sam7fc/include/fifo.h

#ifndef FIFO_H_
#define FIFO_H_

#include <stdint.h>

struct fifo {
	uint32_t in;
	uint32_t out;

	uint16_t pdc_tx;
	uint16_t pdc_rx;

	uint32_t size;
	char buf[0];
};

uint32_t fifo_put(struct fifo *fifo, const char *buf, uint32_t len);
uint32_t fifo_get(struct fifo *fifo, char *buf, uint32_t len);

uint32_t fifo_rxpdc(struct fifo *fifo, AT91S_PDC *pdc, uint16_t maxsize);
uint32_t fifo_txpdc(struct fifo *fifo, AT91S_PDC *pdc, uint16_t maxsize);

uint32_t fifo_putbyte(struct fifo *fifo, char c);
uint32_t fifo_getbyte(struct fifo *fifo, char *p);

char * fifo_peek(struct fifo *fifo, uint32_t len);

struct fifo * fifo_alloc(uint32_t size);

#endif /*FIFO_H_*/