* Question
| How to handle data transfer when SPI is set to host? |
* Answer
| 1 Set the SPCCR register to get the corresponding SPI clock.
2 Set the SPCR register to control the SPI as the host. 3 Control the chip select signal and select the slave. 4 The data to be sent is written to the SPDR register, which initiates the SPI data transfer. 5 Read the SPSR register and wait for the SPIF bit. |
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