SpiMaster.h File Reference

#include <stdint.h>
#include "ReadWriteBits.h"
#include "Spi.h"

Go to the source code of this file.

Functions
uint8_t	SpiMasterXfrByte (uint8_t byte)
void	SpiMasterInit (void)

Detailed Description

API

void SpiMasterInit(void);
void SpiMasterXfrByte(uint8_t byte);

Definition in file SpiMaster.h.

Function Documentation

SpiMasterInit()

void SpiMasterInit ( void  )

inline

SpiMasterInit behavior:

• idles SlaveSelect high
  
• makes SlaveSelect an output
  
• makes Miso an input
  
• enables pullup on Miso
  
• makes DataReady an input
  
• enables pullup on DataReady
  
• makes Mosi an output
  
• makes Sck an output
  
• makes this MCU the SPI Master
  
• sets SPI Clock to 10MHz ext osc divided by 8
  
• enables the SPI hardware module
  
• clears SPI interrupt flag
  

Definition at line 55 of file SpiMaster.h.

SpiMasterXfrByte()

uint8_t SpiMasterXfrByte ( uint8_t  byte )

inline

SpiMasterXfrByte behavior:

• selects the SPI slave
  
• loads SPI data reg with the byte to send
  
• waits until the transfer is done by reading the SPI Interrupt Flag
  
• unselects the SPI slave
  
• clears the SPI Interrupt Flag by reading the SPI data reg
  
• returns the byte in the SPI data reg
  

Definition at line 21 of file SpiMaster.h.