RE: CAN message with DLC > 8 and PIC18

Hola bon dia Elisabeth,

(últimament estic tenint cers problemes amb els correus I potser el vaig esborrar sense adonar-me). 

Vols dir que si el “retiro” abans tots els interessos es perdran oi? 

T’ho dic per dos motius:

1)      Potser em fan falta abans... (cas típic)

2)      Si surt una cosa millor abans del any i mig tenint que les accions de Iberdrola i Inditex no van be i, veiem que és interessant i rendible una nova oportunitat, el cancel·lem i el poso tot el capital 180K€ a la nova cosa.

Contestem o truquem si us plau.

Salutacions,

Albert

 

De: [email protected] [mailto:[email protected]] En nombre de Alberto Alvarez
Enviado el: miércoles, 1 de junio de 2016 13:09
Para: Heinz-Jürgen Oertel
CC: [email protected]
Asunto: Re: [CANLIST] CAN message with DLC > 8 and PIC18

 

Hello

 

Very interesting information. I dully thought that having seen DLC of 10 or 12 meant a physical frame with that length.

 

A have no experience with multipacket on PIC microcontroller but i will keep digging to see if there is a protocol stack provider for such technology

 

Thank you!!




Alberto Álvarez

 

On Wed, Jun 1, 2016 at 12:28 PM, Heinz-Jürgen Oertel <[email protected] <mailto:[email protected]> > wrote:

Am Mittwoch, 1. Juni 2016, 11:48:59 schrieb Alberto Alvarez:
> how to
> operate with "multipacket Transport" (J1939/21) because when this Message
> is longer I am unnable to read anything.



J1939 defines a transport protocol TP. It uses sequences of 8 byte messages to transfer longer data. It is defined in the Standard.
In CANopen such a transport protocol is defined as one of the SDO (service data object) protocols.

Basic introduction at
https://www.kvaser.com/about-can/higher-layer-protocols/j1939-introduction/

If you are interested in implementing J1939, search for protocol stack providers.
You can ask me for references.

Heinz

 

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