adafruit
/ High(er) speed SPI on the Arduino without the SPI library
Created
October 6, 2011 18:19
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| #include "pins_arduino.h" | |
| #include "wiring_private.h" | |
| void spiwrite(uint8_t c) | |
| { | |
| int8_t i; | |
| // MSB first, clock low when inactive (CPOL 0), data valid on leading edge (CPHA 0) | |
| // Make sure clock starts low | |
| // slow version - built in shiftOut function |