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If a task or function wants to transmit a CAN frame by calling the function CanBusWrite() while the configured CAN transmitter is busy, the following steps will be performed:


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titleFigure - CAN transmission while transmitter is busy

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  1. The function CanBusWrite() is pending on the counting semaphore with the configured TxTimeout. The timeout must be set with CanBusIoCtl() CANBUS_SET_TX_TIMEOUT
  2. If the function has the semaphore within the timeout, the given CAN frame is copied to the internal transmission queue. If a timeout error was detected, the function CanBusWrite() exits with an error-code.

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