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lambda in stream RS232 of 2J2

 
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kickoune
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Joined: 29 Dec 2015
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PostPosted: Tue Dec 29, 2015 2:42 pm    Post subject: lambda in stream RS232 of 2J2 Reply with quote

hello, all users.
i'm french user and use 2J2 controler.

i have question about his data stream:
i try to create in logging software like winlog in embedded platform like RASPBERRY PI.

my 2J2:

v ==> {0D}{0D}{0A}> 0762{0D}{0A}
g03 ==> {0D}{0D}{0A}> 00E1{0D}{0A}
g04 ==> {0D}{0D}{0A}> 0001{0D}{0A}

i have develop sofware for test winlog and data stream 2J2.
my software response like the same my 2J2 unit.

in have send val in stream for lambda 1bit, 2bit, 3bits , 4bits

U16 lambda afr
0 0,6089 8,95083
1 0,609 8,9523
3 0,6091 8,95377
7 0,6095 8,95965
15 0,6101 8,96847
31 0,6115 8,98905
63 0,6142 9,02874
127 0,6195 9,10665
255 0,6298 9,25806
511 0,6503 9,55941
1023 0,6918 10,16946
2047 0,7748 11,38956
4095 1,0086 14,82642
8191 206,458
16383 207
32767 207

he jump lambda 1 to 207 in winlog when val jump 4095 to 8191 in data stream.


lambda is not LAMBDA16 sure, but it's dac count?
i don't understand the link between val in datastream ans the winlog value without table function.

i waiting value like 4095 in data stream and winlog display lambda we corresponding at 19 AFR like WBOutput it's described in website.
v =( AFR-9)/2


i waiting your answer.

i will try to test in value 4095 and 8191 for analys more, but i don't understand.


thank's
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kickoune
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Joined: 29 Dec 2015
Posts: 3

PostPosted: Thu Dec 31, 2015 5:05 pm    Post subject: Reply with quote



AFR in winlog in function of U16 in dataSTREAM RS232.

there is a equation most simply? or most exactly?

thank's
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