Rev 2108 Rev 3500
1 #include "spi.h" 1 #include "spi.h"
2   2  
3 #include <avr/io.h> 3 #include <avr/io.h>
4   4  
5 void SPI_MasterInit(void) 5 void SPI_MasterInit(void)
6 { 6 {
7 /* Enable SPI, Master, set clock rate fck/4, SCK high when idle, sample on rising */ 7 /* Enable SPI, Master, set clock rate fck/4, SCK high when idle, sample on rising */
8 // SPSR|= 0b00000001; //for fck/2 8 // SPSR|= 0b00000001; //for fck/2
9 SPCR = 0b01011100; 9 SPCR = 0b01011100;
10 } 10 }
11   11  
12 char SPI_MasterTransmit(char cData) { 12 char SPI_MasterTransmit(char cData) {
13 /* Start transmission */ 13 /* Start transmission */
14 SPDR = cData; 14 SPDR = cData;
15   15  
16 /* Wait for transmission complete */ 16 /* Wait for transmission complete */
17 while(!(SPSR & (1<<SPIF))) 17 while(!(SPSR & (1<<SPIF)))
18 ; 18 ;
19 return SPDR; 19 return SPDR;
20 } 20 }