Re: Guidance on AN82527 from Intel

Mauricio Gott <[email protected]>
Newsgroups gmane.comp.hardware.bus.can
Message-ID <CADwZcCYfX_bzdkV=ERL6TXLJULuRgC87XNa2VBb5dsni9ge65g@mail.gmail.com>
Sorry, i sent previous mail unfinished....

I was listing the steps from the datasheet that i followed:
Power Up
Init by the CPU
Upd data: start
Upd data bytes
Upd data: end

And then wrote  0x66 to register  0x11 for the transmision to start,
but no change in the TX0 and TX1 pins.
also checked if TxRqst changed or  Status bit  TXOK was set.
I dont want to send any specific communication, i just want to see if
the chip is able to send some pulses.
I know im missing something i just dont know what.

Any suggestions?
Thanks!

On Fri, Apr 5, 2013 at 1:28 PM, Mauricio Gott <[email protected]> wrote:
> Hello!
> I have the task of checking the functionality of a reel of these IC
> from intel, but have not worked with any CAN devices before so i
> started from scratch.
> So far:
> I already defined my test method,
> I actually managed to read/ write correctly from all Control, Config,
> and Message registers.
> Ive established all of these conditions listed on the datasheet for a
> transmission:
>
> Conditions required to transmit a data frame:
> 1) Init bit e 0
> 2) MsgVal bit e 1
> 3) direction e transmit
> 4) NewDat bit e 1
> 5) TxRqst e 1
>
> I also checked  the steps listed in "7.4 Host-CPU Handling of Message
> Objects 1±14 (Direction = Transmit)":
> Power Up
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