| // Initialize the SPI library | // Initialize the SPI library | ||||
| static void begin(); | static void begin(); | ||||
| // If SPI is to used from within an interrupt, this function registers | |||||
| // If SPI is used from within an interrupt, this function registers | |||||
| // that interrupt with the SPI library, so beginTransaction() can | // that interrupt with the SPI library, so beginTransaction() can | ||||
| // prevent conflicts. The input interruptNumber is the number used | // prevent conflicts. The input interruptNumber is the number used | ||||
| // with attachInterrupt. If SPI is used from a different interrupt | // with attachInterrupt. If SPI is used from a different interrupt |