Root/atusb/fw/spi.h

1/*
2 * fw/spi.h - ATmega8 family SPI I/O
3 *
4 * Written 2011, 2013 by Werner Almesberger
5 * Copyright 2011, 2013 Werner Almesberger
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 */
12
13#ifndef SPI_H
14#define SPI_H
15
16#include <stdint.h>
17
18
19void spi_begin(void);
20uint8_t spi_io(uint8_t v);
21void spi_end(void);
22void spi_off(void);
23void spi_init(void);
24
25#define spi_send(v) (void) spi_io(v)
26#define spi_recv(v) spi_io(0)
27
28void spi_recv_block(uint8_t *buf, uint8_t n);
29
30#endif /* !SPI_H */
31

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