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Configuring the Slave for Communication

To configure the slave for the communication, follow these steps:

  1. Configure SS idle timeout. When you enable the SPI slave, the SS line may be busy. The DLN adapter waits until the SS line drives high. If the SS line is not released during the SS idle timeout, the SPI slave cannot be enabled. Read SS Idle Timeout.

  2. Configure the transmission mode (clock polarity and clock phase). The clock polarity (CPOL) and clock phase (CPHA) configuration must be the same for both SPI master and SPI slave devices.

  3. Configure loading data to the reply buffer. The reply mode and reply type parameters can prevent from losing data if the frame size, configured by you for the SPI slave, does not correspond the frame size set on the SPI master. Read SPI Slave Reply Buffer.

  4. If needed, configure events. DLN adapters provide event-driven interface for SPI slave devices. Read SPI Slave Events.

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