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Lpc2000

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Re: [lpc2000] CAN bit timming vs RS232

2006-01-03 by Ake Hedman, eurosource

Martin Steppuhn wrote:

> Hello Rui,
>
> I 'am using the LPC2129 an there ist the same "problem".
>
> You can fix it with the CAN setup by chosing a time quanta
> with a low error in the CANBTR.
>
> For 14,7456 MHz and 125k CAN Buadrate my settings for CANBTR are:
>
> #define   CALC_BRP_43      0x0000002A
> #define   CALC_SJW_1        0x00000000
> #define   CALC_TSEG1_8    0x00070000
> #define   CALC_TSEG2_2    0x00100000
>
> #define   CANBitrate125k      CALC_BRP_43 | CALC_SJW_1 | CALC_TSEG1_8 |
> CALC_TSEG2_2
>
> Error:  -0,24%
>
> You can find additional infos in:
> http://www.hitex.co.uk/arm/lpc2000book/index.html
>
> Best regards,
> Martin
>
>
>
 
With en error less then 1% there should be no problem for CAN.

Cheers
/Ake

-- 
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Ake Hedman (YAP - Yet Another Programmer)
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