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spi.h
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spi.h
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#ifndef spi_h__
#define spi_h__
#include <avr/io.h>
#define PROG_PORT PORTB
#define PROG_PIN PINB
#define PROG_DDR DDRB
#define NOP asm volatile ("nop")
#define MOSI PB2
#define MISO PB3
#define SPCK PB1
#define CS PB0
#define SET_MOSI PROG_PORT |= (1<<MOSI)
#define CLR_MOSI PROG_PORT &=~(1<<MOSI)
#define SET_SPCK PROG_PORT |= (1<<SPCK)
#define CLR_SPCK PROG_PORT &=~(1<<SPCK)
#define DISABLE_SPCK { PROG_DDR &=~(1<<SPCK); CLR_SPCK; }
#define ENABLE_SPCK { PROG_DDR |=(1<<SPCK); CLR_SPCK; }
#define CS_H { DISABLE_SPCK; PROG_PORT |= (1 << CS); }
#define CS_L { ENABLE_SPCK; PROG_PORT &=~(1 << CS); }
#define GET_MISO (PROG_PIN & (1<<MISO))
class SPI{
public:
SPI();
uint8_t transfer(uint8_t znak);
};
extern SPI spi;
#endif // spi_h__