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 /*

  * spi.h

  *

  *  Created on: Nov 16, 2015

  *      Author: Philipp Hinz

  */


 #ifndef SPI_H_

 #define SPI_H_

 #include <inttypes.h>


 uint8_t spi_readwrite(uint8_t data);

 void spi_init(void);

 void shift_init(void);

 void shift_data(uint8_t data);


 #define SHIFT_SCLR  21 // ~Master Reset

 #define SHIFT_RCK   22 // storage register clock input

 #define SHIFT_G     26 // ~Output Enable


 #endif /* SPI_H_ */

shift_init
void shift_init(void)
Initializes the shift register.
Definition: spi.cpp:51

shift_data
void shift_data(uint8_t data)
Sends a byte to the shift register.
Definition: spi.cpp:69

spi_readwrite
uint8_t spi_readwrite(uint8_t data)
Writes the data on the SPI bus and returns the reply.
Definition: spi.cpp:26

spi_init
void spi_init(void)
Initializes the SPI bus.
Definition: spi.cpp:39