Honda Wakeup Sequence

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itsrealfast
Posts: 4
Joined: Thu May 30, 2019 6:04 am
cars: Honda Civic

Honda Wakeup Sequence

Post by itsrealfast »

Hi guys,

I wanted to see if anyone had experience with making an ADX file for the older Honda Motorcycle?

The ecu wake up sequence is Kline must go 70ms low then 120ms high and then send FE 04 FF FF.

In the sequence above I cannot get the 70ms low

I've seen some members use a clever way to send wake up sequence by adding a Baud offset

Thanks
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j_ds_au
Posts: 384
Joined: Sun Jan 25, 2015 4:21 pm
Location: Sydney

Re: Honda Wakeup Sequence

Post by j_ds_au »

Well, if a baud trick is what's required ...

Suppose the UART is an FTDI USB device, then its minimum baud rate is 183 bps. The longest 'space' (I assume that's what 'low' refers to) condition, as a character, is 1 start bit + 8 data bits + 1 parity bit = 10 bits. So at 183 baud, 10 bits is 54.64 ms ... is that close enough to 70ms?

Otherwise, you need to initiate a 'break' condition, wait 70ms, then end the 'break' condition.

How you achieve either of these via an ADX file is beyond my knowledge.

Joe.
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