![]() ![]() Arduino will automatically use the best speed that is equal to or less than the number you use with SPISettings. If you are using a chip rated at 15 MHz, use 15000000. What is the maximum SPI speed your device can use? This is controlled by the first parameter in SPISettings.To write code for a new SPI device you need to note a few things: This allows you to have multiple SPI devices sharing the same MISO, MOSI, and CLK lines. When a device’s Slave Select pin is low, it communicates with the master. SS (Slave Select) – the pin on each device that the master can use to enable and disable specific devices. ![]() SCK (Serial Clock) – The clock pulses which synchronize data transmission generated by the master.MOSI (Master Out Slave In) – The Master line for sending data to the peripherals,.MISO (Master In Slave Out) – The Slave line for sending data to the master,.Typically there are three lines common to all the devices: With an SPI connection, there is always one master device (usually a microcontroller) which controls the peripheral devices. It can also be used for communication between two microcontrollers. Serial Peripheral Interface (SPI) is a synchronous serial data protocol used by microcontrollers for communicating with one or more peripheral devices quickly over short distances. ![]()
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