalar, U16, 32, "Deg", 1.000, 0.000
misc2ADC = scalar, U16, 34, "Deg", 1.000, 0.000
misc3ADC = scalar, U16, 36, "Deg", 1.000, 0.000
misc4ADC = scalar, U16, 38, "Deg", 1.000, 0.000
latgtADC = scalar, U08, 40, "", 1.000, 0.000
knock_cyl_0_knock_val=scalar, U16, 41, "", 1.000, 0.000
knock_cyl_0_noise_val=scalar, U16, 43, "", 1.000, 0.000
knock_cyl_0_adjust=scalar, U08, 45, "Deg", 0.250, 0.000
knock_cyl_0_state = scalar, U08, 46, "", 1.000, 0.000
status1 = scalar, U08, 47, "", 1.000, 0.000
so it use command D and pulsewidth is the 16th and 17th byte 16bit value, but from vemstune's ini (1.1.27):
[OutputChannels]
ochGetCommand = "A"
#include "include/rtdata-raw-common.ini"
pulseWidth = scalar, U16, 16, "ms", 0.004, 0.000
so it use command A and pulsewidth is similar.
My controller use command D for 1.1.27 and everything calculated correctly, but pw.
When I get this stream:
#3 8 8 0 1 98 60 68 0 6B 0 64 66 79 0 0 18 7B 64 65 39 3A 8A A5 0 4E 0 0 0 0 0 0 0 0 0 0 0 0 0 0 B1 0 0 0 0 0 0 0 18 0 80 87 0 0 0 0 0 0 0 0 0 0 0
I calculate 187b hex -> 6267 dec but on the lcd display I see around 27 msec (crank pw)
When I get this stream:
#7E 89 89 0 0 DF 64 7A 0 65 82 64 65 6E 4 AE 2 11 64 70 44 3C A2 55 2 AD 0 0 F F3 F 7F 3 19 0 0 0 0 0 0 B1 0 22 0 24 0 0 8 18 0 80 86 0 FD 78 B1 C3 0 0 0 0 0 0
I calculate 211 hex -> 529 dec but on the lcd display I see around 2 msec (idle pw at 1198 rpm =4ae hex)
What is wrong?
