Re: Transmitted Data is not to be received by other Application

[Marc Kleine-Budde <mkl@pengutronix.de>]

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On 03/28/2013 01:12 PM, Oliver Stefan wrote:
> I'm developing Software for the Raspberry Pi with MCP2515 extension.
> 
> I have two applications running the same time.
> One is in the receiving mode, and the other can transmit and receive.
> Unfortunately the application that is permanently receiving, receives
> the data of the second application too.
> 
> How can I turn off this function?

Have you tried this:

  4.1.3 RAW socket option CAN_RAW_LOOPBACK

  To meet multi user needs the local loopback is enabled by default
  (see chapter 3.2 for details). But in some embedded use-cases
  (e.g. when only one application uses the CAN bus) this loopback
  functionality can be disabled (separately for each socket):

    int loopback = 0; /* 0 = disabled, 1 = enabled (default) */

    setsockopt(s, SOL_CAN_RAW, CAN_RAW_LOOPBACK, &loopback, sizeof(loopback));

Marc
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