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OnMostFiAmsPreSend

Valid for: CANoe DE

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Function Syntax

long OnMostFiAmsPreSend(mostAmsMessage * msg);

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Description

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Parameters

  • msg: This variable contains the send request of the simulation node. The number of transmitted data can be up to 65535 bytes for a mostAmsMessage. For reasons of efficiency, only the first 200 bytes are copied to the msg variable. To facilitate access to the entire message’s user data, the message can be assigned to an AMS message declared with a sufficient size (see example below).

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Return Values

  • 0: Original message is not sent
  • 1: Original message is sent without alteration

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Example

// change all Status messages a simulated node tries to send to error messages
long OnMostFiAmsPreSend(mostAmsMessage * msg)
{
    if(msg.OpType == 0xC) // Status or Result message
    {
        // make a copy
        mostAmsMessage * modMsg = {DLC = 1000}; // buffer for 1000 data bytes
        modMsg = msg; // at most 1000 data bytes are copied here

        // modify OpType
        modMsg.OpType = 0xF;
        // keep message length and data
        // but change the first byte
        modMsg.byte(0) = 0x0B; // set ErrorCode=Device malfunction
        // send modified message
        output(modMsg);

        // do not send original message
        return 0;
    }
    else
    {
        // send original message
        return 1;
    }
}