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Re: [lpc2000] 2194 CAN

2005-03-10 by Anton Erasmus

On 10 Mar 2005 at 20:29, artturi wrote:

> 
> Hello
> 
> I'm quite new with LPC-family and microcontrollers too so:
> I'm having trouble with example LPC2_FullCAN_v110 which I got from
> this group files. I'm using LPC2194 and I haven't changed basic code
> at all. The problem is that the ISR won't arrive. I checked with scope
> that the message is sended but it don't cause interrupt to get the
> message to FullCAN list. Is 2194 capable to receive messages in
> "full-duplex" mode? Do I need external transiver while I'm working
> with only one 2194? Maybe I have done some rookie mistake but hope
> someone can turn me to right path.
> 

In general you need a Reciever when working with CAN. It is not like a UART,
where you can transmit to nowhere, and check with a scope to see if it is working.
In CAN if you transmit, and there is nothing to receive the message, the CAN 
controller will retry a number of times, and then disable it's transmitter and go
into fault mode. 

Hope this helps

Regards
   Anton Erasmus

-- 
A J Erasmus

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