/*
 * SPI communication stuf
 */
void InitSPI(void);
extern void adc_read(unsigned char channel);
int spi_read(long int addres);
extern void spi_write(unsigned char addres, unsigned char data);
extern void spi_RDSR(unsigned char addres, unsigned char data);
extern void spi_write_status(unsigned char addres, unsigned char data);
extern void spi_WREN(void);
extern void spi_WRDI(void);